2020AJ....160..181J

Query : 2020AJ....160..181J

2020AJ....160..181J - Astron. J., 160, 181-181 (2020/October-0)

The Southern Stellar Stream Spectroscopic Survey (S5): chemical Abundances of seven stellar streams.

JI A.P., LI T.S., HANSEN T.T., CASEY A.R., KOPOSOV S.E., PACE A.B., MACKEY D., LEWIS G.F., SIMPSON J.D., BLAND-HAWTHORN J., CULLINANE L.R., DA COSTA G.S., HATTORI K., MARTELL S.L., KUEHN K., ERKAL D., SHIPP N., WAN Z. and ZUCKER D.B.

Abstract (from CDS):

We present high-resolution Magellan/MIKE spectroscopy of 42 red giant stars in seven stellar streams confirmed by the Southern Stellar Stream Spectroscopic Survey (S5): ATLAS, Aliqa Uma, Chenab, Elqui, Indus, Jhelum, and Phoenix. Abundances of 30 elements have been derived from over 10,000 individual line measurements or upper limits using photometric stellar parameters and a standard LTE analysis. This is currently the most extensive set of element abundances for stars in stellar streams. Three streams (ATLAS, Aliqa Uma, and Phoenix) are disrupted metal-poor globular clusters, although only weak evidence is seen for the light-element anticorrelations commonly observed in globular clusters. Four streams (Chenab, Elqui, Indus, and Jhelum) are disrupted dwarf galaxies, and their stars display abundance signatures that suggest progenitors with stellar masses ranging from 106 to 107 M☉. Extensive description is provided for the analysis methods, including the derivation of a new method for including the effect of stellar parameter correlations on each star's abundance and uncertainty. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Globular star clusters - Stellar abundances - Dwarf galaxies - Milky Way stellar halo

VizieR on-line data: <Available at CDS (J/AJ/160/181): table1.dat table2.dat table3.dat table5.dat table6.dat>

Simbad objects: 74

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Number of rows : 74
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 NAME Elqui Stream St* 00 43 -36.9           ~ 22 0
2 Gaia DR3 2349268564550587904 RG* 00 48 54.9710347931 -22 44 58.047214776           ~ 2 0
3 Gaia DR3 2346224467824940544 RG* 00 52 59.3379752495 -22 54 15.575475408           ~ 2 0
4 Gaia DR3 2345957664457105408 RG* 00 58 40.0795224160 -23 51 49.660783170           ~ 2 0
5 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
6 Gaia DR3 5040976937490509184 RG* 01 11 13.0258093521 -24 44 48.247564956           ~ 3 0
7 Gaia DR3 4984799005777773952 RG* 01 12 21.8410535965 -41 33 23.917825701           ~ 1 0
8 Gaia DR3 5040671754294144512 RG* 01 12 21.8410792148 -25 44 52.145393711           ~ 3 0
9 Gaia DR3 5039838702437479936 RG* 01 16 27.0969959494 -26 07 00.936166752           ~ 3 0
10 Gaia DR3 4983776837921214336 RG* 01 19 05.7018436779 -42 07 20.124064586           ~ 1 0
11 Gaia DR3 4984107138085841664 RG* 01 21 23.1132665857 -42 02 09.166985408           ~ 1 0
12 Gaia DR3 4935696500108507776 RG* 01 23 24.6298711003 -43 33 20.016175024           ~ 1 0
13 Gaia DR3 4914426859986001920 RG* 01 23 48.3577834097 -53 57 27.373323089           ~ 2 0
14 Gaia DR3 4914446067079706624 RG* 01 24 36.2660478410 -53 40 01.254052758           ~ 2 0
15 Gaia DR3 4914527911976567424 RG* 01 25 55.1470587104 -53 17 35.127676079           ~ 2 0
16 NAME Phoenix Stream St* 01 35.0 -49 53           ~ 52 0
17 Gaia DR3 4917862490225433984 RG* 01 39 20.8312175454 -49 09 11.717380590           ~ 2 0
18 Gaia DR3 5022844307121290752 RG* 01 40 08.6709089660 -29 52 14.546299303           ~ 3 0
19 Gaia DR3 4954245123830234240 RG* 01 41 53.3680637937 -47 06 51.592090508           ~ 2 0
20 Gaia DR3 4954034292475361280 RG* 01 42 44.2178915392 -47 29 05.205998522           ~ 2 0
21 Gaia DR3 4955727815260641408 RG* 01 48 16.0591755845 -44 20 53.819447111           ~ 2 0
22 Gaia DR3 4956084950380306816 RG* 01 51 02.5002764353 -43 02 40.974841211           ~ 2 0
23 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
24 NAME Aliqa Uma Stream St* 02 07 -31.5           ~ 33 0
25 Gaia DR3 4971176778264340352 RG* 02 09 08.2952473031 -32 46 06.116255520           ~ 2 0
26 Gaia DR3 4971328167270778496 RG* 02 09 58.9156805296 -32 05 39.984614403           ~ 2 0
27 Gaia DR3 4969961611757057536 RG* 02 16 18.9242719809 -34 06 22.905361848           ~ 2 0
28 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
29 Gaia DR3 4966915105554905344 RG* 02 26 26.1986683554 -35 22 26.122034542           ~ 2 0
30 Gaia DR3 4953695608534281088 RG* 02 35 26.1331652961 -37 22 30.162129560           ~ 2 0
31 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
32 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
33 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
34 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
35 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
36 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
37 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
38 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
39 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
40 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
41 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
42 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
43 HD 122563 Pe* 14 02 31.8455084952 +09 41 09.944391876 7.47 7.10 6.19 5.37 4.79 G8:III:Fe-5 920 0
44 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
45 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
46 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
47 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
48 NAME Chenab Stream St* 21 17 -59.9           ~ 45 0
49 NAME Jhelum Stream St* 21 25 -45.1           ~ 40 0
50 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
51 Gaia DR3 6563842426481787264 RG* 21 33 27.1472688824 -46 06 32.457563888           ~ 1 0
52 NAME Indus Stream St* 21 35 -50.7           ~ 34 0
53 Gaia DR3 6562728071447798784 RG* 21 41 13.4388806579 -47 29 01.870621188           ~ 1 0
54 Gaia DR3 6558460660661091456 RG* 21 46 14.5348317437 -52 01 06.566856961           ~ 1 0
55 Gaia DR3 6558441247408890240 RG* 21 48 16.1109389682 -52 11 43.737293292           ~ 1 0
56 Gaia DR3 6461006409605852416 RG* 21 54 09.0811828292 -55 18 34.919864350           ~ 1 0
57 Gaia DR3 6559165825572005120 RG* 21 54 15.4457724335 -49 38 04.966798315           ~ 1 0
58 Gaia DR3 6412885389863009152 RG* 22 00 10.4950829450 -56 04 10.196843982           ~ 1 0
59 Gaia DR3 6412626111278092544 RG* 22 05 30.9625970070 -56 30 53.298561947           ~ 4 0
60 Gaia DR3 6411531547451908480 RG* 22 11 27.2431822593 -58 04 44.614441348           ~ 1 0
61 Gaia DR3 6511949016704646272 RG* 22 16 19.5552941520 -50 00 21.049152624           ~ 2 0
62 Gaia DR3 6516771371624716288 RG* 22 36 29.9851704186 -50 24 42.214109139           ~ 1 0
63 Gaia DR3 6513867905012445696 RG* 22 41 59.0346300011 -50 13 01.684800711           ~ 1 0
64 Gaia DR3 6407002315459841152 RG* 22 43 18.1692545883 -60 54 22.443758508           ~ 1 0
65 Gaia DR3 6514001358235953280 RG* 22 48 24.4015220348 -50 19 51.474289297           ~ 1 0
66 Gaia DR3 6394607108562733440 RG* 22 56 57.6812315132 -62 41 37.468147677           ~ 1 0
67 NAME Sylgr Stream St* 23 02 -14.           ~ 24 0
68 Gaia DR3 6502308120794799616 RG* 23 12 15.1048541485 -51 09 36.480376996           ~ 1 0
69 Gaia DR3 6501458404465460992 RG* 23 18 34.7229980966 -52 02 10.116167207           ~ 1 0
70 Gaia DR3 6390575508661401216 RG* 23 24 01.7633958454 -64 02 20.751415132           ~ 3 0
71 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
72 NAME Gaia Enceladus-Sausage St* ~ ~           ~ 860 0
73 NAME ATLAS Stream St* ~ ~           ~ 44 0
74 NAME Fimbulthul Stream St* ~ ~           ~ 32 0

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