2022ApJ...927...13Z

Query : 2022ApJ...927...13Z

2022ApJ...927...13Z - Astrophys. J., 927, 13-13 (2022/March-1)

Metal-poor Stars Observed with the Southern African Large Telescope II. An Extended Sample.

ZEPEDA J., RASMUSSEN K.C., BEERS T.C., PLACCO V.M., HUANG Y. and DEPAGNE E.

Abstract (from CDS):

We present results from high-resolution (R ∼ 40,000) spectroscopic observations of over 200 metal-poor stars, mostly selected from the RAVE survey, using the Southern African Large Telescope. We were able to derive stellar parameters for a total of 108 stars; an additional sample of 50 stars from this same effort was previously reported on by Rasmussen et al. Among our newly reported observations, we identify 84 very metal-poor (VMP; [Fe/H] < -2.0, 53 newly identified) stars and three extremely metal-poor (EMP; [Fe/H] < -3.0, one newly identified) stars. The elemental abundances were measured for carbon, as well as several other α-elements (Mg, Ca, Sc, and Ti), iron-peak elements (Mn, Co, Ni, and Zn), and neutron-capture elements (Sr, Ba, and Eu). Based on these measurements, the stars are classified by their carbon and neutron-capture abundances into carbon-enhanced metal-poor (CEMP; [C/Fe] > +0.70), CEMP subclasses, and by the level of their r-process abundances. A total of 17 are classified as CEMP stars. There are 11 CEMP-r stars (eight newly identified), one CEMP-s star (newly identified), two possible CEMP-i stars (one newly identified), and three CEMP-no stars (all newly identified) in this work. We found 11 stars (eight newly identified) that are strongly enhanced in r-process elements (r-II; [Eu/Fe] > +0.70), 38 stars (31 newly identified) that are moderately enhanced in r-process elements (r-I; +0.30 < [Eu/Fe] <= + 0.70), and one newly identified limited-r star.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Milky Way stellar halo - Stellar abundances - Stellar atmospheres - CEMP stars - R-process - Population II stars

VizieR on-line data: <Available at CDS (J/ApJ/927/13): table2.dat table3.dat table4.dat table5.dat table6.dat table7.dat>

Status at CDS : Tables of objects mostly ingested in SIMBAD; some problems could not be solved.

Simbad objects: 110

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Number of rows : 110
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TYC 8464-911-1 Pe* 00 04 38.4229312416 -54 01 33.982347828   13.170 12.375     ~ 9 0
2 TYC 5842-557-1 Pe* 00 12 36.4656045672 -18 16 31.027592748   11.624 10.947     ~ 7 0
3 TYC 9135-908-1 Pe* 00 39 46.9075074168 -68 49 57.361871280   12.416 11.53     CEMP-no 10 0
4 Bok I 98B Pe* 01 08 39.5880317064 -28 57 01.512032472   13.278 12.599 12.450   CEMP-r 22 0
5 UCAC4 182-001071 Pe* 01 16 28.8584744232 -53 43 40.850086908   14.217 13.428 13.386   ~ 4 0
6 UCAC4 206-001222 Pe* 01 20 10.5132350140 -48 49 46.185247672   14.153 13.442 13.306   ~ 3 0
7 BD-16 251 RG* 01 29 31.1311443552 -16 00 45.495314460 12.527 12.427 11.642 11.189 10.713 CEMP 318 0
8 UCAC2 24019755 Pe* 01 38 06.9962445360 -19 52 09.771053808   13.694 12.938 12.85 11.88 ~ 8 0
9 TYC 8046-39-1 Pe* 01 42 54.2096858928 -50 32 48.773874624   11.970 11.339     ~ 16 0
10 CD-49 506 Pe* 01 49 07.9444788408 -49 11 42.923908572   11.944 11.172     CEMP-r 19 0
11 TYC 5861-1732-1 Pe* 02 11 10.1890222248 -19 11 23.817227208   12.03 11.43     ~ 12 0
12 TYC 8858-1148-1 Pe* 02 20 13.3571166072 -60 14 36.175516620   12.823 11.994 11.1 10.936 ~ 15 0
13 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
14 TYC 9145-1448-1 Pe* 03 06 39.1039163832 -69 20 39.573253752   13.136 12.361     CEMP 12 0
15 UCAC4 121-002849 Pe* 03 13 56.3765554656 -65 54 09.520548372     13.424 13.249   CEMP 3 0
16 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
17 CPD-65 261 Pe* 03 42 28.1663475648 -65 00 35.605828368   11.847 11.048     ~ 12 0
18 UCAC4 338-004693 Pe* 04 04 26.5760390640 -22 29 35.643782328   14.224 13.412 13.263   ~ 3 0
19 TYC 8501-374-1 Pe* 04 06 58.7021356992 -54 05 56.012216820   12.924 12.210     CEMP 9 0
20 TYC 5911-452-1 Pe* 04 53 22.6466306640 -22 10 39.457771536   11.05 10.66 10.43   CEMP 17 0
21 UCAC4 222-005456 Pe* 05 02 31.7880025888 -45 40 50.259828700   14.121 13.219 12.972   ~ 3 0
22 UCAC3 110-13466 Pe* 05 06 00.7262983224 -35 10 55.688276784   13.472 12.764 12.74 11.95 ~ 7 0
23 HD 273482 Pe* 05 09 47.5645809408 -44 23 16.762487856   11.99 11.034 10.703 10.352 CEMP 13 0
24 TYC 9378-79-1 Pe* 05 38 16.9847318880 -75 16 20.706482280   12.026 11.207 10.72 10.153 CEMP 29 0
25 UCAC4 174-006979 Pe* 05 51 08.4695097336 -55 23 12.834559140   13.774 12.986 12.883   ~ 5 0
26 TYC 8534-778-1 Pe* 06 19 50.0171045376 -53 12 11.448975276   12.050 11.369     CEMP 19 0
27 UCAC4 215-009305 Pe* 06 34 01.8141366347 -47 07 49.246163253   13.779 12.997 12.891   ~ 3 0
28 UCAC3 42-39233 Pe* 06 37 36.2540199888 -69 29 46.885419852   13.11 12.66 12.62 12.01 ~ 10 0
29 TYC 7094-3072-1 Pe* 07 05 20.2832119848 -33 43 24.296952936   12.558 11.677     CEMP 14 0
30 TYC 8138-1523-1 Pe* 07 48 24.3318260568 -48 31 40.559171376   12.008 11.287     ~ 10 0
31 UCAC4 360-059107 Pe* 10 07 09.2225367144 -18 09 47.441887056   13.081 12.159 11.989   ~ 7 0
32 TYC 6617-372-1 Pe* 10 08 24.9266090904 -23 14 12.425099028   11.744 10.898     CEMP-r 10 0
33 TYC 6630-1505-1 Pe* 10 16 21.5742067320 -29 59 52.050334236   12.488 11.663     CEMP 9 0
34 TYC 6088-1943-1 Pe* 11 26 51.3894868776 -18 05 29.759471592   11.815 11.161     ~ 14 0
35 SCR J1135-1113 Pe* 11 35 08.2692956328 -11 13 27.463782108   13.102 12.697 12.642 12.221 ~ 13 0
36 BD-10 3332 Pe* 11 44 44.7834237192 -11 28 16.740171516   10.42 9.80     G0 21 0
37 BD-01 2582 RG* 11 53 37.3231720128 -02 00 36.728298108   10.29 9.60     CEMP-s 125 0
38 TYC 7742-269-1 Pe* 11 59 41.6827448160 -38 20 42.564561612   13.181 12.257     ~ 10 0
39 CD-30 10002 Pe* 12 35 50.1319287720 -31 31 11.219118744   11.530 10.703 10.26 9.310 CEMP-r 39 0
40 TYC 8651-867-1 Pe* 12 47 18.2546473080 -55 50 47.058213768   12.527 11.325     CEMP 8 0
41 2MASS J12475324-3908018 Pe* 12 47 53.2404273744 -39 08 01.784374368   13.561 12.227 11.48 10.83 CEMP 11 0
42 UCAC2 9722401 Pe* 12 57 28.3311557352 -51 25 21.703776348   12.919 11.920 11.65 10.75 CEMP 11 0
43 UNSW-V 458 Pe* 12 58 07.3179201288 -45 06 27.190447380   14.018 12.462   10.64 ~ 11 0
44 UCAC3 151-146030 Pe* 13 02 31.2217856352 -14 48 05.107564548   12.828 12.320 12.26 11.62 ~ 8 0
45 TYC 6698-415-1 Pe* 13 04 04.1590301280 -24 08 37.195502784   12.879 11.934 11.16 10.793 ~ 13 0
46 TYC 7262-876-1 Pe* 13 04 55.0350679728 -37 12 49.431990852   11.42 11.18     CEMP 6 0
47 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
48 TYC 6722-1134-1 Pe* 13 33 52.8238634928 -26 23 54.012114204   11.853 11.072 10.63 10.047 CEMP 12 0
49 CD-31 10642 Pe* 13 47 23.6718488760 -31 44 09.213920808   12.752 12.003     ~ 17 0
50 UCAC4 298-076708 Pe* 13 57 35.4188685096 -30 32 48.731311068   13.172 12.502 12.425 11.639 ~ 13 0
51 TYC 8665-834-1 Pe* 14 03 29.0019907416 -52 50 42.900117144   11.35 10.64     ~ 7 0
52 CD-33 9514 Pe* 14 03 35.4314575056 -33 35 25.675628820   12.243 11.544 11.02   K1:wl 30 0
53 2MASS J14112614-1137453 Pe* 14 11 26.1475305408 -11 37 45.253452864   13.818 12.370 11.73 10.793 CEMP 17 0
54 UCAC4 271-070254 Pe* 14 12 53.2187363232 -35 52 55.697351736     12.895 12.792   ~ 10 0
55 TYC 6189-285-1 Pe* 15 38 30.8456260680 -18 04 24.290986440   11.725 10.864 10.58 10.529 CEMP 25 0
56 G 152-58 Pe* 15 52 11.1038315408 -14 30 37.418676853   12.386 11.805     ~ 15 0
57 UCAC2 27497364 Pe* 15 58 29.6299383600 -12 24 34.448910336   13.18 12.33 12.21 11.20 ~ 18 0
58 BD-14 4336 Pe* 16 02 44.9893148568 -15 21 01.653050844   11.224 10.345     ~ 12 0
59 UCAC2 31183471 Pe* 16 18 46.9658888304 -01 45 39.994195464   12.920 12.046 11.89 10.96 CEMP 10 0
60 TYC 5038-495-1 Pe* 16 19 43.1082130680 -02 24 30.951782856   13.090 12.302     CEMP 12 0
61 UCAC2 31526614 Pe* 16 53 00.4759521168 -00 55 06.759895008   13.895 12.679 12.35 11.35 ~ 8 0
62 UCAC4 100-092660 Pe* 17 16 33.4048844664 -70 09 02.832579792   14.144 13.133 12.878   CEMP-r 8 0
63 TYC 8348-1861-1 Pe* 17 51 59.7952108992 -47 51 31.014861876   12.349 10.961     CEMP 8 0
64 UCAC2 13007354 Pe* 18 02 42.2736456576 -44 04 42.648519648   13.851 12.621 12.30 11.26 CEMP 19 0
65 UCAC2 10750558 Pe* 18 31 08.2332261216 -49 11 05.271090864   14.143 12.861 12.59 11.50 CEMP 10 0
66 UCAC4 128-171197 Pe* 18 36 23.1865551768 -64 28 12.466785108   13.25 12.51 12.36   ~ 9 0
67 UCAC4 192-189085 Pe* 19 03 18.4468613032 -51 38 51.052550509   14.433 13.547 13.300   ~ 5 0
68 TYC 7925-894-1 Pe* 19 07 33.1311280512 -41 58 31.734313752   12.658 11.550     CEMP 8 0
69 UCAC2 13246632 Pe* 19 09 23.0692355952 -43 53 56.457283164   13.809 12.800 12.60 11.67 CEMP 6 0
70 CD-54 8237 Pe* 19 17 55.8562797552 -54 40 14.805407208   11.568 10.763     CEMP-no 11 0
71 TYC 8773-230-1 Pe* 19 23 25.1843675280 -58 33 41.047906320   12.759 11.829     CEMP 15 0
72 UCAC2 3813797 Pe* 19 28 19.8743419752 -63 39 34.432520112   13.559 12.760 12.55 11.74 ~ 12 0
73 UCAC4 230-182169 Pe* 19 31 02.8254381842 -44 01 57.590128286       12.731   CEMP 8 0
74 UCAC2 5726341 SB* 19 43 18.7034872824 -59 48 19.925125056   13.285 12.545 12.41 11.66 CEMP 9 0
75 UCAC2 14519556 Pe* 19 43 19.0286351397 -40 54 24.892204673   12.444 11.886 11.84 11.22 ~ 7 0
76 UCAC4 253-187742 Pe* 19 45 50.6061041880 -39 26 30.951101724   13.535 12.726 12.564   ~ 16 0
77 TYC 7448-744-1 Pe* 20 00 34.6620898464 -34 20 04.281343584   12.948 12.261     ~ 7 0
78 TYC 6896-1296-1 Pe* 20 00 57.6597633264 -25 41 48.920487756   11.905 10.929     CEMP 9 0
79 UCAC2 9617572 SB* 20 10 07.1021042016 -51 55 02.113517388   12.924 11.824 11.67 10.63 ~ 9 0
80 TYC 6914-800-1 Pe* 20 20 29.1778364280 -27 07 34.815333828   11.991 11.172     CEMP-r 11 0
81 BD-15 5652 Pe* 20 24 32.0438693328 -15 10 28.719885396   11.755 10.852     ~ 7 0
82 UCAC4 238-176332 Pe* 20 24 34.5151400568 -42 33 33.814043712   13.737 13.044 12.974 12.148 CEMP 13 0
83 UCAC4 366-179348 Pe* 20 26 42.5391327734 -16 56 46.732313212   14.170 13.076 12.858   ~ 3 0
84 UCAC2 5728798 Pe* 20 26 54.6758541024 -59 50 13.237907748   13.571 12.786 12.64 11.94 ~ 7 0
85 UCAC2 22122834 Pe* 20 34 28.4371008192 -24 18 30.497501664   13.586 12.736 12.60 11.79 ~ 7 0
86 ATO J309.0942-07.2388 Pe* 20 36 22.6269846576 -07 14 19.839054588   13.46 11.92 11.68 10.35 CEMP 14 0
87 TYC 5763-1226-1 Pe* 20 37 06.3454270296 -12 21 25.072555176   12.833 11.685     CEMP 9 0
88 TYC 8799-1359-1 Pe* 20 43 55.7677560528 -56 36 29.113807536   12.953 12.205     ~ 8 0
89 UCAC2 16079915 Pe* 20 44 50.6511374640 -37 14 00.059167896   13.483 12.350 12.10 11.07 CEMP 12 0
90 TYC 8412-364-1 Pe* 20 49 54.4209690624 -48 00 45.340588620   12.17 11.86     ~ 6 0
91 UCAC2 4695246 Pe* 20 51 49.7289997320 -61 58 00.927831252   12.98 12.31 12.19 11.61 ~ 9 0
92 HD 358059 Pe* 20 56 09.1348060632 -13 31 17.690158776   11.016 10.192     G0 74 0
93 HD 200654 Pe* 21 06 34.7513254468 -49 57 50.280288000   9.74 9.1     CEMP 118 0
94 UCAC2 2203606 Pe* 21 06 42.9488737416 -68 28 26.703682860   13.499 12.799 12.74 11.91 CEMP 18 0
95 DENIS J211525.5-150330 Pe* 21 15 25.5129528744 -15 03 30.986562096   13.07   12.16 11.575 CEMP 14 0
96 UCAC4 248-189527 Pe* 21 19 27.0746740272 -40 29 08.261800368   13.829 13.041 12.808 12.024 ~ 12 0
97 UCAC2 4454230 Pe* 21 29 21.0433250952 -62 09 14.729558256   13.477 12.712 12.60 11.75 ~ 6 0
98 TYC 5801-633-1 Pe* 21 51 18.2943003096 -13 59 36.523903056   12.65 11.93     ~ 7 0
99 UCAC4 229-190249 Pe* 22 02 11.8034635296 -44 17 01.642042824   12.685 12.090 12.054   ~ 13 0
100 CD-41 14740 Pe* 22 04 03.6157846296 -40 29 18.946980636   11.82 11.26     G 18 0
101 UCAC4 110-128280 Pe* 22 12 27.2719558073 -68 10 06.843613459   14.255 13.431 13.368   ~ 8 0
102 BPS CS 29502-0092 Pe* 22 22 35.9982138384 -01 38 27.620508552   12.64 11.87 11.365 10.862 CEMP-no 67 0
103 BD-16 6116 Pe* 22 37 16.2461467128 -16 08 00.664013508   11.045 10.610     CEMP 9 0
104 TYC 6964-83-1 Pe* 22 49 27.5692134888 -22 38 28.941522324   12.999 12.001     ~ 11 0
105 CD-23 17654 SB* 22 53 19.8548690352 -22 48 55.502522964   12.347 11.165     CEMP 11 0
106 UCAC2 9165570 Pe* 22 59 26.8560387432 -52 37 32.626830396   13.205 12.590 12.57 11.64 ~ 7 0
107 TYC 9338-874-1 Pe* 23 02 22.8947875320 -68 33 23.350630572   12.276 11.592     ~ 17 0
108 HE 2310-4523 Pe* 23 13 00.0416103048 -45 07 06.565285596   12.120 11.207 10.55   CEMP-mp 24 0
109 UCAC4 100-104698 Pe* 23 13 16.3871409576 -70 11 22.358801724   13.507 12.754 12.717   ~ 3 0
110 NAME Tuc III G 23 56.6 -59 36           ~ 229 0

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