2020MNRAS.497.2276P

Query : 2020MNRAS.497.2276P

2020MNRAS.497.2276P - Mon. Not. R. Astron. Soc., 497, 2276-2285 (2020/September-2)

Enhancement of the tidal disruption event rate in galaxies with a nuclear star cluster: from dwarfs to ellipticals.

PFISTER H., VOLONTERI M., DAI J.L. and COLPI M.

Abstract (from CDS):

We compute the tidal disruption event (TDE) rate around local massive black holes (MBHs) with masses as low as 2.5×104M^☉, thus probing the dwarf regime for the first time. We select a sample of 37 galaxies for which we have the surface stellar density profile, a dynamical estimate of the mass of the MBH, and 6 of which, including our Milky Way, have a resolved nuclear star cluster (NSC). For the Milky Way, we find a total TDE rate of ∼10–4 yr–1 when taking the NSC in account, and ∼10–7 yr–1 otherwise. TDEs are mainly sourced from the NSC for light (<3×1010 M☉) galaxies, with a rate of few 10–5 yr–1, and an enhancement of up to two orders of magnitude compared to non-nucleated galaxies. We create a mock population of galaxies using different sets of scaling relations to explore trends with galaxy mass, taking into account the nucleated fraction of galaxies. Overall, we find a rate of few 10–5 yr–1 which drops when galaxies are more massive than 1011 M☉ and contain MBHs swallowing stars whole and resulting in no observable TDE.

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

Journal keyword(s): galaxies: bulges - galaxies: dwarf - galaxies: nuclei

Simbad objects: 45

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Number of rows : 45
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 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
2 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
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 Z 413-68 G 02 17 03.5780283096 +05 17 31.481644560   15.4       ~ 45 0
6 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
7 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
8 NGC 1320 Sy2 03 24 48.6886857672 -03 02 32.121533436   14.0 14.00     ~ 317 0
9 NGC 1398 GiG 03 38 52.130 -26 20 16.22   10.37   8.90 10.1 ~ 250 0
10 SDSS J043703.67+245606.8 GiG 04 37 03.6816891024 +24 56 06.870657804           ~ 37 0
11 NGC 2273 Sy1 06 50 08.6691789600 +60 50 44.864645136   14.50 13.54     ~ 566 2
12 ESO 558-9 G 07 04 21.002 -21 35 19.36           ~ 36 0
13 Z 286-10 Sy2 07 19 30.892 +59 21 18.48   13.3       ~ 148 0
14 NGC 2960 SyG 09 40 36.3826266216 +03 34 37.235848260   13.60       ~ 197 1
15 NGC 2974 Sy2 09 42 33.2918467632 -03 41 57.038311068   12.19   10.77   ~ 463 0
16 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
17 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
18 IC 2560 Sy2 10 16 18.7073057664 -33 33 49.720274676   12.53 13.31 11.25 12.2 ~ 283 1
19 NGC 3227 Sy1 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1807 2
20 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 862 1
21 NGC 3393 Sy2 10 48 23.4653152920 -25 09 43.487648784   13.10 13.95 11.67 12.2 ~ 471 1
22 Z 66-92 Sy2 11 00 47.9570025384 +10 43 41.359156500   14.8       ~ 75 0
23 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
24 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
25 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
26 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 1084 1
27 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
28 M 88 Sy2 12 31 59.1525062448 +14 25 13.148971824   14.33 13.18     ~ 843 1
29 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
30 NGC 4699 EmG 12 49 02.186 -08 39 51.49   10.8   10.01 10.3 ~ 226 0
31 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
32 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
33 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
34 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
35 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 389 1
36 NGC 5206 GiG 13 33 43.9615937880 -48 09 03.953598228   11.62   10.40   ~ 121 0
37 NGC 5495 Sy2 14 12 23.3599954392 -27 06 29.105572824   13.53 13.5 12.20   ~ 82 3
38 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
39 NGC 5765 PaG 14 50 51.0 +05 07 03           ~ 14 1
40 NGC 6264 Sy2 16 57 16.1272966344 +27 50 58.574330124   15.5       ~ 123 1
41 NGC 6323 GiG 17 13 18.0454114728 +43 46 56.772281424   14.8       ~ 103 1
42 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
43 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
44 ASASSN -15lh ev 22 02 15.4 -61 39 34           ~ 187 1
45 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3

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