2020ApJ...893...47D

Query : 2020ApJ...893...47D

2020ApJ...893...47D - Astrophys. J., 893, 47-47 (2020/April-2)

Milky Way satellite census. I. The observational selection function for Milky Way satellites in DES y3 and Pan-STARRS DR1.

DRLICA-WAGNER A., BECHTOL K., MAU S., McNANNA M., NADLER E.O., PACE A.B., LI T.S., PIERES A., ROZO E., SIMON J.D., WALKER A.R., WECHSLER R.H., ABBOTT T.M.C., ALLAM S., ANNIS J., BERTIN E., BROOKS D., BURKE D.L., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., COSTANZI M., DA COSTA L.N., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., EIFLER T.F., EVERETT S., FLAUGHER B., FRIEMAN J., GARCIA-BELLIDO J., GAZTANAGA E., GRUEN D., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HONSCHEID K., JAMES D.J., KRAUSE E., KUEHN K., KUROPATKIN N., LAHAV O., MAIA M.A.G., MARSHALL J.L., MELCHIOR P., MENANTEAU F., MIQUEL R., PALMESE A., PLAZAS A.A., SANCHEZ E., SCARPINE V., SCHUBNELL M., SERRANO S., SEVILLA-NOARBE I., SMITH M., SUCHYTA E., TARLE G. (The DES Collaboration)

Abstract (from CDS):

We report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1 provide multi-band photometry in optical/near-infrared wavelengths over ∼80% of the sky. Our search for satellite galaxies targets ∼25,000 deg2 of the high-Galactic-latitude sky reaching a 10σ point-source depth of >=22.5 mag in the g and r bands. While satellite galaxy searches have been performed independently on DES and PS1 before, this is the first time that a self-consistent search is performed across both data sets. We do not detect any new high-significance satellite galaxy candidates, recovering the majority of satellites previously detected in surveys of comparable depth. We characterize the sensitivity of our search using a large set of simulated satellites injected into the survey data. We use these simulations to derive both analytic and machine-learning models that accurately predict the detectability of Milky Way satellites as a function of their distance, size, luminosity, and location on the sky. To demonstrate the utility of this observational selection function, we calculate the luminosity function of Milky Way satellite galaxies, assuming that the known population of satellite galaxies is representative of the underlying distribution. We provide access to our observational selection function to facilitate comparisons with cosmological models of galaxy formation and evolution.

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

Journal keyword(s): Dwarf spheroidal galaxies - Local Group - Dark matter - Milky Way Galaxy

VizieR on-line data: <Available at CDS (J/ApJ/893/47): table2.dat table3.dat table4.dat>

Simbad objects: 67

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Number of rows : 67
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 Tuc IV G 00 02.9 -60 51           ~ 90 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
5 NAME Cetus II G 01 17.9 -17 25           ~ 56 0
6 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
7 BD+18 240 * 01 52 47.7548045376 +19 22 23.687355972   10.20 9.12     K0 3 0
8 NAME Cetus III Dwarf Galaxy LSB 02 05 19.40 -04 16 12.0           ~ 32 0
9 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
10 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
11 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
12 [LPS2017] DES J0225+0304 G? 02 25 42.40 +03 04 10.1           ~ 23 0
13 NAME Hydrus I G 02 29 33.4 -79 18 32           ~ 80 0
14 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
15 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
16 NAME Horologium II G 03 16 32.1 -50 01 05           ~ 76 0
17 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
18 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
19 NAME Reticulum III G 03 45.4 -60 27           ~ 67 0
20 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
21 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
22 NAME Col I G 05 31.4 -28 02           ~ 60 0
23 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
24 NAME Pic II G 06 44 43 -59 53.8           ~ 33 0
25 NAME Carina II Dwarf Galaxy G 07 36 25.6 -57 59 57           ~ 86 0
26 NAME Car III Dwarf Galaxy G 07 38 31.2 -57 53 59           ~ 81 0
27 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
28 NAME Antlia II Dwarf Galaxy G 09 35 32.8 -36 46 02           ~ 109 0
29 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
30 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
31 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
32 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
33 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
34 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
35 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
36 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
37 NAME Crater Cluster GlC 11 36 16.20 -10 52 38.8           ~ 117 1
38 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
39 NAME Vir I Dwarf Galaxy LSB 12 00 09.6 -00 40 48           ~ 40 0
40 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
41 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
42 NAME Centaurus I G 12 38 20 -40 54.1     14.78     ~ 29 0
43 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
44 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
45 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 115 1
46 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
47 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
48 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
49 NAME Bootes IV LSB 15 34 45 +43 43.6           ~ 24 0
50 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
51 DELVE 1 Cl* 16 30 54 -00 58.3     16.19     ~ 19 0
52 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
53 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
54 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
55 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
56 NAME Ind II G 20 38.9 -46 10           ~ 31 0
57 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
58 NAME Gru II G 22 04.1 -46 26           ~ 110 0
59 NAME Pegasus III LSB 22 24 22.6 +05 25 12           ~ 69 0
60 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
61 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
62 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
63 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
64 NAME Tuc V G 23 37.4 -63 16           ~ 84 0
65 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
66 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
67 NAME Local Group GrG ~ ~           ~ 9325 0

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