1995A&A...302..658S

Query : 1995A&A...302..658S

1995A&A...302..658S - Astronomy and Astrophysics, volume 302658-664 (1995/10-3)

Distribution of ionized gas in X-ray bright early-type galaxies.

SINGH K.P., BHAT P.N., PRABHU T.P. and KEMBHAVI A.K.

Abstract (from CDS):

We report imaging observations of Hα+[N II] nebulosities in seven early type galaxies viz., NGC 1399, NGC 1600, NGC 2563, NGC 4203, NGC 4636, NGC 4753 and NGC 5044. These are primarily X-ray bright galaxies which are the dominant members of nearby groups. Many of these galaxies have X-ray cooling flows. The results are based on CCD surface photometry carried out using a broad-band filter R, and a narrow band filter appropriate for the red-shifted Hα+[N II] emission. We present the integrated Hα luminosities in these galaxies and examine various emission mechanisms. The observed Hα luminosity implies a mass of ∼105M☉ in the ionized gas. We suggest that photo-ionization by young stars is a viable emission mechanism and star formation due to accretion events or mergers may be common in these galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular - cooling flows - ISM - interactions

Simbad objects: 18

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Number of rows : 18
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 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
2 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
3 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
4 NGC 2563 GiG 08 20 35.6870161656 +21 04 04.111020012   13.7 12.39     ~ 163 1
5 NAME Cancer Cluster ClG 08 20 54 +21 04.5           ~ 161 0
6 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
7 [HG82] 56 GrG 11 06 +14.8           ~ 7 0
8 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
9 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
10 [FWB89] GrG 155 GrG 11 56.4 +47 30   6.4       ~ 17 0
11 NGC 4203 LIN 12 15 05.0549203560 +33 11 50.383965120   12.98 11.99     ~ 514 2
12 [HG82] 41 GrG 12 36 +07.4           ~ 6 0
13 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
14 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
15 NGC 4696 rG 12 48 49.2724775784 -41 18 39.304053252   11.21   10.7   ~ 510 3
16 NGC 4753 GiG 12 52 22.112 -01 11 58.88 11.26 10.85 9.95     ~ 288 1
17 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
18 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0

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