2020MNRAS.493.5369P

Query : 2020MNRAS.493.5369P

2020MNRAS.493.5369P - Mon. Not. R. Astron. Soc., 493, 5369-5381 (2020/April-3)

Vertical distribution of HMXBs in NGC 55: constraining their centre-of-mass velocity.

POLITAKIS B., ZEZAS A., ANDREWS J.J. and WILLIAMS S.J.

Abstract (from CDS):

We analyse the vertical distribution of high-mass X-ray binaries (HMXBs) in NGC 55, the nearest edge-on galaxy to the Milky Way (MW), based on X-ray observations by Chandra. Adopting a statistical approach, we estimate the difference between the scale height of the vertical distribution of HMXBs and the vertical distribution of star-forming activity between 0.33 and 0.57 kpc. The spatial offsets can be explained by a momentum kick the X-ray binaries receive during the formation of the compact object after a supernova explosion of the primary star. Determining the vertical distribution of HMXBs in the MW using Gaia DR2 astrometry, we find that the corresponding difference is considerably lower at 0.036 ± 0.003 kpc, attributed to the greater gravitational potential of the MW. We also calculate the centre-of-mass transverse velocities of HMXBs in NGC 55, using traveltime information from binary population synthesis codes and for different star formation histories (SFHs). For a flat SFH model (typical of spiral galaxies like NGC 55), we find that HMXBs are moving with a typical transverse velocity between 34 and 48 km s–1, consistent with space velocities of MW HMXBs. For an exponentially declining SFH model, HMXBs are moving at a velocity of 21 km s–1, consistent with the corresponding velocity of HMXBs in the Small Magellanic Cloud and Large Magellanic Cloud. Finally, we estimate the formation efficiency of HMXBs in NGC 55 at 299–46+50 (systems/M☉ yr–1), consistent within the errors with the Magellanic Clouds but significantly higher than the MW, a difference that can be explained by the subsolar metallicity of NGC 55.

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

Journal keyword(s): X-rays: stars - binaries: close

Simbad objects: 79

goto Full paper

goto View the references in ADS

Number of rows : 79
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 [BWE2015] NGC 55 49 LXB 00 14 12.400 -39 10 17.82           ~ 2 0
2 2XMM J001416.1-391348 AGN 00 14 16.1224732704 -39 13 47.856195840   20.86   20.63   ~ 3 0
3 [BWE2015] NGC 55 52 HXB 00 14 19.227 -39 10 14.66           ~ 2 0
4 [BWE2015] NGC 55 44 HXB 00 14 19.356 -39 11 13.52           ~ 2 0
5 [BWE2015] NGC 55 60 AGN 00 14 29.241 -39 07 52.48           ~ 2 0
6 [BWE2015] NGC 55 37 LXB 00 14 30.404 -39 12 57.81           ~ 2 0
7 [BWE2015] NGC 55 39 LX? 00 14 38.520 -39 12 42.21           ~ 2 0
8 [BWE2015] NGC 55 59 LXB 00 14 40.815 -39 09 37.89           ~ 2 0
9 [BWE2015] NGC 55 68 AGN 00 14 42.911 -39 06 30.56           ~ 2 0
10 [BWE2015] NGC 55 40 HXB 00 14 43.610 -39 12 40.05           ~ 2 0
11 [BWE2015] NGC 55 55 LX? 00 14 43.816 -39 11 27.42           ~ 2 0
12 [BWE2015] NGC 55 58 HXB 00 14 45.012 -39 10 53.79           ~ 2 0
13 [BWE2015] NGC 55 31 HXB 00 14 46.836 -39 13 58.95           ~ 2 0
14 [BWE2015] NGC 55 36 HXB 00 14 47.341 -39 13 02.58           ~ 2 0
15 [BWE2015] NGC 55 64 HXB 00 14 47.430 -39 09 44.13           ~ 2 0
16 [BWE2015] NGC 55 43 HXB 00 14 48.622 -39 12 15.95           ~ 2 0
17 [BWE2015] NGC 55 28 HXB 00 14 49.818 -39 13 52.35           ~ 2 0
18 2XMM J001450.6-390900 AGN 00 14 50.58 -39 09 01.2   22.61       ~ 4 0
19 [BWE2015] NGC 55 56 HXB 00 14 50.906 -39 11 54.57           ~ 2 0
20 [BWE2015] NGC 55 32 LXB 00 14 52.126 -39 13 34.35           ~ 2 0
21 [CHG2008] C2-18 HXB 00 14 52.32 -39 12 05.8     19.453   20.044 B2.5II 3 0
22 [BWE2015] NGC 55 30 LXB 00 14 52.573 -39 13 34.01           ~ 2 0
23 [BWE2015] NGC 55 42 HXB 00 14 52.599 -39 12 24.30           ~ 2 0
24 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
25 [BWE2015] NGC 55 27 LXB 00 14 54.295 -39 13 32.19           ~ 2 0
26 [BWE2015] NGC 55 38 HXB 00 14 54.411 -39 12 44.87           ~ 2 0
27 [BWE2015] NGC 55 26 HXB 00 14 54.598 -39 13 37.19           ~ 2 0
28 [BWE2015] NGC 55 69 HX? 00 14 55.472 -39 09 46.12           ~ 2 0
29 [BWE2015] NGC 55 11 AGN 00 14 56.085 -39 16 18.61           ~ 2 0
30 [BWE2015] NGC 55 29 HXB 00 14 56.775 -39 13 17.34           ~ 2 0
31 [BWE2015] NGC 55 47 LXB 00 14 57.167 -39 12 27.77           ~ 2 0
32 [BWE2015] NGC 55 35 HXB 00 14 59.942 -39 12 49.17           ~ 2 0
33 [BWE2015] NGC 55 10 LX? 00 15 00.623 -39 14 14.23           ~ 2 0
34 [BWE2015] NGC 55 61 HXB 00 15 00.689 -39 12 18.01           ~ 2 0
35 [BWE2015] NGC 55 41 LXB 00 15 01.511 -39 12 43.16           ~ 2 0
36 [BWE2015] NGC 55 71 HXB 00 15 02.057 -39 11 45.55           ~ 2 0
37 [BWE2015] NGC 55 2 AGN 00 15 02.094 -39 16 46.16           ~ 2 0
38 [BWE2015] NGC 55 6 HXB 00 15 02.184 -39 14 25.21           ~ 2 0
39 [BWE2015] NGC 55 75 HX? 00 15 02.747 -39 10 28.80           ~ 2 0
40 [BWE2015] NGC 55 66 HXB 00 15 03.431 -39 12 39.55           ~ 2 0
41 [BWE2015] NGC 55 78 HX? 00 15 03.795 -39 12 41.40           ~ 2 0
42 [BWE2015] NGC 55 79 HX? 00 15 04.036 -39 11 53.78           ~ 2 0
43 [BWE2015] NGC 55 94 HX? 00 15 04.257 -39 12 39.92           ~ 2 0
44 [BWE2015] NGC 55 80 HX? 00 15 04.570 -39 10 43.91           ~ 2 0
45 [BWE2015] NGC 55 81 HX? 00 15 04.681 -39 10 50.55           ~ 2 0
46 [BWE2015] NGC 55 143 HX? 00 15 05.381 -39 13 13.72           ~ 2 0
47 [BWE2015] NGC 55 116 LXB 00 15 06.454 -39 12 46.08           ~ 2 0
48 [BWE2015] NGC 55 138 LXB 00 15 07.626 -39 13 23.55           ~ 2 0
49 [BWE2015] NGC 55 88 LXB 00 15 08.815 -39 11 18.01           ~ 2 0
50 [BWE2015] NGC 55 152 AGN 00 15 08.895 -39 16 48.65           ~ 2 0
51 [BWE2015] NGC 55 92 HX? 00 15 11.923 -39 11 10.77           ~ 2 0
52 [BWE2015] NGC 55 96 HX? 00 15 13.656 -39 11 41.73           ~ 2 0
53 [BWE2015] NGC 55 123 LXB 00 15 14.226 -39 13 20.63           ~ 2 0
54 [BWE2015] NGC 55 99 HX? 00 15 14.850 -39 11 51.96           ~ 2 0
55 [BWE2015] NGC 55 140 HX? 00 15 15.887 -39 15 08.76           ~ 2 0
56 2XMM J001519.4-390917 AGN 00 15 19.47 -39 09 18.4   22.03       ~ 3 0
57 [BWE2015] NGC 55 101 HX? 00 15 20.027 -39 11 37.09           ~ 2 0
58 [BWE2015] NGC 55 109 LXB 00 15 20.601 -39 12 19.55           ~ 2 0
59 [BWE2015] NGC 55 103 HX? 00 15 22.252 -39 11 36.40           ~ 2 0
60 [BWE2015] NGC 55 133 HXB 00 15 22.784 -39 14 52.73           ~ 2 0
61 [BWE2015] NGC 55 120 HXB 00 15 23.362 -39 13 37.98           ~ 2 0
62 [BWE2015] NGC 55 95 AGN 00 15 23.780 -39 09 46.84           ~ 2 0
63 [BWE2015] NGC 55 117 HXB 00 15 26.034 -39 12 56.35           ~ 2 0
64 [BWE2015] NGC 55 106 LXB 00 15 28.176 -39 11 51.24           ~ 2 0
65 [BWE2015] NGC 55 130 HXB 00 15 33.981 -39 15 11.80           ~ 2 0
66 [BWE2015] NGC 55 111 HXB 00 15 38.002 -39 12 32.89           ~ 2 0
67 [BWE2015] NGC 55 108 AGN 00 15 39.404 -39 11 47.39           ~ 2 0
68 [BWE2015] NGC 55 121 HX? 00 15 42.192 -39 14 31.93           ~ 2 0
69 2XMM J001544.2-391208 HXB 00 15 44.3192197176 -39 12 08.776400580   21.71   20.28   ~ 3 0
70 [BWE2015] NGC 55 104 AGN 00 15 45.896 -39 10 22.75           ~ 2 0
71 XMMU J001548.1-391612 HX? 00 15 48.1 -39 16 12           ~ 3 0
72 [BWE2015] NGC 55 135 HX? 00 15 48.2622008448 -39 18 39.694064544   18.61   17.50   ~ 5 0
73 [BWE2015] NGC 55 113 AGN 00 15 52.146 -39 12 30.64           ~ 2 0
74 [BWE2015] NGC 55 118 HX? 00 15 56.817 -39 13 39.74           ~ 2 0
75 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
76 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
77 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
78 1H 1936+541 * 19 37 50 +54 14.2           Be 15 0
79 CIZA J1938.3+5409 ClG 19 38 18.6 +54 09 33           ~ 42 0

To bookmark this query, right click on this link: simbad:objects in 2020MNRAS.493.5369P and select 'bookmark this link' or equivalent in the popup menu