22k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Massachusetts Institute of TechnologyUS255 papers
- California Institute of TechnologyUS233 papers
- Triangle Universities Nuclear LaboratoryUS232 papers
- Center for Astrophysics Harvard & SmithsonianUS218 papers
- Duke UniversityUS195 papers
- University of California, BerkeleyUS186 papers
- Lawrence Berkeley National LaboratoryUS185 papers
- Centre National de la Recherche ScientifiqueFR182 papers
- University of WashingtonUS182 papers
- Princeton UniversityUS178 papers
- The University of Texas at AustinUS168 papers
- Vanderbilt UniversityUS159 papers
13 papers · 2 filters
Dark Matter on the Smallest Scales
E. R. Siegel, G. D'Amico, E. Di Napoli +5
This work investigates the dark matters structures that form on the smallest cosmological scales. We find that the types and abundances of structures which form at approximately Ea…
The Effect of Cluster Environment on Galaxy Evolution in the Pegasus I Cluster
Lorenza Levy, James A. Rose, Jacqueline H. van Gorkom +1
We present HI observations of 54 galaxies in the Pegasus cluster. The observations include single dish HI measurements, obtained with the Arecibo telescope for all 54 galaxies in t…
Initial Results from the USNO Dispersed Fourier Transform Spectrograph
Arsen R. Hajian, Bradford B. Behr, Andrew T. Cenko +15
We have designed and constructed a ``dispersed Fourier Transform Spectrometer'' (dFTS), consisting of a conventional FTS followed by a grating spectrometer. By combining these two…
On the asymptotic giant branch star origin of peculiar spinel grain OC2
M. Lugaro, A. I. Karakas, L. R. Nittler +4
Microscopic presolar grains extracted from primitive meteorites have extremely anomalous isotopic compositions revealing the stellar origin of these grains. The composition of pres…
Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars
Rajib Ganguly, Michael S. Brotherton, Nahum Arav +35
We present low-resolution ultraviolet spectra of 14 low redshift (z<0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outf…
HI column densities of z > 2 Swift gamma-ray bursts
P. Jakobsson, J. P. U. Fynbo, C. Ledoux +18
Context: Before the launch of the Swift satellite, the majority of the gamma-ray burst (GRB) afterglows for which Ly-alpha was redshifted into the observable spectrum showed eviden…
Optical and X-Ray Observations of GRB 060526: A Complex Afterglow Consistent with An Achromatic Jet Break
X. Dai, J. P. Halpern, N. D. Morgan +5
We obtained 98 R-band and 18 B, r', i' images of the optical afterglow of GRB 060526 (z=3.21) with the MDM 1.3m, 2.4m, and the PROMPT telescopes in Cerro Tololo over the 5 nights f…
Dark Matter Candidate from Conformality
P. H. Frampton
Abelian quiver gauge theories provide candidates for the conformality approach to physics beyond the standard model which possess novel cancellation mechanisms for quadratic diverg…
VI Photometry of Globular Clusters NGC6293 and NGC6541: The Formation of the Metal-Poor Inner Halo Globular Clusters
Jae-Woo Lee, Bruce W. Carney
We present VI photometry of the metal-poor inner halo globular clusters NGC6293 and NGC6541 using the planetary camera of the WFPC2 on board HST. Our color-magnitude diagrams of th…
Chemical Abundance Study of One Red Giant Star in NGC 5694 : A Globular Cluster with Dwarf Spheroidals' Chemical Signature?
Jae-Woo Lee, Mercedes Lopez-Morales, Bruce W. Carney
We report the abundance analysis of one red giant branch star in the metal-poor outer halo globular cluster NGC 5694. We obtain [Fe/H] = -1.93, based on the ionized lines, and our…
A Keck/HIRES Doppler Search for Planets Orbiting Metal-Poor Dwarfs. I. Testing Giant Planet Formation and Migration Scenarios
A. Sozzetti, G. Torres, D. W. Latham +5
We describe a high-precision Doppler search for giant planets orbiting a well-defined sample of metal-poor dwarfs in the field. This experiment constitutes a fundamental test of th…
The Uncertainties in the 22Ne + alpha-capture Reaction Rates and the Production of the Heavy Magnesium Isotopes in Asymptotic Giant Branch Stars of Intermediate Mass
A. Karakas, M. Lugaro, M. Wiescher +2
We present new rates for the 22Ne(alpha, n)25Mg and 22Ne(alpha,gamma)26Mg reactions, with uncertainties that have been considerably reduced compared to previous estimates, and we s…
Conformal Transformations and Accelerated Cosmologies
James L. Crooks, Paul H. Frampton
A cosmological theory that predicts a late-time accelerated attractor with a constant dark matter to dark energy ratio can be said to solve the Coincidence Problem. Such cosmologie…