Photometric White Dwarf Rotation

Autor: Gabriela Oliveira da Rosa, S. O. Kepler, L. T. T. Soethe, Alejandra D. Romero, Keaton J. Bell

Publikováno v: The Astrophysical Journal, Vol 974, Iss 2, p 314 (2024)

We present a census of photometrically detected rotation periods for white dwarf (WD) stars. We analyzed the light curves of 9285 WD stars observed by the Transiting Exoplanet Survey Satellite up to Sector 69. Using Fourier transform analyses and the

Externí odkaz: https://doaj.org/article/3e6f4621c24f48ed8dc65644f35c3e88

Asteroseismology of PG 1541 + 651 and BPM 31594 with TESS

Autor: Alejandra D Romero, Gabriela Oliveira da Rosa, S O Kepler, Paul A Bradley, Murat Uzundag, Keaton J Bell, J J Hermes, G R Lauffer

Publikováno v: Monthly Notices of the Royal Astronomical Society. 518:1448-1458

We present the photometric data from TESS for two known ZZ Ceti stars, PG 1541+651 and BPM 31594. Before TESS, both objects only had observations from short runs from ground-based facilities, with three and one period detected, respectively. The TESS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5deca51b425e0e0cd95ff047779d6cf3
https://doi.org/10.1093/mnras/stac3113

Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS -- IV. Discovery of two new GW Vir stars: TIC0403800675 and TIC1989122424

Autor: Murat Uzundag, Alejandro H Córsico, S O Kepler, Leandro G Althaus, Klaus Werner, Nicole Reindl, Maja Vučković

We present two new GW Vir-type pulsating white dwarf stars, TIC\,0403800675 (WD\,J115727.68-280349.64) and TIC\,1989122424 (WD J211738.38-552801.18) discovered in the Transiting Exoplanet Survey Satellite (TESS) photometric data. For both stars, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::940638d0cf291c1843bfc09666312857
http://arxiv.org/abs/2204.02501

Discovery of 74 new bright ZZ Ceti stars in the first three years of TESS

Autor: Alejandra D Romero, S O Kepler, J J Hermes, Larissa Antunes Amaral, Murat Uzundag, Zsófia Bognár, Keaton J Bell, Madison VanWyngarden, Andy Baran, Ingrid Pelisoli, Gabriela da Rosa Oliveira, Detlev Koester, T S Klippel, Luciano Fraga, Paul A Bradley, Maja Vučković, Tyler M Heintz, Joshua S Reding, B C Kaiser, Stéphane Charpinet

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2022, 511, pp.1574-1590. ⟨10.1093/mnras/stac093⟩
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS

We report the discovery of 74 new pulsating DA white dwarf stars, or ZZ Cetis, from the data obtained by the Transiting Exoplanet Survey Satellite (TESS) mission, from Sectors 1 to 39, corresponding to the first 3 cycles. This includes objects from t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cb2f3649c84b4cb3d22baa31d245d13
https://hal-insu.archives-ouvertes.fr/insu-03672023/file/stac093.pdf

Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS

Autor: A. H. Córsico, M. Uzundag, S. O. Kepler, L. G. Althaus, R. Silvotti, P. A. Bradley, A. S. Baran, D. Koester, K. J. Bell, A. D. Romero, J. J. Hermes, N. P. Gentile Fusillo

Publikováno v: Astronomy & Astrophysics. 668:A161

Context. The TESS space mission has recently demonstrated its great potential to discover new pulsating white dwarf and pre-white dwarf stars, and to detect periodicities with high precision in already known white-dwarf pulsators. Aims. We report the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f714df677664663cb4b05cdcf27b6f3
https://doi.org/10.1051/0004-6361/202244198