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

J 2024

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

HOLDSWORTH, D. L., M. S. CUNHA, M. LARES-MARTIZ, D. W. KURTZ, V. ANTOCI et. al.

Basic information

Original name

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

Authors

HOLDSWORTH, D. L., M. S. CUNHA, M. LARES-MARTIZ, D. W. KURTZ, V. ANTOCI, Barcelo S. FORTEZA, P. DE CAT, A. DEREKAS, C. KAYHAN, D. OZUYAR, Marek SKARKA (203 Czech Republic, belonging to the institution), D. R. HEY, F. SHI, D. M. BOWMAN, O. KOBZAR, Ayala A. GOMEZ, Zs BOGNAR, D. L. BUZASI, M. EBADI, L. FOX-MACHADO, Garcia A. HERNANDEZ, H. GHASEMI, J. A. GUZIK, R. HANDBERG, G. HANDLER, A. HASANZADEH, R. JAYARAMAN, V. KHALACK, O. KOCHUKHOV, C. C. LOVEKIN, P. MIKOLAJCZYK, D. MKRTICHIAN, S. J. MURPHY, E. NIEMCZURA, B. G. OLAFSSON, J. PASCUAL-GRANADO, Ernst PAUNZEN (40 Austria, belonging to the institution), N. POSILEK, A. RAMON-BALLESTA, H. SAFARI, A. SAMADI-GHADIM, B. SMALLEY, A. SODOR, I. STATEVA, J. C. SUAREZ, R. SZABO, T. WU, E. ZIAALI, W. ZONG and S. SEAGER

Edition

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2024, 0035-8711

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 4.800 in 2022

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1093/mnras/stad3800

UT WoS

001186620300001

Keywords in English

asteroseismology; techniques: photometric; stars: chemically peculiar; stars: oscillations; stars: variables; stars: individual

Abstract

V originále

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.

Citovat

HOLDSWORTH, D. L., M. S. CUNHA, M. LARES-MARTIZ, D. W. KURTZ, V. ANTOCI, Barcelo S. FORTEZA, P. DE CAT, A. DEREKAS, C. KAYHAN, D. OZUYAR, Marek SKARKA, D. R. HEY, F. SHI, D. M. BOWMAN, O. KOBZAR, Ayala A. GOMEZ, Zs BOGNAR, D. L. BUZASI, M. EBADI, L. FOX-MACHADO, Garcia A. HERNANDEZ, H. GHASEMI, J. A. GUZIK, R. HANDBERG, G. HANDLER, A. HASANZADEH, R. JAYARAMAN, V. KHALACK, O. KOCHUKHOV, C. C. LOVEKIN, P. MIKOLAJCZYK, D. MKRTICHIAN, S. J. MURPHY, E. NIEMCZURA, B. G. OLAFSSON, J. PASCUAL-GRANADO, Ernst PAUNZEN, N. POSILEK, A. RAMON-BALLESTA, H. SAFARI, A. SAMADI-GHADIM, B. SMALLEY, A. SODOR, I. STATEVA, J. C. SUAREZ, R. SZABO, T. WU, E. ZIAALI, W. ZONG and S. SEAGER. TESS Cycle 2 observations of roAp stars with 2-min cadence data. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2024, vol. 527, No 4, p. 9548-9580. ISSN 0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stad3800.

@article{2387821,
   author = {Holdsworth, D. L. and Cunha, M. S. and LaresandMartiz, M. and Kurtz, D. W. and Antoci, V. and Forteza, Barcelo S. and De Cat, P. and Derekas, A. and Kayhan, C. and Ozuyar, D. and Skarka, Marek and Hey, D. R. and Shi, F. and Bowman, D. M. and Kobzar, O. and Gomez, Ayala A. and Bognar, Zs and Buzasi, D. L. and Ebadi, M. and FoxandMachado, L. and Hernandez, Garcia A. and Ghasemi, H. and Guzik, J. A. and Handberg, R. and Handler, G. and Hasanzadeh, A. and Jayaraman, R. and Khalack, V. and Kochukhov, O. and Lovekin, C. C. and Mikolajczyk, P. and Mkrtichian, D. and Murphy, S. J. and Niemczura, E. and Olafsson, B. G. and PascualandGranado, J. and Paunzen, Ernst and Posilek, N. and RamonandBallesta, A. and Safari, H. and SamadiandGhadim, A. and Smalley, B. and Sodor, A. and Stateva, I. and Suarez, J. C. and Szabo, R. and Wu, T. and Ziaali, E. and Zong, W. and Seager, S.},
   article_number = {4},
   doi = {http://dx.doi.org/10.1093/mnras/stad3800},
   keywords = {asteroseismology; techniques: photometric; stars: chemically peculiar; stars: oscillations; stars: variables; stars: individual},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {TESS Cycle 2 observations of roAp stars with 2-min cadence data},
   url = {https://academic.oup.com/mnras/article/527/4/9548/7464054},
   volume = {527},
   year = {2024}
}

TY  - JOUR
ID  - 2387821
AU  - Holdsworth, D. L. - Cunha, M. S. - Lares-Martiz, M. - Kurtz, D. W. - Antoci, V. - Forteza, Barcelo S. - De Cat, P. - Derekas, A. - Kayhan, C. - Ozuyar, D. - Skarka, Marek - Hey, D. R. - Shi, F. - Bowman, D. M. - Kobzar, O. - Gomez, Ayala A. - Bognar, Zs - Buzasi, D. L. - Ebadi, M. - Fox-Machado, L. - Hernandez, Garcia A. - Ghasemi, H. - Guzik, J. A. - Handberg, R. - Handler, G. - Hasanzadeh, A. - Jayaraman, R. - Khalack, V. - Kochukhov, O. - Lovekin, C. C. - Mikolajczyk, P. - Mkrtichian, D. - Murphy, S. J. - Niemczura, E. - Olafsson, B. G. - Pascual-Granado, J. - Paunzen, Ernst - Posilek, N. - Ramon-Ballesta, A. - Safari, H. - Samadi-Ghadim, A. - Smalley, B. - Sodor, A. - Stateva, I. - Suarez, J. C. - Szabo, R. - Wu, T. - Ziaali, E. - Zong, W. - Seager, S.
PY  - 2024
TI  - TESS Cycle 2 observations of roAp stars with 2-min cadence data
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 527
IS  - 4
SP  - 9548-9580
EP  - 9548-9580
PB  - Oxford University Press
SN  - 00358711
KW  - asteroseismology
KW  - techniques: photometric
KW  - stars: chemically peculiar
KW  - stars: oscillations
KW  - stars: variables
KW  - stars: individual
UR  - https://academic.oup.com/mnras/article/527/4/9548/7464054
N2  - 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.
ER  -

HOLDSWORTH, D. L., M. S. CUNHA, M. LARES-MARTIZ, D. W. KURTZ, V. ANTOCI, Barcelo S. FORTEZA, P. DE CAT, A. DEREKAS, C. KAYHAN, D. OZUYAR, Marek SKARKA, D. R. HEY, F. SHI, D. M. BOWMAN, O. KOBZAR, Ayala A. GOMEZ, Zs BOGNAR, D. L. BUZASI, M. EBADI, L. FOX-MACHADO, Garcia A. HERNANDEZ, H. GHASEMI, J. A. GUZIK, R. HANDBERG, G. HANDLER, A. HASANZADEH, R. JAYARAMAN, V. KHALACK, O. KOCHUKHOV, C. C. LOVEKIN, P. MIKOLAJCZYK, D. MKRTICHIAN, S. J. MURPHY, E. NIEMCZURA, B. G. OLAFSSON, J. PASCUAL-GRANADO, Ernst PAUNZEN, N. POSILEK, A. RAMON-BALLESTA, H. SAFARI, A. SAMADI-GHADIM, B. SMALLEY, A. SODOR, I. STATEVA, J. C. SUAREZ, R. SZABO, T. WU, E. ZIAALI, W. ZONG and S. SEAGER. TESS Cycle 2 observations of roAp stars with 2-min cadence data. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2024, vol.~527, No~4, p.~9548-9580. ISSN~0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stad3800.

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