Asteroseismology of PG 1541$+$651 and BPM 31594 with TESS
| Autor: | Romero, Alejandra D., da Rosa, Gabriela Oliveira, Kepler, S. O., Bradley, Paul A., Uzundag, Murat, Bell, Keaton J., Hermes, J. J., Lauffer, G. R. |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1093/mnras/stac3113 |
| Popis: | We present the photometric data from TESS for two known ZZ Ceti stars, PG 1541+651 and BPM 31594. Before TESS, both objects only had observations from short runs from ground-based facilities, with three and one period detected, respectively. The TESS data allowed the detection of multiple periodicities, 12 for PG 1541$+$651, and six for BPM 31594, which enables us to perform a detailed asteroseismological study. For both objects we found a representative asteroseismic model with canonical stellar mass ~ 0.61 Msun and thick hydrogen envelopes, thicker than 10^(-5.3) M_*. The detection of triplets in the Fourier transform also allowed us to estimate mean rotation periods, being ~22 h for PG 1541+651 and 11.6 h for BPM 31594, which is consistent with range of values reported for other ZZ Ceti stars. Comment: 12 pages, 11 figures. Accepted for publication in MNRAS |
| Databáze: | arXiv |
| Externí odkaz: |
|