2010MNRAS.404L..40V


Query : 2010MNRAS.404L..40V

2010MNRAS.404L..40V - Mon. Not. R. Astron. Soc., 404, L40-L44 (2010/May-1)

The heavily polluted atmosphere of the DAZ white dwarf GALEX J193156.8+011745.

VENNES S., KAWKA A. and NEMETH P.

Abstract (from CDS):

We report on the discovery of a new heavily polluted white dwarf. The DAZ white dwarf GALEX J193156.8+011745 was identified in a joint Galaxy Evolution Explorer (GALEX)/GSC survey of ultraviolet-excess objects. Optical spectra obtained at ESO New Technology Telescope show strong absorption lines of magnesium and silicon, and a detailed abundance analysis based on Very Large Telescope-Kueyen UVES spectra reveal super-solar abundances of silicon and magnesium and near-solar abundances of oxygen, calcium and iron. The overall abundance pattern bears the signature of on-going accretion on to the white dwarf atmosphere. The infrared spectral energy distribution shows an excess in the H and K bands likely associated with the accretion source.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): stars: abundance - stars: individual: GALEX J193156.8+011745 - white dwarfs

Nomenclature: [VKN2010] GALEX J193156.8+011745 N=1.

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 WD 0137-349 WD* 01 39 42.8531929464 -34 42 39.577891392 14.60 15.33 15.30     DA3 83 0
2 GD 40 WD* 03 02 53.1037481136 -01 08 33.798683976   15.51 15.56     DBZ4 160 0
3 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 255 0
4 SDSS J104341.53+085558.2 WD* 10 43 41.5313708256 +08 55 58.340933400           DAZ 54 0
5 SDSS J122859.92+104033.0 WD* 12 28 59.9341604496 +10 40 33.045988944           DAZe: 124 0
6 LAWD 52 WD* 13 38 50.4780906644 +70 17 07.640657534 11.807 12.54 12.60 13.01 12.979 DA2.4 211 0
7 NAME Proxima Centauri Er* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1192 0
8 GD 362 WD* 17 31 34.3168718112 +37 05 20.711767812   16.3   16.4   DAZB 166 0
9 GALEX J193156.8+011745 WD* 19 31 56.9316163968 +01 17 44.107104876     14.20     DAZ 59 1
10 PHL 5028 blu 22 19.5 -11 17   17.2       ~ 2 0
11 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 612 1
12 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.17   13.0   DA4.1 470 0

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2023.02.06-06:47:09

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