Synergy of Wide-Field Surveys - Space and Ground  Page description

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Details of project

  
Identifier
129249
Type K
Principal investigator Kovács, Géza
Title in Hungarian Nagylepteku Foldi es Urbeli Attekinto Programok Szinergiaja
Title in English Synergy of Wide-Field Surveys - Space and Ground
Keywords in Hungarian adat analizis, valtozocsillagok, extraszolaris bolygok
Keywords in English data analysis, variable stars, extrasolar planets
Discipline
Astronomy (Council of Physical Sciences)50 %
Ortelius classification: Astronomy
Astrophysics (Council of Physical Sciences)50 %
Panel Physics 1
Department or equivalent Konkoly Thege Miklós Astronomical Institute (Research Centre for Astronomy and Earth Sciences)
Participants Balázs, Lajos György
Jurcsik, Johanna
Karamiqucham, Behrooz
Nuspl, János
Szabados, László
Starting date 2018-09-01
Closing date 2023-11-30
Funding (in million HUF) 46.216
FTE (full time equivalent) 14.55
state running project





 

Final report

  
Results in Hungarian
A projekt az RR Lyraek es az exobolygok teruleten hozott uj eredmenyeket. A kutatasok mindket teruleten kulonbozo tipusu megfigyeleseket szintetizalnak, beleertve az ureszkozokkel vegzetteket is. RR Lyrae valtozok kapcsan: - Mas/korabbi vizsgalatokkal ellentetben, a periodikus amplitudo- es fazis-modulacio (a Blashko effektus) nagyon altalanos, es valoszinu, hogy minden RR Lyrae csillag mutatja ezt a jelenseeget (a Kepler K2 adatai alapjan). - Osszehasonlitottuk a Gaia harmadik adatkibocsatasa alapjan szamitott luminozitasokat a pulzacios/fejlodesi modellek alapjan kapottakkal. A rezidualok 2%-os szorasa a minta fenyesebbik reszen azt mutatja, hogy az egyezes meghokkentoen jo. - Megmutattuk, hogy az RR Lyraek kemiai osszetetelenek meghatarozasara jelenleg hasznalt modszer jelentos szisztematikus hibaval terhelt a gravitacio es a femgyakorisag kozotti eros korrelacio miatt. Exobolygok kapcsan: - Megmertuk ket forro Jupiter emisszivitasat a kozeli infravoros savban. A WASP-121b tekinteteben ma ez az egyetlen meres a 2 mikronos tartomanyban. - Uj, versenykepes szamitogepes programot (TRAN_K2) fejlesztettunk ki, amely kiszuri a szisztematikus hibakat es az esetleges fizikai okok miatti fluxusvaltozasokat, hogy ezek a zavaro tenyezok ne gatoljak a fedesi exobolygok kereseset.
Results in English
This project has led to new results in two fields: RR Lyraes and exoplanets. In both fields most of the studies synthesize various types of observations, including those acquired by space-based instruments. In the context of RR Lyrae stars: - Confronting other/earlier investigations, periodic amplitude- and phase-modulation (the Blazhko effect) is very common, and likely all RR Lyrae stars show this phenomenon (based on the data from the Kepler K2 mission). - We compared the luminosities derived from the parallaxes of the third data release by the Gaia satellite with those estimated from pulsation/evolutionary theories. With 2% residual scatter for the bright part of the sample, the agreement is stunningly good. - We pointed out that the current methodology in deriving chemical abundances for RR Lyrae stars suffer from significant systematic effects due to the strong correlation between the metallicity and gravity. In the context of extrasolar planets: - We measured the thermal emissivity of two Hot Jupiters in the near infrared. For WASP-121b this is the only measurement available at 2 microns today. - A new, highly competitive code TRAN_K2 was designed to search for transiting planets in the presence of systematics and stellar variability.
Full text https://www.otka-palyazat.hu/download.php?type=zarobeszamolo&projektid=129249
Decision
Yes





 

List of publications

  
Kovacs, Geza: Transit-period search from single-event space-based data: the role of wide-field surveys, Astronomy & Astrophysics, 625, A145 (11 pp), 2019
Kovacs, Geza ; Kovacs, Tamas: Secondary eclipse of the hot Jupiter WASP-121b at 2 microns, Astronomy & Astrophysics, 625, 80 (8 pp), 2019
Csornyei, Geza ; Szabados, Laszlo: AU Pegasi revisited: period evolution and orbital elements of a peculiar Type II Cepheid, Astrophysics and Space Science, 364, 151 (8 pp), 2019
Szabados, Laszlo: Selected new results on pulsating variable stars, Contrib. Astron. Obs. Skalnate Pleso 49, 171-182, 2019
Szabados, Laszlo: Selected new results on pulsating variable stars, Contrib. Astron. Obs. Skalnate Pleso 49, 171 (11 pp), 2019
Kovacs, Geza; Hartman, Joel D.; Bakos, Gáspár Á.: The hierarchical triple nature of the former red nova precursor candidate KIC 9832227, Astronomy and Astrophysics, 631, A126 (12 pp), 2019
Zhou, G.; Huang, C. X.; Bakos, G. Á.; Hartman, J. D.; Latham, David W.; Quinn, S. N.; Collins, K. A.; Winn, J. N.; Wong, I.; Kovács, G., and 61 more: Two New HATNet Hot Jupiters around A Stars and the First Glimpse at the Occurrence Rate of Hot Jupiters from TESS, Astronomical Journal, 158, 141 (24 pp), 2019
Nuspl, J.; Hajdu, T.; Hegedüs, T.: On some strange features in Kepler EB light curves, Contrib. Astron. Obs. Skalnate Pleso 50, 419 (2 pp), 2020
Jurcsik, J.: Blazhko-type fundamental-mode RR Lyrae stars in the globular cluster M3, Month. Not. Roy. Astron. Soc., 485, 5897 (16 pp), 2019
Tarczay-Nehéz, D.; Szabados, L.; Dencs, Z.: Cepheids Near and Far, "Stars and their Variability Observed from Space", Vienna, Aug. 19-23, 2019. Eds.: C. Neiner et al., p 115 (4 pp), 2020
Bakos, G. A.; Hartman, J. D.; Bhatti, W.; Csubry, Z.; Penev, K.; Bieryla, A.; Latham, D. W.; Quinn, S.; Buchhave, L. A.; Kovacs, G. ; Torres, Guillermo; 20 more authors: HAT-P-58b-HAT-P-64b: Seven Planets Transiting Bright Stars, Astronomical Journal, 162, 7 (31 pp), 2021
Kovacs, G.: On the Incidence Rate of Blazhko Stars, ASPC, 529, 51 (6pp), 2021
Kovacs, Geza: More planetary candidates from K2 Campaign 5 using TRAN_K2, Astronomy and Astrophysics, 643, A169 (18 pp), 2020
Jurcsik, J.; Hajdu, G.; Juhasz, A.: On the photometric metallicity of Oosterhoff-type I and II RRab stars, MNRAS, 505, 2468 (9 pp), 2021
Gergely Hajdu, Grzegorz Pietrzynski, Johanna Jurcsik, Marcio Catelan, Paulina Karczmarek, Bogumil Pilecki, Igor Soszynski, Andrzej Udalski, and Ian B. Thompson: Studies of RR Lyrae Variables in Binary Systems. I. Evidence of a Trimodal Companion Mass Distribution, ApJ, 915, 50 (16 pp), 2021
Jurcsik, J.; Szabo, P.; Prudil, Z.; Skarka, M.; Hajdu, G.: On the Phase-Modulation Properties of Galactic Bulge RRab Stars, ASPC, 529, 329 (3 pp), 2021
Jurcsik, J.; Sodor, A.; Bognar, Zs.: Photometric and Spectroscopic Investigation of the Blazhko Star DR And: Inherent Limits of the Applicability of the Baade-Wesselink Method on Blazhko Star, ASPC, 529, 327 (2 pp), 2021
Nuspl, J.: RR Lyrae Stars of M3 in Optical and Swift/UVOT Near-UV Observations, ASPC, 529, 336 (2 pp), 2021
Kovacs, G.; Dekany, I.; Karamiqucham, B.; Chen, G.; Zhou, G.; Rabus, M.; Kovacs, T.: Near-infrared and optical emission of WASP-5 b, Astronomy and Astrophysics, 664, A47 (13 pp), 2022
Kovacs, Geza; Karamiqucham, Behrooz: Bright single-mode RR Lyrae stars: Matching Gaia EDR3 with pulsation and evolutionary models, Astronomy and Astrophysics, 654, L4 (5 pp), 2021
Kovacs, Geza; Karamiqucham, Behrooz: Probing galactic double-mode RR Lyrae stars against Gaia EDR3, Astronomy and Astrophysics, 653, A61 (14 pp), 2021
Csornyei, G.; Szabados, L.; Molnar, L.; Cseh, B.; Egei, N.; Kalup, Cs; Kecskemethy, V.; Konyves-Toth, R.; Sarneczky, K.; Szakats, R.: Study of changes in the pulsation period of 148 Galactic Cepheid variables, Month. Not. Roy. Astr. Soc., 511, 2125, 2022
Kovacs, Geza; Jurcsik, Johanna: Toward more accurate RR Lyrae metallicities, Astronomy and Astrophysics (upcoming paper of 10 pages - see link), 2023
Healy, Brian F.; McCullough, P. R.; Schlaufman, Kevin C.; Kovacs, Geza: A Study of Stellar Spins in 15 Open Clusters, Astrophysical Journal, 944, 39 (26 pp), 2023
Jurcsik, Johanna; Hajdu, Gergely: Photometric metallicities of fundamental-mode RR Lyr stars from Gaia G band photometry of globular-cluster variables, Monthly Notices Roy. Astron. Soc., 525, 3486 (13 pp), 2023
Jurcsik, Johanna; Juhasz, Aron: RRab variables with identical light-curve shapes at different pulsation periods, Monthly Not. Roy. Astron. Soc., 517, 1907 (12 pp), 2022
Kovacs, Gabor, B.; Nuspl, Janos; Szabo, Robert: Temperature dependent convective parameters for RRc 1D-models, Monthly Notices Roy. Astron. Soc., upcoming paper, (6 pp - see link), 2023
Kovacs, Gabor, B.; Nuspl, Janos; Szabo, Robert: Calibration of the convective parameters in stellar pulsation hydrocodes, Monthly Notices Roy. Astron. Soc., 521, 4878 (pp 18), 2023
Kovacs, Geza; Jurcsik, Johanna: Toward more accurate RR Lyrae metallicities, Astronomy and Astrophysics, 678, 138, 2023
Cseh, B. et al.: Orbit determination for the binary Cepheid V1344 Aql, Astronomy & Astrophysics (in press), 2023




 

Events of the project

  
2020-02-20 17:50:34
Résztvevők változása
2018-10-17 14:17:22
Résztvevők változása



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