2015A&A...580A.129S

C.D.S. - SIMBAD4 rel 1.7 - 2021.03.09CET12:10:45

2015A&A...580A.129S - Astronomy and Astrophysics, volume 580A, 129-129 (2015/8-1)

Sulphur in the Sculptor dwarf spheroidal galaxy. Including NLTE corrections.

SKULADOTTIR A., ANDRIEVSKY S.M., TOLSTOY E., HILL V., SALVADORI S., KOROTIN S.A. and PETTINI M.

Abstract (from CDS):

In Galactic halo stars, sulphur has been shown to behave like other α-elements, but until now, no comprehensive studies have been done on this element in stars of other galaxies. Here, we use high-resolution ESO VLT/FLAMES/GIRAFFE spectra to determine sulphur abundances for 85 stars in the Sculptor dwarf spheroidal galaxy, covering the metallicity range -2.5≤[Fe/H]≤-0.8. The abundances are derived from the SI triplet at 9213, 9228, and 9238Å. These lines have been shown to be sensitive to departure from local thermodynamic equilibrium, i.e. NLTE effects. Therefore, we present new NLTE corrections for a grid of stellar parameters covering those of the target stars. The NLTE-corrected sulphur abundances in Sculptor show the same behaviour as other α-elements in that galaxy (such as Mg, Si, and Ca). At lower metallicities ([Fe/H]≲-2) the abundances are consistent with a plateau at [S/Fe]≃+0.16, similar to what is observed in the Galactic halo, [S/Fe]≃+0.2. With increasing [Fe/H], the [S/Fe] ratio declines, reaching negative values at [Fe/H]>-1.5. The sample also shows an increase in [S/Mg] with [Fe/H], most probably because of enrichment from Type Ia supernovae.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - galaxies: abundances - galaxies: evolution - galaxies: individual: Sculptor dwarf spheroidal - galaxies: dwarf

VizieR on-line data: <Available at CDS (J/A+A/580/A129): tablea1.dat tablea2.dat>

Simbad objects: 87

Full paper

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Number of rows : 87

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2021	#notes
1	2MASS J00590860-3342295	RG*	00 59 08.6093479605	-33 42 29.641891071		17.975		16.89	~	13	0
2	2MASS J00591183-3341252	RG*	00 59 11.8369452711	-33 41 25.396799537		17.476		16.297	~	7	0
3	UCAC4 282-001099	Pe*	00 59 12.099	-33 46 20.87			16.36	15.98	~	6	0
4	2MASS J00591514-3339438	RG*	00 59 15.1362238168	-33 39 43.993567074		18.060		16.9	~	6	0
5	2MASS J00591515-3342547	RG*	00 59 15.1496433830	-33 42 54.829220192		17.651		16.34	~	7	0
6	2MASS J00591884-3342175	RG*	00 59 18.8519426693	-33 42 17.660764237		17.599		16.23	~	7	0
7	2MASS J00592065-3348566	RG*	00 59 20.6548592684	-33 48 56.733864547		17.136		15.789	~	6	0
8	2MASS J00592081-3344049	RG*	00 59 20.8106118012	-33 44 04.966883247		17.210		15.985	~	8	0
9	2MASS J00592213-3349037	RG*	00 59 22.1276580242	-33 49 03.819511694		17.969		16.75	~	6	0
10	2MASS J00592830-3342073	RG*	00 59 28.2992623536	-33 42 07.403794654		17.118		15.405	M1	16	0
11	GB07 Scl13	RR*	00 59 30.4429072186	-33 36 05.178640251		17.947		16.732	~	12	0
12	GB07 Scl26	RR*	00 59 30.4983318636	-33 39 04.089427252		17.981		16.967	~	7	0
13	2MASS J00593500-3350557	RG*	00 59 35.0239905915	-33 50 55.930506928		18.235		17.184	~	6	0
14	2MASS J00593698-3330283	RG*	00 59 36.9963426385	-33 30 28.412503739		17.706		16.43	~	8	0
15	2MASS J00593723-3337106	RG*	00 59 37.2295840144	-33 37 10.671926460		17.608		16.339	~	7	0
16	2MASS J00593757-3343336	RG*	00 59 37.5754058506	-33 43 33.609396926		18.012		16.734	~	9	0
17	2MASS J00593774-3336000	RG*	00 59 37.7514924597	-33 36 00.132984544		17.541		16.19	~	7	0
18	2MASS J00593811-3335080	RG*	00 59 38.1222481992	-33 35 08.121117005		17.537		16.157	~	12	0
19	2MASS J00594045-3335539	RG*	00 59 40.4694526442	-33 35 53.981473077		17.699		16.427	~	9	0
20	2MASS J00594140-3338470	RG*	00 59 41.4061050853	-33 38 47.129895415		17.615		16.387	~	7	0
21	2MASS J00594193-3345027	RG*	00 59 41.939	-33 45 02.75		18.337			~	3	0
22	2MASS J00594258-3342182	RG*	00 59 42.5846361567	-33 42 18.220189729	18.95	17.563		16.15	~	9	0
23	2MASS J00594490-3344350	RG*	00 59 44.9118671791	-33 44 35.088448485		18.126		16.829	~	9	0
24	GB07 Scl57	RR*	00 59 45.3193292526	-33 43 53.848530360	19.01	17.913		16.689	~	10	0
25	2MASS J00594641-3341233	RG*	00 59 46.4184190436	-33 41 23.404479563		17.304		15.695	~	15	0
26	2MASS J00594721-3333370	RG*	00 59 47.2195904322	-33 33 37.071502929		17.608		16.451	~	10	0
27	2MASS J00594768-3347293	RG*	00 59 47.6780627636	-33 47 29.414180730		17.814		16.426	M	12	0
28	2MASS J00594992-3344050	RG*	00 59 49.9180678069	-33 44 05.073980088	18.92	17.827		16.57	~	7	0
29	[CDB2005] 7-3-243	RR*	00 59 50.7907374816	-33 31 47.229582154		17.982		16.871	~	4	0
30	2MASS J00595228-3344546	RG*	00 59 52.2831143803	-33 44 54.732756262	18.57	17.150		15.743	~	11	0
31	2MASS J00595306-3343583	RG*	00 59 53.0837524908	-33 43 58.554406000	19.52	18.470		17.31	~	7	0
32	2MASS J00595400-3337421	RG*	00 59 53.9906119767	-33 37 42.190887060	18.98	17.847		16.568	~	10	0
33	2MASS J00595422-3340270	RG*	00 59 54.2190683252	-33 40 27.065146835	18.84	17.480		16.044	~	11	0
34	GB07 Scl23	RR*	00 59 54.4771752926	-33 37 53.478489651	18.76	17.770		16.608	~	11	0
35	2MASS J00595563-3333246	RG*	00 59 55.6380234837	-33 33 24.702775226		16.890		15.806	~	7	0
36	2MASS J00595568-3346400	RG*	00 59 55.6840300710	-33 46 40.035965746	18.48	17.233		15.845	~	11	0
37	2MASS J00595586-3345435	RG*	00 59 55.8739768772	-33 45 43.665124393	19.41	18.356		17.188	~	10	0
38	2MASS J00595660-3336417	RG*	00 59 56.6033028097	-33 36 41.785621224	18.64	17.434		16.231	~	7	0
39	GB07 Scl24	RR*	00 59 57.6069093624	-33 38 32.486453629	19.08	17.940		16.677	~	11	0
40	2MASS J00595826-3345507	RG*	00 59 58.2472608225	-33 45 50.680025618	19.01	17.723		16.367	~	12	0
41	2MASS J00595827-3341087	RG*	00 59 58.2618061098	-33 41 08.667881967	18.89	17.679		16.324	~	15	0
42	2MASS J00595831-3334406	RG*	00 59 58.3136651899	-33 34 40.468090655		17.983		16.7	~	7	0
43	2MASS J00595966-3339319	RG*	00 59 59.6483764242	-33 39 31.889968365	19.15	18.031		16.806	~	11	0
44	2MASS J01000050-3349355	RG*	01 00 00.5006906608	-33 49 35.622413545		17.512		16.397	~	7	0
45	GB07 Scl34	RG*	01 00 02.2287750920	-33 40 21.006047701		18.008		16.779	~	8	0
46	2MASS J01000268-3330253	RG*	01 00 02.6925537163	-33 30 25.305872094		18.017		16.69	~	7	0
47	2MASS J01000360-3339271	RG*	01 00 03.6011528547	-33 39 27.083875433		17.607		16.233	~	10	0
48	2MASS J01000419-3343324	RG*	01 00 04.1648181392	-33 43 32.439025859	19.12	18.068		16.916	~	9	0
49	GB07 Scl74	RR*	01 00 05.9359191213	-33 45 56.442530300	19.02	17.964		16.715	~	12	0
50	2MASS J01000697-3347095	RG*	01 00 06.9733484435	-33 47 09.509992719	18.99	17.942		16.596	~	11	0
51	2MASS J01000758-3337039	RG*	01 00 07.5807979448	-33 37 03.875286055	18.74	17.457		16.185	~	14	0
52	2MASS J01000919-3336094	RG*	01 00 09.1889481120	-33 36 09.408335424	19.07	17.924		16.657	~	11	0
53	NAME Sculptor Dwarf Galaxy	G	01 00 09.4	-33 42 32	9.79	8.6	8.81		~	1157	4
54	GB07 Scl36	RG*	01 00 10.3955700945	-33 41 04.749827913	19.27	18.086		16.852	~	10	0
55	2MASS J01001051-3349366	RG*	01 00 10.4927157893	-33 49 36.750937791	18.98	17.829		16.533	~	11	0
56	GB07 Scl67	RR*	01 00 11.7318455581	-33 44 50.369167235	18.84	17.809		16.58	~	9	0
57	2MASS J01001181-3342169	RG*	01 00 11.7997683110	-33 42 16.973405580	19.05	17.786		16.44	~	8	0
58	2MASS J01001255-3343011	RG*	01 00 12.5297795196	-33 43 01.361019186	19.23	18.125		16.897	~	15	0
59	2MASS J01001278-3341157	RG*	01 00 12.7788555195	-33 41 15.834372068	18.48	17.280		15.833	~	14	0
60	2MASS J01001397-3336391	RG*	01 00 13.9555290650	-33 36 39.214616493	19.05	17.847		16.521	~	10	0
61	2MASS J01001460-3347116	RG*	01 00 14.5774544543	-33 47 11.467517702	19.08	18.016		16.771	~	10	0
62	2MASS J01001483-3336498	RG*	01 00 14.8195713776	-33 36 49.887420906	19.11	17.965		16.709	~	10	0
63	2MASS J01001519-3343110	RG*	01 00 15.1843855536	-33 43 11.054162928	19.22	17.980		16.69	~	9	0
64	2MASS J01001537-3339060	RG*	01 00 15.3743756708	-33 39 06.075912241	18.73	17.287		15.840	~	11	0
65	2MASS J01001736-3343595	RG*	01 00 17.3663925132	-33 43 59.629699119	19.01	17.947		16.692	~	11	0
66	2MASS J01001759-3346552	RG*	01 00 17.6015698950	-33 46 55.079942216	19.08	18.038		16.821	~	11	0
67	2MASS J01001777-3335597	RG*	01 00 17.7719833262	-33 35 59.741711258	18.82	17.345		15.818	~	11	0
68	2MASS J01001830-3342122	RG*	01 00 18.2971209926	-33 42 12.275746482	18.86	17.518		16.139	~	17	0
69	2MASS J01001897-3345147	RG*	01 00 18.9670563370	-33 45 14.790315596	18.74	17.677		16.437	~	11	0
70	2MASS J01002030-3335345	RG*	01 00 20.2978881059	-33 35 34.537620278	18.66	17.495		16.295	~	8	0
71	2MASS J01002076-3347108	RG*	01 00 20.7586004314	-33 47 10.955887678	18.64	17.392		16.068	C	12	0
72	2MASS J01002109-3333464	RG*	01 00 21.0880042926	-33 33 46.434764118		18.082		16.821	~	10	0
73	2MASS J01002118-3346012	RG*	01 00 21.1695393626	-33 46 01.178757993	19.17	18.004		16.7	~	7	0
74	2MASS J01002234-3350239	RG*	01 00 22.3297966352	-33 50 23.891577634		17.714		16.39	~	6	0
75	2MASS J01002298-3343021	RG*	01 00 22.9819250900	-33 43 02.244950640	18.94	17.485		15.982	~	13	0
76	2MASS J01002384-3342173	RG*	01 00 23.8408373454	-33 42 17.456597664	18.64	17.333		15.830	~	14	0
77	2MASS J01002463-3344287	RG*	01 00 24.6295780776	-33 44 28.871146731	18.88	17.783		16.470	~	12	0
78	2MASS J01002504-3342275	RG*	01 00 25.0460765547	-33 42 28.220003972	19.27	18.149		16.96	~	8	0
79	2MASS J01002531-3350506	RG*	01 00 25.3040488612	-33 50 50.660945315		17.109		15.651	~	7	0
80	2MASS J01002629-3344456	RG*	01 00 26.2906990103	-33 44 45.684814960	19.16	18.039		16.83	~	7	0
81	2MASS J01003385-3344543	RG*	01 00 33.8624119154	-33 44 54.402917626	18.92	17.796		16.544	~	11	0
82	2MASS J01003404-3339046	RG*	01 00 34.0453633294	-33 39 04.631818676	19.05	17.200		15.499	~	12	0
83	2MASS J01003432-3349528	RG*	01 00 34.3300240681	-33 49 52.787040934		17.869		16.495	~	10	0
84	2MASS J01003813-3348168	RG*	01 00 38.1284527055	-33 48 16.894497874		17.212		15.730	~	10	0
85	2MASS J01004250-3344235	RG*	01 00 42.5022637693	-33 44 23.517963717	18.7	17.208		15.701	M	15	0
86	2MASS J01004427-3349188	RG*	01 00 44.2793764314	-33 49 18.836532534		17.478		16.006	~	11	0
87	2MASS J01005087-3345053	RG*	01 00 50.8766529690	-33 45 05.307859726		17.213		15.714	~	8	0

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