Gliese 758 B

Gliese 758 B
	; Discovery image of Gliese 758 B, taken with Subaru HiCIAO in the near infrared.
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Lyra
Right ascension	19h 23m 34.01358s
Declination	+33° 13′ 19.0725″
Characteristics
Spectral type	T8
Details
Temperature	600±100 K
Mass	23+17; −13 MJup
Position (relative to Gliese 758)
Component	Gliese 758 B
Observed separation; (projected)	21.1+2.7; −1.3 AU
Database references
SIMBAD	data
Extrasolar Planets; Encyclopaedia	data

Gliese 758 B (often shortened to GJ 758 B) is a brown dwarf or Super-Jupiter orbiting the G-type main sequence star Gliese 758, located approximately 50 light years away, in the constellation Lyra.

Gliese 758 B was detected by direct imaging using the HiCIAO instrument of the Subaru Telescope.^[3]^[4]^[5] The parameters have subsequently been revised in a follow-up study which also revealed that a putative second substellar object in the system was in fact an unrelated background star.^[6]

Orbit[]

Gliese 758 B orbits its host star in an eccentric orbit with a semimajor axis of 21.1+2.7
−1.3 Astronomical units and an orbital period of 96+21
−9 years, which takes it within 9 astronomical units at its closest approach.^[7]

References[]

^ ^a ^b van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
^ ^a ^b ^c Vigan, A.; Bonnefoy, M.; Ginski, C.; Beust, H.; Galicher, R.; Janson, M.; Baudino, J.-L.; Buenzli, E.; Hagelberg, J.; D’Orazi, V.; Desidera, S.; Maire, A.-L.; Gratton, R.; Sauvage, J.-F.; Chauvin, G.; Thalmann, C.; Malo, L.; Salter, G.; Zurlo, A.; Antichi, J.; Baruffolo, A.; Baudoz, P.; Blanchard, P.; Boccaletti, A.; Beuzit, J.-L.; Carle, M.; Claudi, R.; Costille, A.; Delboulbé, A.; Dohlen, K.; Dominik, C.; Feldt, M.; Fusco, T.; Gluck, L.; Girard, J.; Giro, E.; Gry, C.; Henning, T.; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Lagrange, A.-M.; Langlois, M.; Le Mignant, D.; Llored, M.; Madec, F.; Martinez, P.; Mawet, D.; Mesa, D.; Milli, J.; Mouillet, D.; Moulin, T.; Moutou, C.; Origné, A.; Pavlov, A.; Perret, D.; Petit, C.; Pragt, J.; Puget, P.; Rabou, P.; Rochat, S.; Roelfsema, R.; Salasnich, B.; Schmid, H.-M.; Sevin, A.; Siebenmorgen, R.; Smette, A.; Stadler, E.; Suarez, M.; Turatto, M.; Udry, S.; Vakili, F.; Wahhaj, Z.; Weber, L.; Wildi, F. (16 February 2016). "First light of the VLT planet finder SPHERE". Astronomy & Astrophysics. 587: A55. arXiv:1511.04076. Bibcode:2016A&A...587A..55V. doi:10.1051/0004-6361/201526465. S2CID 8734031.
^ Thalmann, Christian (2009). "Discovery of the Coldest Imaged Companion of a Sun-Like Star". The Astrophysical Journal. 707 (2): L123–L127. arXiv:0911.1127v1. Bibcode:2009ApJ...707L.123T. doi:10.1088/0004-637X/707/2/L123. S2CID 116823073.
^ "Possible Planet Around a G-class Star". Centauri Dreams. 2009-12-04. Retrieved 2009-12-04.
^ "Discovery of an Exoplanet Candidate Orbiting a Sun-Like Star: Inaugural Observations with Subaru's New Instrument HiCIAO". Subaru Telescope. 2009-12-03. Retrieved 2009-12-04.
^ Janson, M.; Carson, J.; Thalmann, C.; McElwain, M. W.; Goto, M.; Crepp, J.; Wisniewski, J.; Abe, L.; Brandner, W.; Burrows, Adam; Egner, S.; Feldt, M.; Grady, C. A.; Golota, T.; Guyon, Olivier; Hashimoto, J.; Hayano, Y.; Hayashi, M.; Hayashi, S.; Henning, T.; Hodapp, K. W.; Ishii, M.; Iye, M.; Kandori, R.; Knapp, G. R.; Kudo, T.; Kusakabe, N.; Kuzuhara, M.; Matsuo, T.; et al. (2011). "Near-infrared Multi-band Photometry of the Substellar Companion GJ 758 B". The Astrophysical Journal. 728 (2): 85. arXiv:1011.5505. Bibcode:2011ApJ...728...85J. doi:10.1088/0004-637X/728/2/85. S2CID 119296265.
^ Bowler, Brendan P.; et al. (2018). "Orbit and Dynamical Mass of the Late-T Dwarf Gl 758 B". The Astronomical Journal. 155 (4): 159. arXiv:1802.10126. Bibcode:2018AJ....155..159B. doi:10.3847/1538-3881/aab2a6. S2CID 54816662.

External links[]

Animation of GJ 758 B's orbit compared to outer Solar System

Coordinates: 19^h 23^m 34.0^s, +33° 13′ 19.1″

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[aaa474_2_653-1] van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.

[Vigan2016-2] Vigan, A.; Bonnefoy, M.; Ginski, C.; Beust, H.; Galicher, R.; Janson, M.; Baudino, J.-L.; Buenzli, E.; Hagelberg, J.; D’Orazi, V.; Desidera, S.; Maire, A.-L.; Gratton, R.; Sauvage, J.-F.; Chauvin, G.; Thalmann, C.; Malo, L.; Salter, G.; Zurlo, A.; Antichi, J.; Baruffolo, A.; Baudoz, P.; Blanchard, P.; Boccaletti, A.; Beuzit, J.-L.; Carle, M.; Claudi, R.; Costille, A.; Delboulbé, A.; Dohlen, K.; Dominik, C.; Feldt, M.; Fusco, T.; Gluck, L.; Girard, J.; Giro, E.; Gry, C.; Henning, T.; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Lagrange, A.-M.; Langlois, M.; Le Mignant, D.; Llored, M.; Madec, F.; Martinez, P.; Mawet, D.; Mesa, D.; Milli, J.; Mouillet, D.; Moulin, T.; Moutou, C.; Origné, A.; Pavlov, A.; Perret, D.; Petit, C.; Pragt, J.; Puget, P.; Rabou, P.; Rochat, S.; Roelfsema, R.; Salasnich, B.; Schmid, H.-M.; Sevin, A.; Siebenmorgen, R.; Smette, A.; Stadler, E.; Suarez, M.; Turatto, M.; Udry, S.; Vakili, F.; Wahhaj, Z.; Weber, L.; Wildi, F. (16 February 2016). "First light of the VLT planet finder SPHERE". Astronomy & Astrophysics. 587: A55. arXiv:1511.04076. Bibcode:2016A&A...587A..55V. doi:10.1051/0004-6361/201526465. S2CID 8734031.

[subaru-image-3] Thalmann, Christian (2009). "Discovery of the Coldest Imaged Companion of a Sun-Like Star". The Astrophysical Journal. 707 (2): L123–L127. arXiv:0911.1127v1. Bibcode:2009ApJ...707L.123T. doi:10.1088/0004-637X/707/2/L123. S2CID 116823073.

[centdreams-news-4] "Possible Planet Around a G-class Star". Centauri Dreams. 2009-12-04. Retrieved 2009-12-04.

[subaru-release-5] "Discovery of an Exoplanet Candidate Orbiting a Sun-Like Star: Inaugural Observations with Subaru's New Instrument HiCIAO". Subaru Telescope. 2009-12-03. Retrieved 2009-12-04.

[Janson2011-6] Janson, M.; Carson, J.; Thalmann, C.; McElwain, M. W.; Goto, M.; Crepp, J.; Wisniewski, J.; Abe, L.; Brandner, W.; Burrows, Adam; Egner, S.; Feldt, M.; Grady, C. A.; Golota, T.; Guyon, Olivier; Hashimoto, J.; Hayano, Y.; Hayashi, M.; Hayashi, S.; Henning, T.; Hodapp, K. W.; Ishii, M.; Iye, M.; Kandori, R.; Knapp, G. R.; Kudo, T.; Kusakabe, N.; Kuzuhara, M.; Matsuo, T.; et al. (2011). "Near-infrared Multi-band Photometry of the Substellar Companion GJ 758 B". The Astrophysical Journal. 728 (2): 85. arXiv:1011.5505. Bibcode:2011ApJ...728...85J. doi:10.1088/0004-637X/728/2/85. S2CID 119296265.

[Bowler2018-7] Bowler, Brendan P.; et al. (2018). "Orbit and Dynamical Mass of the Late-T Dwarf Gl 758 B". The Astronomical Journal. 155 (4): 159. arXiv:1802.10126. Bibcode:2018AJ....155..159B. doi:10.3847/1538-3881/aab2a6. S2CID 54816662.

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Observation data Epoch J2000.0 Equinox J2000.0
Discovery image of Gliese 758 B, taken with Subaru HiCIAO in the near infrared.
Constellation	Lyra
Right ascension	19^h 23^m 34.01358^s^[1]
Declination	+33° 13′ 19.0725″^[1]
Characteristics
Spectral type	T8^[2]
Details

Temperature	600±100^[2] K

Mass	23⁺¹⁷ ₋₁₃^[2] M_Jup
Position (relative to Gliese 758)
Component	Gliese 758 B
Observed separation (projected)	21.1+2.7 −1.3 AU
Database references
SIMBAD	data
Extrasolar Planets Encyclopaedia	data