2019MNRAS.487.1380G

Query : 2019MNRAS.487.1380G

2019MNRAS.487.1380G - Mon. Not. R. Astron. Soc., 487, 1380-1399 (2019/July-3)

The Local Group on FIRE: dwarf galaxy populations across a suite of hydrodynamic simulations.

GARRISON-KIMMEL S., HOPKINS P.F., WETZEL A., BULLOCK J.S., BOYLAN-KOLCHIN M., KERES D., FAUCHER-GIGUERE C.-A., EL-BADRY K., LAMBERTS A., QUATAERT E. and SANDERSON R.

Abstract (from CDS):

We present a new set of high-resolution hydrodynamic cosmological zoom-in simulations that apply the Feedback In Realistic Environments physics to both Local Group (LG)-like and isolated Milky Way (MW)-like volumes (10 host systems in total with a baryonic particle mass ≃3500¡-¡7000 M_☉). We study the stellar mass functions, circular velocity or mass profiles, and velocity dispersions of the dwarf galaxy populations. The simulations reproduce the stellar mass function and central densities of MW satellite dwarfs for M*≥_105.5 M_☉and predict the existence of ∼3 unidentified galaxies with M*∼_10^5 M^_☉within 300 kpc of the MW. Overall, we find no evidence for the classical missing satellites or too-big-to-fail (TBTF) problems for satellite galaxies in our sample. Among the satellites, TBTF is resolved primarily by subhalo disruption and overall mass-loss; central density profiles of subhaloes are of secondary importance. For non-satellite galaxies, our LG-like simulations predict as many as ∼10 as-of-yet unseen galaxies at distances 0.3¡-¡1 Mpc from both hosts, with M*≃_105–6 M_☉(in haloes with Vmax ∼ 20 km s–1), albeit with large halo-to-halo variance. None of our simulations produces a compact, baryon-dominated, high-density dwarf elliptical-type galaxy (with Vcirc >= 35 km s–1 at r< 1 kpc), of which six may appear in the LG (but none in the MW). It may therefore remain a challenge to reproduce the full diversity of the dwarf population, including both the highest and lowest density systems.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: formation - galaxies: Local Group - cosmology: theory

Simbad objects: 59

goto Full paper

goto View the references in ADS

Number of rows : 59
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NAME Andromeda XVIII G 00 02 14.5 +45 05 20     16.0     ~ 129 0
3 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
4 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
5 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 76 0
6 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
7 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
8 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
9 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
10 NAME Cassiopeia III G 00 35 59.4 +51 33 35           ~ 59 0
11 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 59 0
12 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
13 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 82 0
14 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
15 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
16 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
17 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
18 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
19 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
20 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
21 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
22 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
23 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
24 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
25 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
26 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
27 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
28 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
29 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
30 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
31 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
32 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
33 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
34 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
35 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
36 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
37 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
38 NAME Andromeda XXXIII G 03 01 23.6 +40 59 18           ~ 43 0
39 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
40 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
41 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
42 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
43 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
44 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
45 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
46 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
47 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
48 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
49 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
50 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
51 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
52 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
53 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 53 0
54 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
55 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
56 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
57 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
58 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
59 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 2019MNRAS.487.1380G and select 'bookmark this link' or equivalent in the popup menu