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New knowledge in science is advanced by research from scientists who are motivated by curiosity about the world and a desire to solve problems.[29][30] Contemporary scientific research is highly collaborative and is usually done by teams in academic and research institutions,[31] government agencies,[19] and companies.[32] The practical impact of their work has led to the emergence of science policies that seek to influence the scientific enterprise by prioritising the ethical and moral development of commercial products, armaments, health care, public infrastructure, and environmental protection.
^Heilbron, J. L.; et al. (2003). "Preface". The Oxford Companion to the History of Modern Science. New York: Oxford University Press. pp. vii–x. ISBN978-0-19-511229-0. ...modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions.
^Colander, David C.; Hunt, Elgin F. (2019). "Social science and its methods". Social Science: An Introduction to the Study of Society (17th ed.). New York: Routledge. pp. 1–22.
^Nisbet, Robert A.; Greenfeld, Liah (16 October 2020). "Social Science". Encyclopædia Britannica. Archived from the original on 2 February 2022. Retrieved 9 May 2021.
^Bunge, Mario (1998). "The Scientific Approach". Philosophy of Science: Volume 1, From Problem to Theory. Vol. 1 (revised ed.). New York: Routledge. pp. 3–50. ISBN978-0-7658-0413-6.
^Fetzer, James H. (2013). "Computer reliability and public policy: Limits of knowledge of computer-based systems". Computers and Cognition: Why Minds are not Machines. Newcastle, United Kingdom: Kluwer. pp. 271–308. ISBN978-1-4438-1946-6.
^Nickles, Thomas (2013). "The Problem of Demarcation". Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. The University of Chicago Press. p. 104.
^Lindberg, David C. (2007). The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. ISBN978-0226482057.
^Grant, Edward (2007). "Ancient Egypt to Plato". A History of Natural Philosophy: From the Ancient World to the Nineteenth Century. New York: Cambridge University Press. pp. 1–26. ISBN978-0-521-68957-1.
^Keay, John (2000). India: A history. Atlantic Monthly Press. p. 132. ISBN978-0-87113-800-2. The great era of all that is deemed classical in Indian literature, art and science was now dawning. It was this crescendo of creativity and scholarship, as much as ... political achievements of the Guptas, which would make their age so golden.
^ abLindberg, David C. (2007). "Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 163–192. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The revival of learning in the West". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 193–224. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The recovery and assimilation of Greek and Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 225–253. ISBN978-0-226-48205-7.
^Sease, Virginia; Schmidt-Brabant, Manfrid. Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages. 2007. Pages 80–81Archived 27 August 2024 at the Wayback Machine. Retrieved 6 October 2023
^Principe, Lawrence M. (2011). "Introduction". Scientific Revolution: A Very Short Introduction. New York: Oxford University Press. pp. 1–3. ISBN978-0-19-956741-6.
^Lindberg, David C. (2007). "The legacy of ancient and medieval science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 357–368. ISBN978-0-226-48205-7.
^Cahan, David, ed. (2003). From Natural Philosophy to the Sciences: Writing the History of Nineteenth-Century Science. University of Chicago Press. ISBN978-0-226-08928-7.
^Lightman, Bernard (2011). "13. Science and the Public". In Shank, Michael; Numbers, Ronald; Harrison, Peter (eds.). Wrestling with Nature: From Omens to Science. University of Chicago Press. p. 367. ISBN978-0-226-31783-0.
^Harrison, Peter (2015). The Territories of Science and Religion. University of Chicago Press. pp. 164–165. ISBN978-0-226-18451-7. The changing character of those engaged in scientific endeavors was matched by a new nomenclature for their endeavors. The most conspicuous marker of this change was the replacement of "natural philosophy" by "natural science". In 1800 few had spoken of the "natural sciences" but by 1880 this expression had overtaken the traditional label "natural philosophy". The persistence of "natural philosophy" in the twentieth century is owing largely to historical references to a past practice (see figure 11). As should now be apparent, this was not simply the substitution of one term by another, but involved the jettisoning of a range of personal qualities relating to the conduct of philosophy and the living of the philosophical life.
The virus was confirmed to have reached France on 24 January 2020, when the first COVID-19 case in both Europe and France was identified in Bordeaux. The first five confirmed cases were all individuals who had recently arrived from China.[2][3] A Chinese tourist who was admitted to hospital in Paris on 28 January 2020, died on 14 February 2020, becoming the first known COVID-19 fatality outside Asia as well as the first in France.[4][5][6][7] A key event in the spread of the disease across metropolitan France as well as its overseas territories was the annual assembly of the Christian Open Door Church between 17 and 24 February 2020 in Mulhouse which was attended by about 2,500 people, at least half of whom are believed to have contracted the virus.[8][9] On 4 May 2020, retroactive testing of samples in one French hospital showed that a patient was probably already infected with the virus on 27 December 2019, almost a month before the first officially confirmed case.[10][11]
The first lockdown period began on 17 March 2020 and ended on 11 May 2020.[12] On 2 May 2020, Health Minister Olivier Véran announced that the government would seek to extend the health emergency period until 24 July 2020.[13] Several mayors opposed the 11 May 2020 lifting of the lockdown, which had been announced by the president a few weeks earlier in a televised address to the nation,[12] saying it was premature. Véran's bill was discussed in Senate on 4 May 2020.[14]
From August 2020, there was an increase in the rate of infection and on 10 October 2020, France set a record number of new infections in a 24-hour period in Europe with 26,896 recorded. The increase caused France to enter a second nationwide lockdown on 28 October 2020. On 15 October 2020, police raided the homes and offices of key government officials, including Véran and Philippe, in a criminal negligence probe opened by the Cour de Justice de la République.[15] According to a team of French epidemiologists, under 5% of the total population of France, or around 2.8 million people, may have been infected with COVID-19. This was believed to have been nearly twice as high in the Île-de-France and Alsaceregions.[16]
On 31 March 2021, Macron announced a third national lockdown which commenced on 3 April 2021 and which was mandated for all of April 2021; measures included the closure of non-essential shops, the suspension of school attendance, a ban on domestic travel and a nationwide curfew from 7pm-6am.
In February 2022, it was reported that no tests are required to enter the country, and children under the age of 12 are free from vaccination requirements.[17]
New knowledge in science is advanced by research from scientists who are motivated by curiosity about the world and a desire to solve problems.[29][30] Contemporary scientific research is highly collaborative and is usually done by teams in academic and research institutions,[31] government agencies,[19] and companies.[32] The practical impact of their work has led to the emergence of science policies that seek to influence the scientific enterprise by prioritising the ethical and moral development of commercial products, armaments, health care, public infrastructure, and environmental protection.
^Heilbron, J. L.; et al. (2003). "Preface". The Oxford Companion to the History of Modern Science. New York: Oxford University Press. pp. vii–x. ISBN978-0-19-511229-0. ...modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions.
^Colander, David C.; Hunt, Elgin F. (2019). "Social science and its methods". Social Science: An Introduction to the Study of Society (17th ed.). New York: Routledge. pp. 1–22.
^Nisbet, Robert A.; Greenfeld, Liah (16 October 2020). "Social Science". Encyclopædia Britannica. Archived from the original on 2 February 2022. Retrieved 9 May 2021.
^Bunge, Mario (1998). "The Scientific Approach". Philosophy of Science: Volume 1, From Problem to Theory. Vol. 1 (revised ed.). New York: Routledge. pp. 3–50. ISBN978-0-7658-0413-6.
^Fetzer, James H. (2013). "Computer reliability and public policy: Limits of knowledge of computer-based systems". Computers and Cognition: Why Minds are not Machines. Newcastle, United Kingdom: Kluwer. pp. 271–308. ISBN978-1-4438-1946-6.
^Nickles, Thomas (2013). "The Problem of Demarcation". Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. The University of Chicago Press. p. 104.
^Lindberg, David C. (2007). The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. ISBN978-0226482057.
^Grant, Edward (2007). "Ancient Egypt to Plato". A History of Natural Philosophy: From the Ancient World to the Nineteenth Century. New York: Cambridge University Press. pp. 1–26. ISBN978-0-521-68957-1.
^Keay, John (2000). India: A history. Atlantic Monthly Press. p. 132. ISBN978-0-87113-800-2. The great era of all that is deemed classical in Indian literature, art and science was now dawning. It was this crescendo of creativity and scholarship, as much as ... political achievements of the Guptas, which would make their age so golden.
^ abLindberg, David C. (2007). "Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 163–192. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The revival of learning in the West". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 193–224. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The recovery and assimilation of Greek and Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 225–253. ISBN978-0-226-48205-7.
^Sease, Virginia; Schmidt-Brabant, Manfrid. Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages. 2007. Pages 80–81Archived 27 August 2024 at the Wayback Machine. Retrieved 6 October 2023
^Principe, Lawrence M. (2011). "Introduction". Scientific Revolution: A Very Short Introduction. New York: Oxford University Press. pp. 1–3. ISBN978-0-19-956741-6.
^Lindberg, David C. (2007). "The legacy of ancient and medieval science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 357–368. ISBN978-0-226-48205-7.
^Cahan, David, ed. (2003). From Natural Philosophy to the Sciences: Writing the History of Nineteenth-Century Science. University of Chicago Press. ISBN978-0-226-08928-7.
^Lightman, Bernard (2011). "13. Science and the Public". In Shank, Michael; Numbers, Ronald; Harrison, Peter (eds.). Wrestling with Nature: From Omens to Science. University of Chicago Press. p. 367. ISBN978-0-226-31783-0.
^Harrison, Peter (2015). The Territories of Science and Religion. University of Chicago Press. pp. 164–165. ISBN978-0-226-18451-7. The changing character of those engaged in scientific endeavors was matched by a new nomenclature for their endeavors. The most conspicuous marker of this change was the replacement of "natural philosophy" by "natural science". In 1800 few had spoken of the "natural sciences" but by 1880 this expression had overtaken the traditional label "natural philosophy". The persistence of "natural philosophy" in the twentieth century is owing largely to historical references to a past practice (see figure 11). As should now be apparent, this was not simply the substitution of one term by another, but involved the jettisoning of a range of personal qualities relating to the conduct of philosophy and the living of the philosophical life.
The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th centuries revived natural philosophy, which was later transformed by the Scientific Revolution that began in the 16th century as new ideas and discoveries departed from previous Greek conceptions and traditions. The scientific method soon played a greater role in knowledge creation and in the 19th century many of the institutional and professional features of science began to take shape, along with the changing of "natural philosophy" to "natural science".
New knowledge in science is advanced by research from scientists who are motivated by curiosity about the world and a desire to solve problems. Contemporary scientific research is highly collaborative and is usually done by teams in academic and research institutions, government agencies, and companies. The practical impact of their work has led to the emergence of science policies that seek to influence the scientific enterprise by prioritising the ethical and moral development of commercial products, armaments, health care, public infrastructure, and environmental protection.
New knowledge in science is advanced by research from scientists who are motivated by curiosity about the world and a desire to solve problems.[29][30] Contemporary scientific research is highly collaborative and is usually done by teams in academic and research institutions,[31] government agencies,[19] and companies.[32] The practical impact of their work has led to the emergence of science policies that seek to influence the scientific enterprise by prioritising the ethical and moral development of commercial products, armaments, health care, public infrastructure, and environmental protection.
^Heilbron, J. L.; et al. (2003). "Preface". The Oxford Companion to the History of Modern Science. New York: Oxford University Press. pp. vii–x. ISBN978-0-19-511229-0. ...modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions.
^Colander, David C.; Hunt, Elgin F. (2019). "Social science and its methods". Social Science: An Introduction to the Study of Society (17th ed.). New York: Routledge. pp. 1–22.
^Nisbet, Robert A.; Greenfeld, Liah (16 October 2020). "Social Science". Encyclopædia Britannica. Archived from the original on 2 February 2022. Retrieved 9 May 2021.
^Bunge, Mario (1998). "The Scientific Approach". Philosophy of Science: Volume 1, From Problem to Theory. Vol. 1 (revised ed.). New York: Routledge. pp. 3–50. ISBN978-0-7658-0413-6.
^Fetzer, James H. (2013). "Computer reliability and public policy: Limits of knowledge of computer-based systems". Computers and Cognition: Why Minds are not Machines. Newcastle, United Kingdom: Kluwer. pp. 271–308. ISBN978-1-4438-1946-6.
^Nickles, Thomas (2013). "The Problem of Demarcation". Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. The University of Chicago Press. p. 104.
^Lindberg, David C. (2007). The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. ISBN978-0226482057.
^Grant, Edward (2007). "Ancient Egypt to Plato". A History of Natural Philosophy: From the Ancient World to the Nineteenth Century. New York: Cambridge University Press. pp. 1–26. ISBN978-0-521-68957-1.
^Keay, John (2000). India: A history. Atlantic Monthly Press. p. 132. ISBN978-0-87113-800-2. The great era of all that is deemed classical in Indian literature, art and science was now dawning. It was this crescendo of creativity and scholarship, as much as ... political achievements of the Guptas, which would make their age so golden.
^ abLindberg, David C. (2007). "Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 163–192. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The revival of learning in the West". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 193–224. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The recovery and assimilation of Greek and Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 225–253. ISBN978-0-226-48205-7.
^Sease, Virginia; Schmidt-Brabant, Manfrid. Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages. 2007. Pages 80–81Archived 27 August 2024 at the Wayback Machine. Retrieved 6 October 2023
^Principe, Lawrence M. (2011). "Introduction". Scientific Revolution: A Very Short Introduction. New York: Oxford University Press. pp. 1–3. ISBN978-0-19-956741-6.
^Lindberg, David C. (2007). "The legacy of ancient and medieval science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 357–368. ISBN978-0-226-48205-7.
^Cahan, David, ed. (2003). From Natural Philosophy to the Sciences: Writing the History of Nineteenth-Century Science. University of Chicago Press. ISBN978-0-226-08928-7.
^Lightman, Bernard (2011). "13. Science and the Public". In Shank, Michael; Numbers, Ronald; Harrison, Peter (eds.). Wrestling with Nature: From Omens to Science. University of Chicago Press. p. 367. ISBN978-0-226-31783-0.
^Harrison, Peter (2015). The Territories of Science and Religion. University of Chicago Press. pp. 164–165. ISBN978-0-226-18451-7. The changing character of those engaged in scientific endeavors was matched by a new nomenclature for their endeavors. The most conspicuous marker of this change was the replacement of "natural philosophy" by "natural science". In 1800 few had spoken of the "natural sciences" but by 1880 this expression had overtaken the traditional label "natural philosophy". The persistence of "natural philosophy" in the twentieth century is owing largely to historical references to a past practice (see figure 11). As should now be apparent, this was not simply the substitution of one term by another, but involved the jettisoning of a range of personal qualities relating to the conduct of philosophy and the living of the philosophical life.
In the early 1800s, some colleges and universities in the UK and US began admitting women, producing more female academics. Nevertheless, U.S. Department of Education reports from the 1990s indicate that few women ended up in philosophy, and that philosophy is one of the least gender-proportionate fields in the humanities.[24] Women make up as little as 17% of philosophy faculty in some studies.[25]
^Heilbron, J. L.; et al. (2003). "Preface". The Oxford Companion to the History of Modern Science. New York: Oxford University Press. pp. vii–x. ISBN978-0-19-511229-0. ...modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions.
^Colander, David C.; Hunt, Elgin F. (2019). "Social science and its methods". Social Science: An Introduction to the Study of Society (17th ed.). New York: Routledge. pp. 1–22.
^Nisbet, Robert A.; Greenfeld, Liah (16 October 2020). "Social Science". Encyclopædia Britannica. Archived from the original on 2 February 2022. Retrieved 9 May 2021.
^Bunge, Mario (1998). "The Scientific Approach". Philosophy of Science: Volume 1, From Problem to Theory. Vol. 1 (revised ed.). New York: Routledge. pp. 3–50. ISBN978-0-7658-0413-6.
^Fetzer, James H. (2013). "Computer reliability and public policy: Limits of knowledge of computer-based systems". Computers and Cognition: Why Minds are not Machines. Newcastle, United Kingdom: Kluwer. pp. 271–308. ISBN978-1-4438-1946-6.
^Nickles, Thomas (2013). "The Problem of Demarcation". Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. The University of Chicago Press. p. 104.
^Lindberg, David C. (2007). "The revival of learning in the West". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 193–224. ISBN978-0-226-48205-7.
^Lindberg, David C. (2007). "The recovery and assimilation of Greek and Islamic science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 225–253. ISBN978-0-226-48205-7.
^Sease, Virginia; Schmidt-Brabant, Manfrid. Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages. 2007. Pages 80–81Archived 27 August 2024 at the Wayback Machine. Retrieved 6 October 2023
^Principe, Lawrence M. (2011). "Introduction". Scientific Revolution: A Very Short Introduction. New York: Oxford University Press. pp. 1–3. ISBN978-0-19-956741-6.
^Lindberg, David C. (2007). "The legacy of ancient and medieval science". The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context (2nd ed.). University of Chicago Press. pp. 357–368. ISBN978-0-226-48205-7.
^Cahan, David, ed. (2003). From Natural Philosophy to the Sciences: Writing the History of Nineteenth-Century Science. University of Chicago Press. ISBN978-0-226-08928-7.
^Lightman, Bernard (2011). "13. Science and the Public". In Shank, Michael; Numbers, Ronald; Harrison, Peter (eds.). Wrestling with Nature: From Omens to Science. University of Chicago Press. p. 367. ISBN978-0-226-31783-0.
^Harrison, Peter (2015). The Territories of Science and Religion. University of Chicago Press. pp. 164–165. ISBN978-0-226-18451-7. The changing character of those engaged in scientific endeavors was matched by a new nomenclature for their endeavors. The most conspicuous marker of this change was the replacement of "natural philosophy" by "natural science". In 1800 few had spoken of the "natural sciences" but by 1880 this expression had overtaken the traditional label "natural philosophy". The persistence of "natural philosophy" in the twentieth century is owing largely to historical references to a past practice (see figure 11). As should now be apparent, this was not simply the substitution of one term by another, but involved the jettisoning of a range of personal qualities relating to the conduct of philosophy and the living of the philosophical life.
^"Salary, Promotion, and Tenure Status of Minority and Women Faculty in U.S. Colleges and Universities."National Center for Education Statistics, Statistical Analysis Report, March 2000; U.S. Department of Education, Office of Education Research and Improvement, Report # NCES 2000–173; 1993 National Study of Postsecondary Faculty (NSOPF:93). See also "Characteristics and Attitudes of Instructional Faculty and Staff in the Humanities." National Center For Education Statistics, E.D. Tabs, July 1997. U.S. Department of Education, Office of Education Research and Improvement, Report # NCES 97-973;1993 National Study of Postsecondary Faculty (NSOPF-93).
^U.S. Department of Education statistics in above-cited reports seem to put the number closer to 17%, but these numbers are based on data from the mid-1990s. Margaret Urban Walker's more recent article (2005) discusses the data problem and describes more recent estimates as an "(optimistically projected) 25–30 percent."
{{#invoke:Excerpt/sandbox|main|2020 Republican Party presidential primaries|declared}}
Yes and no, or similar word pairs, are expressions of the affirmative and the negative, respectively, in several languages, including English. Some languages make a distinction between answers to affirmative versus negative questions and may have three-form or four-form systems. English originally used a four-form system up to and including Early Middle English. Modern English uses a two-form system consisting of yes and no. It exists in many facets of communication, such as: eye blink communication, head movements, Morse code,[clarification needed] and sign language. Some languages, such as Latin, do not have yes-no word systems.
Answering a "yes or no" question with single words meaning yes or no is by no means universal. About half the world's languages typically employ an echo response: repeating the verb in the question in an affirmative or a negative form. Some of these also have optional words for yes and no, like Hungarian, Russian, and Portuguese. Others simply do not have designated yes and no words, like Welsh, Irish, Latin, Thai, and Chinese.[1] Echo responses avoid the issue of what an unadorned yes means in response to a negative question. Yes and no can be used as a response to a variety of situations – but are better suited in response to simple questions. While a yes response to the question "You don't like strawberries?" is ambiguous in English, the Welsh response ydw (I am) has no ambiguity.
The words yes and no are not easily classified into any of the conventional parts of speech. Sometimes they are classified as interjections.[2] They are sometimes classified as a part of speech in their own right, sentence words, or pro-sentences, although that category contains more than yes and no, and not all linguists include them in their lists of sentence words. Yes and no are usually considered adverbs in dictionaries, though some uses qualify as nouns.[3][4] Sentences consisting solely of one of these two words are classified as minor sentences.
x1 Centauri's spectral type is B8/9V, meaning it is a late B-type main sequence star. These types of stars are a few times more massive than the Sun, and have effective temperatures of about 10,000 to 30,000 K. x1 Centauri is just over 3 times more massive than the Sun[7] and has a temperature of about 11,300 K.[7] The star x2 Centauri, which lies about 0.4′ away from x1 Centauri, may or may not form a physical binary star system with x1 Centauri, as the two have similar proper motions and distances.[3][10]
^Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "Ubvrijkl Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
^Jaschek, C.; Gomez, A. E. (1998). "The absolute magnitude of the early type MK standards from HIPPARCOS parallaxes". Astronomy and Astrophysics. 330 (619–625): 619. Bibcode:1998A&A...330..619J.
^ abcdeGrosbol, P. J. (1978). "Space velocities and ages of nearby early-type stars". Astronomy and Astrophysics Supplement Series. 32: 409–421. Bibcode:1978A&AS...32..409G.
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