JHKL observations of IRAS sources. I

Details JHKL observations of IRAS sources. I JHKL observations of IRAS sources. I

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210p..25w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Sept. 15, 1984, p. 25P-31P.

Astronomy and Astrophysics

Astronomy

13

Astronomical Catalogs, Infrared Astronomy Satellite, Radiation Sources, Spaceborne Astronomy, Galactic Radiation, M Stars, Mira Variables, Stellar Envelopes, T Tauri Stars, Variable Stars

Scientific paper

Thirty IRAS sources have been observed. Seven are galaxies, of which several show a non-stellar emission component. Fourteen lie close to the blackbody lines in JHKL colours and, where more than one observation has been made, these objects are variable and may be OH/IR stars or carbon-rich Mira variables. One object is a T Tauri star. Three objects show the combined effect of a star with a cool dust shell. In these cases the JHKL and IRAS colours demonstrate that a range of temperatures must be present in the circumstellar material. One object is unusual in having a very flat energy distribution from 1.2 - 25 μm. Four objects (if correctly identified with IRAS sources) are probably normal M stars with very cool dust shells.

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