The infrared source associated with SH 2-149

Details The infrared source associated with SH 2-149 The infrared source associated with SH 2-149

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....67..273r&link_type=abstract

Astronomy and Astrophysics, vol. 67, no. 2, July 1978, p. 273-275. NSF-NASA-supported research.

Astronomy and Astrophysics

Astrophysics

4

Astronomical Spectroscopy, Infrared Spectra, Point Sources, Stellar Spectra, O Stars, Stellar Luminosity, Supergiant Stars

Scientific paper

Observations at optical and infrared wavelengths of the bright infrared point source in the direction of Sh 2-149 are used to determine a spectral type (M1) and luminosity class (Ib-II) for the object. These observations contradict the suggestion of Bergeat et al. (1975) that the object is a highly reddened O star. The estimated visual extinction (approximately 5-7 magnitudes) and luminosity class derived from the present observations are used to estimate the distance (about 1-3 kpc) to the infrared source.

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