1997A&AS..125..501J


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.08CEST21:52:14

1997A&AS..125..501J - Astron. Astrophys., Suppl. Ser., 125, 501-510 (1997/November-1)

The classification of helium-rich hot subdwarfs.

JEFFERY C.S., DRILLING J.S., HARRISON P.M., HEBER U. and MOEHLER S.

Abstract (from CDS):

Spectroscopy has been obtained of 23 subluminous stars, twenty of which had been classified as ``helium-rich subdwarf B stars'' from 10Å resolution spectra. From inspection of the HeII, HeI and Balmer lines, the sample clearly shows a wider range in HeII/HeI and He/H ratios than hitherto supposed for the class. We introduce a classification scheme for helium-rich hot subdwarfs based on 1.5Å spectra of high S/N, which can be extended to include all hot subdwarfs with spectra dominated by H, HeI or HeII. The aim of this classification scheme is to establish reference standards which would be suitable for subsequent fine analysis.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: subdwarfs

Status at CDS:  

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HS 1000+4704 HS* 10 03 24.1007308546 +46 49 45.743609271   17.2       sdBC0.2VIIHe28 11 0
2 PG 1230+067 HS* 12 33 23.1938755317 +06 25 17.762763972   12.94 13.20 13.52   sdBN0VIIHe39 11 0
3 Ton 107 HS* 12 42 01.7340520192 +43 40 23.424011361   17.0 16.819 17.0   sdBC0.2VIIHe27 16 0
4 PG 1413+114 HS* 14 15 49.0546718556 +11 12 13.917447602 14.58 15.9 16.07 16.0   sdOC9.5VIIHe39 15 0
5 PG 1415+492 HS* 14 17 02.7631678611 +48 57 28.500481561   14.15 14.30 14.67   sdBC1VHe38 13 0
6 PG 1437+727 HS* 14 37 31.8870904969 +72 28 51.696288355   13.74 13.26 15.78   sdO7?He3 9 0
7 PG 1441+407 HS* 14 43 21.3407358559 +40 28 34.205960972   16.00 16.32 16.36   sdO7VIIHe40 15 0
8 PG 1526+440 HS* 15 28 02.5334611866 +43 50 16.566987183   15.39 15.64     sdBC0.2VIIHe26 12 0
9 PG 1544+488 HS* 15 46 11.6932759584 +48 38 37.226255710   12.52 12.79 13.08   sdBC1VIIpHe39 35 0
10 PG 1552+464 WD* 15 54 26.2667990862 +46 17 08.135937555   16.01       DBA 7 0
11 PG 1554+408 HS* 15 55 50.3924586827 +40 38 53.901324316   15.93       sdBN0.2VIIHe39 12 0
12 PG 1559+222 HS* 16 01 13.8145370295 +22 05 46.422780343   14.52       sdBN0.2VIIHe38 10 0
13 PG 1600+171 HS* 16 03 04.0754183689 +16 59 53.912372398   16.3   17.3   sdOC8VIIHe39 12 0
14 HD 144941 pA* 16 09 24.5510961490 -27 13 38.185973432 9.45 10.17 10.02     B8 78 1
15 PG 1607+174 HS* 16 09 54.9286328809 +17 14 57.169793881   11.80 11.64     sdB2VIIHe18 8 0
16 PG 1615+413 HS* 16 17 40.1146447447 +41 12 51.640523081   16.8   17.4   sdBN1VIIHe37 16 0
17 PG 1629+466 HS* 16 31 17.7248896323 +46 31 00.337314617   13.61 13.81 14.12   sdBN0.2VIIHe29 7 0
18 PG 1648+315 HS* 16 50 22.0468510051 +31 27 49.697460386   16.0   15.90   sdBC0.5VIIHe28 8 0
19 PG 1658+273 HS* 17 00 14.1169803564 +27 12 37.300247043   15.75 15.85 16.12   sdOC9.5VIIHe39 7 0
20 PG 1715+273 HS* 17 17 03.1530877853 +27 16 37.012143348   16.6   16.9   sdB1VIIHe35 11 0
21 LS IV +06 2 HS* 18 06 55.4521585474 +06 21 57.246646760   12.11 12.14 12.32   sdBC1VHe39 29 0
22 LS 5121 HS* 18 43 16.6074662402 -18 31 27.931892064 12.8 13.58 13.25 13.39   sdBC0IIHe40 18 0
23 LS IV -14 116 HS* 20 57 38.8745387224 -14 25 43.995275738 11.63 12.73 13.02 13.28   sdB0.5VIIHe18 57 0
24 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 730 0
25 PG 2215+151 HS* 22 17 48.2205413081 +15 20 57.378570667   14.34 14.53 14.79   sdOC9VIIHe40 17 0
26 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 546 1

    Equat.    Gal    SGal    Ecl

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2020.04.08-21:52:14

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