A study of the Chamaeleon I dark cloud and T-association. III. Near-infrared photometry of IRAS-selected field stars.
The authors present the results of a programme of ground-based near-infrared (JHKL) photometry for 28 IRAS-selected sources in Chamaeleon I unassociated with previously known members of the pre-main-sequence population. Ground-based data are combined with IRAS results (including those from the Serendipitous Survey data base) to investigate the nature and evolutionary status of the sample. A search for highly reddened background stars was unsuccessful, but four previously unrecognized young embedded stars were identified, of which one (11057-7706) may still be in the accretion phase. The authors also extracted Serendipitous Survey data for optically selected members of the T-association, and report IRAS identifications for several which do not appear in the Point Source Catalog. The total number of young stars in Chamaeleon I detected as point sources by IRAS is now 36. Surprisingly, this total includes only 57 per cent of the optical T Tauri stars, a success rate similar to that observed in the Taurus-Auriga clouds. IRAS does not provide a complete census of young stars in nearby dark clouds.
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 1991
- Dark Matter;
- Early Stars;
- Infrared Photometry;
- Interstellar Matter;
- Star Formation;
- Color-Color Diagram;
- Infrared Astronomy Satellite;
- Near Infrared Radiation;
- Spectral Energy Distribution;
- T Tauri Stars;