Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.191..701b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 191, June 1980, p. 701-709. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
49
Emission Spectra, Infrared Astronomy, Infrared Spectroscopy, Main Sequence Stars, Spectrum Analysis, Absorption Spectra, Interstellar Extinction, Line Spectra, Stellar Envelopes, Stellar Evolution
Scientific paper
Infrared spectroscopy of the pre-main sequence Be star HD 97048 shows strong emission features in the 3.3-3.6 micron region. The strongest feature occurs at 3.50 microns, is unresolved and has an FWHM of about 0.08 micron. Visual spectroscopy confirms the spectral classification of B9-A0 Ve and indicates weak interstellar absorption, implying that the star is not deeply embedded in the nearby Chamaeleon dark cloud. An effective reddening of E(B-V) approximately equal to 0.075 is suggested. It is concluded that the emission must arise in the circumstellar shell of the star, and a possible identification with vibrationally excited solid HCHO in grain mantles is discussed.
Blades Chris J.
Whittet Doug C. B.
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