V 1162 Ori: A multiperiodic delta Scuti star with variable period and amplitude

Basit Öğe Kaydı
dc.contributor.authorArentoft, T
dc.contributor.authorSterken, C
dc.contributor.authorHandler, G
dc.contributor.authorFreyhammer, LM
dc.contributor.authorBruch, A
dc.contributor.authorNiarchos, P
dc.contributor.authorGazeas, K
dc.contributor.authorManimanis, V
dc.contributor.authorVan Cauteren, P
dc.contributor.authorPoretti, E
dc.contributor.authorDawson, DW
dc.contributor.authorLiu, ZL
dc.contributor.authorZhou, AY
dc.contributor.authorDu, BT
dc.contributor.authorShobbrock, RR
dc.contributor.authorGarrido, R
dc.contributor.authorFried, R
dc.contributor.authorAkan, MC
dc.contributor.authorIbanoglu, C
dc.contributor.authorEvren, S
dc.contributor.authorTas, G
dc.contributor.authorJohnson, D
dc.contributor.authorBlake, C
dc.contributor.authorKurtz, DW
dc.date.accessioned2019-10-27T18:19:36Z
dc.date.available2019-10-27T18:19:36Z
dc.date.issued2001
dc.departmentEge Üniversitesien_US
dc.description.abstractWe present the results of multisite observations of the delta Scuti star V1162 Ori. The observations were done in the period October 1999 - May 2000, when 18 telescopes at 15 observatories were used to collect 253 light extrema during a total of 290 hours of time-series observations. The purpose of the observations was to investigate amplitude and period variability previously observed in this star, and to search for low-amplitude frequencies. We detect, apart from the main frequency and its two first harmonics, four additional frequencies in the light curves, all with low amplitudes (1-3 mmag). Combining the present data set with data obtained in 1998-99 at ESO confirms the new frequencies and reveals the probable presence of yet another pulsational frequency. All five low-amplitude frequencies are statistically significant in the data, but at least one of them (f(5)) suffers from uncertainty due to aliasing. Using colour photometry we find evidence for a radial main frequency (f(1)), while most or all low-amplitude frequencies are likely non-radial. We show that the main frequency of V1162 Ori has variable amplitude and period/phase, the latter is also displayed in the O-C diagram from light extrema. The amplitude variability in our data is cyclic with a period of 282 d and a range of nearly 20 mmag, but earlier amplitude values quoted in the literature cannot be explained by this cyclic variation. O-C analysis including data from the literature show that the period of V1162 Ori displays a linear period change as well as sudden or cyclic variations on a time scale similar to that of the amplitude variations.en_US
dc.identifier.doi10.1051/0004-6361:20010794
dc.identifier.endpage1070en_US
dc.identifier.issn1432-0746
dc.identifier.issn1432-0746en_US
dc.identifier.issue3en_US
dc.identifier.startpage1056en_US
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20010794
dc.identifier.urihttps://hdl.handle.net/11454/35698
dc.identifier.volume374en_US
dc.identifier.wosWOS:000170215900028en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherEdp Sciences S Aen_US
dc.relation.ispartofAstronomy & Astrophysicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectstars : variables : delta Scutien_US
dc.subjectstars : individual : V 1162 Orionisen_US
dc.subjecttechniques : photometricen_US
dc.subjectmethods : data analysisen_US
dc.titleV 1162 Ori: A multiperiodic delta Scuti star with variable period and amplitudeen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu