2001A&A...371..560G


Query : 2001A&A...371..560G

2001A&A...371..560G - Astronomy and Astrophysics, volume 371, 560-570 (2001/5-4)

A search for faint galactic carbon stars from the First Byurakan Spectral Sky Survey. I.

GIGOYAN K., MAURON N., AZZOPARDI M., MURATORIO G. and ABRAHAMYAN H.V.

Abstract (from CDS):

We present and analyse in this paper the first results of a systematic search for Galactic carbon (C) stars using the First Byurakan Spectral Sky Survey (FBS). The present surveyed area extends over ∼6140 deg2 on the sky corresponding to ∼1/3 of the complete FBS Survey. Accurate positions, spectral classifications, approximate B and R magnitudes, and finding charts are provided for 35 objects. Identification and spectral subclasses (R or N) of those stars, belonging to the magnitude range 10.5≤R≤16.4, were determined by scrutinizing the Byurakan Schmidt telescope objective-prism plates. Subsequent slit-spectroscopic observations were obtained by us for 21 stars, confirming the carbon nature of them all. From this result, it is assumed that the remaining C star candidates are most likely carbon-rich stars as well. 18 of the listed objects at a Galactic latitude (|b|>30°) are faint enough (R>11.0) to be considered as Faint High Latitude Carbon (FHLC) stars according to the definition of Totten & Irwin (1998MNRAS.294....1T). JHK magnitudes for 23 objects of our list are provided by the 2MASS database. Approximate distances are estimated from R and/or JHK data. Most of the stars are located between d≃7 and d≃25kpc from the Sun while their distances z to the Galactic plane range from about 2 to 25kpc. The most distant object of our sample is found at d≃45kpc and z≃40kpc. It is interesting to note that the rate of newly discovered FBS FHLC stars - one object per 200deg2 - is comparable to that achieved by other previous surveys. Consequently it is reasonable to expect that the full exploitation of the FBS plates might result in the identification of about 45 new FHLC stars.

Abstract Copyright:

Journal keyword(s): stars: carbon - surveys - Galaxy: halo - Galaxy: stellar content

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 FBS 0102-110 Pe* 01 05 03.1596755472 -10 49 14.109837337   15.80 14.80 14.51 13.40 C 5 0
2 IRAS 01373+4000 C* 01 40 20.6277893152 +40 15 19.009916624   17.5 14.0     C-N 16 0
3 FBS 0144+369 C* 01 47 36.2937871005 +37 12 29.131134634     15     C-N 11 0
4 FBS 0259+444 C* 03 02 27.0263666960 +44 38 29.058797962     13.5     C-H 6 0
5 IRAS F03242+3854 C* 03 27 31.3877490082 +39 04 50.217236160     13.5     C-N 10 0
6 FBS 0328+390 C* 03 31 33.5870052037 +39 14 49.978289587     13.49     C-N 11 0
7 IRAS F03369+3835 C* 03 40 18.1171595602 +38 45 38.413163962     12.8     C-N 8 0
8 FBS 0518+687 C* 05 24 00.0864730738 +68 50 00.393149935   15.58 12.50 11.91   C-N 8 0
9 IRAS 06450+3732 C* 06 48 23.4165676652 +37 28 56.508613184     14.70     C-N 14 0
10 FBS 0644+616 Pe* 06 49 11.0872339587 +61 33 18.245735183     12.5     C-H 6 0
11 IRAS F06567+3510 C* 07 00 01.7322237000 +35 05 56.016931086     13.5     C-N 8 0
12 C* 3279 C* 07 06 07.7748339109 +40 12 01.327878498     12.19     C-N 14 0
13 FBS 0800+368 C* 08 03 52.8263744313 +36 44 43.156403792     13.5     C-N 8 0
14 FBS 0846-071 Pe* 08 49 10.9700064311 -07 21 44.380817854           C-H 7 0
15 FBS 0922+786 C* 09 28 48.5675800256 +78 25 46.208331570   13.84 12.16 11.84   C-H 6 0
16 FBS 0947-087 C*? 09 49 30.2387442712 -08 59 37.424138231           C? 3 0
17 FBS 1056+399 C* 10 59 23.8522843543 +39 44 05.828706034   16.61 14.35 12.81   C-N 13 0
18 FBS 1127+782 C* 11 31 04.1978151615 +77 59 46.283702095           C-H 5 0
19 FBS 1331+421 C* 13 33 19.3757396928 +41 54 51.193534607     13     C-N 7 0
20 [TI98] 1339-0700 RS* 13 42 26.7981365432 -07 15 23.093662131   15.44 13.10     C-N 13 0
21 FBS 1416+640 C* 14 18 07.6824488414 +63 49 07.013040523   16.15 13.89 12.93   C-N 8 1
22 FBS 1431-079 C* 14 34 32.6247737414 -08 08 36.869038572   15.01 13.50     C-H 8 1
23 FBS 1434-080 C* 14 37 25.9541755949 -08 16 41.703310315           C-H 4 0
24 FBS 1435-092 PM* 14 37 46.3248230502 -09 26 56.877317666           dM 4 0
25 FBS 1502+359 C* 15 04 55.3025792788 +35 47 57.524602180     14.39     C-N 15 0
26 IRAS 15151+6637 C* 15 15 45.3848946669 +66 26 04.552232173   14.92 11.96 11.71   C-H 7 0
27 FBS 1618-087 C* 16 21 36.2704685621 -08 53 18.690365801         10.99 C-N 11 1
28 FBS 1713+527 C* 17 14 47.5098201317 +52 40 06.643895519   17.04 14.30 13.22   C-N 9 0
29 IRAS F19191+8658 C* 19 01 03.9836211965 +87 03 44.512989451   14.17 11.95 11.10   C-N 7 0
30 V* V2177 Cyg C* 19 35 18.8492338822 +54 39 53.426399290           C-N 10 0
31 FBS 2123-104 C* 21 26 06.2224696865 -10 13 46.194262645           C-N 6 0
32 FBS 2143-081 * 21 46 37.9863049162 -07 53 10.709413072   16.42 15.61 15.47   M3/4 5 1
33 FBS 2144-089 * 21 46 40.6054108656 -08 41 05.075772404   16.46 15.21 14.72   M3/4 5 1
34 FBS 2207-095 C* 22 09 57.4802814560 -09 16 06.011025474   14.92 13.10   11.761 C-N 9 0
35 IRAS 22193+3320 C* 22 21 38.5701726053 +33 35 58.747836690           C-N 11 0

    Equat.    Gal    SGal    Ecl

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2021.07.25-22:01:07

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