A Search for T Tauri Stars in High-Latitude Molecular Clouds. I. IRAS Sources and CCD Imaging
Abstract
Results are reported from a search for excess H-alpha emission from point sources in 19 high-Galactic-latitude molecular clouds (two dark clouds and 17 translucent clouds). A total of 111 candidate sources from the IRAS Point Source Catalog were evaluated, but most of these (except for five T Tau stars in the dark clouds) were found to be 100-micron cirrus sources, galaxies, or field stars. CCD observations of 23 ambiguous sources were obtained in the red and H-alpha bands using a CCD detector on the 0.9-m telescope at KPNO during September 1987 and February 1988: no H-alpha/R ratios more than 5 sigma above the respective field averages were found. It is concluded that significant low-mass star formation in translucent high-latitude molecular clouds is unlikely.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1990
- DOI:
- 10.1086/168948
- Bibcode:
- 1990ApJ...357..602M
- Keywords:
-
- Charge Coupled Devices;
- Infrared Astronomy Satellite;
- Molecular Clouds;
- Pre-Main Sequence Stars;
- Star Formation;
- T Tauri Stars;
- Astronomical Photography;
- H Alpha Line;
- Infrared Sources (Astronomy);
- Milky Way Galaxy;
- Astrophysics;
- HIGH-LATITUDE OBJECTS;
- INFRARED: SOURCES;
- INTERSTELLAR: MOLECULES;
- STARS: FORMATION;
- STARS: PRE--MAIN-SEQUENCE