CDS

2020A&A...643A.124K

Query : 2020A&A...643A.124K

2020A&A...643A.124K - Astronomy and Astrophysics, volume 643A, 124-124 (2020/11-1)

Distance and mass of the M 104 (Sombrero) group.

KARACHENTSEV I.D., MAKAROVA L.N., TULLY R.B., ANAND G.S., RIZZI L. and SHAYA E.J.

Abstract (from CDS):


Aims. Distances and radial velocities of galaxies in the vicinity of the luminous early-type galaxy M 104 (Sombrero) are used to derive its dark matter mass.
Methods. Two dwarf galaxies: UGCA 307 and KKSG 30 situated near M 104 were observed with the Advanced Camera for Surveys on the Hubble Space Telescope. The distances 9.03–0.51+0.84Mpc (UGCA 307) and 9.72–0.41+0.44Mpc (KKSG 30) were determined using the tip of the red giant branch method. These distances are consistent with the dwarf galaxies being satellites of Sombrero.
Results. Using radial velocities and projected separations of UGCA 307, KKSG 30, and a third galaxy with an accurate distance (KKSG 29), as well as 12 other assumed companions with less accurate distances, the total mass of M 104 is estimated to be (1.55±0.49)x1013M☉. At the K-band luminosity of the Sombrero galaxy of 2.4x1011L☉, its total mass-to-luminosity ratio is MT/LK=(65±20)M☉/L☉, which is about three times higher than that of luminous bulgeless galaxies.

Abstract Copyright: © ESO 2020

Journal keyword(s): galaxies: dwarf - galaxies: distances and redshifts - galaxies: photometry - galaxies: individual: M 104 - galaxies: individual: UGCA 307 - galaxies: individual: KKSG 30

Simbad objects: 56

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Number of rows : 56
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12387 1
2 MCG-02-31-026 G 12 16 28.7 -11 31 42   15.0   15.0 14.7 ~ 24 0
3 UGCA 277 EmG 12 17 11.9 -11 40 41   15.6   15.7 15.6 ~ 14 0
4 LEDA 104765 G 12 21 43.87 -12 39 56.5           ~ 6 0
5 LEDA 3097706 EmG 12 22 05.7 -09 48 01   16.7   16.6 16.2 ~ 10 0
6 UGCA 278 EmG 12 23 10.3 -13 56 45   15.3   15.2 15.3 ~ 14 0
7 6dFGS gJ122549.4-110305 AGN 12 25 49.3 -11 03 06   16.68   15.88   ~ 9 0
8 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6509 0
9 6dFGS gJ123001.8-114731 G 12 30 01.7595980736 -11 47 31.080551064   16.20   15.15   ~ 6 0
10 NAME LOCAL SUPERCL SCG 12 31 +12.4           ~ 504 0
11 NGC 4487 GiG 12 31 04.4731449720 -08 03 14.548820040   11.7   11.9 11.6 ~ 171 0
12 NGC 4504 GiG 12 32 17.4213303288 -07 33 48.904197084   12.1   11.31 12.3 ~ 123 0
13 UGCA 287 G 12 33 55.2 -10 40 47   15       ~ 19 0
14 UGCA 289 GiG 12 35 37.0 -07 52 41   13.3   13.3 13.0 ~ 41 0
15 6dFGS gJ123539.4-110402 G 12 35 39.36 -11 04 01.6   15.75   14.98   ~ 8 0
16 LEDA 42120 LSB 12 37 14.0 -10 29 51           ~ 16 0
17 LEDA 3097708 G 12 37 35.8 -08 52 02   17.3       ~ 13 0
18 LEDA 3097709 G 12 38 33.7 -10 29 25           ~ 12 0
19 [JMK2016] NGC 4594-DGSAT-3 LSB 12 39 32.80 -11 13 38.5           ~ 3 0
20 LEDA 1024576 G 12 39 44.7 -07 05 18           ~ 8 0
21 LEDA 3097710 G 12 39 54.3 -11 45 03           ~ 12 0
22 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1379 3
23 NAME Sombrero UCD 1 G 12 40 03.1428796848 -11 40 04.430325936   18.0 17.46 16.5   ~ 21 1
24 LEDA 3097711 G 12 40 08.9 -12 21 53           ~ 13 0
25 NGC 4597 GiP 12 40 12.931 -05 47 57.44   12.3   11.9 12.2 ~ 85 0
26 LEDA 3097712 G 12 41 18.8 -11 55 39           ~ 12 0
27 MCG-02-32-026 G 12 42 48.9159309240 -12 23 26.755892340   15   13.30   ~ 15 0
28 UGCA 295 G 12 44 53.924 -09 07 33.41   14.4   14.2 14.5 ~ 21 0
29 MCG-01-33-003 GiG 12 45 41.3496635640 -06 04 10.835842548   12.7   12.8 12.6 ~ 48 0
30 NGC 4674 GiG 12 46 03.472 -08 39 19.66   15   12.78   ~ 27 0
31 2MASX J12475094-0828163 G 12 47 50.9375728800 -08 28 16.849688700   15.51   14.39   ~ 5 0
32 2MASX J12485413-1140424 GiG 12 48 54.137 -11 40 42.49   15.04   14.20   ~ 14 0
33 NGC 4700 AGN 12 49 08.148 -11 24 35.48   12.7 14.32 12.7 12.5 ~ 95 0
34 MCG-02-33-015 LSB 12 49 23.2 -10 07 08   12.3   12.5 12.4 ~ 44 0
35 6dFGS gJ124955.9-072527 G 12 49 55.9 -07 25 27   15.42   14.69   ~ 6 0
36 NGC 4731 GiP 12 51 01.095 -06 23 34.98   12.0   16.23 12.0 ~ 168 0
37 NGC 4723 G 12 51 02.9 -13 14 14   14.6   14.8 15.0 ~ 26 0
38 MCG-01-33-027 GiP 12 51 13.1 -06 33 35   14.5       ~ 25 0
39 NGC 4742 GiG 12 51 48.0416784480 -10 27 17.196625800   12   11.55   ~ 222 1
40 NGC 4757 GiG 12 52 50.1123513360 -10 18 36.312397272   15   13.78   ~ 21 0
41 UGCA 307 GiG 12 53 56.8 -12 06 15   14.0   14.2 14.1 ~ 51 0
42 NGC 4781 GiG 12 54 23.7751070304 -10 32 13.803431280   11.8   11.28 11.7 ~ 140 0
43 NGC 4790 GiG 12 54 51.9413201400 -10 14 52.268425260   12   12.12   ~ 84 0
44 UGCA 308 G 12 55 31.0 -10 23 53   17       ~ 9 0
45 NGC 4804 GiG 12 55 49.6669627200 -12 03 18.748939464   12   14.74   ~ 51 0
46 IC 3908 EmG 12 56 40.624 -07 33 46.08   13.5   12.19 12.6 ~ 86 0
47 NGC 4818 SBG 12 56 48.907 -08 31 31.08   11   10.88   ~ 147 0
48 UGCA 311 GiG 12 57 46.827 -09 38 01.60   13.6   13.6 13.2 ~ 57 0
49 MCG-02-33-075 EmG 12 58 28.268 -10 34 37.19   13.9   13.14 13.6 ~ 25 0
50 UGCA 312 G 12 59 06.8 -12 13 40   15.0   15.1 15.1 ~ 19 0
51 NGC 4856 GiG 12 59 21.2433153888 -15 02 31.292291292   11   10.72   ~ 81 0
52 UGCA 314 GiG 13 00 17.2 -12 20 48   13.7   13.31 13.7 ~ 31 0
53 LEDA 936912 G 13 01 07.1 -13 31 04   15.7   15.5 15.3 ~ 11 0
54 NGC 4920 GiG 13 02 04.2 -11 22 43   14.0   14.0 13.7 ~ 30 0
55 NAME Local Group GrG ~ ~           ~ 8155 0
56 NAME Virgo Extension GrG ~ ~           ~ 51 0

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2023.09.30-07:11:20

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