311 citations · 1.3k across the 32 of their papers we have counts for
4 papers · 1 filter
AB Dor in '94: I. HST/GHRS Observations of the Quiescent Chromosphere of an Active Star
J. C. Brandt, S. R. Heap, F. M. Walter +15
We analyze HST/GHRS spectra of AB Doradus, the prototypical ultra-rapidly rotating K dwarf. We observed chromospheric (Mg II) and transition region (C II, Si IV, C IV, and N V) lin…
Indicator of Exo-Solar Planet(s) in the Circumstellar Disk Around Beta Pictoris
Nick Gorkavyi, Sara Heap, Leonid Ozernoy +2
Our efficient numerical approach has been applied to modeling the asymmetric circumstellar dust disk around Beta Pictoris as observed with the HST/STIS. We present a new model on t…
HST/STIS observations of the HeII Gunn-Peterson effect towards HE 2347-4342
Alain Smette, Sara R. Heap, Gerard M. Williger +3
We present an HST STIS spectrum of the HeII Gunn-Peterson effect towards HE2347-4342. Compared to the previous HST GHRS data obtained by Reimers et al. (1997), the STIS spectrum ha…
Orbital Motion of Resonant Clumps in Dusty Circumstellar Disks as a Signature of an Embedded Planet
Nick N. Gorkavyi, Leonid M. Ozernoy, John C. Mather +1
We have applied a powerful numerical approach to compute, with a high resolution, the structure of dusty circumstellar disks with embedded planets. We emphasize some testable impli…