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A survey for infrared excesses among high galactic latitude SAO stars
This project involves extending the previous analysis of infraredexcesses among a volume-limited sample of 134 nearby A-K main-sequencestars to a magnitude-limited sample of stars, culled from the SAOCatalog, with excesses determined from the IRAS Point Source Catalogflux density ratios. This new sample includes 5706 B-M type stars, 379of which have infrared excesses. The objective involved use of astatistically complete survey of objects in a standard catalog in orderto assess the frequency with which different physical processes canaffect the infrared output of stars. These processes include, but arenot limited to, orbiting cold particle clouds and the onset of rapidmass loss. It is concluded that cold disks are consistent with theinfrared excesses found among A-G dwarfs and G-K giants in the sample.
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Osservazione e dati astrometrici
| Costellazione: | Corona Australe |
| Ascensione retta: | 19h15m36.98s |
| Declinazione: | -38°50'44.1" |
| Magnitudine apparente: | 7.952 |
| Distanza: | 321.543 parsec |
| Moto proprio RA: | 9.2 |
| Moto proprio Dec: | -13.8 |
| B-T magnitude: | 9.487 |
| V-T magnitude: | 8.079 |
Cataloghi e designazioni:
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