2005MNRAS.360..748J


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.02CEST05:00:17

2005MNRAS.360..748J - Mon. Not. R. Astron. Soc., 360, 748-762 (2005/June-3)

HII and H2in the envelopes of cooling flow central galaxies.

JAFFE W., BREMER M.N. and BAKER K.

Abstract (from CDS):

We report observations of ionized and warm molecular gas in the extended regions of the central galaxies in several cooling flow clusters. These show that both gas phases are present in these clusters to large radii. We trace both Paα and H2lines to radii in excess of 20 kpc. The surface brightness profiles of the two phases trace each other closely. Apart from very close to the central active galactic nucleus (AGN), line ratios in and between the phases vary only slowly with position. The kinematics of the phases are indistinguishable, and away from the influence of the central AGN both the mean and dispersion in velocity are low (≤100 km/s), ruling out kinematic support of the molecular gas. All of the above indicate that the mechanisms for heating the molecular gas and ionizing the Hii regions are highly coupled. The highest surface brightness emission within a few kiloparsecs of the central AGN is distinct, both kinematically and thermally, from that at larger radii. The relative strengths of the Paα to the H2lines indicate a source of ultraviolet excitation rich in extreme-ultraviolet relative to far-ultraviolet photons, e.g. a blackbody with a temperature ≥105 K.

Abstract Copyright: 2005 RAS

Journal keyword(s): molecular processes - Hii regions - ISM: molecules - cooling flows

Status at CDS:  

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 1068 ClG 10 40 47.1 +39 57 19           ~ 183 0
2 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1150 0
3 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 620 1
4 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 850 0
5 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 396 0
6 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 563 1
7 LEDA 68751 Sy1 22 23 49.7 -02 06 13   16.93 15.77 16.02   ~ 429 2
8 ACO S 1101 ClG 23 13 58.5 -42 43 39           ~ 230 1
9 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 490 0

    Equat.    Gal    SGal    Ecl

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2020.06.02-05:00:17

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