IRAS observations of the giant shell surrounding Lambda Orionis

Details IRAS observations of the giant shell surrounding Lambda Orionis IRAS observations of the giant shell surrounding Lambda Orionis

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987iraj...18...91m&link_type=abstract

(Astronomical Science Group of Ireland, Meeting, Trinity College, Dublin, Apr. 6, 1987) Irish Astronomical Journal (ISSN 0021-10

Astronomy and Astrophysics

Astronomy

3

B Stars, Far Infrared Radiation, H Ii Regions, Infrared Astronomy Satellite, O Stars, Orion Constellation, Angular Resolution, Earth Atmosphere

Scientific paper

Data from IRAS observations of the large ionization-bound H II region around Lambda Ori, obtained at 12, 25, 60, and 100 microns during 1983, are presented in tables and a 100-micron surface-brightness map and analyzed. The focus is on possible star formation in 10 clumps with enhanced emission, located to the west of the central star. It is found that internal heating is required to explain the observed luminosity of at least some of these clumps. The fragmentation of the expanding shell into clumps is attributed to a Rayleigh-Taylor instability.

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