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Star in the constellation Carina
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 MJ (
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
^
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
Primary member
type
Celestial objects by systems. Secondary members are listed in small print.
Main-sequence stars
G-type
Tau Ceti (11.9118± 0.0074 ly)
4 (8?) planets: (b), (c), (d), e, f, g, h, (i)
K-type
M-type(red dwarfs)
Ross 248 (10.3057± 0.0014 ly)
Lacaille 9352 (10.7241± 0.0007 ly)
2 (3?) planets: b, c, d?
Ross 128 (11.0074± 0.0011 ly)
planet
b
EZ Aquarii (11.109± 0.034 ly)
2 red dwarfs: B, C
Struve 2398 (11.4908± 0.0009 ly)
red dwarf B
2? planets: Bb?, Bc?
Groombridge 34 (11.6191± 0.0008 ly)
red dwarf B
2 planets:
Ab ,
Ac
DX Cancri (11.6797± 0.0027 ly)
GJ 1061 (11.9839± 0.0014 ly)
3 planets: b, c, d
YZ Ceti (12.1222± 0.0015 ly)
3 planets: b, c, d
Luyten's Star (12.3485± 0.0019 ly)
2 (4?) planets:
b , c, d?, e?
Teegarden's Star (12.4970± 0.0045 ly)
2 planets:
b ,
c
Kapteyn's Star (12.8308± 0.0008 ly)
Lacaille 8760 (12.9472± 0.0018 ly)
SCR 1845−6357 (13.0638± 0.0070 ly)
T-type brown dwarf B
Kruger 60 (13.0724± 0.0052 ly)
red dwarf B
DENIS J1048−3956 (13.1932± 0.0027 ly)
Ross 614 (13.363± 0.040 ly)
red dwarf B
Wolf 1061 (14.0500± 0.0016 ly)
3 planets:
b ,
c ,
d
Gliese 1 (14.1747± 0.0022 ly)
TZ Arietis (14.5780± 0.0046 ly)
planet b
Wolf 424 (14.595± 0.031 ly)
red dwarf B
Gliese 687 (14.8395± 0.0014 ly)
2 planets: b, c
Gliese 674 (14.8492± 0.0018 ly)
planet
b
LHS 292 (14.8706± 0.0041 ly)