2-4 micrometer spectroscopy of the compact H II region G 45.13 + 0.14 A

Details 2-4 micrometer spectroscopy of the compact H II region G 45.13 + 0.14 A 2-4 micrometer spectroscopy of the compact H II region G 45.13 + 0.14 A

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...114...19k&link_type=abstract

Astronomy and Astrophysics, vol. 114, no. 1, Oct. 1982, p. 19-22.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Spectroscopy, Emission Spectra, H Ii Regions, H Lines, Infrared Spectra, Interstellar Extinction, Astronomical Photometry, Continuous Spectra, O Stars, Spectrum Analysis

Scientific paper

The optically obscured compact H II region G 45.13 + 0.14 A has been observed from 2-4 micrometers both photometrically and spectroscopically. Spectral features observed include the B-alpha, B-gamma, and Pf-gamma hydrogen recombination lines, the He I line at 2.06 micrometers, and possibly the unidentified 3.28 micrometer feature. The strength of the HE I line implies that the nebula is ionization-bounded. The data confirm a previously described power law spectrum which increases toward longer wavelengths. A variety of reddening estimates indicate a visual extinction of 20 mag.

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