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1998A&A...338L...5D - Astronomy and Astrophysics, volume 338, L5-8 (1998/10-1)
ORFEUS II echelle spectra: Absorption by H2 in the LMC.
DE BOER K.S., RICHTER P., BOMANS D.J., HEITHAUSEN A. and KOORNNEEF J.
Abstract (from CDS):
We report the first detection of H2 absorption profiles of LMC gas on the line of sight to star 3120 in the association LH10 near the emission nebula N11B. Transitions found in the Lyman band are used to derive a total column density N(H2)=6.6x1018cm–2. Excitation temperatures of ≤50K for levels J≤1 and of ≃470K for levels 2≤J≤4 of H2 are derived. We conclude that moderate UV pumping influences the population even of the lowest rotational states in this LMC gas.
Abstract Copyright: ∼
Journal keyword(s): space vehicles - ISM: molecules - galaxies: ISM - Magellanic Clouds: LMC - stars: individual: LH 10:3120 - ultraviolet: ISM
Simbad objects: 4
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