| dc.creator | Battich, Tiara | |
| dc.creator | Althaus, Leandro Gabriel | |
| dc.creator | Córsico, Alejandro Hugo | |
| dc.date | 2020 | |
| dc.date | 2021-08-30T15:33:18Z | |
| dc.date.accessioned | 2023-07-15T02:55:24Z | |
| dc.date.available | 2023-07-15T02:55:24Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/123742 | |
| dc.identifier | issn:0004-6361 | |
| dc.identifier | issn:1432-0746 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7463781 | |
| dc.description | <i>Context</i>. Two of the possible channels for the formation of low-mass (M⋆ ≲ 0.5 M⊙) hydrogen-deficient white dwarfs are the occurrence of a very-late thermal pulse after the asymptotic giant-branch phase or a late helium-flash onset in an almost stripped core of a red giant star.
<i>Aims</i>. We aim to asses the potential of asteroseismology to distinguish between the hot flasher and the very-late thermal pulse scenarios for the formation of low-mass hydrogen-deficient white dwarfs.
<i>Methods</i>. We computed the evolution of low-mass hydrogen-deficient white dwarfs from the zero-age main sequence in the context of the two evolutionary scenarios. We explore the pulsation properties of the resulting models for effective temperatures characterizing the instability strip of pulsating helium-rich white dwarfs.
<i>Results</i>. We find that there are significant differences in the periods and in the period spacings associated with low radial-order (k ≲ 10) gravity modes for white-dwarf models evolving within the instability strip of the hydrogen-deficient white dwarfs.
<i>Conclusions.</i> The measurement of the period spacings for pulsation modes with periods shorter than ∼500 s may be used to distinguish between the two scenarios. Moreover, period-to-period asteroseismic fits of low-mass pulsating hydrogen-deficient white dwarfs can help to determine their evolutionary history. | |
| dc.description | Instituto de Astrofísica de La Plata | |
| dc.description | Facultad de Ciencias Astronómicas y Geofísicas | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Ciencias Astronómicas | |
| dc.subject | Astronomía | |
| dc.subject | White dwarfs | |
| dc.subject | Asteroseismology | |
| dc.subject | Stars: evolution | |
| dc.subject | Stars: interiors | |
| dc.subject | Stars: oscillations | |
| dc.subject | Stars: low-mass | |
| dc.title | On the formation of hydrogen-deficient low-mass white dwarfs | |
| dc.type | Articulo | |
| dc.type | Articulo | |
