2004A&A...421.1169W


Query : 2004A&A...421.1169W

2004A&A...421.1169W - Astronomy and Astrophysics, volume 421, 1169-1183 (2004/7-3)

Chandra and FUSE spectroscopy of the hot bare stellar core H1504+65.

WERNER K., RAUCH T., BARSTOW M.A. and KRUK J.W.

Abstract (from CDS):

object{H1504+65} is an extremely hot hydrogen-deficient white dwarf with an effective temperature close to 200000K. We present new FUV and soft X-ray spectra obtained with FUSE and Chandra, which confirm that H1504+65 has an atmosphere primarily composed of carbon and oxygen. The Chandra LETG spectrum (60-160Å) shows a wealth of photospheric absorption lines from highly ionized oxygen, neon, and - for the first time identified in this star - magnesium and suggests relatively high Ne and Mg abundances. This corroborates an earlier suggestion that H1504+65 represents a naked C/O stellar core or even the C/O envelope of an O-Ne-Mg white dwarf.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - stars: evolution - stars: AGB and post-AGB - stars: white dwarfs - stars: individual: H1504+65

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 KPD 0005+5106 WD* 00 08 18.1703149584 +51 23 16.598370912 11.80 13.04 13.32 13.53   DOZ1 118 0
2 1ES 0439-68.2 CV* 04 39 49.64 -68 09 01.4   21.5 21.7     Ss 61 0
3 V* GW Vir WD* 12 01 45.9731868264 -03 45 40.628670300   14.87 15.04     DOQZ1 475 0
4 PG 1501+664 WD* 15 02 09.6299323152 +66 12 19.148868324   16.07 16.37     DZQ1 153 0
5 PN K 1-16 PN 18 21 52.1086837968 +64 21 53.406292104   14.44 14.96 15.26   PG1159 242 0
6 MWP 1 PN 21 17 08.2817782392 +34 12 27.415995372     12.33     PG1159 179 0

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2022.05.21-15:14:11

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