Browsing by Subject "Infrared spectra"

Now showing items 1-4 of 4

CN 1-1 - A peculiar compact planetary nebula

Bhatt, H. C; Mallik, D. C. V (The European Southern Observatory, 1986-11)

Cn 1-1 is an emission-line object that shows strong emission lines characteristic of high density planetary nebulae superposed on the stellar spectrum of an F5 III-IV star. The authors estimate the absolute luminosity of ...
Modelling infrared spectra of a few compact HII regions

Ghosh, S. K; Verma, R. P (Astronomical Society of India, 1999)

The observed near infrared to sub-mm spectra of five compact HII regions, viz., IRAS 18116-1646, 18162-2048, 19422+2427, 22308+5812 and 18434-0242, consisting of the continuum as well as several features, have been explained ...
Polarimetric observations of the RV Tauri star AR Puppis

Raveendran, A. V; Kameswara Rao, N (European Southern Observatory, 1988-03)

UBVRI polarimetry of AR Pup is presented. Large variations are seen both in the amount and direction of polarization. On one occasion, the polarization in U was found to be as high as 14.6 percent. Polarization level ...
Simultaneous infrared and H-alpha measurements of Be stars

Apparao, K. M. V; Tarafdar, S. P; Verma, R. P; Iyengar, K. V. K; Ghosh, K. K (Indian Academy of Sciences, 1993)

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 ...

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