2005A&A...442..309H

Query : 2005A&A...442..309H

2005A&A...442..309H - Astronomy and Astrophysics, volume 442309-314 (2005/10-4)

Spectral analyses of DO white dwarfs and PG 1159 stars from the Sloan Digital Sky Survey.

HUEGELMEYER S.D., DREIZLER S., WERNER K., KRZESINSKI J., NITTA A. and KLEINMAN S.J.

Abstract (from CDS):

We present a model atmosphere analysis of ten new DO white dwarfs and five new PG1159 stars discovered in the Sloan Digital Sky Survey DR1, DR2 and DR3. This is a significant increase in the number of known DOs and PG1159 stars. DO white dwarfs are situated on the white dwarf cooling sequence from the upper hot end (Teff≃120000K) down to the DB gap (Teff≃45000K). PG1159 stars on the other hand feature effective temperatures which exceed Teff=65000K with an upper limit of Teff=200000K and are the proposed precursors of DO white dwarfs. Improved statistics are necessary to investigate the evolutionary link between these two types of stars. From optical SDSS spectra effective temperatures, surface gravities and element abundances are determined by means of non-LTE model atmospheres.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: fundamental parameters - stars: evolution - stars: AGB and post-AGB - stars: white dwarfs

Simbad objects: 17

goto Full paper

goto View the references in ADS

Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PB 5835 WD* 00 16 51.4153668936 -01 13 29.300107908   16   17.41   PG1159 23 0
2 GALEX J034101.3+005353 WD* 03 41 01.3946045856 +00 53 52.921063176   17.38 18.03     DO 16 0
3 GALEX J034227.6-072212 WD* 03 42 27.6240653688 -07 22 13.267809804   17.20 17.88     DO 22 0
4 KUV 07523+4017 WD* 07 55 40.9407521736 +40 09 17.910022752   17.00 17.53     PG1159 24 0
5 GALEX J084008.7+325114 WD* 08 40 08.7205921800 +32 51 14.608748916   18.20 18.93     DO 15 0
6 SBSS 0910+584 WD* 09 14 33.5975611320 +58 12 38.119111740   17.15 17.79     DO 25 0
7 SBSS 1020+541 WD* 10 23 27.4218578112 +53 52 58.706674968   17.5 17.91     PG1159 23 0
8 SDSS J110215.45+024034.1 HS* 11 02 15.4576572936 +02 40 34.333042044           sdOHe 20 0
9 PG 1133+489 ** 11 36 09.5961625656 +48 43 18.932567988   16.20 14.22     DB+dM 41 0
10 V* GW Vir WD* 12 01 45.9731868264 -03 45 40.628670300   14.87 15.04     DOQZ1 505 0
11 PG 1314+003 WD* 13 17 24.7478552856 +00 02 37.381355736   15.97       DO 33 1
12 FBS 1342+673 WD* 13 43 41.8834097904 +67 01 54.512227344           PG1159 26 0
13 GALEX J140409.9+045740 WD* 14 04 09.9523506456 +04 57 40.013018748   16.96 17.71     DO 17 0
14 SBSS 1446+575 WD* 14 47 34.1180967672 +57 20 53.108181168   17.28 18.05     PG1159 20 0
15 GALEX J154752.3+423211 WD* 15 47 52.3353687984 +42 32 10.828741056   17.09 17.81     DO 14 0
16 GALEX J155356.7+483228 WD* 15 53 56.8002486888 +48 32 28.593680352           DO 17 0
17 GALEX J204159.0+000326 WD* 20 41 58.9730999136 +00 03 25.442636256   18.35 19.06     DAO 12 0

To bookmark this query, right click on this link: simbad:objects in 2005A&A...442..309H and select 'bookmark this link' or equivalent in the popup menu