311 citations · 2k across the 34 of their papers we have counts for
10 papers · 1 filter
Carbon in J0815+4729: Casting a shadow of doubt on the interpretation of CH absorption in the most primitive stars
Junbo Zhang, Carlos Allende Prieto, Yeisson Osorio +7
Aims. We revisit the carbon abundance in the primitive iron-poor star J0815+4729 ([Fe/H] = -5.49). J0815+4729 is so carbon-enhanced and oxygen-rich that, in addition to CH and C2 m…
WISE J005128.08+645651.7: An enigmatic R Coronae Borealis star
J. Budaj, K. Bernhard, I. Hubeny
Context. R Coronae Borealis (RCB) stars are hydrogen-deficient and carbon-rich (HdC) supergiants that likely originate from a merger of two white dwarfs. As such they are not expec…
The updated BOSZ synthetic stellar spectral library
Szabolcs Mészáros, Ralph Bohlin, Carlos Allende Prieto +9
Context. The modeling of stellar spectra of flux standards observed by the Hubble and James Webb space telescopes requires a large synthetic spectral library that covers a wide atm…
Effective Temperatures of Cataclysmic Variable White Dwarfs as a Probe of their Evolution
A. F. Pala, B. T. Gänsicke, D. Townsley +29
We present HST spectroscopy for 45 cataclysmic variables (CVs), observed with HST/COS and HST/STIS. For 36 CVs, the white dwarf is recognisable through its broad Ly absorption p…
GW Librae: A unique laboratory for pulsations in an accreting white dwarf
O. Toloza, B. T. Gaensicke, J. J. Hermes +22
Non-radial pulsations have been identified in a number of accreting white dwarfs in cataclysmic variables. These stars offer insight into the excitation of pulsation modes in atmos…
A possible solution to the Lyman/Balmer line problem in hot DA white dwarfs
S. P. Preval, M. A. Barstow, N. R. Badnell +2
Arguably, the best method for determining the effective temperature () and surface gravity (log ) of a DA white dwarf is by fitting the Hydrogen Lyman and Balm…