Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Gracyn Jewett"'
Autor:
Gracyn Jewett, Mukremin Kilic, Pierre Bergeron, Adam Moss, Simon Blouin, Warren R. Brown, Alekzander Kosakowski, Silvia Toonen, Marcel A. Agüeros
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 12 (2024)
We present a detailed model atmosphere analysis of massive white dwarfs with M > 0.9 M _⊙ and T _eff ≥ 11,000 K in the Montreal White Dwarf Database 100 pc sample and the Pan-STARRS footprint. We obtained follow-up optical spectroscopy of 109 obj
Externí odkaz:
https://doaj.org/article/c2fa79acaf194170b91f4d5955b63ab6
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 159 (2024)
Four years after the discovery of a unique DAQ white dwarf with a hydrogen-dominated and carbon-rich atmosphere, we report the discovery of four new DAQ white dwarfs, including two that were not recognized properly in the literature. We find all five
Externí odkaz:
https://doaj.org/article/4fd55103899849bfb22c2e58f86a5852
Autor:
Mukremin Kilic, Alejandro H Córsico, Adam G Moss, Gracyn Jewett, Francisco C De Gerónimo, Leandro G Althaus
We present APO and Gemini time-series photometry of WD J004917.14$-$252556.81, an ultramassive DA white dwarf with $T_{\rm eff} = 13020$ K and $\log{g} = 9.34$. We detect variability at two significant frequencies, making J0049$-$2525 the most massiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99599363fa32d0cd3177da4f142e0d44