2021MNRAS.501.2608B

Query : 2021MNRAS.501.2608B

2021MNRAS.501.2608B - Mon. Not. R. Astron. Soc., 501, 2608-2626 (2021/February-3)

The Ursa Major association of galaxies - VI: a relative dearth of gas-rich dwarf galaxies.

BUSEKOOL E., VERHEIJEN M.A.W., VAN DER HULST J.M., TULLY R.B., TRENTHAM N. and ZWAAN M.A.

Abstract (from CDS):

We determined the H I mass function of galaxies in the Ursa Major association of galaxies using a blind Very Large Array (VLA) D-array survey, consisting of 54 pointings in a cross-pattern, covering the centre as well as the outskirts of the Ursa Major volume. The calculated H I mass function has best-fitting Schechter parameters θ* = 0.19 ± 0.11 Mpc–3, log M* HI M☉ = 9.8 ±0.8, and α = -0.92 ± 0.16. The high-mass end is determined by a complementary, targeted Westerbork Synthesis Radio Telescope (WSRT) survey, and the low-mass end is determined by the blind VLA survey. The slope is significantly shallower than the slopes of the H I Parkes All Sky Survey (α = -1.37 ± 0.03 ± 0.05) and Arecibo Legacy Fast Arecibo L-band Feed Array (α = -1.33 ± 0.02) H I mass functions, which are measured over much larger volumes and cover a wider range of cosmic environments: There is a relative lack of low-H I mass galaxies in the Ursa Major region. This difference in the slope strongly hints at an environmental dependence of the H I mass function slope.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: clusters: individual: Ursa Major - galaxies: dwarf

Nomenclature: Figs A1-A2, Table 4: [BVV2021] UMa-HINN (Nos HI01-HI17).

Simbad objects: 53

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Number of rows : 53
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 M 96 Group GrG 10 46 45 +11 49.1           ~ 330 0
2 NAME UMa Region reg 11 00 +50.0           ~ 333 0
3 NGC 3726 G 11 33 21.1367545656 +47 01 45.280222428   11.11   10.02   ~ 374 0
4 NGC 3769 GiP 11 37 44.0727836208 +47 53 34.782808956   11.7       ~ 195 0
5 NGC 3850 GiC 11 45 35.6792908103 +55 53 12.850289447   14.4       ~ 78 0
6 SDSS J114547.46+562642.8 G 11 45 47.46624 +56 26 42.8568           ~ 1 0
7 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 347 0
8 LEDA 2515483 GiC 11 46 34.074 +55 49 16.98           ~ 15 0
9 SDSS J114649.67+480530.5 G 11 46 49.67976 +48 05 30.5808           ~ 1 0
10 LEDA 4001427 AG? 11 48 20.163 +56 20 45.86           ~ 6 0
11 NGC 3898 LIN 11 49 15.370 +56 05 03.66   11.7       ~ 329 1
12 NGC 3906 AG? 11 49 40.496 +48 25 33.46   14.1       ~ 103 0
13 NGC 3913 AG? 11 50 38.9407040280 +55 21 13.894641396   14.2       ~ 169 0
14 Mrk 1460 EmG 11 50 50.1094537992 +48 15 04.844817792   17.0       ~ 32 0
15 LEDA 3546221 AG? 11 50 59.605 +47 57 49.50           ~ 8 0
16 LEDA 2431790 GiC 11 51 53.666 +53 05 58.23           ~ 11 0
17 Z 269-12 GiP 11 52 07.07728 +52 06 28.5595   15.6       ~ 63 0
18 [TTV2001] 23 GiC 11 53 11.13816 +48 11 18.5460           ~ 2 0
19 NGC 3949 GiC 11 53 41.7311041896 +47 51 31.401451476   10.9       ~ 351 1
20 NGC 3953 GiG 11 53 49.0086582552 +52 19 36.475395312   11.08   9.71   ~ 380 0
21 SDSS J115616.24+511706.9 G 11 56 16.24584 +51 17 06.9864           ~ 2 0
22 Z 269-18 GiG 11 56 28.76784 +50 25 42.0132   14.0       ~ 148 0
23 NGC 3985 GiG 11 56 42.1288367760 +48 20 03.129462132   13.0       ~ 122 0
24 Z 269-21 AG? 11 56 52.142 +50 49 01.16   15.4       ~ 63 0
25 Z 243-32 EmG 11 57 17.3777198280 +49 17 00.669514488   14.2       ~ 140 0
26 NGC 3998 Sy2 11 57 56.1334044408 +55 27 12.922443432   11.64 12.10 10.09   ~ 682 2
27 MCG+08-22-048 GiC 11 58 11.556 +48 52 49.79   16       ~ 15 0
28 SDSS J115825.88+485737.1 HI 11 58 25.88088 +48 57 37.1664           ~ 1 0
29 MCG+09-20-050 AG? 11 58 25.96 +50 55 03.4   17       ~ 67 0
30 NGC 4010 G 11 58 37.991 +47 15 40.72   13.1       ~ 164 0
31 NGC 4026 GiP 11 59 25.0914676128 +50 57 41.951225700   12.17       ~ 290 0
32 MCG+08-22-051 GiC 11 59 57.6822171528 +49 33 49.859931492   16       ~ 18 0
33 UGCA 262 GiC 12 00 35.422 +47 46 26.14   16.5       ~ 11 0
34 MCG+08-22-057 GiC 12 02 43.7191356096 +45 11 27.808631088   16.0       ~ 14 0
35 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
36 SDSS J120550.87+425509.9 G 12 05 50.87088 +42 55 09.9696           ~ 1 0
37 Z 215-23 GiP 12 05 57.746 +43 08 36.08   14.40       ~ 123 1
38 Z 215-25 LSB 12 06 10.774 +42 57 20.85   15.6       ~ 66 0
39 [BVV2021] UMa-HI14 HI 12 07 03.1 +42 42 50           ~ 1 0
40 NGC 4111 LIN 12 07 03.1334091672 +43 03 56.345868252 12.07 11.63 10.74     ~ 350 1
41 NGC 4117 Sy2 12 07 46.1195809200 +43 07 34.818483864   14.04       ~ 178 1
42 LEDA 4001907 AG? 12 07 51.592 +41 33 47.17           ~ 8 0
43 NGC 4118 EmG 12 07 52.844 +43 06 40.26   15.7       ~ 26 0
44 LEDA 2180558 AG? 12 08 24.522 +41 24 04.89           ~ 11 0
45 Z 215-33 EmG 12 08 55.0537236360 +41 44 27.144544812   14.3       ~ 82 0
46 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 436 1
47 NGC 4143 LIN 12 09 36.0679174440 +42 32 03.031963368   13.04 12.08     ~ 251 0
48 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
49 NAME Local Supercluster SCG 12 31 +12.4           ~ 566 0
50 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 149 0
51 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
52 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 424 1
53 NAME Local Group GrG ~ ~           ~ 9325 0

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