<i>TESS</i> Cycle 2 observations of roAp stars with 2-min cadence data-Reference-Cited by-同舟云学术

TESS Cycle 2 observations of roAp stars with 2-min cadence data

Published:2023-12-08 Issue:4 Volume:527 Page:9548-9580
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Holdsworth D L¹²^ORCID,Cunha M S³^ORCID,Lares-Martiz M⁴^ORCID,Kurtz D W⁵¹^ORCID,Antoci V⁶,Barceló Forteza S⁷,De Cat P⁸^ORCID,Derekas A⁹¹⁰¹¹,Kayhan C¹²^ORCID,Ozuyar D¹³,Skarka M¹⁴¹⁵,Hey D R¹⁶,Shi F¹⁷¹⁸^ORCID,Bowman D M¹⁹²⁰^ORCID,Kobzar O²¹,Ayala Gómez A²²,Bognár Zs²³,Buzasi D L²⁴,Ebadi M²⁵,Fox-Machado L²⁶,García Hernández A²⁷^ORCID,Ghasemi H²⁸^ORCID,Guzik J A²⁹,Handberg R³⁰^ORCID,Handler G³¹,Hasanzadeh A³²,Jayaraman R³³,Khalack V²¹,Kochukhov O³⁴^ORCID,Lovekin C C³⁵,Mikołajczyk P³⁶³⁷^ORCID,Mkrtichian D³⁸^ORCID,Murphy S J³⁹^ORCID,Niemczura E³⁶^ORCID,Olafsson B G¹,Pascual-Granado J⁴⁰^ORCID,Paunzen E⁴¹^ORCID,Posiłek N³⁶^ORCID,Ramón-Ballesta A⁴²,Safari H⁴³^ORCID,Samadi-Ghadim A⁴⁴,Smalley B⁴⁵^ORCID,Sódor Á²³,Stateva I⁴⁶,Suárez J C⁴⁷^ORCID,Szabó R²³⁴⁸^ORCID,Wu T⁴⁹⁵⁰⁵¹⁵²⁵³⁵⁴^ORCID,Ziaali E⁵⁵^ORCID,Zong W⁵⁶⁵⁷,Seager S⁵⁸⁵⁹⁶⁰

Affiliation:

1. Jeremiah Horrocks Institute, University of Central Lancashire , Preston PR1 2HE , UK

2. South African Astronomical Observatory , PO Box 9, Observatory 7935, Cape Town , South Africa

3. Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto CAUP , Rua das Estrelas, PT4150-762 Porto , Portugal

4. Stellar Variability Group, Institute of Astrophysics of Andalusia, Department of Stellar Physics , IAA-CSIC, 18008 Granada , Spain

5. Centre for Space Research, North-West University , Mahikeng 2745 , South Africa

6. National Space Institute, Technical University of Denmark , Elektrovej, DK-2800 Kgs. Lyngby , Denmark

7. Física Teórica y del Cosmos Dept., Universidad de Granada (UGR) , 18071 Granada , Spain

8. Royal Observatory of Belgium , Ringlaan 3, B-1180 Brussels , Belgium

9. ELTE Eötvös Loránd University, Gothard Astrophysical Observatory , Szombathely, Szent Imre h. u. 112., H-9700 , Hungary

10. MTA-ELTE Lendület “Momentum” Milky Way Research Group , Szent Imre H. st. 112, 9700 Szombathely , Hungary

11. HUN-REN?SZTE Stellar Astrophysics Research Group , H-6500 Baja, Szegedi út, Kt. 766 , Hungary

12. Department of Astronomy and Space Sciences, Science Faculty, Erciyes University , 38030 Melikgazi, Kayseri , Türkiye

13. Ankara University, Faculty of Science, Department of Astronomy and Space Sciences , 06100, Tandogan – Ankara , Turkey

14. Astronomical Institute of the Czech Academy of Sciences , Fričova 298, CZ-25165 Ondřejov , Czech Republic

15. Department of Theoretical Physics and Astrophysics, Masaryk University , Kotlářská 2, CZ-61137 Brno , Czech Republic

16. Institute for Astronomy, University of Hawaií , Honolulu, HI 96822 , USA

17. Department of Astronomy, Peking University , Beijing 100871 , China

18. The Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871 , China

19. School of Mathematics, Statistics and Physics, Newcastle University , Newcastle upon Tyne, NE1 7RU , UK

20. Institute of Astronomy , KU Leuven, 3001 Leuven , Belgium

21. Département de Physique et dÁstronomie, Université de Moncton , Moncton, N.B., E1A 3E9 , Canada

22. Virtualmech R&D division. Parque Empresarial Nuevo Torneo , Arquitectura 1, 41015 Sevilla , Spain

23. Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences, MTA Centre of Excellence , H-1121 Budapest, Konkoly Thege Miklósút 15–17 , Hungary

24. Department of Chemistry and Physics, Florida Gulf Coast University , 10501 FGCU Blvd S, Fort Myers, FL 33965 , USA

25. Institute of Geophysics, University of Tehran , Tehran , Iran

26. Instituto de Astronomía–Universidad Nacional Autónoma de México , Ensenada, BC 22860 , Mexico

27. Theoretical Physics and the Cosmos, University of Granada , E-18071 Granada , Spain

28. Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS) , Zanjan 45137–66731 , Iran

29. XTD-NTA, MS T-082, Los Alamos National Laboratory , Los Alamos, NM 87545 , USA

30. Stellar Astrophysics Centre, Aarhus University , DK-8000 Aarhus C , Denmark

31. Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences , ul. Bartycka 18, 00–716, Warszawa , Poland

32. Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick , Coventry CV4 7AL , UK

33. Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Ave, Cambridge, MA 02139 , USA

34. Department of Physics and Astronomy, Uppsala University , Box 516, SE-75120 Uppsala , Sweden

35. Mount Allison University , 69 York Str, Sackville, NB , Canada

36. Instytut Astronnomiczny, Uniwersytet Wrocławski , Kopernika 11, PL-51–622 Wrocław , Poland

37. Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, PL-00–478 Warszawa , Poland

38. National Astronomical Research Institute of Thailand , 260 Moo 4, T. Donkaew, A. Maerim, Chiang Mai 50180 , Thailand

39. Centre for Astrophysics, University of Southern Queensland , Toowoomba, QLD 4350 , Australia

40. Instituto de Astrofísica de Andalucía – CSIC , E-18008 Granada , Spain

41. Department of Theoretical Physics and Astrophysics, Masaryk University , Kotlářská 2, 611 37 Brno , Czech Republic

42. Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía S/N , E-18008 Granada , Spain

43. Department of Physics, Faculty of Science, University of Zanjan , Zanjan 45195-313 , Iran

44. Max-Planck-Institut für Sonnensystemforschung , D-37077 Göttingen , Germany

45. Astrophysics Group, Keele University , Keele Rd, Keele ST5 5BG , UK

46. Institute of Astronomy and NAO, Bulgarian Academy of Sciences , blvd.Tsarigradsko chaussee 72, Sofia , Bulgaria

47. Fìsica Teòrica y del Cosmos Dept., Universidad de Granada , Campus de Fuentenueva s/n, E-18071 Granada , Spain

48. ELTE Eötvös Loránd University, Institute of Physics , H-1117, Pázmány Péter sétány 1/A, Budapest , Hungary

49. Yunnan Observatories, Chinese Academy of Sciences , 396 Yangfangwang, Guandu District, Kunming, 650216 , China

50. Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences , 396 Yangfangwang, Guandu District, Kunming 650216 , China

51. Center for Astronomical Mega-Science, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100012 , China

52. University of Chinese Academy of Sciences , Beijing 100049 , China

53. International Centre of Supernovae, Yunnan Key Laboratory , Kunming 650216 , China

54. Institute of Theoretical Physics, Shanxi University , Taiyuan 030006 , China

55. Department of Physics, Faculty of Science, University of Zanjan , University Blvd., Zanjan, 45371–38791 Zanjan , Iran

56. Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , 102206 Beijing , China

57. Department of Astronomy, Beijing Normal University , 100875 Beijing , China

58. Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139 , USA

59. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology , Cambridge, MA 02139 , USA

60. Department of Aeronautics and Astronautics , MIT, 77 Massachusetts Avenue, Cambridge, MA 02139 , USA

Abstract

ABSTRACT We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the Cycle 2 phase of its mission. We find seven new roAp stars previously unreported as such and present the analysis of a further 25 roAp stars that are already known. Three of the new stars show multiperiodic pulsations, while all new members are rotationally variable stars, leading to almost 70 per cent (22) of the roAp stars presented being α2 CVn-type variable stars. We show that targeted observations of known chemically peculiar stars are likely to overlook many new roAp stars, and demonstrate that multiepoch observations are necessary to see pulsational behaviour changes. We find a lack of roAp stars close to the blue edge of the theoretical roAp instability strip, and reaffirm that mode instability is observed more frequently with precise, space-based observations. In addition to the Cycle 2 observations, we analyse TESS data for all-known roAp stars. This amounts to 18 further roAp stars observed by TESS. Finally, we list six known roAp stars that TESS is yet to observe. We deduce that the incidence of roAp stars amongst the Ap star population is just 5.5 per cent, raising fundamental questions about the conditions required to excite pulsations in Ap stars. This work, coupled with our previous work on roAp stars in Cycle 1 observations, presents the most comprehensive, homogeneous study of the roAp stars in the TESS nominal mission, with a collection of 112 confirmed roAp stars in total.

Funder

STFC

MCIN

Spanish State Research Agency

European Space Agency

Research Foundation Flanders

Engineering and Physical Sciences Research Council

UK Research and Innovation

Natural Sciences and Engineering Research Council of Canada

NASA

UNAM

NCN