2018A&A...614A..68C


Query : 2018A&A...614A..68C

2018A&A...614A..68C - Astronomy and Astrophysics, volume 614A, 68-68 (2018/6-1)

Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS.

CAFFAU E., GALLAGHER A.J., BONIFACIO P., SPITE M., DUFFAU S., SPITE F., MONACO L. and SBORDONE L.

Abstract (from CDS):


Aims. Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar astrophysics community.
Methods. We analysed a sample of low-resolution spectra of 30 dwarf stars, obtained using the visual and near UV FOcal Reducer and low dispersion Spectrograph for the Very Large Telescope (FORS/VLT) of the European Southern Observatory (ESO) and the Gemini Multi-Object Spectrographs (GMOS) at the GEMINI telescope, to derive their metallicity and carbon abundance.
Results. We derived C and Ca from all spectra, and Fe and Ba from the majority of the stars.
Conclusions. We have extended the population statistics of CEMP stars and have confirmed that in general, stars with a high C abundance belonging to the high C band show a high Ba-content (CEMP-s or -r/s), while stars with a normal C abundance or that are C-rich, but belong to the low C band, are normal in Ba (CEMP-no).

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: Population II - stars: abundances - Galaxy: abundances - Galaxy: formation - Galaxy: halo

VizieR on-line data: <Available at CDS (J/A+A/614/A68): table1.dat table2.dat>

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 - 2022
#notes
1 SDSS J001547.45+001326.6 Pe* 00 15 47.4477722016 +00 13 26.593934772           CEMP 1 0
2 SDSS J004036.97+002540.7 Pe* 00 40 36.9774949128 +00 25 40.623538008           CEMP 1 0
3 SDSS J004252.51+005521.8 Pe* 00 42 52.5161232120 +00 55 21.870852348           CEMP 1 0
4 BPS CS 31082-0001 Pe* 01 29 31.1311443552 -16 00 45.495314460 12.527 12.427 11.642 11.189 10.713 CEMP 266 0
5 SDSS J022226.20-031338.0 Pe* 02 22 26.2023177312 -03 13 38.002037052           CEMP 5 0
6 SDSS J030929.93+054246.4 Pe* 03 09 29.9263504392 +05 42 46.473884604           CEMP 1 0
7 SDSS J034635.17-055818.3 Pe* 03 46 35.1834602376 -05 58 18.388101360           CEMP 1 0
8 SDSS J090536.50+033034.5 Pe* 09 05 36.4950883464 +03 30 34.663003488           CEMP 1 0
9 SDSS J111434.26-120214.0 Pe* 11 14 34.2644335608 -12 02 14.053188696           CEMP 1 0
10 SDSS J114932.51+072347.0 Pe* 11 49 32.5226790960 +07 23 47.071891212           CEMP 1 0
11 SDSS J124841.09-072646.6 Pe* 12 48 41.09472 -07 26 46.6584           CEMP 1 0
12 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 1379 0
13 2MASS J13132688-0019415 Pe* 13 13 26.8884339336 -00 19 41.336280264           CEMP-no 25 0
14 SDSS J131550.68+172707.0 Pe* 13 15 50.6796868632 +17 27 07.167651264           CEMP 1 0
15 GPM 204.269657+08.589919 Pe* 13 37 04.6993769400 +08 35 23.415379656   15.9       CEMP 3 0
16 SDSS J133750.48+083610.8 Pe* 13 37 50.4789093312 +08 36 10.915441344   16.7   16.2   CEMP 2 0
17 2MASS J13375336+0837343 Pe* 13 37 53.3656925376 +08 37 34.272372828   16.0   15.0   CEMP 3 0
18 SDSS J133802.22+083056.2 Pe* 13 38 02.2228206408 +08 30 56.247260040           CEMP 1 0
19 SDSS J134247.69+083521.0 Pe* 13 42 47.7029346480 +08 35 21.137698644           CEMP 1 0
20 SDSS J134343.08+081029.3 Pe* 13 43 43.0854163848 +08 10 29.322835212           CEMP 2 0
21 NAME SDSS J1349-0229 Pe* 13 49 13.5415394784 -02 29 42.784646424           CEMP-s 23 0
22 SDSS J141123.09+050345.6 Pe* 14 11 23.0895836376 +05 03 45.652137480           CEMP 1 0
23 SDSS J144533.32-004559.0 Pe* 14 45 33.3308179656 -00 45 59.040464760           CEMP 2 0
24 SDSS J154338.58+092904.9 Pe* 15 43 38.5878071208 +09 29 04.986849192           CEMP 1 0
25 SDSS J160646.36+052218.2 Pe* 16 06 46.3642133112 +05 22 18.271743384           CEMP 1 0
26 SDSS J201114.15-111003.9 Pe* 20 11 14.1539459400 -11 10 03.756821556           CEMP 1 0
27 SDSS J212351.59-080416.3 Pe* 21 23 51.5890757688 -08 04 16.399384428           CEMP 2 0
28 SDSS J213752.52-005754.3 Pe* 21 37 52.5186893712 -00 57 54.360985032           CEMP 1 0
29 BPS CS 22892-0052 Pe* 22 17 01.6558764360 -16 39 27.051026544   14.03 13.20 13.06 12.19 KIIvw 427 0
30 SDSS J221911.25+051519.5 Pe* 22 19 11.2536709728 +05 15 19.700091036           CEMP 1 0
31 SDSS J223946.42-004827.7 Pe* 22 39 46.4243961360 -00 48 27.706120272           CEMP 1 0
32 SDSS J231108.61+002650.3 Pe* 23 11 08.6068893168 +00 26 50.381252592           CEMP 1 0
33 SDSS J233526.49+081905.9 Pe* 23 35 26.4938838240 +08 19 05.950542720           CEMP 1 0
34 SDSS J233757.06+143607.2 Pe* 23 37 57.0576587688 +14 36 07.270318188           CEMP 1 0
35 HE 2356-0410 Pe* 23 59 13.1419841280 -03 53 48.220213560   14.39 13.60 13.164 12.713 CEMP-no 83 0

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2022.05.28-10:58:01

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