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Spectroscopic analysis of southern B and Be stars
Spectroscopic monitoring of 141 southern field B-type stars, 114 of themknown to exhibit the Be phenomenon, allowed the estimation of theirprojected rotational velocities, effective temperatures and superficialgravities from both line and equivalent width fitting procedures.Stellar ages, masses and bolometric luminosities were derived frominternal structure models. Without taking into account the effects ofgravity darkening, we note the occurrence of the Be phenomenon in laterstages of main-sequence phase.
| H-beta photometry of southern early-type stars
H-beta photoelectric photometry is presented for 209 southern hemisphereearly-type stars from the HD catalog with galactic latitudes /b/ greaterthan 6 deg. Four-color photometry exists for all these stars and MKtypes for most of them. Absolute magnitudes have been estimated for allbut the emission-line stars and distances from the sun and the galacticplane determined.
| Four colour photometry of southern early-type stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978MNRAS.182..629K&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Poppa |
| Ascensione retta: | 07h29m48.01s |
| Declinazione: | -44°54'42.9" |
| Magnitudine apparente: | 7.834 |
| Distanza: | 518.135 parsec |
| Moto proprio RA: | -5 |
| Moto proprio Dec: | 10.6 |
| B-T magnitude: | 7.802 |
| V-T magnitude: | 7.832 |
Cataloghi e designazioni:
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