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Five New δ Scuti Stars
We present high-resolution spectroscopy and precision photometry of fivenew, relatively bright δ Scuti stars. They were originally chosenas photometric comparison stars in our program of automated,high-precision photometry of solar-type stars and subsequentlyrecognized as new variable stars. We conducted follow-up spectroscopicand photometric observations to determine the properties of the starsand their types of variability. All five of the stars presented herebelong to the most common subgroup of low-amplitude, Population Iδ Scuti variables. One of the stars, HD 10502, is the thirdexample of a δ Scuti variable with composite broad and narrowspectroscopic line profiles suggesting the presence of a circumstellarshell or disk.
| Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
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Osservazione e dati astrometrici
| Costellazione: | Cigno |
| Ascensione retta: | 19h27m53.12s |
| Declinazione: | +33°22'26.3" |
| Magnitudine apparente: | 7.357 |
| Distanza: | 164.204 parsec |
| Moto proprio RA: | -15 |
| Moto proprio Dec: | -27.9 |
| B-T magnitude: | 7.669 |
| V-T magnitude: | 7.383 |
Cataloghi e designazioni:
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