Phenomenological modelling of eclipsing system light curves

MIKULÁŠEK, Zdeněk. Phenomenological modelling of eclipsing system light curves. ASTRONOMY & ASTROPHYSICS. LES ULIS CEDEX A: EDP SCIENCES S A, 2015, roč. 584, december, s. "nestrankovano", 13 s. ISSN 1432-0746. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201425244.

Základní údaje

• Originální název: Phenomenological modelling of eclipsing system light curves
• Název česky: Fenomenologické modelování světelných křivek zákrytových soustav
• Autoři: MIKULÁŠEK, Zdeněk (203 Česká republika, garant, domácí).
• Vydání: ASTRONOMY & ASTROPHYSICS, LES ULIS CEDEX A, EDP SCIENCES S A, 2015, 1432-0746.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 10308 Astronomy
• Stát vydavatele: Francie
• Utajení: není předmětem státního či obchodního tajemství
• Impakt faktor: Impact factor: 5.185
• Kód RIV: RIV/00216224:14310/15:00081637
• Organizační jednotka: Přírodovědecká fakulta
• Doi: http://dx.doi.org/10.1051/0004-6361/201425244
• UT WoS: 000366936800008
• Klíčová slova anglicky: binaries: eclipsing; methods: miscellaneous; planets and satellites: general
• Štítky: AKR, rivok, XY Boo
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Context. The observed light curves of most eclipsing binaries and stars with transiting planets can be described well and interpreted by current advanced physical models that also allow for determining many of the physical parameters of eclipsing systems. However, for several common practical tasks, there is no need to know the detailed physics of a variable star, but only the shapes of their light curves or other phase curves. Aims. We present a set of phenomenological models for the light curves of eclipsing systems. Methods. We express the observed light curves of eclipsing binaries and stars, which are transited by their exoplanets orbiting in circular trajectories, by a sum of special, analytical, few-parameter functions that enable fitting their light curves with an accuracy of better than 1%. The proposed set of phenomenological models of eclipsing variable light curves were then tested on several real systems. For XY Bootis, we also give a detailed comparison of the results obtained using our phenomenological modelling with those found using available physical models. Results. We demonstrate that the proposed phenomenological models of transiting exoplanet and eclipsing binary light curves applied to ground-based photometric observations yield results compatible with those obtained by applying more complex physical models. Conclusions. The suggested phenomenological modelling appears useful for solving a number of common tasks in the field of eclipsing variable research.

Anotace česky

Context. The observed light curves of most eclipsing binaries and stars with transiting planets can be described well and interpreted by current advanced physical models that also allow for determining many of the physical parameters of eclipsing systems. However, for several common practical tasks, there is no need to know the detailed physics of a variable star, but only the shapes of their light curves or other phase curves. Aims. We present a set of phenomenological models for the light curves of eclipsing systems. Methods. We express the observed light curves of eclipsing binaries and stars, which are transited by their exoplanets orbiting in circular trajectories, by a sum of special, analytical, few-parameter functions that enable fitting their light curves with an accuracy of better than 1%. The proposed set of phenomenological models of eclipsing variable light curves were then tested on several real systems. For XY Bootis, we also give a detailed comparison of the results obtained using our phenomenological modelling with those found using available physical models. Results. We demonstrate that the proposed phenomenological models of transiting exoplanet and eclipsing binary light curves applied to ground-based photometric observations yield results compatible with those obtained by applying more complex physical models. Conclusions. The suggested phenomenological modelling appears useful for solving a number of common tasks in the field of eclipsing variable research.

Návaznosti

• GA13-10589S, projekt VaV: Název: Ztráta hmoty horkých hmotných hvězd

Investor: Grantová agentura ČR, Ztráta hmoty horkých hmotných hvězd

• LH12175, projekt VaV: Název: Studium vybraných téměř kontaktních dvojhvězd (Akronym: NCBS)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Studium vybraných téměř kontaktních zákrytových dvojhvězd