PDS 70
Vorlage:Starbox begin Vorlage:Starbox image Vorlage:Starbox observe Vorlage:Starbox character Vorlage:Starbox astrometry Vorlage:Starbox detail Vorlage:Starbox catalog Vorlage:Starbox reference Vorlage:Starbox end
PDS 70 (V1032 Centauri) is a low-mass T Tauri star in the constellation Centaurus. Located approximately 370 light-years from Earth, it has a mass of Vorlage:Solar mass,[1] and is approximately 10 million years old.[2] The star has a protoplanetary disk containing a nascent exoplanet, named PDS 70b, which has been imaged, the first confirmed image of a newborn planet.[3][4][5]
Protoplanetary disk
The protoplanetary disk around PDS 70 was first hypothesized in 1992[6] and confirmed in 2006 along with a jet-like structure.[1] The disk has a radius of approximately Vorlage:Val. In 2012 a large gap (~Vorlage:Val) in the disk was discovered, which was thought to be caused by planetary formation.[7][2]
The gap was later found to have multiple regions: large dust grains were absent out to 80 au, while small dust grains were only absent out to the previously-observed Vorlage:Val. There is an asymmetry in the overall shape of the gap; these factors indicate that there are likely multiple planets affecting the shape of the gap and the dust distribution.[8]
In results published in 2018, a planet in the disk, named PDS 70b, was imaged by the VLT.[4][5] With a mass estimated to be a few times greater than Jupiter, the planet is thought to have a temperature of around Vorlage:Val and an atmosphere with clouds; its orbit is approximately Vorlage:Convert, taking around 120 years. Modeling predicts that the planet has acquired its own accretion disk.[3][9]
References
- ↑ a b Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen riaud2006. - ↑ a b Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen SciTech2012. - ↑ a b Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen EA-20180702. - ↑ a b Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen ESO-20180629. - ↑ a b Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen ESO-20180630. - ↑ Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen hetem1992. - ↑ Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen hashimoto2012. - ↑ Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen hashimoto2015. - ↑ Referenzfehler: Ungültiges
<ref>-Tag; kein Text angegeben für Einzelnachweis mit dem Namen Clery_Science.