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Lists of photometric AM candidates
The Geneva photometric m parameter (Nicolet and Cramer, 1982) is used inorder to select Am photometric candidates from the Rufener (1981)catalogue. Two lists are given, the first containing field stars and thesecond cluster stars. According to the photometric criteria thediffusion process probably responsible for the Am phenomenon takes placerather quickly as Am candidates are present in young clusters. It isconfirmed that the phenomenon is enhanced by low rotational velocity andhigh metallicity. The age seems to slightly affect the Am phenomenon.
| Erratum - Discordances Between SAO and HD Numbers for Bright Stars
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Observation and Astrometry data
| Constellation: | Octant |
| Right ascension: | 20h24m54.40s |
| Declination: | -83°18'38.0" |
| Apparent magnitude: | 6.17 |
| Distance: | 77.22 parsecs |
| Proper motion RA: | 23.2 |
| Proper motion Dec: | 7.1 |
| B-T magnitude: | 6.401 |
| V-T magnitude: | 6.169 |
Catalogs and designations:
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