19.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kitt Peak National ObservatoryUS401 papers
- Cerro Tololo Inter-American ObservatoryCL274 papers
- U.S. National Science FoundationUS162 papers
- Space Telescope Science InstituteUS159 papers
- California Institute of TechnologyUS116 papers
- University of ArizonaUS99 papers
- Center for Astrophysics Harvard & SmithsonianUS80 papers
- Johns Hopkins UniversityUS71 papers
- University of California, BerkeleyUS58 papers
- University of Wisconsin–MadisonUS58 papers
- Carnegie ObservatoriesUS57 papers
- Goddard Space Flight CenterUS56 papers
15 papers · 1 filter
The Core Composition of a White Dwarf in a Close Double Degenerate System
S. Vennes, A. Kawka
We report the identification of the double degenerate system NLTT 16249 that comprises a normal, hydrogen-rich (DA) white dwarf and a peculiar, carbon-polluted white dwarf (DQ) sho…
Kinematics and Chemistry of Stars Along the Sagittarius Trailing Tidal Tail and Constraints on the Milky Way Mass Distribution
Jeffrey L. Carlin, Steven R. Majewski, Dana I. Casetti-Dinescu +3
We present three-dimensional kinematics of Sagittarius (Sgr) trailing tidal debris in six fields located 70-130 degrees along the stream from the Sgr dwarf galaxy core. The data ar…
WIYN Open Cluster Study. XLVIII. The Hard-Binary Population of NGC 188
Aaron M. Geller, Robert D. Mathieu
(abridged) We present an in-depth study of the hard-binary population of the old (7 Gyr) open cluster NGC 188. The main-sequence solar-type hard binaries in NGC 188 are nearly indi…
On Molecular Hydrogen Formation and the Magnetohydrostatic Equilibrium of Sunspots
Sarah A. Jaeggli, Haosheng Lin, Han Uitenbroek
We have investigated the problem of sunspot magnetohydrostatic equilibrium with comprehensive IR sunspot magnetic field survey observations of the highly sensitive Fe I lines at 15…
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…
Know the Star, Know the Planet. II. Speckle Interferometry of Exoplanet Host Stars
Brian D. Mason, William I. Hartkopf, Deepak Raghavan +4
A study of the host stars to exoplanets is important to understanding their environment. To that end, we report new speckle observations of a sample of exoplanet host primaries. Th…
Discovery of a Bright, Extremely Low-Mass White Dwarf in a Close Double Degenerate System
S. Vennes, J. R. Thorstensen, A. Kawka +6
We report the discovery of a bright (V ~ 13.7), extremely low-mass white dwarf in a close double degenerate system. We originally selected GALEX J171708.5+675712 for spectroscopic…
The Outer Disks of Dwarf Irregular Galaxies
Deidre A. Hunter, Bruce G. Elmegreen, Se-Heon Oh +5
To explore the properties of extreme outer stellar disks, we obtained ultra-deep V and GALEX UV images of 4 dwarf irregular galaxies and one Blue Compact Dwarf galaxy and ultra-dee…
Near-Contemporaneous Optical Spectroscopic and Infrared Photometric Observations of Candidate Herbig Ae/Be Stars in the Magellanic Clouds
Bradley W. Rush, John P. Wisniewski, Karen S. Bjorkman
We present near-IR (J,H,Ks) photometry for 27 of the 28 candidate Herbig Ae/Be stars in the Small and Large Magellanic Clouds identified via the EROS1 and EROS2 surveys as well as…
The number density and mass density of star-forming and quiescent galaxies at 0.4 < z < 2.2
Gabriel B. Brammer, Katherine E. Whitaker, Pieter G. van Dokkum +9
We study the build-up of the bimodal galaxy population using the NEWFIRM Medium-Band Survey, which provides excellent redshifts and well-sampled spectral energy distributions of ~2…
Alpha Enhancement and the Metallicity Distribution Function of Plaut's Window
Christian I. Johnson, R. Michael Rich, Jon P. Fulbright +2
We present Fe, Si, and Ca abundances for 61 giants in Plaut's Window (l=-1,b=-8.5) and Fe abundances for an additional 31 giants in a second, nearby field (l=0,b=-8) derived from h…
The Carina Project. IV. radial velocity distribution
M. Fabrizio, M. Nonino, G. Bono +16
We present new and accurate radial velocity (RV) measurements of luminous stars of all ages (old horizontal branch, intermediate--age red clump, and young blue plume, as well as re…
Large-scale shock-ionized and photo-ionized gas in M83: the impact of star formation
Sungryong Hong, Daniela Calzetti, Michael A. Dopita +20
We investigate the ionization structure of the nebular gas in M83 using the line diagnostic diagram, [O III](5007 \degA)/Hβ vs. [S II](6716 °A+6731 °A)/Hα with the newly available…
Detection of brown dwarf-like objects in the core of NGC3603
Loredana Spezzi, Giacomo Beccari, Guido De Marchi +22
We use near-infrared data obtained with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope to identify objects having the colors of brown dwarfs (BDs) in the field of the…
Why one-dimensional models fail in the diagnosis of average spectra from inhomogeneous stellar atmospheres
Han Uitenbroek, Serena Criscuoli
We investigate the feasibility of representing a structured multi-dimensional stellar atmosphere with a single one-dimensional average stratification for the purpose of spectral di…