Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.6k papers
- University of California, BerkeleyUS2.5k papers
- The Ohio State UniversityUS2.3k papers
- University of ArizonaUS2.1k papers
- Lawrence Berkeley National LaboratoryUS2.1k papers
- SLAC National Accelerator LaboratoryUS2k papers
- University of California, IrvineUS2k papers
- Yale UniversityUS1.9k papers
- University of Wisconsin–MadisonUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- McGill UniversityCA1.9k papers
- University of ChicagoUS1.9k papers
196 papers · 2 filters
The Halpha-based Star Formation Rate Density of the Universe at z=0.84
Víctor Villar, Jesús Gallego, Pablo G. Pérez-González +5
We present the results of an Halpha near-infrared narrow-band survey searching for star-forming galaxies at redshift z=0.84. This work is an extension of our previous narrow-band s…
Five Planets Orbiting 55 Cancri
Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler +9
We report 18 years of Doppler shift measurements of a nearby star, 55 Cancri, that exhibit strong evidence for five orbiting planets. The four previously reported planets are stron…
Atypical Thermonuclear Supernovae from Tidally Crushed White Dwarfs
S. Rosswog, E. Ramirez-Ruiz, W. R. Hix
Suggestive evidence has accumulated that intermediate mass black holes (IMBH) exist in some globular clusters. As stars diffuse in the cluster, some will inevitable wander sufficie…
The color excess of quasars with intervening DLA systems- Analysis of the SDSS data release five
Giovanni Vladilo, Jason X. Prochaska, Arthur M. Wolfe
We analyzed the spectroscopic and photometric database of the 5th data release of the Sloan Digital Sky Survey (SDSS) to search for evidence of the quasar reddening produced by dus…
Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023
E. Noordermeer, M. R. Merrifield, L. Coccato +9
We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer d…
Creation of the X-ray Cavity Jet and its Radio Lobe in M87/Virgo with Cosmic Rays; Relevance to Relic Radio Sources
William G. Mathews, Fabrizio Brighenti
Young cavities in the X-ray emitting hot gas in galaxy clusters are often filled with radio synchrotron emission and it is widely thought that the cavities are inflated by these co…
Trouble for AGN Feedback ? The puzzle of the core of the Galaxy Cluster AWM 4
Fabio Gastaldello, David A. Buote, Fabrizio Brighenti +1
The core of the relaxed cluster AWM 4 is characterized by a unique combination of properties which defy a popular scenario for ANG heating of cluster cores. A flat inner temperatur…
Discovery of an extended debris disk around the F2V star HD 15745
Paul Kalas, Gaspard Duchene, Michael P. Fitzgerald +1
Using the Advanced Camera for Surveys aboard the Hubble Space Telescope, we have discovered dust-scattered light from the debris disk surrounding the F2V star HD 15745. The circums…
A celestial gamma-ray foreground due to the albedo of small solar system bodies and a remote probe of the interstellar cosmic ray spectrum
Igor V. Moskalenko, Troy A. Porter, Seth W. Digel +2
We calculate the gamma-ray albedo flux from cosmic-ray (CR) interactions with the solid rock and ice in Main Belt asteroids (MBAs), Jovian and Neptunian Trojan asteroids, and Kuipe…
The connection between globular cluster systems and their host galaxy and environment: a case study of the isolated elliptical NGC 821
Lee R. Spitler, Duncan A. Forbes, Jay Strader +2
In an effort to probe the globular cluster (GC) system of an isolated elliptical galaxy, a comprehensive analysis of the NGC 821 GC system was performed. New imaging from the WIYN…
Metallicity of the intergalactic medium using pixel statistics: IV. Oxygen
Anthony Aguirre, Corey Dow-Hygelund, Joop Schaye +1
We have studied the abundance of oxygen in the IGM by analyzing OVI, CIV, SiIV, and HI pixel optical depths derived from a set of high-quality VLT and Keck spectra of 17 QSOs at 2.…
The Environment on few Mpc scales of Infrared Luminous Galaxies at Redshifts z~1
D. Marcillac, G. H. Rieke, C. Papovich +13
We investigate the environment of infrared luminous galaxies (L[8-1000 mL$_{\sun}$). We focus on the redshift range 0.7 z 1, where these galaxie…
The dark matter halo of NGC 1399 - CDM or MOND?
T. Richtler, Y. Schuberth, M. Hilker +3
Central galaxies in galaxy clusters may be key discriminants in the competition between the cold dark matter (CDM) paradigm and modified Newtonian dynamics (MOND). We investigate t…
Hydrodynamic Simulations of Unevenly Irradiated Jovian Planets
Jonathan Langton, Gregory Laughlin
We employ a two-dimensional grid-based hydrodynamic model to simulate upper atmospheric dynamics on extrasolar giant planets. Our model is well-suited to simulate the dynamics of t…
An infrared study of the double nucleus in NGC3256
P. Lira, V. Gonzalez-Corvalan, M. Ward +1
We present new resolved near and mid-IR imaging and N-band spectroscopy of the two nuclei in the merger system NGCA3256, the most IR luminous galaxy in the nearby universe. The res…
Eclipsing binary stars in the Large and Small Magellanic Clouds from the MACHO project: The Sample
Lorenzo Faccioli, Charles Alcock, Kem Cook +3
We present a new sample of 4634 eclipsing binary stars in the Large Magellanic Cloud (LMC), expanding on a previous sample of 611 objects and a new sample of 1509 eclipsing binary…
Models of Type I X-ray Bursts from GS 1826-24: A Probe of rp-Process Hydrogen Burning
Alexander Heger, Andrew Cumming, Duncan K. Galloway +1
The X-ray burster GS 1826-24 shows extremely regular Type I X-ray bursts whose energetics and recurrence times agree well with thermonuclear ignition models. We present calculation…
Keck spectroscopy of globular clusters in the spiral galaxy NGC 2683
Robert N. Proctor, Duncan A. Forbes, Jean P. Brodie +1
We analyse Keck spectra of 24 candidate globular clusters (GCs) associated with the spiral galaxy NGC 2683. We identify 19 bona fide GCs based on their recession velocities, of whi…
Supernovae in Low-Redshift Galaxy Clusters: Observations by the Wise Observatory Optical Transient Search (WOOTS)
Avishay Gal-Yam, Dan Maoz, Puragra Guhathakurta +1
We describe the Wise Observatory Optical Transient Search (WOOTS), a survey for supernovae (SNe) and other variable and transient objects in the fields of redshift 0.06-0.2 Abell g…
The X-ray Properties of Moderate-redshift Galaxy Groups Selected by Association with Gravitational Lenses
C. D. Fassnacht, D. D. Kocevski, M. W. Auger +5
We present results from a systematic investigation of the X-ray properties of a sample of moderate redshift (0.3<z<0.6) galaxy groups. These groups were selected not by traditional…
Detection of faint companions through stochastic speckle discrimination
Szymon Gladysz, Julian C. Christou
We propose a new post-processing technique for the detection of faint companions from a sequence of adaptive optics corrected short exposures. The algorithm exploits the difference…
The SEGUE Stellar Parameter Pipeline. III. Comparison with High-Resolution Spectroscopy of SDSS/SEGUE Field Stars
C. Allende Prieto, T. Sivarani, T. C. Beers +14
We report high-resolution spectroscopy of 125 field stars previously observed as part of the Sloan Digital Sky Survey and its program for Galactic studies, the Sloan Extension for…
The SEGUE Stellar Parameter Pipeline. II. Validation with Galactic Globular and Open Clusters
Y. S. Lee, T. C. Beers, T. Sivarani +13
We validate the performance and accuracy of the current SEGUE (Sloan Extension for Galactic Understanding and Exploration) Stellar Parameter Pipeline (SSPP), which determines stell…
CN Bimodality at Low Metallicity: The Globular Cluster M53
Sarah L. Martell, Graeme H. Smith, Michael M. Briley
We present low resolution UV-blue spectroscopic observations of red giant stars in the globular cluster M53 ([Fe/H]=-1.84), obtained to study primordial abundance variations and de…