2008A&A...477..139L

Query : 2008A&A...477..139L

2008A&A...477..139L - Astronomy and Astrophysics, volume 477, 139-145 (2008/1-1)

Candidate Milky Way satellites in the Galactic halo.

LIU C., HU J., NEWBERG H. and ZHAO Y.

Abstract (from CDS):

Sloan Digital Sky Survey (SDSS) DR5 photometric data with 120°<α<270°, 25°<δ<70° were searched for new Milky Way companions or substructures in the Galactic halo. Five candidates are identified as overdense faint stellar sources that have color-magnitude diagrams similar to those of known globular clusters, or dwarf spheroidal galaxies. The distance to each candidate is estimated by fitting suitable stellar isochrones to the color-magnitude diagrams. Geometric properties and absolute magnitudes are roughly measured and used to determine whether the candidates are likely dwarf spheroidal galaxies, stellar clusters, or tidal debris. SDSSJ1000+5730 and SDSSJ1329+2841 are probably faint dwarf galaxy candidates while SDSSJ0814+5105, SDSSJ0821+5608, and SDSSJ1058+2843 are very likely extremely faint globular clusters. Follow-up study is needed to confirm these candidates.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: structure - Galaxy: halo - galaxies: dwarf - Local Group

Nomenclature: Table 2: [LHN2008] SDSSJHHMM+DDMM N=5.

CDS comments: The five overdensity studied are not SDSS sources in the SDSS DR5.

Simbad objects: 23

Full paper

View the references in ADS

Number of rows : 23

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2022	#notes
1	NAME SDSS J0814+5105	Gl?	08 14.0	+51 05					~	2	0
2	NAME SDSS J0821+5608	Gl?	08 21.0	+56 08					~	2	0
3	NAME UMa II Galaxy	G	08 51 30.0	+63 07 48			13.3		~	342	0
4	NAME Leo A	G	09 59 26.46	+30 44 47.0	14.08	13.54	13.26	13.33	~	583	0
5	NAME SDSS J1000+5730 Dwarf G	G	10 00.0	+57 30					~	4	0
6	NAME Segue 1	G	10 07 03.2	+16 04 25			15.3		~	406	1
7	NAME UMa I Galaxy	G	10 34 52.80	+51 55 12.0			14.4		~	296	1
8	NAME SDSS J1058+2843	Gl?	10 58.0	+28 43					~	6	0
9	GCl 17	GlC	11 29 16.80	+28 58 25.0		14.4			~	335	1
10	NAME Leo IV Dwarf Galaxy	G	11 32 57.0	-00 32 00			15.1		~	355	1
11	NAME CVn II dSph	G	12 57 09.6	+34 19 12			16.1		~	236	2
12	NAME CVn I dSph	G	13 28 03.5	+33 33 21			13.1		~	294	1
13	NAME SDSS J1329+2841 Dwarf G	G	13 29 13.0	+28 41 27					~	4	0
14	M 3	GlC	13 42 11.62	+28 22 38.2			6.39		~	2384	0
15	C 1353-269	GlC	13 56 21.702	-27 10 03.00					~	119	0
16	NGC 5466	GlC	14 05 27.29	+28 32 04.0		10.5	9.70		~	785	0
17	NAME Serpens Dwarf	GlC	15 16 05.30	-00 06 41.0		15.1			~	691	1
18	NAME Hercules Dwarf Galaxy	G	16 31 02.0	+12 47 30			14.0		~	308	1
19	M 13	GlC	16 41 41.634	+36 27 40.75			5.8		~	2115	0
20	M 92	GlC	17 17 07.39	+43 08 09.4			6.52		~	2008	0
21	NAME Local Group	GrG	~	~					~	7772	0
22	NAME Orphan Stream	St*	~	~					~	226	0
23	NAME Monoceros Stream	St*	~	~					~	339	0

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