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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.
| Multicolor photometry of metallic-line stars. III. A photometric catalogue
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974RMxAA...1..175M&db_key=AST
| Slit Spectra of Some Peculiar and Metallic-Line A Stars
Not Available
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Yengec |
| Sað Açýklýk: | 08h56m23.60s |
| Yükselim: | +21°51'33.7" |
| Görünürdeki Parlaklýk: | 9.267 |
| özdevim Sað Açýklýk: | -4 |
| özdevim Yükselim: | -9.5 |
| B-T magnitude: | 9.5 |
| V-T magnitude: | 9.287 |
Kataloglar ve belirtme:
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