Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey

Details Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey

2004-05-28

arxiv.org/abs/astro-ph/0405566v1

Astrophys.J. 612 (2004) L129-L132

Astronomy and Astrophysics

Astrophysics

15 pages, 3 figures, submitted to ApJL. Higher resolution versions of finding charts are available at http://astro.uchicago.

Scientific paper

10.1086/424568

We report the discovery of five very cool white dwarfs in the Sloan Digital Sky Survey (SDSS). Four are ultracool, exhibiting strong collision induced absorption (CIA) from molecular hydrogen and are similar in color to the three previously known coolest white dwarfs, SDSS J1337+00, LHS 3250 and LHS 1402. The fifth, an ultracool white dwarf candidate, shows milder CIA flux suppression and has a color and spectral shape similar to WD 0346+246. All five new white dwarfs are faint (g > 18.9) and have significant proper motions. One of the new ultracool white dwarfs, SDSS J0947, appears to be in a binary system with a slightly warmer (T_{eff} ~ 5000K) white dwarf companion.

Affiliated with

Also associated with

No associations

Rating

Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey 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 Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-445595