Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Lauffer, G R"'
Autor:
Romero, Alejandra D., da Rosa, Gabriela Oliveira, Kepler, S. O., Bradley, Paul A., Uzundag, Murat, Bell, Keaton J., Hermes, J. J., Lauffer, G. R.
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:
http://arxiv.org/abs/2210.15163
Pulsating low-mass white dwarf stars are white dwarfs with stellar masses between 0.30~M$_{\odot}$ and 0.45~M$_{\odot}$ that show photometric variability due to gravity-mode pulsations. Within this mass range, they can harbour both a helium- and hybr
Externí odkaz:
http://arxiv.org/abs/2112.03388
Autor:
Romero, Alejandra D., Amaral, L. Antunes, Klippel, T., Sanmartim, D., Fraga, L, Ourique, G., Pelisoli, I., Lauffer, G. R., Kepler, S. O., Koester, D.
We perform ground based photometric observations of 22 DA white dwarf stars, 10 already known ZZ Cetis and 12 candidates with atmospheric parameters inside the classical instability strip. We report on the discovery of four new variable DA white dwar
Externí odkaz:
http://arxiv.org/abs/1909.05555
Publikováno v:
2019MNRAS.484.2711R
We present a study of the dependence of the mass-radius relation for DA white dwarf stars on the hydrogen envelope mass and the impact on the value of log g, and thus the determination of the stellar mass. We employ a set of full evolutionary carbon-
Externí odkaz:
http://arxiv.org/abs/1901.04644
We explore the evolution of hydrogen-rich and hydrogen-deficient white dwarf stars with masses between 1.012 and 1.307 Msun, and initial metallicity of Z=0.02. These sequences are the result of main sequence stars with masses between 8.8 and 11.8 Msu
Externí odkaz:
http://arxiv.org/abs/1807.04774
Akademický článek
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Autor:
Romero, Alejandra D, da Rosa, Gabriela Oliveira, Kepler, S O, Bradley, Paul A, Uzundag, Murat, Bell, Keaton J, Hermes, J J, Lauffer, G R
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jan2023, Vol. 518 Issue 1, p1448-1458, 11p
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
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Autor:
Romero, Alejandra D, Amaral, L Antunes, Klippel, T, Sanmartim, D, Fraga, L, Ourique, G, Pelisoli, I, Lauffer, G R, Kepler, S O, Koester, D
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Dec2019, Vol. 490 Issue 2, p1803-1820, 18p
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Apr2019, Vol. 484 Issue 2, p2711-2724, 14p