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Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites
The Astronomical Journal, 156 (2018), 1; 12. https://doi.org/10.3847/1538-3881/aac38b
Rucinski, Slavek M.; Pigulski, Andrzej; Popowicz, Adam; Kuschnig, Rainer; Kozłowski, Szymon; Moffat, Anthony F. J.; Pavlovski, Krešimir; Handler, Gerald; Pablo, H.; Wade, G. A.; Weiss, Werner W.; Zwintz, Konstanze

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Rucinski, S. M., Pigulski, A., Popowicz, A., Kuschnig, R., Kozłowski, S., Moffat, A. F. J. ... Zwintz, K. (2018). Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites. The Astronomical Journal, 156. (1). doi: 10.3847/1538-3881/aac38b

Rucinski, Slavek M., et al. "Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites." The Astronomical Journal, vol. 156, br. 1, 2018. https://doi.org/10.3847/1538-3881/aac38b

Rucinski, Slavek M., Andrzej Pigulski, Adam Popowicz, Rainer Kuschnig, Szymon Kozłowski, Anthony F. J. Moffat, Krešimir Pavlovski, et al. "Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites." The Astronomical Journal 156, br. 1 (2018). https://doi.org/10.3847/1538-3881/aac38b

Rucinski, S. M., et al. (2018) 'Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites', The Astronomical Journal, 156(1). doi: 10.3847/1538-3881/aac38b

Rucinski SM, Pigulski A, Popowicz A, Kuschnig R, Kozłowski S, Moffat AFJ, i sur.. Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites. The Astronomical Journal [Internet]. 14.06.2018. [pristupljeno 04.12.2024.];156(1). doi: 10.3847/1538-3881/aac38b

S. M. Rucinski, et al., "Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites", The Astronomical Journal, vol. 156, br. 1, Lipanj 2018. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:595676. [Citirano: 04.12.2024.]

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Naslov (engleski)Light-curve Instabilities of β Lyrae Observed by the BRITE Satellites
AutorSlavek M. Rucinski
AutorAndrzej Pigulski
AutorAdam Popowicz
AutorRainer Kuschnig
AutorSzymon Kozłowski
AutorAnthony F. J. Moffat
AutorKrešimir Pavlovski
AutorGerald Handler
AutorH. Pablo
AutorG. A. Wade
AutorWerner W. Weiss
AutorKonstanze Zwintz
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
Photometric instabilities of β Lyrae (β Lyr) were observed in 2016 by two red-filter BRITE satellites over more than 10 revolutions of the binary, with ~100 minute sampling. Analysis of the time series shows that flares or fading events take place typically three to five times per binary orbit. The amplitudes of the disturbances (relative to the mean light curve, in units of the maximum out-of-eclipse light flux, f.u.) are characterized by a Gaussian distribution with σ = 0.0130 ± 0.0004 f.u. Most of the disturbances appear to be random, with a tendency to remain for one or a few orbital revolutions, sometimes changing from brightening to fading or the reverse. Phases just preceding the center of the deeper eclipse showed the most scatter while phases around the secondary eclipse were the quietest. This implies that the invisible companion is the most likely source of the instabilities. Wavelet transform analysis showed the domination of the variability scales at phase intervals 0.05–0.3 (0.65–4 days), with the shorter (longer) scales dominating in numbers (variability power) in this range. The series can be well described as a stochastic Gaussian process with the signal at short timescales showing a slightly stronger correlation than red noise. The signal decorrelation timescale, τ = (0.068 ± 0.018) in phase or (0.88 ± 0.23) days, appears to follow the same dependence on the accretor mass as that observed for active galactic nucleus and quasi-stellar object masses five to nine orders of magnitude larger than the β Lyr torus-hidden component.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaThe Astronomical Journal
Brojčani podacivol. 156, br. 1, 12
p-ISSN0004-6256
e-ISSN1538-3881
DOIhttps://doi.org/10.3847/1538-3881/aac38b
URN:NBNurn:nbn:hr:217:595676
Datum objave publikacije2018-06-14
ProjektŠifra: IP-2014-09-8656
Naziv (hrvatski): Zvijezde i prašina: struktura, sastav i interakcija
Naziv (engleski): Stars and dust: structure, composition and interaction
Kratica: STARDUST
Voditelj: Krešimir Pavlovski
Pravna nadležnost: Hrvatska
Financijer: Hrvatska zaklada za znanost
Linija financiranja: Research Projects
URL dokumentahttps://iopscience.iop.org/article/10.3847/1538-3881/aac38b
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Javna napomena© 2018. The American Astronomical Society. All rights reserved. Received 2018 March 26; revised 2018 May 2; accepted 2018 May 3; published 2018 June 14.
Datum i vrijeme pohrane2024-09-29 19:46:43