2011A&A...532A..69R


Query : 2011A&A...532A..69R

2011A&A...532A..69R - Astronomy and Astrophysics, volume 532A, 69-69 (2011/8-1)

Revised classification of the SBS carbon star candidates including the discovery of a new emission line dwarf carbon star.

ROSSI C., GIGOYAN K.S., AVTANDILYAN M.G. and SCLAVI S.

Abstract (from CDS):

Faint high-latitude carbon stars are rare objects commonly thought to be distant, luminous giants. For this reason, they are often used to probe the structure of the Galactic halo; however, more accurate investigation of photometric and spectroscopic surveys has revealed an increasing percentage of nearby objects with luminosities of main sequence stars. In the General Catalogue of the Second Byurakan Survey (SBS) only ten objects are indicated as carbon star candidates. This work aims at clarifying the nature of these stars. We analyzed new optical spectra and photometry and used astronomical databases available on the web. We verified that two stars are N-type giants already confirmed by other surveys. We found that four candidates are M type stars and confirmed the carbon nature of the remaining four stars; the characteristics of three of them are consistent with an early CH giant type. The fourth candidate, SBS1310+561 identified with a high proper motion star, is a rare type of dwarf carbon showing emission lines in its optical spectrum. We estimated absolute magnitudes and distances to the dwarf carbon and the three CH stars. Our limited sample confirmed the increasing evidence that spectroscopy or colour alone are not conclusive luminosity discriminants for CH-type carbon stars.

Abstract Copyright:

Journal keyword(s): surveys - stars: carbon - stars: individual object : SSBS1310+561

VizieR on-line data: <Available at CDS (J/A+A/532/A69): stars.dat spectra/*>

Simbad objects: 23

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Number of rows : 23
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 HD 5223 Pe* 00 54 13.6098985200 +24 04 01.515842760   9.88 8.47     C-H2IIIb: 118 0
2 V* V Ari Pe* 02 15 00.0771848760 +12 14 23.612094312   10.8 9.80     C-H3.5 103 0
3 G 77-61 Pe* 03 32 38.0920129269 +01 58 00.084645962   15.60 13.90 12.9   dC-J_CH5 129 0
4 V* ES Lyn C* 07 52 04.0092417576 +53 56 53.392547976   13.9 11.1 10.0   N 8 0
5 SBSS 0759+533 Pe* 08 03 12.4187572872 +53 11 34.103224140   14.13 13.08 12.39 11.64 C-H 2 0
6 PG 0824+289 ** 08 27 05.0513883201 +28 44 02.776899477   14.73 14.27     DA+dC 71 0
7 C* 3287 C* 08 36 27.6518656344 +53 17 51.704986020     11.2     N 8 0
8 V* X UMa Mi* 08 40 49.5073410864 +50 08 11.977900116   12.16 11.53     M4e 41 0
9 BPS BS 16922-0066 LP* 08 57 44.2563155904 +52 47 28.391742924   14.66 12.52 11.66 8.03 M9 6 0
10 2MASS J08585328+0122435 Pe* 08 58 53.2806736944 +01 22 43.451196168           dCe 7 0
11 CLS 29 Pe* 10 40 06.3718957968 +35 48 02.378242116     15.0     Ce-CH 11 0
12 Wolf 358 BY* 10 50 52.0312380389 +06 48 29.259617410 14.532 13.319 11.675 10.459 8.889 M4V 247 0
13 CLS 50 C* 12 20 00.7542226560 +36 48 01.624366692     16.0     C 14 0
14 SBSS 1310+561 Pe* 13 12 42.4966769904 +55 55 54.425940744   16.42 14.44 13.89 13.12 dC 5 0
15 V* RX Boo AB* 14 24 11.6253191184 +25 42 13.394221596   9.23 8.60     M7.5-M8 431 0
16 SBSS 1444+503 * 14 46 36.3481272648 +50 11 27.524016132   18.89 16.95 16.37 14.57 M4V 1 0
17 V* AY Dra Mi* 15 38 39.3288924264 +57 01 33.478308804   10.60       M7: 11 0
18 SBSS 1543+555 Pe* 15 45 22.4043454152 +55 21 32.936487048   16.69 14.71 14.18 13.61 C-H 2 0
19 SBSS 1701+555 C* 17 02 05.5687337040 +55 27 13.544768016   16.43 15.01 14.10 13.41 C-H 1 0
20 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13179 0
21 V* RV Sct C* 18 44 25.1720934384 -13 12 47.659212684   12.46 9.94     C-R4+ 35 0
22 HD 191408 PM* 20 11 11.9387690214 -36 06 04.351725607   5.44 5.32     K2.5V 254 1
23 HD 191408B PM* 20 11 12.2 -36 06 09           M3.5 225 1

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2022.09.24-17:32:26

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