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Title: Simultaneous infrared and H-alpha measurements of Be stars
Authors: Apparao, K. M. V
Tarafdar, S. P
Verma, R. P
Iyengar, K. V. K
Ghosh, K. K
Keywords: B stars;Emission spectra;H alpha line;Infrared astronomy;Infrared spectra;Infrared photometry;Infrared spectroscopy;Line spectra;Stellar envelopes;Stellar models
Issue Date: 1993
Publisher: Indian Academy of Sciences
Citation: Journal of Astrophysics and Astronomy , Vol. 14, No. 3&4, pp. 131 - 134
Abstract: The observed infrared excess in Be stars is usually interpreted as free-free and free-bound emission from a hot gas envelope around the Be star. This hot gas should also emit H-alpha line radiation. Earlier observations had suggested that the infrared excess and H-alpha radiation were not consistent with models in which they arise from the same ionized region; however the observations were made at different times. We have made simultaneous observation of infrared and H-alpha line radiation. Our observations imply that either both these radiations cannot arise from the same hot gas or additional processes have to be invoked to account for the observed excess infrared radiation
Appears in Collections:IIAP Publications

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