40 citations · 40 across the 4 of their papers we have counts for
10 papers · 1 filter
Argon Abundances in the Solar Neighborhood: Non-LTE Analysis of Orion Association B-type Stars
Thierry Lanz, Katia Cunha, Jon Holtzman +1
Argon abundances have been derived for a sample of B main-sequence stars in the Orion association. The abundance calculations are based on NLTE metal line-blanketed model atmospher…
A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars
Thierry Lanz, Ivan Hubeny
We have constructed a comprehensive grid of 1540 metal line-blanketed, NLTE, plane-parallel, hydrostatic model atmospheres for the basic parameters appropriate to early B-type star…
Effects of mass loss for highly-irradiated giant planets
W. B. Hubbard, M. F. Hattori, A. Burrows +2
We present calculations for the evolution and surviving mass of highly-irradiated extrasolar giant planets (EGPs) at orbital semimajor axes ranging from 0.023 to 0.057 AU using a g…
Preliminary analysis of an extreme helium sdO star: BD+25 4655
J. Budaj, V. Elkin, I. Hubeny
Preliminary analysis of CCD spectra obtained by the 6m SAO telescope is presented. We have used simple H-He NLTE model atmospheres computed by TLUSTY to derive the basic parameters…
A New Formation Mechanism for the Hottest Horizontal-Branch Stars
Allen V. Sweigart, Thomas M. Brown, Thierry Lanz +2
Stars with very large mass loss on the red-giant branch can undergo the helium flash while descending the white-dwarf cooling curve. Under these conditions the flash convection zon…
Heavy element abundances in DA white dwarfs
M. A. Barstow, M. R. Burleigh, N. P. Bannister +4
We present a series of systematic abundance measurements for a group of hot DA white dwarfs in the temperature range 20,000-75,000K, based on far-UV spectroscopy with STIS on HST,…