Near Infrared Photometry of Protostars

Details Near Infrared Photometry of Protostars Near Infrared Photometry of Protostars

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982msngr..30...21f&link_type=abstract

The Messenger, No.30, P. 21, 1982

Physics

1

Scientific paper

For several years our group at Stockholm Observatory has been involved in a far infrared study 0f star-forming regions. This project, which is performed in collaboration with the University of Groningen in the Netherlands, consists of mapping molecular clouds, where we have indications of star formation, with a two-channel photometer. The photometer is fed by a 60 cm telescope which is carried to 35 km altitude by a helium-lilled balloon. The two channels of the photometer are sensitive between 60 and 200 microns. In the clouds we are studying there are objects strongly believed to be protostars. These stars heat up the dust surrounding them, and the dust then reemits the stellar radiation at far-infrared wavelengths. In this way we can study this type 01 very young objects although they are totally obscured in the visual part of the spectrum. We have studied several objects in which known near-infrared (1 to 5 microns) sources are Iying. In fact we used the existence 0f near-infrared sources as one 0f our indicators for on-going star formation. The balloon data made it possible to assign an accurate total luminosity to each 0f these sources.

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