DENIS J081730.0−615520

DENIS J081730.0−615520
	DENIS J081730.0−615520 Location of DENIS J081730.0−615520 in the constellation Carina;
Observation data; Epoch J2000 Equinox J2000
Constellation	Carina
Right ascension	08h 17m 29.99888s
Declination	−61° 55′ 15.6586″
Characteristics
Spectral type	T6
Apparent magnitude (J)	13.613±0.024
J−H color index	0.087 ± 0.039
J−K color index	0.093 ± 0.049
Astrometry
Proper motion (μ)	RA: −156.451(507) mas/yr ; Dec.: 1,099.366(503) mas/yr
Parallax (π)	191.8362 ± 0.4186 mas
Distance	17.00 ± 0.04 ly ; (5.21 ± 0.01 pc)
Details
Radius	0.94±0.16 RJup
Temperature	1004±91 K
Rotation	2.8±0.2 hours
Age	1 Gyr
Other designations
	DENIS J081730.0−615520; 2MASS J08173001-6155158; WISEPA J081729.74−615504.1
Database references
SIMBAD	data

DENIS J081730.0−615520 (also known as 2MASS 08173001−6155158) is a T-type brown dwarf 17 light-years (5.2 parsecs) away in the constellation Carina. It was discovered by Etienne Artigau and his colleagues in April 2010.^[2] The brown dwarf belongs to the T6 spectral class, with a photosphere temperature of about 1000 K.^[4] It has a mass of about 15 M_J (Jupiter masses) or about 1.5% the mass of the Sun.^{[failed verification]}

DENIS J081730.0-615520 is the fourth-nearest isolated T dwarf to the Sun (after UGPS J0722−0540, WISE 1741+2553, and WISE 1506+7027) and the eighth-nearest (also after Luhman 16B, ε Indi Bab and SCR 1845-6357B) if one takes into account T dwarfs in multiple star systems.^[7] It is also the brightest T dwarf in the sky (in the J-band); it had been missed before due to its proximity to the galactic plane.^[2]

References[edit]

^ ^a ^b ^c ^d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ ^a ^b ^c ^d ^e ^f Artigau, Etienne; Radigan, Jacqueline; Folkes, Stuart; et al. (2010). "DENIS J081730.0-615520: An overlooked mid-T dwarf in the solar neighborhood". The Astrophysical Journal Letters. 718 (1): L38–L42. arXiv:1006.3577. Bibcode:2010ApJ...718L..38A. doi:10.1088/2041-8205/718/1/L38. S2CID 118687449.
^ ^a ^b Vos, Johanna M.; Biller, Beth A.; Allers, Katelyn N.; Faherty, Jacqueline K.; Liu, Michael C.; Metchev, Stanimir; Eriksson, Simon; Manjavacas, Elena; Dupuy, Trent J.; Janson, Markus; Radigan-Hoffman, Jacqueline; Crossfield, Ian; Bonnefoy, Mickaël; Best, William M. J.; Homeier, Derek; Schlieder, Joshua E.; Brandner, Wolfgang; Henning, Thomas; Bonavita, Mariangela; Buenzli, Esther (2020), "Spitzer Variability Properties of Low-gravity L Dwarfs", The Astronomical Journal, 160 (1): 38, arXiv:2005.12854, Bibcode:2020AJ....160...38V, doi:10.3847/1538-3881/ab9642, S2CID 218889787
^ ^a ^b Kirkpatrick, J. Davy; Gelino, Christopher R.; et al. (March 2021). "The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs". The Astrophysical Journal Supplement Series. 253 (1): 7. arXiv:2011.11616. Bibcode:2021ApJS..253....7K. doi:10.3847/1538-4365/abd107. S2CID 227126954.
^ Radigan, Jacqueline; Lafrenière, David; Jayawardhana, Ray (October 2014). "Strong Brightness Variations Signal Cloudy-to-clear Transition of Brown Dwarfs". The Astrophysical Journal. 793 (2): 75. arXiv:1404.3247. Bibcode:2014ApJ...793...75R. doi:10.1088/0004-637X/793/2/75. S2CID 118357522.
^ Kirkpatrick, J. Davy; Cushing, Michael C.; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Mainzer, Amy K.; Eisenhardt, Peter R.; McLean, Ian S.; Thompson, Maggie A.; Bauer, James M.; Benford, Dominic J.; Bridge, Carrie R.; Lake, Sean E.; Petty, Sara M.; Stanford, Spencer Adam; Tsai, Chao-Wei; Bailey, Vanessa; Beichman, Charles A.; Bloom, Joshua S.; Bochanski, John J.; Burgasser, Adam J.; Capak, Peter L.; Cruz, Kelle L.; Hinz, Philip M.; Kartaltepe, Jeyhan S.; Knox, Russell P.; Manohar, Swarnima; Masters, Daniel; Morales-Calderon, Maria; Prato, Lisa A.; Rodigas, Timothy J.; Salvato, Mara; Schurr, Steven D.; Scoville, Nicholas Z.; Simcoe, Robert A.; Stapelfeldt, Karl R.; Stern, Daniel; Stock, Nathan D.; Vacca, William D. (2011). "The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)". The Astrophysical Journal Supplement. 197 (2): 19. arXiv:1108.4677v1. Bibcode:2011ApJS..197...19K. doi:10.1088/0067-0049/197/2/19. S2CID 16850733.
^ Reylé, Céline; Jardine, Kevin; Fouqué, Pascal; Caballero, Jose A.; Smart, Richard L.; Sozzetti, Alessandro (30 April 2021). "The 10 parsec sample in the Gaia era". Astronomy & Astrophysics. 650: A201. arXiv:2104.14972. Bibcode:2021A&A...650A.201R. doi:10.1051/0004-6361/202140985. S2CID 233476431. Data available at https://gruze.org/10pc/

External links[edit]

Astronomers Announce First Clear Evidence of a Brown Dwarf – STScI news release STScI-1995-48 (November 29, 1995)

This brown dwarf-related article is a stub. You can help Wikipedia by expanding it.

[GaiaDR3-1] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[Artigau2010-2] ^ ^a ^b ^c ^d ^e ^f Artigau, Etienne; Radigan, Jacqueline; Folkes, Stuart; et al. (2010). "DENIS J081730.0-615520: An overlooked mid-T dwarf in the solar neighborhood". The Astrophysical Journal Letters. 718 (1): L38–L42. arXiv:1006.3577. Bibcode:2010ApJ...718L..38A. doi:10.1088/2041-8205/718/1/L38. S2CID 118687449.

[Vos2020-3] Vos, Johanna M.; Biller, Beth A.; Allers, Katelyn N.; Faherty, Jacqueline K.; Liu, Michael C.; Metchev, Stanimir; Eriksson, Simon; Manjavacas, Elena; Dupuy, Trent J.; Janson, Markus; Radigan-Hoffman, Jacqueline; Crossfield, Ian; Bonnefoy, Mickaël; Best, William M. J.; Homeier, Derek; Schlieder, Joshua E.; Brandner, Wolfgang; Henning, Thomas; Bonavita, Mariangela; Buenzli, Esther (2020), "Spitzer Variability Properties of Low-gravity L Dwarfs", The Astronomical Journal, 160 (1): 38, arXiv:2005.12854, Bibcode:2020AJ....160...38V, doi:10.3847/1538-3881/ab9642, S2CID 218889787

[Kirkpatrick2021-4] Kirkpatrick, J. Davy; Gelino, Christopher R.; et al. (March 2021). "The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs". The Astrophysical Journal Supplement Series. 253 (1): 7. arXiv:2011.11616. Bibcode:2021ApJS..253....7K. doi:10.3847/1538-4365/abd107. S2CID 227126954.

[Radigan2014-5] Radigan, Jacqueline; Lafrenière, David; Jayawardhana, Ray (October 2014). "Strong Brightness Variations Signal Cloudy-to-clear Transition of Brown Dwarfs". The Astrophysical Journal. 793 (2): 75. arXiv:1404.3247. Bibcode:2014ApJ...793...75R. doi:10.1088/0004-637X/793/2/75. S2CID 118357522.

[Kirkpatrick2011-6] Kirkpatrick, J. Davy; Cushing, Michael C.; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Mainzer, Amy K.; Eisenhardt, Peter R.; McLean, Ian S.; Thompson, Maggie A.; Bauer, James M.; Benford, Dominic J.; Bridge, Carrie R.; Lake, Sean E.; Petty, Sara M.; Stanford, Spencer Adam; Tsai, Chao-Wei; Bailey, Vanessa; Beichman, Charles A.; Bloom, Joshua S.; Bochanski, John J.; Burgasser, Adam J.; Capak, Peter L.; Cruz, Kelle L.; Hinz, Philip M.; Kartaltepe, Jeyhan S.; Knox, Russell P.; Manohar, Swarnima; Masters, Daniel; Morales-Calderon, Maria; Prato, Lisa A.; Rodigas, Timothy J.; Salvato, Mara; Schurr, Steven D.; Scoville, Nicholas Z.; Simcoe, Robert A.; Stapelfeldt, Karl R.; Stern, Daniel; Stock, Nathan D.; Vacca, William D. (2011). "The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)". The Astrophysical Journal Supplement. 197 (2): 19. arXiv:1108.4677v1. Bibcode:2011ApJS..197...19K. doi:10.1088/0067-0049/197/2/19. S2CID 16850733.

[Reylé2021-7] Reylé, Céline; Jardine, Kevin; Fouqué, Pascal; Caballero, Jose A.; Smart, Richard L.; Sozzetti, Alessandro (30 April 2021). "The 10 parsec sample in the Gaia era". Astronomy & Astrophysics. 650: A201. arXiv:2104.14972. Bibcode:2021A&A...650A.201R. doi:10.1051/0004-6361/202140985. S2CID 233476431. Data available at https://gruze.org/10pc/

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Observation data Epoch J2000 Equinox J2000
DENIS J081730.0−615520 Location of DENIS J081730.0−615520 in the constellation Carina
Constellation	Carina
Right ascension	08^h 17^m 29.99888^s^[1]
Declination	−61° 55′ 15.6586″^[1]
Characteristics
Spectral type	T6^[2]
Apparent magnitude (J)	13.613±0.024^[2]
J−H color index	0.087 ± 0.039^[2]
J−K color index	0.093 ± 0.049^[2]
Astrometry

Proper motion (μ)	RA: −156.451(507) mas/yr^[1] Dec.: 1,099.366(503) mas/yr^[1]
Parallax (π)	191.8362 ± 0.4186 mas^[1]
Distance	17.00 ± 0.04 ly (5.21 ± 0.01 pc)

Details

Radius	0.94±0.16^[3] R_Jup
Temperature	1004±91^[4] K
Rotation	2.8±0.2 hours^[5]
Age	1^[3] Gyr

Other designations
DENIS J081730.0−615520 2MASS J08173001-6155158 WISEPA J081729.74−615504.1^[6]
Database references
SIMBAD	data