The field high-amplitude SX Phe variable BL Cam: results from a multisite photometric campaign

Fauvaud, S.; Sareyan, J.; Ribas, I.; Rodriguez, E.; Lampens, P.; Klingenberg, G.; Farrell, J.; Fumagalli, F.; Simonetti, J.; Wolf, M.; Santacana, G.; Zhou, A.; Michel, R.; Fox-Machado, L.; Alvarez, M.; Nava-Vega, A.; Lopez-Gonzalez, M.; Casanova, V.; Aceituno, F.; Scheggia, I.; Rives, J.; Hintz, E.; Van Cauteren, P.; Helvaci, MUSTAFA; Yesilyaprak, C.; Graham, K.; Kral, L.; Kocian, R.; Kucakova, H.; Fauvaud, M.; Granslo, B.; Michelet, J.; Nicholson, M.; Vugnon, J.; Kotkova, L.; Truparova, K.; Ulusoy, C.; Yasarsoy, B.; Avdibegovic, A.; Blazek, M.; Kliner, J.; Zasche, P.; Bartosikova, S.; Vilasek, M.; Trondal, O.; Van Den Abbeel, F.; Behrend, R.; Wuecher, H.

doi:10.1051/0004-6361/201014243

The field high-amplitude SX Phe variable BL Cam: results from a multisite photometric campaign

Atıf İçin Kopyala

Fauvaud S., Sareyan J. -., Ribas I., Rodriguez E., Lampens P., Klingenberg G., ...Daha Fazla

ASTRONOMY & ASTROPHYSICS, cilt.515, 2010 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 515
Basım Tarihi: 2010
Doi Numarası: 10.1051/0004-6361/201014243
Dergi Adı: ASTRONOMY & ASTROPHYSICS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Anahtar Kelimeler: stars: variables: delta Scuti, stars: individual: BL Camelopardalis, stars: oscillations, binaries: general, techniques: photometric, LONG-TERM VARIABILITY, DELTA-SCUTI STARS, STELLAR EVOLUTION, PHOENICIS STARS, DWARF CEPHEIDS, PERIOD CHANGES, CAMELOPARDALIS, STRAGGLERS, PLANETS, TRIPLE
Akdeniz Üniversitesi Adresli: Evet

Özet

Context. Short-period high-amplitude pulsating stars of Population I (delta Sct stars) and II (SX Phe variables) exist in the lower part of the classical (Cepheid) instability strip. Most of them have very simple pulsational behaviours, only one or two radial modes being excited. Nevertheless, BL Cam is a unique object among them, being an extreme metal-deficient field high-amplitude SX Phe variable with a large number of frequencies. Based on a frequency analysis, a pulsational interpretation was previously given.