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19932026
most citedObservational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

19.6k citations

Showing 2009Show all

244 papers · 1 filter

astro-ph.CO2009

Cosmic star formation history revealed by the AKARI, & Spatially-resolved spectroscopy of an E+A (Post-starburst) system

Tomotsugu Goto, the AKARI NEPD team, M. Yagi +1

We reveal cosmic star-formation history obscured by dust using deep infrared observation with the AKARI. A continuous filter coverage in the mid-IR wavelength (2.4, 3.2, 4.1, 7, 9,…

astro-ph.CO2009★ 7 cited

Environmental dependence of 8um luminosity functions of galaxies at z~0.8: Comparison between RXJ1716.4+6708 and the AKARI NEP deep field

Tomotsugu Goto, Yusei Koyama, T. Wada +20

We aim to reveal environmental dependence of infrared luminosity functions (IR LFs) of galaxies at z~0.8 using the AKARI satellite. We construct restframe 8um IR LFs in the cluster…

astro-ph.GA2009★ 51 cited

Neutral Gas Outflows and Inflows in Infrared-Faint Seyfert Galaxies

Hannah B. Krug, David S. N. Rupke, Sylvain Veilleux

Previous studies of the Na I D interstellar absorption line doublet have shown that galactic winds occur in most galaxies with high infrared luminosities. However, in infrared-brig…

astro-ph.EP2009★ 7 cited

Albedo heterogeneity on the surface of (1943) Anteros

Joseph Masiero

We have investigated the effect of rotation on the polarization of scattered light for the near-Earth asteroid (1943) Anteros using the Dual Beam Imaging Polarimeter on the Univers…

astro-ph.EP2009★ 46 cited

The Hayabusa Spacecraft Asteroid Multi-Band Imaging Camera: AMICA

Masateru Ishiguro, Ryosuke Nakamura, David J. Tholen +12

The Hayabusa Spacecraft Asteroid Multiband Imaging Camera (AMICA) has acquired more than 1400 multispectral and high-resolution images of its target asteroid, 25143 Itokawa, since…

astro-ph.CO2009★ 416 cited

The X-ray to optical-UV luminosity ratio of X-ray selected Type 1 AGN in XMM-COSMOS

E. Lusso, A. Comastri, C. Vignali +29

We present a study of the X-ray to optical properties of a sample of 545 X-ray selected Type 1 AGN, from the XMM-COSMOS survey, over a wide range of redshifts ($0.04<\z<4.25$) and…

astro-ph.IM2009★ 47 cited

Spectro-Perfectionism: An Algorithmic Framework for Photon Noise-Limited Extraction of Optical Fiber Spectroscopy

Adam S. Bolton, David J. Schlegel

We describe a new algorithm for the "perfect" extraction of one-dimensional spectra from two-dimensional (2D) digital images of optical fiber spectrographs, based on accurate 2D fo…

astro-ph.SR2009

SpeX Spectroscopy of Unresolved Very Low-Mass Binaries. I. Identification of Seventeen Candidate Binaries Straddling the L Dwarf/T Dwarf Transition

Adam J. Burgasser, Kelle L. Cruz, Michael Cushing +5

We report the identification of 17 candidate brown dwarf binaries whose components straddle the L dwarf/T dwarf transition. These sources were culled from a large near-infrared spe…

astro-ph.SR2009★ 66 cited

SDSS J141624.08+134826.7: A Nearby Blue L Dwarf From the Sloan Digital Sky Survey

Brendan P. Bowler, Michael C. Liu, Trent J. Dupuy

We present the discovery of a bright (J = 13.1 mag) nearby L6 dwarf found in a search for L-type ultracool subdwarfs in the Sloan Digital Sky Survey (SDSS) Data Release 7. SDSS J14…

astro-ph.GA2009★ 20 cited

HST/NICMOS observations of the GLIMPSE9 stellar cluster

Maria Messineo, Donald F. Figer, Ben Davies +4

We present HST/NICMOS photometry, and low-resolution K-band spectra of the GLIMPSE9 stellar cluster. The newly obtained color-magnitude diagram shows a cluster sequence with H-Ks =…

astro-ph.CO2009★ 29 cited

An Extremely Deep Wide-Field Near-Infrared Survey: Bright Galaxy Counts and Local Large Scale Structure

R. C. Keenan, L. Trouille, A. J. Barger +2

We present a deep, wide-field near-infrared (NIR) survey over five widely separated fields at high Galactic latitude covering a total of ~ 3 deg^2 in J, H, and Ks. The deepest area…

astro-ph.CO2009★ 20 cited

Two Moderate-Redshift Analogs to Compact Massive Early-Type Galaxies at High Redshifts

Alan Stockton, Hsin-Yi Shih, Kirsten Larson

From a search of a portion of the sky covered by the SDSS and UKIDSS databases, we have located 2 galaxies at z~0.5 that have properties similar to those of the luminous passive co…

astro-ph.CO2009

The Space Density of Compton-thick AGN

E. Treister, C. M. Urry, C. Cardamone +3

We constrain the number density and evolution of Compton-thick Active Galactic Nuclei (AGN), and their contribution to the extragalactic X-ray background. In the local Universe we…

astro-ph.EP2009★ 32 cited

The California Planet Survey II. A Saturn-Mass Planet Orbiting the M Dwarf Gl649

John Asher Johnson, Andrew W. Howard, Geoffrey W. Marcy +6

We report precise Doppler measurements of the nearby (d = 10.34 pc) M dwarf Gl649 that reveal the presence of a planet with a minimum mass Msini = 0.328 Mjup in an eccentric (e = 0…

astro-ph.GA2009★ 138 cited

Molecular Rings and the Thickness of Star-Forming Clouds

Christopher N. Beaumont, Jonathan P. Williams

The winds and radiation from massive stars clear out large cavities in the interstellar medium. These bubbles, as they have been called, impact their surrounding molecular clouds a…

astro-ph.GA2009★ 19 cited

Discerning the Form of the Dense Core Mass Function

Jonathan J. Swift, Christopher N. Beaumont

We investigate the ability to discern between lognormal and powerlaw forms for the observed mass function of dense cores in star forming regions. After testing our fitting, goodnes…

hep-ph2009★ 356 cited

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data

S. Actis, A. Arbuzov, G. Balossini +53

We present the achievements of the last years of the experimental and theoretical groups working on hadronic cross section measurements at the low energy e+e- colliders in Beijing,…

astro-ph.SR2009

Testing Models with Brown Dwarf Binaries

Trent J. Dupuy, Michael C. Liu

We have been using Keck laser guide star adaptive optics to monitor the orbits of ultracool binaries, providing dynamical masses at lower luminosities and temperatures than previou…

astro-ph.EP2009★ 211 cited

Retired A Stars and Their Companions. III. Comparing the Mass-Period Distributions of Planets Around A-Type Stars and Sun-Like Stars

Brendan P. Bowler, John Asher Johnson, Geoffrey W. Marcy +8

We present an analysis of ~5 years of Lick Observatory radial velocity measurements targeting a uniform sample of 31 intermediate-mass subgiants (1.5 < M*/Msun < 2.0) with the goal…

astro-ph.SR2009★ 68 cited

Discovery of a Young L Dwarf Binary, SDSS J224953.47+004404.6AB

K. N. Allers, Michael C. Liu, Trent J. Dupuy +1

We report discovery of a young 0.32" L dwarf binary, SDSS J2249+0044AB, found as the result of a Keck LGSAO imaging survey of young field brown dwarfs. Weak K, Na, and FeH features…

hep-ex2009★ 149 cited

Observation of a charmonium-like enhancement in the gamma gamma --> omega J/psi process

The Belle Collaboration, S. Uehara

We report the results of a search for a charmonium-like state produced in the process gamma gamma --> omega J/psi in the 3.9-4.2 GeV/c^2 mass region. We observe a significant enhan…

hep-ex2009★ 131 cited

Evidence for a new resonance and search for the Y(4140) in

The Belle Collaboration, C. P. Shen

The process $γγ\to ϕ\jpsi$ is measured for $ϕ\jpsi$ masses between threshold and 5 GeV/, using a data sample of 825 fb collected with the Belle detector. A narrow…

astro-ph.CO2009★ 18 cited

Adaptive Optics Imaging of a Massive Galaxy Associated with a Metal-rich Absorber

Mark R. Chun, Varsha P. Kulkarni, Soheila Gharanfoli +1

The damped and sub-damped Lyman-alpha absorption line systems in quasar spectra are believed to be produced by intervening galaxies. However, the connection of quasar absorbers to…

physics.ins-det2009★ 1.2k cited

Design and Construction of the BESIII Detector

The BESIII Collaboration

This paper will discuss the design and construction of BESIII, which is designed to study physics in the tau-charm energy region utilizing the new high luminosity BEPCII double rin…