TESS observations of Cepheid stars: first light results
| العنوان: | TESS observations of Cepheid stars: first light results |
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| المؤلفون: | Vincenzo Ripepi, M. J. Kalaee, Nicolas Nardetto, James M. Nemec, Laszlo Szabados, László Molnár, Dogus Ozuyar, Emese Plachy, Marek Skarka, M. Ebadi, Roland Vanderspek, Bogumił Pilecki, Jørgen Christensen-Dalsgaard, J. Pascual-Granado, M. I. Jurkovic, George R. Ricker, Kosmas Gazeas, P. Mikołajczyk, Á. Sódor, Pál Szabó, Radosław Smolec, Róbert Szabó, Anupam Bhardwaj, Earl P. Bellinger, Amir Hasanzadeh, Henryka Netzel, Franz-Josef Hambsch, András Pál, A. Bódi, Jon M. Jenkins, József Benkő, Katrien Kolenberg, Richard I. Anderson, Pierre Kervella, Chow-Choong Ngeow, Hans Kjeldsen |
| المساهمون: | Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Côte d'Azur (UCA), National Research, Development and Innovation Office (Hungary), Hungarian Academy of Sciences, Ministry of Science and Technology (Taiwan), European Commission, European Research Council, Danish National Research Foundation, National Science Centre (Poland), Ministry of Education, Science and Technological Development (Serbia), Ministerio de Ciencia, Innovación y Universidades (España), Agence Nationale de la Recherche (France), European Cooperation in Science and Technology, Physics |
| المصدر: | Astrophysical Journal Supplement Astrophysical Journal Supplement, American Astronomical Society, 2020, 253 (1), pp.11. ⟨10.3847/1538-4365/abd4e3⟩ The astrophysical journal : supplement series Digital.CSIC: Repositorio Institucional del CSIC Consejo Superior de Investigaciones Científicas (CSIC) Digital.CSIC. Repositorio Institucional del CSIC instname |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Cepheid variable stars, Field (physics), Cepheid variable, Overtone, Stellar photometry, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Stellar pulsations, 7. Clean energy, 01 natural sciences, 0103 physical sciences, Modulation (music), Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Physics, Science & Technology, 010308 nuclear & particles physics, Mode (statistics), Astronomy and Astrophysics, First light, Light curve, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Stars, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Physical Sciences, Astrophysics::Earth and Planetary Astrophysics |
| الوصف: | Full list of authors: Plachy, E.; Pál, A.; Bódi, A.; Szabó, P.; Molnár, L.; Szabados, L.; Benkő, J. M.; Anderson, R. I.; Bellinger, E. P.; Bhardwaj, A.; Ebadi, M.; Gazeas, K.; Hambsch, F. -J.; Hasanzadeh, A.; Jurkovic, M. I.; Kalaee, M. J.; Kervella, P.; Kolenberg, K.; Mikołajczyk, P.; Nardetto, N. Nemec, J. M.; Netzel, H.; Ngeow, C. -C.; Ozuyar, D.; Pascual-Granado, J.; Pilecki, B.; Ripepi, V.; Skarka, M.; Smolec, R.; Sódor, Á.; Szabó, R.; Christensen-Dalsgaard, J.; Jenkins, J. M.; Kjeldsen, H.; Ricker, G. R.; Vanderspek, R. We present the first analysis of Cepheid stars observed by the TESS space mission in Sectors 1–5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone and two double-mode classical Cepheids, plus three type II and seven anomalous Cepheids. The targets were chosen from fields with different stellar densities, both from the Galactic field and from the Magellanic System. Three targets have 2 minutes cadence light curves available by the TESS Science Processing Operations Center: for the rest, we prepared custom light curves from the full-frame images with our own differential photometric FITSH pipeline. Our main goal was to explore the potential and the limitations of TESS concerning the various subtypes of Cepheids. We detected many low-amplitude features: weak modulation, period jitter, and timing variations due to light-time effect. We also report signs of nonradial modes and the first discovery of such a mode in an anomalous Cepheid, the overtone star XZ Cet, which we then confirmed with ground-based multicolor photometric measurements. We prepared a custom photometric solution to minimize saturation effects in the bright fundamental-mode classical Cepheid, β Dor with the lightkurve software, and we revealed strong evidence of cycle-to-cycle variations in the star. In several cases, however, fluctuations in the pulsation could not be distinguished from instrumental effects, such as contamination from nearby sources, which also varies between sectors. Finally, we discuss how precise light-curve shapes will be crucial not only for classification purposes but also to determine physical properties of these stars. © 2021. The American Astronomical Society. All rights reserved. The research leading to these results has been supported by the Hungarian National Research, Development and Innovation Office (NKFIH) grants KH_18 130405, K-125015, GINOP 2.3.2-15-2016-00033, and NN-129075, and the Lendulet LP2014-17 and LP2018-7/2020 grants of the Hungarian Academy of Sciences (HAS). The work reported on in this publication has been supported by the MW-Gaia COST Action (CA18104). Partial funding of the computational infrastructure and database servers were received from the grant KEP-7/2018 of the HAS. E.P. was supported by the Janos Bolyai Research Scholarship of the HAS. L.M. was supported by the Premium Postdoctoral Research Program of the HAS. C.C.N. thanks the funding from Ministry of Science and Technology (Taiwan) under the contract 107-2119-M-008014-MY2. Funding for the Stellar Astrophysics Centre is provided by The Danish National Research Foundation (grant agreement No. DNRF106). R.Sm. was supported by the National Science Center, Poland, Sonata BIS project 2018/30/E/ST9/00598. M.I.J. was supported by the Ministry of Education, Science and Technological Development (contract number 451-03-68/2020-14/200002) of Republic of Serbia. A.B. acknowledges a Gruber fellowship 2020 grant sponsored by the Gruber Foundation and the International Astronomical Union and is supported by the EACOA Fellowship Program under the umbrella of the East Asia Core Observatories Association, which consists of the Academia Sinica Institute of Astronomy and Astrophysics, the National Astronomical Observatory of Japan, the Korea Astronomy and Space Science Institute, and the National Astronomical Observatories of the Chinese Academy of Sciences. J.P.G. acknowledges financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award to the Instituto de Astrofisica de Andalucia (SEV-2017-0709) and from Spanish public funds for research under project ESP2017-87676-C5-5-R. P.M. acknowledges support from the NCN grant No. 2016/21/B/ST9/01126. M.S. acknowledges the financial support of the Operational Program Research, Development and Education-Project Postdoc@MUNI(No.CZ.02.2.69/0.0/0.0/16_027/0008360) and the MSMT Inter Transfer program LTT20015. P.K. and N.N. acknowledge the support of the French Agence Nationale de la Recherche (ANR), under grant ANR-15-CE31-0012-01 (project UnlockCepheids). The research leading to these results has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 695099). This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This paper includes data collected by the TESS mission. Funding for the TESS mission is provided by NASAs Science Mission directorate. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. |
| اللغة: | English |
| تدمد: | 2016-0003 0067-0049 1538-4365 |
| DOI: | 10.3847/1538-4365/abd4e3⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::428863b332ae007a228547dbbc6a2c68 https://hal.archives-ouvertes.fr/hal-03437264 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....428863b332ae007a228547dbbc6a2c68 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20160003 00670049 15384365 |
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| DOI: | 10.3847/1538-4365/abd4e3⟩ |