2008AJ....135.1361D

Query : 2008AJ....135.1361D

2008AJ....135.1361D - Astron. J., 135, 1361-1383 (2008/April-0)

Numerical color-magnitude diagram analysis of Sloan Digital Sky Survey data and application to the new Milky way satellites.

DE JONG J.T.A., RIX H.-W., MARTIN N.F., ZUCKER D.B., DOLPHIN A.E., BELL E.F., BELOKUROV V. and EVANS N.W.

Abstract (from CDS):

We have tested the application to Sloan Digital Sky Survey (SDSS) data of the software package MATCH, which fits color-magnitude diagrams (CMDs) to estimate stellar population parameters and distances. These tests on a set of six globular clusters show that these techniques recover their known properties. New ways of using the CMD-fitting software enable us to deal with an extended distribution of stars along the line-of-sight, to constrain the overall properties of sparsely populated objects, and to detect the presence of stellar overdensities in wide-area surveys. We then also apply MATCH to CMDs for 12 recently discovered Milky Way satellites to derive in a uniform fashion their distances, ages, and metallicities. While the majority of them appear consistent with a single stellar population, CVn I, UMa II, and Leo T exhibit (from SDSS data alone) a more complex history with multiple epochs of star formation.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: stellar content - methods: numerical - methods: statistical - surveys

Simbad objects: 22

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Number of rows : 22
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 Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
2 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
3 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 85 1
4 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
5 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
6 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
7 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
8 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
9 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
10 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 81 0
11 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
12 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
13 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
14 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
15 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
16 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 399 0
17 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
18 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
19 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
20 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
21 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
22 NAME Local Group GrG ~ ~           ~ 9325 0

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