2004A&A...413..323A

Query : 2004A&A...413..323A

2004A&A...413..323A - Astronomy and Astrophysics, volume 413, 323-327 (2004/1-1)

Physical parameters of helium-rich subdwarf B stars from spectral energy distributions.

AHMAD A. and JEFFERY C.S.

Abstract (from CDS):

We present effective temperatures and angular radii for eleven helium-rich subdwarf B stars. These are measured using spectral energy distributions from archival IUE spectra and existing optical and infrared photometry. The data have been analysed using a grid of high-gravity helium-rich LTE model atmospheres and a χ²-minimization procedure. The parameters derived here allow for independent verification of the parameters derived from the analysis of optical spectra.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar - stars: early-type - subdwarfs - stars: atmospheres - stars: fundamental parameters

Simbad objects: 13

Full paper

View the references in ADS

Number of rows : 13

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2024	#notes
1	EGGR 508	WD*	00 03 31.6265277744	-16 43 58.413431892		14.68	14.58	14.90	DB4	40	0
2	PG 0240+046	HS*	02 43 22.7759776704	+04 50 36.322903536					sdBC0.2VIIHe24	26	0
3	WG 7	WD*	03 09 47.9177537304	-56 23 49.411222764		13.99	14.14	14.42	DB	54	0
4	LB 1766	HS*	04 59 18.7820628456	-53 52 54.594838668	10.88	12.25	12.91		sdBHe	18	0
5	PG 0902+057	HS*	09 05 05.3568844320	+05 33 01.013354316		13.81	14.03		sdBN0VIIHe38	19	0
6	PG 1127+019	HS*	11 30 03.7029891192	+01 37 37.249820904		13.01	13.853		sdOC9VIIHe40	24	1
7	PG 1413+114	HS*	14 15 49.0544405496	+11 12 13.919058468	14.58	15.9	16.07	16.0	sdOC9.5VIIHe39	22	0
8	BPS CS 22871-0019	HS*	14 34 29.8472726664	-19 21 28.695553704	11.87	12.97	13.25		sdOHe	9	0
9	PG 1544+488	HS*	15 46 11.6930203944	+48 38 37.228874928		12.52	12.79	13.08	sdBC1VIIpHe39	48	1
10	PG 1559+222	HS*	16 01 13.8144858384	+22 05 46.420001844		14.52			sdBN0.2VIIHe38	13	0
11	LS IV -14 116	HS*	20 57 38.8746228912	-14 25 43.991016852	11.63	12.73	13.02	13.28	sdB0.5VIIHe18	77	0
12	JL 87	HS*	21 48 37.7351993616	-76 20 44.612786472	11.04	11.96	12.07		sdBHe	38	0
13	PG 2321+214	HS*	23 24 27.4677335040	+21 38 51.320825304		12.89			sdBN0VIIHe37	22	0

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