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DENIS J081730.0−615520
DENIS J081730.0−615520 (also known as 2MASS 08173001−6155158) is a T dwarf, T-type brown dwarf away in the constellation Carina (constellation), Carina. It was discovered by Etienne Artigau and his colleagues in April 2010. The brown dwarf belongs to the T6 spectral class, with a photosphere temperature of about 1000 K. It has a mass of about 15 MJ (Jupiter masses) or about 1.5% the Solar mass, mass of the Sun. DENIS J081730.0-615520 is the fourth-nearest isolated T dwarf to the Sun (after UGPS J0722−0540, WISEPA J174124.26+255319.5, WISE 1741+2553, and WISE 1506+7027) and the eighth-nearest (also after Luhman 16B, Epsilon Indi, ε Indi Bab and SCR 1845-6357B) if one takes into account T dwarfs in multiple star systems. 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. DENIS J081730.0−615520 was observed with Gemini Observatory, Gemini South. This spectrum did result to the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carina (constellation)
Carina ( ) is a constellation in the southern sky. Its name is Latin for the keel of a ship, and it was the southern foundation of the larger constellation of Argo Navis (the ship ''Argo'') until it was divided into three pieces, the other two being Puppis (the poop deck), and Vela (constellation), Vela (the sails of the ship). History and mythology Carina was once a part of Argo Navis, the great ship of the mythical Jason and the Argonauts who searched for the Golden Fleece. The constellation of Argo was introduced in ancient Greece. However, due to the massive size of Argo Navis and the sheer number of stars that required separate designation, Nicolas-Louis de Lacaille divided Argo into three sections in 1763, including Carina (the hull or keel). In the 19th century, these three became established as separate constellations, and were formally included in the list of 88 modern IAU constellations in 1930. Lacaille kept a single set of Greek letters for the whole of Argo, and sep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
