SIMBAD references

2009ApJ...707L.123T - Astrophys. J., 707, L123-L127 (2009/December-3)

Discovery of the coldest imaged companion of a Sun-like star.

THALMANN C., CARSON J., JANSON M., GOTO M., McELWAIN M., EGNER S., FELDT M., HASHIMOTO J., HAYANO Y., HENNING T., HODAPP K.W., KANDORI R., KLAHR H., KUDO T., KUSAKABE N., MORDASINI C., MORINO J.-I., SUTO H., SUZUKI R. and TAMURA M.

Abstract (from CDS):

We present the discovery of a brown dwarf or possible planet at a projected separation of 1".9 = 29 AU around the star GJ 758, placing it between the separations at which substellar companions are expected to form by core accretion (∼5 AU) or direct gravitational collapse (typically ≳100 AU). The object was detected by direct imaging of its thermal glow with Subaru/HiCIAO. At 10-40 times the mass of Jupiter and a temperature of 550-640 K, GJ 758 B constitutes one of the few known T-type companions, and the coldest ever to be imaged in thermal light around a Sun-like star. Its orbit is likely eccentric and of a size comparable to Pluto's orbit, possibly as a result of gravitational scattering or outward migration. A candidate second companion is detected at 1".2 at one epoch.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: low-mass, brown dwarfs - techniques: high angular resolution

Simbad objects: 7

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2020.10.26-05:18:34

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