1.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Colorado BoulderUS825 papers
- Goddard Space Flight CenterUS282 papers
- Centre National de la Recherche ScientifiqueFR225 papers
- University of California, BerkeleyUS167 papers
- University of ArizonaUS129 papers
- Joint Institute for Laboratory AstrophysicsUS121 papers
- Center for Astrophysics Harvard & SmithsonianUS119 papers
- University of MichiganUS106 papers
- Space Telescope Science InstituteUS105 papers
- KTH Royal Institute of TechnologySE103 papers
- Stockholm UniversitySE103 papers
- Southwest Research InstituteUS99 papers
30 papers · 1 filter
Science With The Australian Square Kilometre Array Pathfinder
Simon Johnston
The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive…
Observable Consequences of Planet Formation Models in Systems with Close-in Terrestrial Planets
Sean N. Raymond, Rory Barnes, Avi M. Mandell
To date, two planetary systems have been discovered with close-in, terrestrial-mass planets (< 5-10 Earth masses). Many more such discoveries are anticipated in the coming years wi…
Spitzer Observations of the HII Region NGC 2467: An Analysis of Triggered Star Formation
Keely D. Snider, J. Jeff Hester, Steven J. Desch +2
We present new Spitzer Space Telescope observations of the region NGC 2467, and use these observations to determine how the environment of an HII region affects the process of star…
Chandra X-ray Observations of the 0.6 < z < 1.1 Red-Sequence Cluster Survey Sample
Amalia K. Hicks, Erica Ellingson, Mark Bautz +6
We present the results of Chandra observations of 13 optically-selected clusters with 0.6<z< 1.1, discovered via the Red-sequence Cluster Survey (RCS). All but one are detected at…
Latitudinal variation of the solar photospheric intensity
Mark P. Rast, Ada Ortiz, Randle W. Meisner
We have examined images from the Precision Solar Photometric Telescope (PSPT) at the Mauna Loa Solar Observatory (MLSO) in search of latitudinal variation in the solar photospheric…
The Red-Sequence Luminosity Function in Galaxy Clusters since z~1
David G. Gilbank, H. K. C. Yee, E. Ellingson +4
We use a statistical sample of ~500 rich clusters taken from 72 square degrees of the Red-Sequence Cluster Survey (RCS-1) to study the evolution of ~30,000 red-sequence galaxies in…
Formaldehyde Densitometry of Starburst Galaxies
Jeffrey G. Mangum, Jeremy Darling, Karl M. Menten +1
With a goal toward deriving the physical conditions in external galaxies, we present a survey of the formaldehyde emission in a sample of starburst systems. By extending a techniqu…
A Dense Gas Trigger for OH Megamasers
Jeremy Darling
HCN and CO line diagnostics provide new insight into the OH megamaser (OHM) phenomenon, suggesting a dense gas trigger for OHMs. We identify three physical properties that differen…
Evidence for line-of-sight structure in a comparison of X-ray and optical observations of the high-redshift cluster RCS043938-2904.7
Benjamin Cain, David G. Gilbank, M. W. Bautz +6
We present new Chandra observations of a high redshift (z~1) galaxy cluster discovered in the Red-Sequence Cluster Survey (RCS): RCS043938-2904.7. X-ray luminosity measurements and…
HI and OH absorption in the lensing galaxy of MG J0414+0534
S. J. Curran, J. Darling, A. D. Bolatto +3
We report the detection of \HI 21-cm absorption in the early-type lensing galaxy towards MG J0414+0534 with the Green Bank Telescope. The absorption, with total $N_{\rm HI…
The Metallicity of Intergalactic Gas in Cosmic Voids
John T. Stocke, Charles W. Danforth, J. Michael Shull +2
We have used the Hubble/STIS and FUSE archives of ultraviolet spectra of bright AGN to identify intergalactic Lya absorbers in nearby (z < 0.1) voids. From a parent sample of 651 L…
A Multiwavelength Analysis of the Strong Lensing Cluster RCS 022434-0002.5 at z=0.778
Amalia K. Hicks, Erica Ellingson, Henk Hoekstra +6
We present the results of two (101 ks total) Chandra observations of the z=0.778 optically selected lensing cluster RCS022434-0002.5, along with weak lensing and dynamical analyses…
Why Do Only Some Galaxy Clusters Have Cool Cores?
Jack O. Burns, Eric J. Hallman, Brennan Gantner +2
Flux-limited X-ray samples indicate that about half of rich galaxy clusters have cool cores. Why do only some clusters have cool cores while others do not? In this paper, cosmologi…
Collisional Velocities and Rates in Resonant Planetesimal Belts
Martina Queck, Alexander V. Krivov, Miodrag Sremcevic +1
We consider a belt of small bodies around a star, captured in one of the external or 1:1 mean-motion resonances with a massive perturber. The objects in the belt collide with each…
A Chandra X-ray detection of the L dwarf binary Kelu-1: Simultaneous Chandra and Very Large Array observations
M. Audard, R. A. Osten, A. Brown +4
Magnetic activity in ultracool dwarfs, as measured in X-rays and H, shows a steep decline after spectral type M7-M8. So far, no L dwarf has been detected in X-rays. In contrast,…
A decreased probability of habitable planet formation around low-mass stars
Sean N. Raymond, John Scalo, Victoria Meadows
Smaller terrestrial planets (< 0.3 Earth masses) are less likely to retain the substantial atmospheres and ongoing tectonic activity probably required to support life. A key elemen…
A Constant Spectral Index for Sagittarius A* During Infrared/X-ray Intensity Variations
S. D. Hornstein, K. Matthews, A. M. Ghez +5
We report the first time-series of broadband infrared (IR) color measurements of Sgr A*, the variable emission source associated with the supermassive black hole at the Galactic Ce…
Comparing Star Formation on Large Scales in the c2d Legacy Clouds: Bolocam 1.1 mm Dust Continuum Surveys of Serpens, Perseus, and Ophiuchus
M. L. Enoch, J. Glenn, N. J. Evans +3
We have undertaken an unprecedentedly large 1.1 millimeter continuum survey of three nearby star forming clouds using Bolocam at the Caltech Submillimeter Observatory. We mapped th…
And in the Darkness Bind Them: Equatorial Rings, B[e] Supergiants, and the Waists of Bipolar Nebulae
Nathan Smith, John Bally, Josh Walawender
We report the discovery of two new circumstellar ring nebulae in the western Carina Nebula. The brighter object, SBW1, resembles a lidless staring eye and encircles a B1.5 Iab supe…
Composite Interstellar Grains
D. B. Vaidya, Ranjan Gupta, T. P. Snow
The composite grain is made up of a host silicate spheroid and graphite inclusions. The extinction efficiencies of the composite spheroidal grains for three axial ratios are comput…
Spectroscopy of moderately high-redshift RCS-1 clusters
David G. Gilbank, H. K. C. Yee, E. Ellingson +3
We present spectroscopic observations of 11 moderately high-redshift (z~0.7- 1.0) clusters from the first Red-Sequence Cluster Survey (RCS-1). We find excellent agreement between t…
The Beta-Model Problem: The Incompatibility of X-ray and Sunyaev-Zeldovich Effect Model Fitting for Galaxy Clusters
Eric J. Hallman, Jack O. Burns, Patrick M. Motl +1
We have analyzed a large sample of numerically simulated clusters to demonstrate the adverse effects resulting from use of X-ray fitted beta-model parameters with Sunyaev-Zeldovich…
Cassini UVIS Observations of the Io Plasma Torus. IV. Modeling Temporal and Azimuthal Variability
A. J. Steffl, P. A. Delamere, F. Bagenal
In this fourth paper in a series, we present a model of the remarkable temporal and azimuthal variability of the Io plasma torus observed during the Cassini encounter with Jupiter.…
Asteroseismic Signatures of Stellar Magnetic Activity Cycles
T. S. Metcalfe, W. A. Dziembowski, P. G. Judge +1
Observations of stellar activity cycles provide an opportunity to study magnetic dynamos under many different physical conditions. Space-based asteroseismology missions will soon y…