311 citations · 2k across the 34 of their papers we have counts for
34 papers
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…
DAmodel: Hierarchical Bayesian Modelling of DA White Dwarfs for Spectrophotometric Calibration
Benjamin M. Boyd, Gautham Narayan, Kaisey S. Mandel +17
We use hierarchical Bayesian modelling to calibrate a network of 32 all-sky faint DA white dwarf (DA WD) spectrophotometric standards () alongside three CALSPEC st…
Faint white dwarf flux standards: data and models
Ralph C. Bohlin, Susana Deustua, Gautham Narayan +7
Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the CALSPEC (calibration spectra) database 19 faint white dwarfs (WDs) with all-sky…
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…