2022AJ....163..234K

Query : 2022AJ....163..234K

2022AJ....163..234K - Astron. J., 163, 234-234 (2022/May-0)

Around the Spindle Galaxy: The Dark Halo Mass of NGC 3115.

KARACHENTSEV I.D., MAKAROVA L.N., ANAND G.S. and TULLY R.B.

Abstract (from CDS):

We report observations of five dwarf galaxies in the vicinity of the luminous S0 galaxy NGC 3115 performed with the Advanced Camera for Surveys on the Hubble Space Telescope. Their distances determined via the Tip of the Red Giant Branch are: 10.05 Mpc (UGCA 193), 9.95 Mpc (KKSG 17), 10.13 Mpc (2MASX-J0957-0915), 10.42 Mpc (2dFGRS-TGN218Z179), and 11.01 Mpc (KKSG 19). With their typical distance error of about 0.75 Mpc all the five dwarfs are consistent to be true satellites of the host galaxy NGC 3115 (10.2 ± 0.2 Mpc). Using the DESI Legacy Imaging Surveys we also found five new probable dwarf satellites of NGC 3115, as well as four new probable members of the neighboring group around NGC 3521 situated 3 Mpc away from the NGC 3115 group. Based on the radial velocities and projected separations of 10 dwarf companions, we derived the total (orbital) mass of NGC 3115 to be (4.89 ± 1.48) 1012M☉. The ratio of the total mass-to-K luminosity of NGC 3115 is (50 ± 15) M☉/L☉, which is typical for the early-type luminous galaxies.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxies - Dwarf galaxies - Galaxy distances - Distance measure

Simbad objects: 49

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Number of rows : 49
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 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
2 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
4 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
5 NGC 1269 EmG 03 17 18.5785534752 -41 06 28.628735184 9.85 9.83 8.81 8.72   ~ 445 1
6 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 475 1
7 ESO 497-4 EmG 09 03 03.17 -23 48 30.7   16.43 14.31 15.59 15.5 ~ 24 0
8 MCG-04-22-003 AG? 09 09 46.54 -23 00 33.0   15.64 14.44 14.74 13.76 ~ 40 0
9 NGC 2784 EmG 09 12 19.497 -24 10 21.36 12.02 10.99 10.16 9.30   ~ 144 1
10 ESO 497-35 AG? 09 16 58.0783 -23 16 49.733   15.83 14.41 15.29 14.08 ~ 22 0
11 NGC 2835 EmG 09 17 52.8523921416 -22 21 16.839119700   11.03   10.32 10.9 ~ 285 0
12 MCG-04-22-009 AG? 09 21 27.7213 -22 30 00.894   14.87   13.87 15.6 ~ 46 0
13 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
14 LEDA 4078844 EmG 09 35 21.56 -13 48 52.3   16.43   15.77   ~ 13 0
15 LEDA 1034827 G 09 55 10.9 -06 16 14   15.14       ~ 16 0
16 LEDA 4078671 AG? 09 56 37.57 -09 29 10.8   15.89   14.87   ~ 18 0
17 LEDA 154449 EmG 09 57 08.877 -09 15 48.73   15.81   14.78   ~ 10 0
18 LEDA 3097699 G 09 59 46.5 -09 21 04           ~ 11 0
19 MCG-01-26-009 EmG 10 01 33.63 -06 31 30.4   15.5   15.4 15.3 ~ 21 0
20 MCG-01-26-011 AG? 10 01 38.37 -08 14 55.6   15.5       ~ 27 0
21 MCG-01-26-012 GiG 10 02 36.00 -06 00 49.0 15.70 15.16 14.74 14.55 14.3 ~ 82 0
22 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
23 UGCA 200 AG? 10 05 35.10 -07 45 00.0   17       ~ 36 1
24 NGC 3115B GiG 10 05 41.5916660712 -07 58 53.587291224   14.32 13.45     ~ 96 1
25 LEDA 1099440 AG? 10 09 32.4720888624 -02 10 57.743522040   15.942   15.232   ~ 10 0
26 LEDA 1178576 AG? 10 21 38.844 +00 54 00.57   17.333   16.872   ~ 19 0
27 LEDA 3097700 AG? 10 24 29.0997 -12 25 54.508   17.9       ~ 18 0
28 Z 9-95 EmG 10 39 25.193 +01 43 09.08 15.68 15.07 14.59 14.37 14.4 ~ 58 0
29 NAME Antlia SNR SNR 10 44 -37.2           ~ 33 1
30 NAME M 96 Group GrG 10 46 45 +11 49.1           ~ 330 0
31 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
32 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 617 1
33 NGC 3489 GiG 11 00 18.5483994744 +13 54 04.206202668 11.46 11.12 10.29     ~ 429 1
34 2dFGRS TGN368Z258 LSB 11 04 40.082 +00 03 29.62   16.9       ~ 24 0
35 UGC 6145 LSB 11 05 34.70376 -01 51 51.4584   16.548   16.085   ~ 47 0
36 [KMK2013] NGC3521sat G 11 05 40.7 +00 07 15           ~ 5 0
37 NGC 3521 EmG 11 05 48.5680991376 -00 02 09.245076540 10.06 9.83 9.02 10.1 9.6 ~ 879 2
38 LEDA 3097701 G 11 06 07.8 -01 26 50           ~ 10 0
39 SDSS J111029.55+003700.8 LSB 11 10 29.55696 +00 37 00.8400   18.2   16.583   ~ 2 0
40 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
41 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
42 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
43 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
44 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
45 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
46 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
47 NAME Leo Spur reg ~ ~           ~ 36 0
48 NAME NGC 3115 Group GrG ~ ~           ~ 12 0
49 NAME Local Group GrG ~ ~           ~ 9325 0

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