3 papers
astro-ph.SR2019
New insight on Young Stellar Objects accretion shocks -- a claim for NLTE opacities
Lionel de Sá, Jean-Pierre Chièze, Chantal Stehlé +3
Context. Accreted material onto CTTSs is expected to form a hot quasi-periodic plasma structure that radiates in X-rays. Simulations of this phenomenon only partly match with obser…
astro-ph2003
Non-LTE Model Atmospheres for Late-Type Stars I. A Collection of Atomic Data for Light Neutral and Singly-Ionized Atoms
C. Allende Prieto, D. L. Lambert, I. Hubeny +1
With the goal of producing a reliable set of model atoms and singly-ionized ions for use in building NLTE model atmospheres, we have combined measured energy levels, critically-com…
astro-ph2002
Isolating Clusters with Wolf-Rayet Stars in I Zw 18
Thomas M. Brown, Sara R. Heap, Ivan Hubeny +2
We present UV images and spectra of the starburst galaxy I Zw 18, taken with the Space Telescope Imaging Spectrograph. The high spatial resolution of these data allows us to isolat…