2000ApJ...529..224P

Query : 2000ApJ...529..224P

2000ApJ...529..224P - Astrophys. J., 529, 224-228 (2000/January-3)

Fluorescent molecular hydrogen in the extragalactic giant H II region NGC 5461.

PUXLEY P.J., RAMSAY HOWAT S.K. and MOUNTAIN C.M.

Abstract (from CDS):

We present a sensitive 2 µm spectrum of the extragalactic giant H II complex NGC 5461. The spectrum contains detections of vibrationally excited molecular hydrogen transitions from energy levels to 19000 K. Comparison of the line emission with models of excitation in photon-dominated regions demonstrates unambiguously that the gas is excited by the UV light from the newly formed stars. We derive an abundance ratio of ortho-to-para states in the excited gas of 1.15±0.11, which is among the lowest ever recorded.

Abstract Copyright: ∼

Journal keyword(s): Atomic Processes - galaxies: individual (M101) - ISM: H II Regions - Infrared: ISM: Lines and Bands - ISM: individual (NGC 5461)

Simbad objects: 10

goto Full paper

goto View the references in ADS

Number of rows : 10
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 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 HH 54 HH 12 55 49.5 -76 56 08           ~ 119 0
3 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
4 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
5 NGC 5461 HII 14 03 40.96 +54 19 02.4           ~ 195 0
6 HD 125019 * 14 15 16.9958558592 +52 32 09.324615480   6.642 6.560     A4V 48 0
7 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
8 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
9 Caswell OH 045.12+00.13 HII 19 13 27.85 +10 53 36.7           ~ 121 0
10 PN Hb 12 PN 23 26 14.8236376464 +58 10 54.543292356   13.51 11.49 12.44   Oe 338 0

To bookmark this query, right click on this link: simbad:objects in 2000ApJ...529..224P and select 'bookmark this link' or equivalent in the popup menu