HR 2562 b is a brown dwarf or gas giant exoplanet. It is a substellar companion of the debris disk host star HR 2562.[1] HR 2562 is a sixth-magnitude F-type main-sequence star located 110.92 ± 0.16 light-years (34.007 ± 0.048 pc) away.[2] HR 2562 is about 37% more massive than the Sun.[2]
| Discovery | |
|---|---|
| Discovered by | Q. Konopacky et al.[1] |
| Discovery date | 23 August 2016 |
| Direct imaging | |
| Orbital characteristics | |
| 20.3 ± 0.3 AU (3.037×109 ± 45,000,000 km)[1] | |
| Star | HR 2562 |
| Physical characteristics | |
Mean radius | 1.11 ± 0.11[1] RJ |
| Mass | 29 ± 15[2] MJ |
| log(g) = 4.70 ± 0.32[1] m/s² | |
| Temperature | 1200 ± 100 K[1] |
Initially categorised as brown dwarf, HR 2562 b's exact mass is unknown, and is thought to be 29 ± 15 Jupiter masses,[2] and its luminosity is about solar luminosity.[1][note 1] Its spectral type is L7±3.[1] It was first observed in 2016 using the Gemini Planet Imager.
According to NASA Exoplanet Archive, with a mass of nearly 30 MJ, it is listed as the most massive exoplanet.[3]
HR 2562 b resides interior to the parent star's debris disk, and its orbit is coplanar to it. The disk is inclined 78.0° from the plane of the sky to the line of sight, and ranges from 38 ± 20 au to 187 ± 20 au away from the central star.[2]
Host star edit
The host star of HR 2562 b is HR 2562, a F-type star located 33.63 parsecs (109.7 ly) from the Earth in the constellation Pictor.[4][note 2]It is faintly visible to the naked eye, with an apparent magntiude of 6.11.[4] The mass of HR 2562 is 1.3 M☉, and its age is be between 300 and 900 million years.[4]
See also edit
PZ Telescopii B, another substellar object with mass slightly below 30 MJ
Notes edit
References edit
- ^ a b c d e f g h i Konopacky, Quinn M.; Rameau, Julien; Duchêne, Gaspard; Filippazzo, Joseph C.; Godfrey, Paige A. Giorla; Marois, Christian; Nielsen, Eric L.; Pueyo, Laurent; Rafikov, Roman R. (2016). "Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562". The Astrophysical Journal Letters. 829 (1): L4. arXiv:1608.06660. Bibcode:2016ApJ...829L...4K. doi:10.3847/2041-8205/829/1/L4. ISSN 2041-8205. S2CID 44216698.
- ^ a b c d e Sutlieff, Ben J.; Bohn, Alexander J.; Birkby, Jayne L.; Kenworthy, Matthew A.; Morzinski, Katie M.; Doelman, David S.; Males, Jared R.; Snik, Frans; Close, Laird M.; Hinz, Philip M.; Charbonneau, David (2021). "High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph". Monthly Notices of the Royal Astronomical Society. 506 (3): 3224–3238. arXiv:2106.14890. Bibcode:2021MNRAS.506.3224S. doi:10.1093/mnras/stab1893.
- ^ "HR 2562". NASA Exoplanet Archive.
- ^ a b c "Planet HR 2562 b". exoplanet.eu. February 13, 2023. Retrieved December 30, 2023.
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