2016ApJ...833..167M

Query : 2016ApJ...833..167M

2016ApJ...833..167M - Astrophys. J., 833, 167-167 (2016/December-3)

The PAndAS view of the Andromeda satellite system. II. Detailed properties of 23 M31 dwarf spheroidal galaxies.

MARTIN N.F., IBATA R.A., LEWIS G.F., McCONNACHIE A., BABUL A., BATE N.F., BERNARD E., CHAPMAN S.C., COLLINS M.M.L., CONN A.R., CRNOJEVIC D., FARDAL M.A., FERGUSON A.M.N., IRWIN M., MACKEY A.D., McMONIGAL B., NAVARRO J.F. and RICH R.M.

Abstract (from CDS):

We present a comprehensive analysis of the structural properties and luminosities of the 23 dwarf spheroidal galaxies that fall within the footprint of the Pan-Andromeda Archaeological Survey (PAndAS). These dwarf galaxies represent the large majority of Andromeda's known satellite dwarf galaxies and cover a wide range in luminosity (-11.6\lesssimMV\lesssim-5.8 or 104.2\lesssimL\lesssim106.5 L☉) and surface brightness (25.1\lesssimµ0\lesssim29.3 mag arcsec–2). We confirm most previous measurements, but we find And XIX to be significantly larger than before (rh=3065–935+1065 pc, MV=-10.1–0.4+0.8) and cannot derive parameters for And XXVII as it is likely not a bound stellar system. We also significantly revise downward the luminosities of And XV and And XVI, which are now MV∼-7.5 or L∼105 L☉. Finally, we provide the first detailed analysis of Cas II/And XXX, a fairly faint system (MV=-8.0–0.3+0.4) of typical size (rh=270±50 pc), located in close proximity to the two bright elliptical dwarf galaxies NGC 147 and NGC 185. Combined with the set of homogeneous distances published in an earlier contribution, our analysis dutifully tracks all relevant sources of uncertainty in the determination of the properties of the dwarf galaxies from the PAndAS photometric catalog. We further publish the posterior probability distribution functions of all the parameters we fit for in the form of MCMC chains available online; these inputs should be used in any analysis that aims to remain truthful to the data and properly account for covariance between parameters.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

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

VizieR on-line data: <Available at CDS (J/ApJ/833/167): table1.dat table2.dat table3.dat>

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Andromeda XVIII G 00 02 14.5 +45 05 20     16.0     ~ 117 0
2 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 73 0
3 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 152 0
4 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 71 0
5 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 113 0
6 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 687 1
7 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 295 0
8 NAME Cassiopeia III G 00 35 59.4 +51 33 35           ~ 54 0
9 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 55 0
10 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 96 0
11 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 75 0
12 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 800 1
13 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1308 1
14 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2154 2
15 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12635 1
16 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 342 0
17 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 122 0
18 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 118 0
19 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 125 0
20 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 122 0
21 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 168 1
22 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 135 0
23 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 118 1
24 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 207 0
25 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 112 0
26 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 378 0
27 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 62 0
28 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 85 0
29 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 83 0
30 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5834 1
31 NAME Andromeda XXXIII G 03 01 23.6 +40 59 18           ~ 37 0
32 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4795 2
33 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 47 0
34 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 108 0
35 NAME Local Group GrG ~ ~           ~ 8385 0

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