972 citations
- Association of Universities for Research in AstronomyUS162 papers
- National Radio Astronomy ObservatoryUS126 papers
- Kitt Peak National ObservatoryUS107 papers
- Center for Astrophysics Harvard & SmithsonianUS102 papers
- University of ArizonaUS84 papers
- California Institute of TechnologyUS82 papers
- University of Wisconsin–MadisonUS77 papers
- Cerro Tololo Inter-American ObservatoryCL75 papers
- Goddard Space Flight CenterUS73 papers
- University of Maryland, College ParkUS72 papers
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415 papers · 1 filter
Infrared Spectroscopy of Symbiotic Stars. VII. Binary Orbit and Long Secondary Period Variability of CH Cygni
Kenneth Hinkle, Francis Fekel, Richard Joyce
High-dispersion spectroscopic observations are used to refine orbital elements for the symbiotic binary CH Cyg. The current radial velocities, added to a previously published 13 ye…
Dwarf Galaxy Starburst Statistics in the Local Volume
Janice C. Lee, Robert C. Kennicutt, José G. Funes S. J. +2
An unresolved question in galaxy evolution is whether the star formation histories of low mass systems are preferentially dominated by starbursts or modes that are more quiescent a…
Two New Variable Hot DQ Stars
B. N. Barlow, B. H. Dunlap, R. Rosen +1
We have discovered periodic variations in the light curves of two hot DQ stars from the Sloan Digital Sky Survey, SDSS J220029.08-074121.5 and SDSS J234843.30-094245.3. These are t…
Chemical Abundances of the Leo II Dwarf Galaxy
Matthew Shetrone, Michael H. Siegel, David O. Cook +1
We use previously-published moderate-resolution spectra in combination with stellar atmosphere models to derive the first measured chemical abundance ratios in the Leo II dSph gala…
Tools for Dissecting Supernova Remnants Observed with Chandra: Methods and Application to the Galactic Remnant W49B
Laura A. Lopez, Enrico Ramirez-Ruiz, David A. Pooley +1
We introduce methods to quantify the X-ray morphologies of supernova remnants observed with the Chandra X-ray Telescope. These include a power-ratio technique to measure morphologi…
A Pilot Survey of HI in Field Galaxies at Redshift z~0.2
Barbara Catinella, Martha P. Haynes, Riccardo Giovanelli +2
We present the first results of a targeted survey carried out with the 305 m Arecibo telescope to detect HI-line emission from galaxies at redshift z>0.16. The targets, selected fr…