2015ApJ...807...50B


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.14CEST09:18:29

2015ApJ...807...50B - Astrophys. J., 807, 50 (2015/July-1)

Eight new Milky Way companions discovered in first-year dark energy survey data.

BECHTOL K., DRLICA-WAGNER A., BALBINOT E., PIERES A., SIMON J.D., YANNY B., SANTIAGO B., WECHSLER R.H., FRIEMAN J., WALKER A.R., WILLIAMS P., ROZO E., RYKOFF E.S., QUEIROZ A., LUQUE E., BENOIT-LEVY A., TUCKER D., SEVILLA I., GRUENDL R.A., DA COSTA L.N., FAUSTI NETO A., MAIA M.A.G., ABBOTT T., ALLAM S., ARMSTRONG R., BAUER A.H., BERNSTEIN G.M., BERNSTEIN R.A., BERTIN E., BROOKS D., BUCKLEY-GEER E., BURKE D.L., CARNERO ROSELL A., CASTANDER F.J., COVARRUBIAS R., D'ANDREA C.B., DEPOY D.L., DESAI S., DIEHL H.T., EIFLER T.F., ESTRADA J., EVRARD A.E., FERNANDEZ E., FINLEY D.A., FLAUGHER B., GAZTANAGA E., GERDES D., GIRARDI L., GLADDERS M., GRUEN D., GUTIERREZ G., HAO J., HONSCHEID K., JAIN B., JAMES D., KENT S., KRON R., KUEHN K., KUROPATKIN N., LAHAV O., LI T.S., LIN H., MAKLER M., MARCH M., MARSHALL J., MARTINI P., MERRITT K.W., MILLER C., MIQUEL R., MOHR J., NEILSEN E., NICHOL R., NORD B., OGANDO R., PEOPLES J., PETRAVICK D., PLAZAS A.A., ROMER A.K., ROODMAN A., SAKO M., SANCHEZ E., SCARPINE V., SCHUBNELL M., SMITH R.C., SOARES-SANTOS M., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G., THALER J., THOMAS D., WESTER W., ZUNTZ J. (The DES Collaboration)

Abstract (from CDS):

We report the discovery of eight new Milky Way companions in of optical imaging data collected during the first year of the Dark Energy Survey (DES). Each system is identified as a statistically significant over-density of individual stars consistent with the expected isochrone and luminosity function of an old and metal-poor stellar population. The objects span a wide range of absolute magnitudes (MV from to), physical sizes (), and heliocentric distances (). Based on the low surface brightnesses, large physical sizes, and/or large Galactocentric distances of these objects, several are likely to be new ultra-faint satellite galaxies of the Milky Way and/or Magellanic Clouds. We introduce a likelihood-based algorithm to search for and characterize stellar over-densities, as well as identify stars with high satellite membership probabilities. We also present completeness estimates for detecting ultra-faint galaxies of varying luminosities, sizes, and heliocentric distances in the first-year DES data.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - Local Group

Nomenclature: Table 1: DES JHHMM.m+DDMM N=8.

Simbad objects: 49

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Number of rows : 49

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10559 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9080 1
3 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 431 2
4 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 168 0
5 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 32 0
6 NAME Hor I G 02 55 31.7 -54 07 08           ~ 62 0
7 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5368 1
8 NGC 1261 GlC 03 12 16.21 -55 12 58.4   9.79 8.63     ~ 401 0
9 NGC 1269 GiG 03 17 18.600 -41 06 29.05 9.85 9.83 8.81 8.72   ~ 362 1
10 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 147 0
11 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 73 0
12 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 171 0
13 NGC 1553 GiP 04 16 10.4711638537 -55 46 48.107262747 10.76 10.10 9.40 8.74   ~ 346 2
14 NAME Pic I G 04 43 47.4 -50 16 59           ~ 28 0
15 NGC 1851 GlC 05 14 06.76 -40 02 47.6   8.80 7.23     ~ 1206 0
16 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14312 1
17 ESO 121-3 Cl* 06 02 02.0 -60 31 20   14.91 14.04     ~ 104 0
18 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 55 1
19 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 289 0
20 NAME Leo T dSph G 09 34 53.4 +17 03 05     15.1     ~ 296 0
21 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 280 1
22 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 329 1
23 NAME Dwarf Elliptical Galaxy in Sex G 10 13 02.9 -01 36 53   12 10.4     ~ 667 0
24 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 251 1
25 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 237 0
26 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 305 1
27 NAME Leo V G 11 31 09.60 +02 13 12.0     16.0     ~ 149 0
28 NAME Leo IV Dwarf Galaxy G 11 32 57.0 -00 32 00     15.1     ~ 292 1
29 NAME Crater Cluster GlC 11 36 16.20 -10 52 38.8           ~ 49 1
30 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 54 0
31 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 368 1
32 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 194 2
33 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 229 1
34 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 61 1
35 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 175 0
36 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 310 0
37 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 310 0
38 NAME Her Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 251 1
39 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 31 0
40 NAME Segue 3 Cl* 21 21 31.0 +19 07 02           ~ 48 0
41 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 857 1
42 NAME Balbinot 1 Cl* 22 10 42.819 +14 56 49.03           ~ 19 0
43 NAME Kim 1 Cl* 22 11 41.30 +07 01 31.8           ~ 20 0
44 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 57 0
45 NAME Grus I G 22 56 42.4 -50 09 48           ~ 35 0
46 NGC 7424 GiG 22 57 18.3921716643 -41 04 14.121758456   10.88 10.38 10.02 10.9 ~ 188 0
47 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 201 0
48 NAME Phe II G 23 39 59.4 -54 24 22           ~ 30 0
49 NAME Local Group GrG ~ ~           ~ 6650 0

    Equat.    Gal    SGal    Ecl

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2019.10.14-09:18:29

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