TYC 8998-760-1

From Wikipedia
https://en.wikipedia.org/wiki/TYC_8998-760-1
TYC 8998-760-1
First ever image of a multi-planet system around a Sun-like star.tif
TYC 8998-760-1, accompanied by two giant exoplanets, TYC 8998-760-1b and TYC 8998-760-1c [1]
Observation data
Epoch J2000 [2]       Equinox J2000 [2]
Constellation Musca
Right ascension 13h 25m 12.1261s [2]
Declination −64° 56′ 20.6882″ [2]
Apparent magnitude (V) 11.19 [3]
Characteristics
Evolutionary stage Pre-main sequence
Spectral type K3IV [2]
Astrometry
Radial velocity (Rv)12.84 [4] km/s
Proper motion (μ) RA: -40.898 [4]  mas/ yr
Dec.: -17.788 [4]  mas/ yr
Parallax (π)10.5400 ± 0.0314 [4]  mas
Distance309.4 ± 0.9  ly
(94.9 ± 0.3  pc)
Details
Mass1.00 [5]  M
Radius0.95 [4]  R
Luminosity0.429 [4]  L
Temperature4,783 [4]  K
Age17 [5]  Myr
Database references
SIMBAD data

TYC 8998-760-1 is a young star, about 17  Ma old, located 310 light years away in the constellation of Musca, with a mass 1.00±0.02 times the Sun.

Planetary system

There are two giant exoplanets orbiting the star. The European Southern Observatory's ( ESO's) Very Large Telescope photographed the two planets using its SPHERE instrument, producing the first direct image of multiple planets orbiting a Sun-like star. [1] [6]

TYC 8998-760-1 b has a mass 14 times that of Jupiter, and a radius of 3 RJ. It orbits at a distance of 162 AU (2.42×1010 km; 1.51×1010 mi), or slightly more than 5 times the Neptune-Sun distance. [5] [7] In July 2021, astronomers reported the detection, for the first time, of an isotope in the atmosphere of an exoplanet; more specifically, the isotope Carbon-13 (C13) was found in the atmosphere of the gas giant exoplanet named TYC 8998-760-1 b. [8] [9]

TYC 8998-760-1 c has a mass of 6 MJ, and orbits at 320 AU (4.8×1010 km; 3.0×1010 mi), or slightly more than 11 times the Neptune-Sun distance. [5]

The TYC 8998-760-1 planetary system [5] [10]
Companion
(in order from star)
Mass Semimajor axis
( AU)
Orbital period
( years)
Eccentricity Inclination Radius
b 14±MJ 162 4500
(assuming e = 0)
3.0+0.2
−0.7
  RJ
c 6±MJ 320 5700
(assuming e = 0)
1.1+0.6
−0.3
  RJ

References

  1. ^ a b ESO/Bohn (22 July 2020). "First ever image of a multi-planet system around a Sun-like star (uncropped, with annotations)". ESO. European Southern Observatory. Archived from the original on 24 July 2020. Retrieved 24 July 2020.
  2. ^ a b c d "TYC 8998-760-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 July 2020.
  3. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H.
  4. ^ a b c d e f g Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  5. ^ a b c d e Bohn, Alexander (22 July 2020). "Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1". The Astrophysical Journal Letters. 898 (1): L16. arXiv: 2007.10991. Bibcode: 2020ApJ...898L..16B. doi: 10.3847/2041-8213/aba27e. S2CID  220686536.
  6. ^ Wall, Mike (22 July 2020). "Multiplanet system around sunlike star photographed for 1st time ever - The two newly imaged planets are huge — 14 and 6 times more massive than Jupiter". Space.com. Retrieved 22 July 2020.
  7. ^ "Astronomers Directly Image Two Giant Exoplanets around Young Sun-Like Star | Astronomy | Sci-News.com". Breaking Science News | Sci-News.com. Retrieved 2020-07-25.
  8. ^ Starr, Michelle (14 July 2021). "Isotopes Detected in The Atmosphere of an Exoplanet For The First Time". ScienceAlert. Retrieved 14 July 2021.
  9. ^ Zhang, Yapeng; et al. (14 July 2021). "The 13CO-rich atmosphere of a young accreting super-Jupiter". Nature. 595: 370–372. arXiv: 2107.06297. doi: 10.1038/s41586-021-03616-x. Retrieved 14 July 2021.
  10. ^ Planet TYC 8998-760-1 b at exoplanets.eu