|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Hot DB White Dwarfs from the Sloan Digital Sky Survey | | Daniel J. Eisenstein
; James Liebert
; Detlev Koester
; S.J. Kleinmann
; Atsuko Nitta
; Paul S. Smith
; J.C. Barentine
; Howard J. Brewington
; J. Brinkmann
; Michael Harvanek
; Jurek Krzesinski
; Eric H. Neilsen Jr.
; Dan Long
; Donald P. Schneider
; Stephanie A. Snedden
; | | Date: |
29 Jun 2006 | | Abstract: | We present ugriz photometry and optical spectroscopy for 28 DB and DO white dwarfs with temperatures between 28,000K and 45,000K. About 10 of these are particularly well-observed; the remainder are candidates. These are the hottest DB stars yet found, and they populate the "DB gap" between the hotter DO stars and the familiar DB stars cooler than 30,000K. Nevertheless, after carefully matching the survey volumes, we find that the ratio of DA stars to DB/DO stars is a factor of 2.5 larger at 30,000 K than at 20,000 K, suggesting that the "DB gap" is indeed deficient and that some kind of atmospheric transformation takes place in roughly 10% of DA stars as they cool from 30,000 K to 20,000 K. | | Source: | arXiv, astro-ph/0606702 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER