2003MNRAS.340.1375O

Query : 2003MNRAS.340.1375O

2003MNRAS.340.1375O - Mon. Not. R. Astron. Soc., 340, 1375-1399 (2003/April-3)

X-ray scaling properties of early-type galaxies.

O'SULLIVAN E., PONMAN T.J. and COLLINS R.S.

Abstract (from CDS):

We present an analysis of 39 X-ray luminous early-type galaxies observed with the ROSAT PSPC. Using multicomponent spectral and spatial fits to these data, we have measured halo abundance, temperature, luminosity and surface brightness profile. We compare these measurements to similar results from galaxy groups and clusters, fitting a number of relations commonly used in the study of these larger objects. In particular, we find that the σ-TX relation for our sample is similar to that reported for clusters, consistent with βspec= 1, and that the LX-TXrelation has a steep slope (gradient 4.8±0.7) comparable with that found for galaxy groups. Assuming isothermality, we construct three-dimensional models of our galaxies, allowing us to measure gas entropy. We find no correlation between gas entropy and system mass, but do find a trend for low-temperature systems to have reduced gas fractions. We conclude that the galaxies in our sample are likely to have developed their haloes through galaxy winds, influenced by their surrounding environment.

Abstract Copyright: 2003 RAS

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: haloes - X-rays: galaxies

Simbad objects: 41

goto Full paper

goto View the references in ADS

Number of rows : 41
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 499 LIN 01 23 11.4954761664 +33 27 36.656232300   13.0 12.3     ~ 181 0
2 NGC 507 rG 01 23 39.950 +33 15 22.22   13.0       ~ 459 1
3 NGC 533 rG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 237 1
4 BAX 028.2522-13.7387 ClG 01 53 00.40 -13 44 18.0           ~ 389 0
5 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
6 NGC 741 rG 01 56 23.2 +05 37 35   13.2       ~ 309 2
7 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
8 NGC 1380 Sy2 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 460 1
9 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
10 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 289 0
11 NGC 1404 rG 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 787 1
12 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
13 NGC 1549 GiP 04 15 45.223 -55 35 32.50 11.22 10.48 9.79 9.08   ~ 255 1
14 NGC 1553 GiP 04 16 10.4697802536 -55 46 48.072797400 10.76 10.10 9.40 8.74   ~ 395 2
15 NGC 2300 AG? 07 32 20.486 +85 42 31.90   12.2       ~ 346 0
16 NGC 2832 LIN 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 274 3
17 NGC 3091 BiC 10 00 14.125 -19 38 11.32   12.04 10.61 10.56 9.25 ~ 192 0
18 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
19 NGC 3923 GiG 11 51 01.783 -28 48 22.36 11.41 10.59 9.80 8.88   ~ 459 1
20 NGC 4073 BiC 12 04 27.0598775760 +01 53 45.611893752   13.8 13.21 14.249   ~ 211 1
21 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
22 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
23 NGC 4291 GiG 12 20 17.699 +75 22 15.47   17.0       ~ 321 1
24 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
25 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
26 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
27 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
28 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
29 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
30 NGC 4697 GiG 12 48 35.8981498824 -05 48 02.482374564   10.97   9.83   ~ 895 0
31 MCG-05-31-012 Bla 13 01 00.7843338120 -32 26 28.723182036   13.06 13 11.50   ~ 99 2
32 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
33 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
34 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 432 2
35 NGC 5419 rG 14 03 38.7225244848 -33 58 41.881842120   11.77 11.33 10.21 14.44 ~ 208 3
36 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
37 NGC 6269 rG 16 57 58.1011343880 +27 51 15.883449192   14.4 13.73     ~ 109 1
38 NGC 6482 GiG 17 51 48.8339247888 +23 04 18.889271112 12.71 12.35 11.45     ~ 220 1
39 IC 4765 rG 18 47 18.150 -63 19 52.14   12.33 11.36 10.53 10.75 ~ 88 2
40 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
41 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0

To bookmark this query, right click on this link: simbad:objects in 2003MNRAS.340.1375O and select 'bookmark this link' or equivalent in the popup menu