PI: Róbert Szabó
In this project we aim at studying recently discovered nonlinear dynamical phenomena of classical pulsating variable stars. This project is enabled by the achievements of the latest space photometric technology. We investigate resonances, modulation and mode interaction of RR Lyrae stars and Cepheids – all discovered by our group recently, the origin of gamma Doradus – delta Scuti hybrids, as well as effects of binarity on pulsation. For our work we use ultra-precise and continuously sampled space photometric data from the Kepler (K2) and MOST space telescopes – stemming from our approved telescope time applications, state-of-the-art time-frequency and chaos detection methods, the Florida-Budapest hydrodynamical pulsation code and the amplitude equation formalism. We expect a better understanding of the new phenomena and the evolution of pulsating variable stars, as well as the exploration of these systematic effects on the calibration of the cosmic distance scale. The principal investigator has been the leader of the Cepheid and RR Lyrae Working Group in the Kepler Asteroseismic Science Consortium. This proposal enables us to play a similar role in NASA's TESS exoplanet-hunter mission, which is scheduled to launch in 2018. The research is backed up by an outstanding team of scientists: we exploit our expertise in space photometry and spectroscopy, our leading role in the Kepler mission, and the team's decades-long experience in numerical modelling of stellar pulsation. This synergy places our research in the forefront of present-day astrophysical studies.
Project no. 115709 has been implemented with the support provided from the National Research, Development and Innovation Fund of Hungary, financed under the K_16 funding scheme.
+ Róbert Szabó - PI
+ László L. Kiss
+ József M. Benkő
+ Emese Plachy
+ Marek Skarka
+ Zsófia Bognár
+ Ádám Sódor
+ László Szabados
+ Zoltán Kolláth
+ Áron Juhász
+ Ottó Hanyecz
+ Attila Bódi
+ Gyula M. Szabó
+ Aliz Derekas
+ Mónika Jurkovic
Former participants: + László Molnár
+ Péter Klagyivik
+ Gergely Dálya
To Be Added Later
41. L. Molnár, A. Pál, K. Sárneczky, R. Szabó, ..., Gy. M. Szabó ..., O. Hanyecz, ...,L Kiss:
Main-belt asteroids in the K2 Uranus field
ApJS, submitted, 2017, arXiv:1706.0605640. A. Farkas-Takács, ..., L. Molnár, Gy. M. Szabó, O. Hanyecz, K. Sárneczky, R. Szabó, ..., L. Kiss:
Properties of the irregular satellite system around Uranus inferred from K2, Herschel and Spitzer observations
AJ, accepted, 2017, arXiv:1706.0683739. J. A. Drury, S. J. Murphy, A. Derekas, Á. Sódor, D. Stello, C. A. Kuehn, T. R. Bedding, Zs. Bognár, ..., L. Molnár:
Large amplitude change in spot-induced rotational modulation of the Kepler Ap star KIC 2569073
MNRAS, accepted, 2017, arXiv:1707.0578838. The Gaia collaboration, ..., L. Szabados, ..., L. Molnár, ..., E. Plachy, et al.:
Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars
A&A, accepted, 2017, arXiv:1705.0068837. M. Groenewegen, M. Jurkovic:
The period-luminosity and period-radius relations of Type II and anomalous Cepheids in the Large and Small Magellanic Clouds
A&A, 604, A29, 201736. M. Groenewegen, M. Jurkovic:
Luminosities and infrared excess in Type II and anomalous Cepheids in the Large and Small Magellanic Clouds
A&A, 603, A70, 201735. V. Dobos, R. Heller, E. L. Turner:
The Effect of Multiple Heat Sources on Exomoon Habitable Zones
A&A, 601, A91, 201734. The Gaia collaboration, ..., L. Molnár, ..., E. Plachy, ..., L. Szabados et al.:
Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects
A&A, 601, A19, 201733. J. Jurcsik, P. Smitola, G. Hajdu, Á. Sódor, J. Nuspl, K. Kolenberg, et al.:
Photometric and radial-velocity time-series of RR Lyrae stars in M3: analysis of single-mode variables
MNRAS, 468, 1317, 201732. P. Kervella, B. Trahin, H. E. Bond, A. Gallenne, L. Szabados, et al.:
Observational calibration of the projection factor of Cepheids - III. The long-period Galactic Cepheid RS Puppis
A&A, 600, A127, 201731. L. Molnár, A. Derekas, R. Szabó, J. M. Matthews, C. Cameron, et al.:
V473 Lyr, a modulated, period-doubled Cepheid, and U TrA, a double-mode Cepheid observed by MOST
MNRAS, 466, 4009, 201730. Z. Prudil, M. Skarka:
Blazhko effect in the Galactic bulge fundamental mode RR Lyrae stars I: Incidence rate and differences between modulated and non-modulated stars
MNRAS, 466, 2602, 201729. Gy. M. Szabó, A. Pál, Cs. Kiss, L. L. Kiss, L. Molnár, O. Hanyecz, E. Plachy, K. Sárneczky, R. Szabó:
The heart of the swarm: K2 photometry and rotational characteristics of 56 Jovian Trojan asteroids
A&A, 599, A44, 201728. Z. Prudil, R. Smolec, M. Skarka, H. Netzel:
Peculiar double-periodic pulsation in RR Lyrae stars of the OGLE collection – II. Short-period stars with a dominant radial fundamental mode
MNRAS, 465, 4074, 201727. Á. Sódor, M. Skarka, J. Liška, Zs. Bognár:
KIC 2831097 - a 2-yr-orbital-period RR Lyrae binary candidate
MNRAS, 465, L1, 201726. A. Derekas, E. Plachy, L. Molnár, Á. Sódor, J. M. Benkő, L. Szabados, Zs. Bognár, B. Csák, Gy. M. Szabó, R. Szabó, A. Pál:
The Kepler Cepheid V1154 Cyg revisited: light curve modulation and detection of granulation
MNRAS, 464, 1553, 201725. M. Hrudková, A. Hatzes, R. Karjalainen, ..., Á. Sódor, et al.:
The discovery of a planetary candidate around the evolved low-mass Kepler giant star HD 175370
MNRAS, 464, 1018, 201724. R. Szabó, A. Pál, K. Sárneczky, Gy. M. Szabó, L. Molnár, L. L. Kiss, O. Hanyecz, E. Plachy, Cs. Kiss :
Uninterrupted optical light curves of main-belt asteroids from the K2 Mission
A&A, 596, A40, 201623. The Gaia collaboration, ..., L. Molnár, ..., E. Plachy, ..., L. Szabados et al.:
Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
A&A, 595, A2, 201622. The Gaia collaboration, ..., L. Molnár, ..., E. Plachy, ..., L. Szabados et al.:
The Gaia mission
A&A, 595, A1, 201621. M. Skarka, P. Cagaš:
CzeV293 and CzeV581-Two new high-amplitude double-mode delta Scuti stars
NewA, 46, 85, 201620. M. Skarka, J. Liška, R. F. Auer, Z. Prudil, A. Juráňová, Á. Sódor:
The SERMON project: 48 new field Blazhko stars and an investigation of modulation-period distribution
A&A, 592, A144, 201619. V. Dobos, Á. Kereszturi, A. Pál, L. L. Kiss:
Possibility for albedo estimation of exomoons: Why should we care about M dwarfs?
A&A, 592, A139, 201618. J. Liška, M. Skarka, Z. Mikulášek, M. Zejda, M. Chrastina:
New analysis of the light time effect in TU Ursae Majoris
A&A, 589, A94, 201617. J. Breitfelder, A. Mérand, P. Kervella, A. Gallenne, L. Szabados et al.:
Observational calibration of the projection factor of Cepheids. II. Application to nine Cepheids with HST/FGS parallax measurements
A&A, 587, A117, 201616. M. Paparó, J. M. Benkő, M. Hareter, J. Guzik:
Unexpected Series of Regular Frequency Spacing of delta Scuti Stars in the Non-asymptotic Regime. II. Sample-Echelle Diagrams and Rotation
ApJS, 224, 41, 201615. M. Paparó, J. M. Benkő, M. Hareter, J. Guzik:
Unexpected Series of Regular Frequency Spacing of delta Scuti Stars in the Non-asymptotic Regime. I. The Methodology
ApJ, 822, 100, 201614. J. M. Benkő, R. Szabó, A. Derekas, Á. Sódor:
Finest light curve details, physical parameters, and period fluctuations of CoRoT RR Lyrae stars
MNRAS, 463, 1769, 201613. S. Rappaport, H. Lehmann, B. Kalomeni, Á. Sódor, et al.:
A quintuple star system containing two eclipsing binaries
MNRAS, 462, 1812, 201612. Zs. Bognár, M. Paparó, L. Molnár, P. I. Pápics, E. Plachy, E. Verebélyi, Á. Sódor:
G 207-9 and LP 133-144: light-curve analysis and asteroseismology of two ZZ Ceti stars
MNRAS, 461, 4059, 201611. R. Smolec, Z. Prudil, M. Skarka, K. Bakowska:
Peculiar double-periodic pulsation in RR Lyrae stars of the OGLE collection - I. Long-period stars with dominant radial fundamental mode
MNRAS, 461, 2934, 201610. J. Liška, M. Skarka, M. Zejda, Z. Mikulášek, S. N. de Villiers:
Cyclic variations in O-C diagrams of field RR Lyrae stars as a result of LiTE
MNRAS, 459, 4360, 20169. A. Pál, Cs. Kiss, T. G. Müller, L. Molnár, R. Szabó, Gy. M. Szabó, K. Sárneczky, L. L. Kiss:
Large size and slow rotation of the trans-Neptunian object (225088) 2007 OR10 discovered from Herschel and K2 observations
AJ, 151, 117, 20168. B. Kirk, K. Conroy, A. Prša, M. Abdul-Masih, ..., A. Derekas et al.:
Kepler Eclipsing Binary Stars. VII. The Catalog of Eclipsing Binaries Found in the Entire Kepler Data Set
AJ, 151, 68, 20167. T. S. Boyajian, D. M. LaCourse, S. A. Rappaport, ..., B. Csák ..., J. Kovács, ..., Gy. M., Szabó, R. Szabó et al.:
Planet Hunters X. KIC 8462852 - Where's the flux?
MNRAS, 457, 3988, 20166. D. Forgan, V. Dobos:
Exomoon climate models with the carbonate-silicate cycle and viscoelastic tidal heating
MNRAS, 457, 1233, 20165. Cs. Kiss, A. Pál, A. I. Farkas-Takács, Gy. M. Szabó, R. Szabó, L. L. Kiss, L. Molnár, et al.:
Nereid from space: Rotation, size and shape analysis from Kepler/K2, Herschel and Spitzer observations
MNRAS, 457, 2908, 20164. E. Poretti, J. F. Le Borgne, M. Rainer, A. Baglin, J. M. Benkő, et al.:
CoRoT space photometry of seven Cepheids
MNRAS, 454, 849, 20153. P. De Cat, J. N. Fu, A. B. Ren, X. H. Yang, ..., L. Kiss, ..., R. Szabó et al.:
LAMOST observations in the Kepler field. I. Database of low-resolution spectra
ApJS, 220, 19, 20152. L. Molnár, A. Pál, E. Plachy, V. Ripepi, M. I. Moretti, R. Szabó, L. Kiss:
Pushing the limits, episode 2: K2 observations of extragalactic RR Lyrae stars in the dwarf galaxy Leo IV
ApJ, 812, 2, 20151. J. M. Benkő, R. Szabó,:
The Blazhko effect and additional excited modes in RR Lyrae stars
ApJL, 809, L19, 2015