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Kapcsolat
Large amplitude change in spot-induced rotational modulation of the Kepler Ap star KIC 2569073 |
Tartalom: | http://real.mtak.hu/63781/ |
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Archívum: | MTA Könyvtár |
Gyűjtemény: |
Status = Published
Type = Article |
Cím: |
Large amplitude change in spot-induced rotational modulation of the Kepler Ap star KIC 2569073
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Létrehozó: |
Drury, Jason A.
Murphy, Simon J.
Derekas, Aliz
SĂłdor, ĂdĂĄm
Stello, Dennis
Kuehn, Charles A.
Bedding, Timothy R.
BognĂĄr, ZsĂłfia
Szigeti, LĂĄszlĂł
SzakĂĄts, RĂłbert
SĂĄrneczky, KrisztiĂĄn
MolnĂĄr, LĂĄszlĂł
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Kiadó: |
Oxford University Press (OUP)
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Dátum: |
2017-07-13
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Téma: |
QB Astronomy, Astrophysics / csillagĂĄszat, asztrofizika
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Tartalmi leírás: |
An investigation of the 200 Ă 200 pixel 'superstamp' images of the centres of the open clusters NGC 6791 and NGC 6819 allows for the identification and study of many variable stars that were not included in the Kepler target list. KIC 2569073 (V=14.22), is a particularly interesting variable Ap star that we discovered in the NGC 6791 superstamp. With a rotational period of 14.67 days and 0.034-mag variability, it has one of the largest peak-to-peak variations of any known Ap star. Colour photometry reveals an anti-phase correlation between the B band, and the V, R and I bands. This Ap star is a rotational variable, also known as an Îą2 CVn, star, and is one of only a handful of Ap stars observed by Kepler. While no change in spot period or amplitude is observed within the 4-year Kepler timeseries, the amplitude shows a large increase compared to ground-based photometry obtained two decades ago.
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Nyelv: |
magyar
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Típus: |
Article
PeerReviewed
info:eu-repo/semantics/article
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Formátum: |
text
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Azonosító: |
Drury, Jason A. and Murphy, Simon J. and Derekas, Aliz and SĂłdor, ĂdĂĄm and Stello, Dennis and Kuehn, Charles A. and Bedding, Timothy R. and BognĂĄr, ZsĂłfia and Szigeti, LĂĄszlĂł and SzakĂĄts, RĂłbert and SĂĄrneczky, KrisztiĂĄn and MolnĂĄr, LĂĄszlĂł (2017) Large amplitude change in spot-induced rotational modulation of the Kepler Ap star KIC 2569073. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 471 (3). pp. 3193-3199. ISSN 0035-8711
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Kapcsolat: |
https://doi.org/10.1093/mnras/stx1722
doi:10.1093/mnras/stx1722
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