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astro-ph.GA2010★ 26 cited

The Redshift Search Receiver 3 mm Wavelength Spectra of 10 Galaxies

Ronald L. Snell, Gopal Narayanan, Min S. Yun +5

The 3 mm wavelength spectra of 10 galaxies have been obtained at the Five College Radio Astronomy Observatory using a new, very broadband receiver and spectrometer, called the Reds…

astro-ph.EP2010★ 82 cited

The upper atmosphere of the exoplanet HD209458b revealed by the sodium D lines: Temperature-pressure profile, ionization layer, and thermosphere

A. Vidal-Madjar, D. K. Sing, A. Lecavelier des Etangs +6

A complete reassessment of the HST observations of the transits of the extrasolar planet HD209458b has provided a transmission spectrum of the atmosphere over a wide range of wavel…

astro-ph.GA2010★ 39 cited

First Interferometric Images of the 36 GHz Methanol Masers in the DR21 Complex

Vincent L. Fish, Talitha C. Muehlbrad, Preethi Pratap +4

Class I methanol masers are believed to be produced in the shock-excited environment around star-forming regions. Many authors have argued that the appearance of various subsets of…

astro-ph.SR2010★ 77 cited

An Interferometric Spectral-line Survey of IRC+10216 in the 345 GHz Band

Nimesh A. Patel, Ken H. Young, Carl A. Gottlieb +10

We report a spectral-line survey of the extreme carbon star IRC+10216 carried out between 293.9 and 354.8 GHz with the Submillimeter Array. A total of 442 lines were detected, more…

astro-ph.EP2010★ 71 cited

Qatar-1b: a hot Jupiter orbiting a metal-rich K dwarf star

K. A. Alsubai, N. R. Parley, D. M. Bramich +18

We report the discovery and initial characterisation of Qatar-1b, a hot Jupiter orbiting a metal-rich K dwarf star, the first planet discovered by the Alsubai Project exoplanet tra…

astro-ph.CO2010★ 30 cited

HerMES: SPIRE/Sub-millimetre Emission from Radio Selected AGN

N. Seymour, M. Symeonidis, M. Page +1

We examine the rest-frame far-infrared emission from powerful radio sources with 1.4GHz luminosity densities of 25<=log(L_1.4/WHz^-1)<=26.5 in the extragalactic Spitzer First Look…

astro-ph.SR2010★ 73 cited

Direct Evidence for an Enhancement of Helium in Giant Stars in Omega Centauri

A. K. Dupree, Jay Strader, Graeme H. Smith

The double main sequence identified in the globular cluster Omega Centauri has been interpreted using isochrones to indicate a large variation in the abundance of helium. If true,…

astro-ph.GA2010★ 262 cited

Water in Star-Forming Regions with the Herschel Space Observatory (WISH): Overview of key program and first results

E. F. van Dishoeck, L. E. Kristensen, A. O. Benz +12

`Water In Star-forming regions with Herschel' (WISH) is a key program on the Herschel Space Observatory designed to probe the physical and chemical structure of young stellar objec…

astro-ph.SR2010★ 280 cited

Transitional and Pre-Transitional disks: Gap Opening by Multiple Planets?

Zhaohuan Zhu, Richard P. Nelson, Lee Hartmann +2

We use 2D hydrodynamic simulations of viscous disks to examine whether dynamically-interacting multiple giant planets can explain the large gaps (spanning over one order of magnitu…

astro-ph.CO2010★ 96 cited

The Submillimeter Array 1.3 mm line survey of Arp 220

S. Martin, M. Krips, J. Martin-Pintado +7

We present the first aperture synthesis unbiased spectral line survey toward an extragalactic object. The survey covered the 40 GHz frequency range between 202 and 242 GHz of the 1…

astro-ph.CO2010★ 32 cited

Scaling Rrelation in two situations of extreme mergers

Elena Rasia, Pasquale Mazzotta, August Evrard +3

Clusters of galaxies are known to be dynamically active systems, yet X-ray studies of the low redshift population exhibit tight scaling laws. In this work, we extend previous studi…

astro-ph.HE2010★ 61 cited

The Optical Afterglow and z=0.92 Early-type Host Galaxy of the Short GRB 100117A

Wen-fai Fong, Edo Berger, Ryan Chornock +6

We present the discovery of the optical afterglow and early-type host galaxy of the short-duration GRB 100117A. The faint afterglow is detected 8.3 hr after the burst with r_AB = 2…

astro-ph.IM2010★ 4 cited

1.2 Meter Shielded Cassegrain Antenna for Close-Packed Radio Interferometer

Patrick M. Koch, Philippe Raffin, Yau-De Huang +17

Interferometric millimeter observations of the cosmic microwave background and clusters of galaxies with arcmin resolutions require antenna arrays with short spacings. Having all a…

astro-ph.CO2010★ 74 cited

Do spectra improve distance measurements of Type Ia supernovae?

Stéphane Blondin, Kaisey S. Mandel, Robert P. Kirshner

[Abridged] We investigate the use of a wide variety of spectroscopic measurements to determine distances to low-redshift Type Ia supernovae (SN Ia). We consider linear models for p…

astro-ph.CO2010★ 41 cited

Subtraction of point sources from interferometric radio images through an algebraic forward modeling scheme

G. Bernardi, D. A. Mitchell, S. M. Ord +4

We present a method for subtracting point sources from interferometric radio images via forward modeling of the instrument response and involving an algebraic nonlinear minimizatio…

astro-ph.SR2010★ 187 cited

A Spitzer IRS Study of Infrared Variability in Transitional and Pre-Transitional Disks around T Tauri Stars

C. Espaillat, E. Furlan, P. D'Alessio +5

We present a Spitzer IRS study of variability in 14 T Tauri stars in the Taurus and Chamaeleon star-forming regions. The sample is composed of transitional and pre-transitional obj…

astro-ph.GA2010★ 91 cited

Observational Constraints on Submillimeter Dust Opacity

Yancy L. Shirley, Tracy L. Huard, Klaus M. Pontoppidan +4

Infrared extinction maps and submillimeter dust continuum maps are powerful probes of the density structure in the envelope of star-forming cores. We make a direct comparison betwe…

astro-ph.SR2010★ 44 cited

The widespread occurence of water vapor in the circumstellar envelopes of carbon-rich AGB stars: first results from a survey with Herschel/HIFI

D. A. Neufeld, E. González-Alfonso, G. Melnick +16

We report the preliminary results of a survey for water vapor in a sample of eight C stars with large mid-IR continuum fluxes: V384 Per, CIT 6, V Hya, Y CVn, IRAS 15194-5115, V Cyg…

astro-ph.SR2010★ 28 cited

A Panchromatic View OF NGC 602: Time-Resolved Star Formation with the Hubble and Spitzer Space Telescopes

Lynn Redding Carlson, Marta Sewilo, Margaret Meixner +16

We present the photometric catalogs for the star-forming cluster NGC 602 in the wing of the Small Magellanic Cloud covering a range of wavelengths from optical HST/ACS (F555W, F814…

astro-ph.EP2010★ 32 cited

Transit Timing Variation Analysis of OGLE-TR-132b with Seven New Transits

Elisabeth R. Adams, Mercedes Lopez-Morales, James L. Elliot +2

We report the results of the first transit timing variation (TTV) analysis of the very hot Jupiter OGLE-TR-132b, using ten transits collected over a seven-year period. Our analysis…

astro-ph.GA2010★ 184 cited

Modeling the Magnetic Field in the Galactic Disk using New Rotation Measure Observations from the Very Large Array

Cameron Van Eck, Jo-Anne Brown, Jeroen Stil +8

We have determined 194 Faraday rotation measures (RMs) of polarized extragalactic radio sources using new, multi-channel polarization observations at frequencies around 1.4 GHz fro…

astro-ph.CO2010★ 62 cited

The ACS Fornax Cluster Survey. X. Color Gradients of Globular Cluster Systems in Early-Type Galaxies

Chengze Liu, Eric W. Peng, Andres Jordan +4

We use the largest homogeneous sample of globular clusters (GCs), drawn from the ACSVCS and ACSFCS, to investigate the color gradients of GC systems in 76 early-type galaxies. We f…

astro-ph.CO2010★ 2 cited

The stellar and hot gas content of low-mass galaxy clusters

Michael L. Balogh, Pasquale Mazzotta, Richard G. Bower +4

We analyse the stellar and hot gas content of 18 nearby, low-mass galaxy clusters, detected in redshift space and selected to have a dynamical mass 3E14<M/Msun<6E14, as measured fr…

astro-ph.SR2010★ 57 cited

Millimeter Imaging of the beta Pictoris Debris Disk: Evidence for a Planetesimal Belt

David J. Wilner, Sean M. Andrews, A. Meredith Hughes

We present observations at 1.3 millimeters wavelength of the beta Pictoris debris disk with beam size 4.3 x 2.6 arcsec (83 x 50 AU) from the Submillimeter Array. The emission shows…