2001ApJ...547..693M

Query : 2001ApJ...547..693M

2001ApJ...547..693M - Astrophys. J., 547, 693-704 (2001/February-1)

Origin of the scatter in the X-ray luminosity of early-type galaxies observed with ROSAT.

MATSUSHITA K.

Abstract (from CDS):

Statistical properties of X-ray luminosity and temperature are studied for 52 early-type galaxies based on the ROSAT PSPC data. All of the X-ray luminous galaxies show largely extended emission with a radius of a few times 10re, while X-ray faint galaxies do not show such a component. This leads to a division of early-type galaxies into two categories: X-ray extended and X-ray compact galaxies. Except for a few galaxies in dense cluster environments, the luminosity and temperature of X-ray compact galaxies are well explained by a kinematical heating of the gas supplied by stellar mass loss. In contrast, X-ray extended galaxies indicate large scatter in the X-ray luminosity. We discuss the notion that X-ray extended galaxies are the central objects of large potential structures and that the presence or absence of this potential is the main origin of the large scatter in the X-ray luminosity.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: ISM - X-Rays: Galaxies - X-Rays: ISM

Simbad objects: 55

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Number of rows : 55
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 524 GiP 01 24 47.7429545736 +09 32 20.089023900   11.5       ~ 494 1
2 NGC 596 GiG 01 32 51.9046959816 -07 01 53.646821220   11.5       ~ 247 0
3 BAX 028.2522-13.7387 ClG 01 53 00.40 -13 44 18.0           ~ 389 0
4 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
5 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
6 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
7 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
8 NGC 1340 GiG 03 28 19.6251763296 -31 04 05.435465520   11.20 10.32 9.70   ~ 222 1
9 NGC 1380 Sy2 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 460 1
10 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
11 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
12 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 289 0
13 NGC 1404 rG 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 787 1
14 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
15 NGC 1549 GiP 04 15 45.223 -55 35 32.50 11.22 10.48 9.79 9.08   ~ 255 1
16 NGC 1553 GiP 04 16 10.4697802536 -55 46 48.072797400 10.76 10.10 9.40 8.74   ~ 395 2
17 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 526 2
18 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
19 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 301 1
20 NGC 3557 Sy1 11 09 57.653 -37 32 21.02   11.50 10.40 9.79   ~ 283 2
21 NGC 3585 GiG 11 13 17.109 -26 45 17.96   10.64   9.22   ~ 304 0
22 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
23 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
24 NGC 3610 GiG 11 18 25.2827189856 +58 47 10.433735988   11.4       ~ 327 0
25 NGC 3640 GiG 11 21 06.852 +03 14 05.15 11.89 11.36 10.44     ~ 291 3
26 NGC 3923 GiG 11 51 01.783 -28 48 22.36 11.41 10.59 9.80 8.88   ~ 459 1
27 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
28 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
29 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
30 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
31 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
32 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 678 0
33 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
34 NGC 4459 H2G 12 29 00.0329905416 +13 58 42.826603332   11.6       ~ 567 0
35 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
36 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
37 NGC 4477 Sy2 12 30 02.1955766304 +13 38 11.543715888 11.98 11.38 10.42     ~ 419 2
38 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
39 NGC 4494 GiP 12 31 24.0391348536 +25 46 30.071664120   10.55 9.74     ~ 491 0
40 NGC 4526 GiC 12 34 03.02853 +07 41 56.9040   10.6       ~ 707 0
41 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
42 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 721 0
43 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
44 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
45 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
46 NGC 4697 GiG 12 48 35.8981498824 -05 48 02.482374564   10.97   9.83   ~ 895 0
47 NGC 4696 rG 12 48 49.2724775784 -41 18 39.304053252   11.21   10.7   ~ 510 3
48 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
49 NGC 5061 Sy2 13 18 05.054 -26 50 14.00   11.18 10.41 9.66 13.59 ~ 181 0
50 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 432 2
51 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
52 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 578 2
53 NGC 6868 Sy2 20 09 54.08207 -48 22 46.2470   11.58 9.22 10.01 7.91 ~ 239 2
54 NGC 7144 GiG 21 52 42.4890937656 -48 15 13.729791132   11.87 10.71 10.39   ~ 156 1
55 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2

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