21 Vul a new luminous long period delta Scuti star
Photometric observations of 21 Vul have revealed it to be a Delta Scuti variable star with one of the longest known periods, 0.227 d, among those variables. 21 Vul presented a short period amplitude variability of about 0.05 mag, and the log of its effective temperature was calculated to be 3.891. M...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1979 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/385601 |
| Acceso en línea: | http://hdl.handle.net/10261/385601 |
| Access Level: | acceso abierto |
| Palabra clave: | Delta Scuti Variable stars |
| Sumario: | Photometric observations of 21 Vul have revealed it to be a Delta Scuti variable star with one of the longest known periods, 0.227 d, among those variables. 21 Vul presented a short period amplitude variability of about 0.05 mag, and the log of its effective temperature was calculated to be 3.891. Moreover, its luminosity (absolute visual magnitude is higher than Mv = 0) suggests a luminosity class brighter than IV, and places it in the instability strip very close to the faintest Cepheids. |
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