A Possible Brown Dwarf Companion to the White Dwarf GD1400

Details A Possible Brown Dwarf Companion to the White Dwarf GD1400 A Possible Brown Dwarf Companion to the White Dwarf GD1400

2004-07-01

arxiv.org/abs/astro-ph/0407036v1

Astronomy and Astrophysics

Astrophysics

14 pages, 3 figures, 1 table, accepted to AJ

Scientific paper

10.1086/423919

An unresolved, likely L dwarf companion to the DA white dwarf GD1400 is reported. This would be only the second such system known, discovered 17 years after the prototype L dwarf, GD165B, was determined to be a companion to a white dwarf. Photometric observations and model predicted stellar parameters of the well studied white dwarf primary indicate that GD1400B has $J-K\ga2.0$ and $M_K=12.13$ mag. If correct, this would place GD1400B at spectral type L6, and it would be the lowest luminosity unevolved companion known to a white dwarf, and thus a definite brown dwarf. However, a low resolution Keck NIRSPEC $2.1-2.4\mu$m spectrum may not be consistent with known L dwarfs. Uncertainties in classification remain until the binary is resolved or a trigonometric parallax is measured.

Affiliated with

Also associated with

No associations

Rating

A Possible Brown Dwarf Companion to the White Dwarf GD1400 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Possible Brown Dwarf Companion to the White Dwarf GD1400, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Possible Brown Dwarf Companion to the White Dwarf GD1400 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-203159