4k citations
- University of Colorado BoulderUS1.9k papers
- National Institute of Standards and TechnologyUS648 papers
- Centre National de la Recherche ScientifiqueFR180 papers
- Center for Astrophysics Harvard & SmithsonianUS140 papers
- Laboratory for Atmospheric and Space PhysicsUS121 papers
- California Institute of TechnologyUS114 papers
- University of California, BerkeleyUS113 papers
- University of Colorado SystemUS103 papers
- Space Telescope Science InstituteUS98 papers
- Princeton UniversityUS94 papers
- Goddard Space Flight CenterUS92 papers
- Harvard UniversityUS90 papers
18 papers · 2 filters
High-resolution X-ray spectroscopy of the magnetic Of?p star HD148937
Y. Naze, S. A. Zhekov, N. R. Walborn
High-resolution data of the peculiar magnetic massive star HD148937 were obtained with Chandra-HETGS, and are presented here in combination with a re-analysis of the older XMM-RGS…
HST-COS Observations of Hydrogen, Helium, Carbon and Nitrogen Emission from the SN 1987A Reverse Shock
Kevin France, Richard McCray, Steven V. Penton +18
We present the most sensitive ultraviolet observations of Supernova 1987A to date. Imaging spectroscopy from the Hubble Space Telescope-Cosmic Origins Spectrograph shows many narro…
NUV Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission
Laura Ingleby, Nuria Calvet, Edwin Bergin +20
Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study. We presen…
Far Ultraviolet Continuum Emission: Applying this Diagnostic to the Chromospheres of Solar-Mass Stars
Jeffrey L. Linsky, Rachel Bushinsky, Tom Ayres +2
The far ultraviolet (FUV) continuum flux is recognized as a very sensitive diag- nostic of the temperature structure of the Sun's lower chromosphere. Until now analysis of the avai…
Advances in Atomic Data for Neutron-Capture Elements
N. C. Sterling, M. C. Witthoeft, D. A. Esteves +4
Neutron(n)-capture elements (atomic number Z>30), which can be produced in planetary nebula (PN) progenitor stars via s-process nucleosynthesis, have been detected in nearly 100 PN…
CO and H2 Absorption in the AA Tauri Circumstellar Disk
Kevin France, Eric B. Burgh, Gregory J. Herczeg +7
The direct study of molecular gas in inner protoplanetary disks is complicated by uncertainties in the spatial distribution of the gas, the time-variability of the source, and the…