Publicación
The early nucleosynthesis of O and Fe
The new observational O/Fe vs Fe/H relationship in halo dwarfs is analyzed in terms of a model of chemical evolution for the solar neighborhood. The role of...
-
-
PublicaciónThe Mass and Age Distribution of Halo White Dwarfs in the Canada-France Imaging SurveyWe present optical spectroscopy for 18 halo white dwarfs identified using photometry from the Canada-France Imaging Survey and Pan-STARRS1 DR1 3π survey...
-
PublicaciónThe Pre-He White Dwarf in the Post-mass Transfer Binary EL CVnEL CVn is the prototype of a class of eclipsing binaries that consist of an A- or F-type main-sequence star and a hot, low-mass, pre-He white dwarf (pre-He WD)...
-
PublicaciónThe pulsating DA white dwarf PG2303+243 revisitedAn analysis of about 27 h of fast photometry of the cool ZZ Ceti white dwarf PG2303+243 reveals (1) the presence of many modes (as many as 22), some of them of...
-
PublicaciónThe ZZ Ceti Instability Strip for the Most Massive White Dwarf PulsatorsWe present time-series photometry of 31 massive DA white dwarfs with M ≳ 0.9 M ⊙ within the ZZ Ceti instability strip from the Montreal White Dwarf Database 100...
-
PublicaciónTime resolved spectroscopy of AM CVnThe preliminary results of time-resolved spectroscopy of the He White Dwarf system AM CVn are presented. Spectral variations at different photometric periods...
-
PublicaciónWhite Dwarf Binaries across the H-R DiagramWe created the APOGEE-GALEX-Gaia catalog to study white dwarf (WD) binaries. This database aims to create a minimally biased sample of WD binary systems...
-
PublicaciónWhite Dwarfs in Close Binaries: A Systematic Search for Mass-transfer Systems and Supernova Ia Progenitors in the APOGEE SurveyWe have created a new and unique database, the APOGEE-Galaxy Evolution Explorer (GALEX)-Gaia catalog, to study white dwarfs in close binaries, and, in...