Search Results - "Shirley, Y. L."
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ALMA Observations of Starless Core Substructure in Ophiuchus
Published in The Astrophysical journal (01-04-2017)“…Compact substructure is expected to arise in a starless core as mass becomes concentrated in the central region likely to form a protostar. Additionally,…”
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The Initial Conditions of Clustered Star Formation. I. NH3 Observations of Dense Cores in Ophiuchus
Published in The Astrophysical journal (01-06-2009)“…We present combined interferometer and single dish telescope data of NH3 (J, K) = (1,1) and (2,2) emission toward the clustered star forming Ophiuchus B, C,…”
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AN ANALYSIS OF THE DEUTERIUM FRACTIONATION OF STAR-FORMING CORES IN THE PERSEUS MOLECULAR CLOUD
Published in The Astrophysical journal (01-03-2013)“…We have performed a pointed survey of N sub(2)D super(+) 2-1 and N sub(2)D super(+) 3-2 emission toward 64 N sub(2)H+-bright starless and protostellar cores in…”
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The Initial Conditions of Clustered Star Formation. III. The Deuterium Fractionation of the Ophiuchus B2 Core
Published in The Astrophysical journal (01-08-2010)“…We present N{sub 2}D{sup +} 3-2 (IRAM), and H{sub 2}D{sup +} 1{sub 11}-1{sub 10} and N{sub 2}H{sup +} 4-3 (JCMT) maps of the small cluster-forming Ophiuchus B2…”
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The Star Formation Rate-Dense Gas Relation in Galaxies as Measured by HCN(3-2) Emission
Published in The Astrophysical journal (10-07-2008)“…We present observations made with the 10 m Heinrich Hertz Submillimeter Telescope of HCN(3-2) emission from a sample of 30 nearby galaxies ranging in infrared…”
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Enhanced Dense Gas Fraction in Ultraluminous Infrared Galaxies
Published in The Astrophysical journal (20-12-2009)“…We present a detailed analysis of the relation between infrared luminosity and molecular line luminosity, for a variety of molecular transitions, using a…”
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Arcsecond-Scale Kinematic and Chemical Complexity in Cepheus A East
Published in The Astrophysical journal (10-05-2007)“…We present results from Submillimeter Array (SMA) observations of the star-forming region Cepheus A East at similar to 340 GHz (875 mu m) with 0.7"-2"…”
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Connecting Dense Gas Tracers of Star Formation in our Galaxy to High-z Star Formation
Published in The Astrophysical journal (20-12-2005)“…Observations have revealed prodigious amounts of star formation in starburst galaxies as traced by dust and molecular emission, even at large redshifts. Recent…”
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IRAS 16293–2422: Proper Motions, Jet Precession, the Hot Core, and the Unambiguous Detection of Infall
Published in The Astrophysical journal (10-10-2005)“…We present high spatial resolution observations of the multiple protostellar system IRAS 16293-2422 using the Submillimeter Array (SMA) at 300 GHz and the Very…”
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Modeling the Physical Structure of the Low-Density Pre-Protostellar Core Lynds 1498
Published in The Astrophysical journal (20-10-2005)“…Pre-protostellar cores likely represent the incipient stages of low-mass (-1 M sub( )) star formation. Lynds 1498 is a pre-protostellar core (PPC) and was one…”
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High resolution submillimeter observations of massive protostars
Published in Astrophysics and space science (2008)“…We describe results from recent Submillimeter Array observations of massive protostellar objects (CepheusA-East, NGC7538 IRS1, and G5.89-0.39) with resolutions…”
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Constraining the structure of the non-spherical pre-protostellar core L1544
Published in Monthly notices of the Royal Astronomical Society (01-05-2005)“…We present a study of the pre-protostellar core L1544. A series of self-consistent, three-dimensional continuum radiative transfer models is constructed. The…”
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THE BOLOCAM GALACTIC PLANE SURVEY. XIV. PHYSICAL PROPERTIES OF MASSIVE STARLESS AND STAR-FORMING CLUMPS
Published in The Astrophysical journal (10-05-2016)“…ABSTRACT We sort 4683 molecular clouds between 10° < < 65° from the Bolocam Galactic Plane Survey based on observational diagnostics of star formation…”
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Chemical evolution in the early phases of massive star formation. I
Published 18-03-2014“…A&A 563, A97 (2014) Understanding the chemical evolution of young (high-mass) star-forming regions is a central topic in star formation research. Chemistry is…”
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The Spitzer c2d survey of nearby dense cores. II. Discovery of a low-luminosity object in the evolved starless core L1521F
Published in The Astrophysical journal (20-09-2006)“…We present Spitzer Space Telescope observations of the "evolved starless core" L1521F that reveal the presence of a very low luminosity object (L < 0.07 L sub(…”
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CARMA Large Area Star Formation Survey: Observational Analysis of Filaments in the Serpens South Molecular Cloud
Published 17-07-2014“…2014, ApJ, 790, L19 We present the N2H+(J=1-0) map of the Serpens South molecular cloud obtained as part of the CARMA Large Area Star Formation Survey…”
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CARMA Large Area Star Formation Survey: Project Overview with Analysis of Dense Gas Structure and Kinematics in Barnard 1
Published 03-09-2014“…We present details of the CARMA Large Area Star Formation Survey (CLASSy), while focusing on observations of Barnard 1. CLASSy is a CARMA Key Project that…”
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The earliest phases of star formation - A Herschel key project. The thermal structure of low-mass molecular cloud cores
Published 08-01-2013“…The temperature and density structure of molecular cloud cores are the most important physical quantities that determine the course of the protostellar…”
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The Initial Conditions of Clustered Star Formation III. The Deuterium Fractionation of the Ophiuchus B2 Core
Published 23-06-2010“…We present N2D+ 3-2 (IRAM) and H2D+ 1_11 - 1_10 and N2H+ 4-3 (JCMT) maps of the small cluster-forming Ophiuchus B2 core in the nearby Ophiuchus molecular…”
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The Detection and Characterization of Centimeter Radio Continuum Emission from the Low-Mass Protostar L1014-IRS
Published in The Astrophysical journal (20-09-2007)“…Observations by the Cores to Disk Legacy Team with the Spitzer Space Telescope have identified a low-luminosity, mid-infrared source within the dense core,…”
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