Search Results - "Neufeld, D. A"
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Reevaluation of the Cosmic-Ray Ionization Rate in Diffuse Clouds
Published in The Astrophysical journal (01-10-2024)“…Abstract All current estimates of the cosmic-ray (CR) ionization rate rely on assessments of the gas density along the probed sight lines. Until now, these…”
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The Abundance of Carbon Dioxide Ice in the Quiescent Intracloud Medium
Published in The Astrophysical journal (20-01-2007)“…We present new observations with the Infrared Spectrograph on board the Spitzer Space Telescope of the solid-CO sub(2) absorption feature near 15 km in the…”
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CHEMICAL ANALYSIS OF A DIFFUSE CLOUD ALONG A LINE OF SIGHT TOWARD W51: MOLECULAR FRACTION AND COSMIC-RAY IONIZATION RATE
Published in The Astrophysical journal (20-10-2012)“…Absorption lines from the molecules OH super(+), H sub(2)O+, and (ProQuest: Formulae and/or non-USASCII text omitted) have been observed in a diffuse molecular…”
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Detection of Acetylene toward Cepheus A East with Spitzer
Published in The Astrophysical journal (10-12-2007)“…The first map of interstellar acetylene (C sub(2)H sub(2)) has been obtained with the Infrared Spectrograph on board the Spitzer Space Telescope. A spectral…”
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Constraints on the Cosmic-Ray Ionization Rate in the z ∼ 2.3 Lensed Galaxies SMM J2135-0102 and SDP 17b from Observations of OH+ and H2O
Published in The Astrophysical journal (01-10-2018)“…Cosmic rays are predominantly accelerated in shocks associated with star formation such as supernova remnants and stellar wind bubbles, so the cosmic-ray flux…”
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Implications of Submillimeter Wave Astronomy Satellite Observations for Interstellar Chemistry and Star Formation
Published in The Astrophysical journal (20-08-2000)Get full text
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Detection of Water in the Shocked Gas Associated with IC 443: Constraints on Shock Models
Published in The Astrophysical journal (20-02-2005)“…We have used the Submillimeter Wave Astronomy Satellite (SWAS) to observe the ground-state 1 sub(10) arrow right 1 sub(01) transition of ortho-H sub(2)O at 557…”
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Fully Sampled Maps of Ices and Silicates in Front of Cepheus A East with the Spitzer Space Telescope
Published in The Astrophysical journal (01-01-2008)“…We report the first fully sampled maps of the distribution of interstellar CO sub(2) ices, H sub(2)O ices, and total hydrogen nuclei, as inferred from the 9.7…”
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HyGAL: Characterizing the Galactic Interstellar Medium with Observations of Hydrides and Other Small Molecules. I. Survey Description and a First Look Toward W3(OH), W3 IRS5, and NGC 7538 IRS1
Published in The Astrophysical journal (01-05-2022)“…Abstract The HyGAL Stratospheric Observatory for Infrared Astronomy legacy program surveys six hydride molecules—ArH + , OH + , H 2 O + , SH, OH, and CH—and…”
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The H2O Spectrum of the Massive Protostar AFGL 2136 IRS 1 from 2 to 13 μm at High Resolution: Probing the Circumstellar Disk
Published in The Astrophysical journal (01-05-2020)“…We have observed the massive protostar AFGL 2136 IRS 1 in multiple wavelength windows in the near- to mid-infrared at high (∼3 km s−1) spectral resolution…”
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HERSCHEL/PACS SPECTROSCOPIC SURVEY OF PROTOSTARS IN ORION: THE ORIGIN OF FAR-INFRARED CO EMISSION
Published in The Astrophysical journal (01-02-2013)“…We present far-infrared (57-196 mu m) spectra of 21 protostars in the Orion molecular clouds. These were obtained with the Photo-detector Array Camera and…”
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Water Abundance in Molecular Cloud Cores
Published in The Astrophysical journal (20-08-2000)Get full text
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THE ABUNDANCE, ORTHO/PARA RATIO, AND DEUTERATION OF WATER IN THE HIGH-MASS STAR-FORMING REGION NGC 6334 I
Published in The Astrophysical journal (01-03-2013)“…(ProQuest: ... denotes formulae and/or non-USASCII text omitted) We present Herschel/HIFI observations of 30 transitions of water isotopologues toward the…”
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14
O[TINF]2[/TINF] in Interstellar Molecular Clouds
Published in The Astrophysical journal (20-08-2000)Get full text
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HYDROGEN CHLORIDE IN DIFFUSE INTERSTELLAR CLOUDS ALONG THE LINE OF SIGHT TO W31C (G10.6-0.4)
Published in The Astrophysical journal (10-04-2013)“…We report the detection of hydrogen chloride, HCl, in diffuse molecular clouds on the line of sight toward the star-forming region W31C (G10.6-0.4). The J =…”
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WATER ABSORPTION FROM GAS VERY NEAR THE MASSIVE PROTOSTAR AFGL 2136 IRS 1
Published in The Astrophysical journal (10-10-2013)“…We present ground-based observations of the [nu] sub(1) and [nu] sub(3) fundamental bands of H sub(2)O toward the massive protostar AFGL 2136 IRS 1,…”
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Tentative Detection of Molecular Oxygen in the ρ Ophiuchi Cloud
Published in The Astrophysical journal (10-09-2002)Get full text
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18
Bone growth is induced by nail transplantation in amputated proximal phalanges
Published in Calcified tissue international (01-11-1999)“…Mammals are able to regrow the tips of amputated fingers and toes. However, regrowth is limited to regions covered by, and is dependent upon, the presence of…”
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HYDROGEN FLUORIDE TOWARD LUMINOUS NEARBY GALAXIES: NGC 253 AND NGC 4945
Published in The Astrophysical journal (10-04-2014)“…We present the detection of hydrogen fluoride (HF) in two luminous nearby galaxies, NGC 253 and NGC 4945 using the Heterodyne Instrument for the Far-Infrared…”
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An ecosystem approach to planning for groundwater: The case of Waterloo Region, Ontario, Canada
Published in Hydrogeology journal (01-05-2000)“…Sustaining the human-ecological benefits of groundwater requires carefully planned strategies for reducing the cumulative risks posed by diverse human actions…”
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