2010ApJ...723.1375R

Query : 2010ApJ...723.1375R

2010ApJ...723.1375R - Astrophys. J., 723, 1375-1392 (2010/November-2)

The hot interstellar medium of the interacting galaxy NGC 4490.

RICHINGS A.J., FABBIANO G., WANG J. and ROBERTS T.P.

Abstract (from CDS):

We present an analysis of the hot interstellar medium (ISM) in the spiral galaxy NGC 4490, which is interacting with the irregular galaxy NGC 4485, using ∼100 ks of Chandra ACIS-S observations. The high angular resolution of Chandra enables us to remove discrete sources and perform spatially resolved spectroscopy for the star-forming regions and associated outflows, allowing us to look at how the physical properties of the hot ISM such as temperature, hydrogen column density, and metal abundances vary throughout these galaxies. We find temperatures of >0.41 keV and 0.85+0.59–0.12keV, electron densities of >1.87η–1/2x10–3 cm–3 and 0.21+0.03–0.04η–1/2 x 10–3/cm3, and hot gas masses of >1.1η1/2x107 M☉and ∼3.7η1/2x107 M☉ in the plane and halo of NGC 4490, respectively, where η is the filling factor of the hot gas. The abundance ratios of Ne, Mg, and Si with respect to Fe are found to be consistent with those predicted by theoretical models of type II supernovae (SNe). The thermal energy in the hot ISM is ∼5% of the total mechanical energy input from SNe, so it is likely that the hot ISM has been enriched and heated by type II SNe. The X-ray emission is anticorrelated with the Hα and mid-infrared emission, suggesting that the hot gas is bounded by filaments of cooler ionized hydrogen mixed with warm dust.

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Journal keyword(s): galaxies: individual: NGC 4485/90 - galaxies: interactions - galaxies: ISM - X-rays: galaxies - X-rays: ISM

Simbad objects: 70

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Number of rows : 70
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2154 2
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12635 1
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3332 2
4 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5853 6
5 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1462 0
6 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1331 1
7 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1689 0
8 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1159 1
9 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1083 1
10 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6633 0
11 CXOU J123023.5+413652 X 12 30 23.4 +41 36 52           ~ 2 0
12 CXOU J123023.9+413921 X 12 30 23.9 +41 39 21           ~ 1 0
13 CXOU J123024.0+413840 HXB 12 30 23.9 +41 38 41           ~ 3 0
14 CXOU J123025.3+413924 HXB 12 30 25.2 +41 39 24           ~ 3 0
15 CXOU J123026.1+413639 X 12 30 26.1 +41 36 39           ~ 1 0
16 CXO J123026.7+413822 HXB 12 30 26.7 +41 38 22           ~ 2 0
17 CXOU J123027.3+413813 HXB 12 30 27.2 +41 38 14           ~ 3 0
18 CXO J123027.6+413941 HXB 12 30 27.6 +41 39 41           ~ 3 0
19 CXOU J123028.3+413958 HXB 12 30 28.2 +41 39 58           ~ 3 0
20 CXO J123028.6+413926 HXB 12 30 28.5 +41 39 26           ~ 3 0
21 CXOU J123028.8+413756 HXB 12 30 28.7 +41 37 57           ~ 3 0
22 CXO J123029.1+414046 HXB 12 30 29.0 +41 40 46           ~ 3 0
23 CXOU J123029.4+414058 X 12 30 29.4 +41 40 58           ~ 1 0
24 [SST2011] J123029.55+413927.6 HXB 12 30 29.449 +41 39 27.55           ~ 16 0
25 CXOU J123030.3+414126 X 12 30 30.3 +41 41 26           ~ 1 0
26 CXOU J123030.4+413852 HXB 12 30 30.3 +41 38 53           ~ 12 0
27 RX J1230.5+4141 ULX 12 30 30.34 +41 41 41.0           ~ 24 2
28 CXOU J123030.4+413956 X 12 30 30.4 +41 39 56           ~ 1 0
29 CXOU J123030.5+413945 X 12 30 30.5 +41 39 45           ~ 1 0
30 [SST2011] J123030.82+413911.5 HXB 12 30 30.82 +41 39 11.5           ~ 17 0
31 CXOU J123031.1+413837 HXB 12 30 31.0 +41 38 38           ~ 3 0
32 NGC 4485 GiP 12 30 31.113 +41 42 04.22 12.10 12.42 11.93 11.93   ~ 284 2
33 CXO J123031.3+413901 HXB 12 30 31.2 +41 39 01           ~ 3 0
34 CXOU J123031.6+414141 X 12 30 31.6 +41 41 41           ~ 1 0
35 CXOU J123032.1+413753 X 12 30 32.1 +41 37 53           ~ 1 0
36 [SST2011] J123032.27+413918.1 HXB 12 30 32.27 +41 39 18.1           ~ 19 0
37 CXOU J123032.8+413845 HXB 12 30 32.8 +41 38 45           ~ 2 0
38 CXOU J123032.9+414014 HXB 12 30 32.9 +41 40 14           ~ 2 0
39 CXOU J123033.6+414057 X 12 30 33.6 +41 40 57           ~ 1 0
40 CXOU J123034.1+413819 X 12 30 34.1 +41 38 19           ~ 1 0
41 JCMTSE J123034.5+413856 HXB 12 30 34.1 +41 38 59           ~ 3 0
42 CXOU J123034.3+413805 HXB 12 30 34.2 +41 38 05           ~ 3 0
43 CXOU J123034.2+413845 X 12 30 34.2 +41 38 45           ~ 1 0
44 CXOU J123034.3+413850 HXB 12 30 34.3 +41 38 50           ~ 3 0
45 CXOU J123034.4+413834 X 12 30 34.4 +41 38 34           ~ 1 0
46 NGC 4490 GiP 12 30 34.5 +41 38 26 10.03 10.22 9.79     ~ 574 3
47 CXOU J123035.2+413846 HXB 12 30 35.1 +41 38 47           ~ 5 0
48 CXOU J123035.9+413832 HXB 12 30 35.8 +41 38 32           ~ 3 0
49 CXOU J123036.3+413803 X 12 30 36.3 +41 38 03           ~ 1 0
50 [SST2011] J123036.32+413837.8 HXB 12 30 36.32 +41 38 37.8           ~ 20 1
51 CXOU J123036.6+413759 X 12 30 36.6 +41 37 59           ~ 1 0
52 CXOU J123037.5+413803 X 12 30 37.5 +41 38 03           ~ 1 0
53 CXOU J123037.8+413823 HXB 12 30 37.8 +41 38 23           ~ 2 0
54 CXO J123038.4+413831 HXB 12 30 38.3 +41 38 31           ~ 9 0
55 CXOU J123038.5+413742 X 12 30 38.8 +41 37 43           ~ 3 0
56 CXO J123038.8+413810 HXB 12 30 38.8 +41 38 10           ~ 3 0
57 CXO J123038.9+413822 HXB 12 30 38.9 +41 38 22           ~ 3 0
58 CXOU J123039.1+413751 X 12 30 39.0 +41 37 51           ~ 2 0
59 CXOU J123040.4+413813 HXB 12 30 40.3 +41 38 13           ~ 3 0
60 CXOU J123042.9+414030 X 12 30 42.9 +41 40 30           ~ 1 0
61 CXOU J123043.1+413756 HXB 12 30 43.0 +41 37 56           ~ 3 0
62 2XMM J123043.1+413819 HXB 12 30 43.25 +41 38 18.4           ~ 22 1
63 CXOU J123045.6+413639 HXB 12 30 45.5 +41 36 40           ~ 3 0
64 CXOU J123046.5+414031 X 12 30 46.5 +41 40 31           ~ 1 0
65 CXOU J123047.9+413727 HXB 12 30 47.7 +41 37 27           ~ 3 0
66 CXOU J123047.8+413807 HXB 12 30 47.7 +41 38 07           ~ 3 0
67 2XMM J123049.5+414057 AG? 12 30 49.4776254168 +41 40 56.837913852           ~ 4 0
68 ESO 137-1 AG? 16 13 27.305 -60 45 50.59   14.84   13.87   ~ 116 0
69 ESO 137-2 GiG 16 13 35.651 -60 51 54.60   13.75   12.43   ~ 44 0
70 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 296 2

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