185 citations · 1.4k across the 21 of their papers we have counts for
21 papers
A Herschel/HIFI Legacy Survey of HF and H2O in the Galaxy: Probing Diffuse Molecular Cloud Chemistry
P. Sonnentrucker, M. Wolfire, D. A. Neufeld +5
We combine Herschel observations of a total of 12 sources to construct the most uniform survey of HF and H2O in our Galactic disk. Both molecules are detected in absorption along a…
Herschel observations of interstellar chloronium. II - Detections toward G29.96-0.02, W49N, W51, and W3(OH), and determinations of the ortho-to-para and Cl/Cl isotopic ratios
David A. Neufeld, John H. Black, Maryvonne Gerin +13
We report additional detections of the chloronium molecular ion, HCl, toward four bright submillimeter continuum sources: G29.96, W49N, W51, and W3(OH). With the use of the…
Herschel observations of EXtraordinary Sources: Analysis of the full Herschel/HIFI molecular line survey of Sagittarius B2(N)
Justin L. Neill, Edwin A. Bergin, Dariusz C. Lis +18
A sensitive broadband molecular line survey of the Sagittarius B2(N) star-forming region has been obtained with the HIFI instrument on the Herschel Space Observatory, offering the…
Hydrogen Fluoride toward Luminous Nearby Galaxies: NGC 253 and NGC 4945
R. R. Monje, S. Lord, E. Falgarone +4
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 (HIFI) on board the Her…
Performance of the Caltech Submillimeter Observatory Dual-Color 180-720 GHz Balanced SIS Receivers
J. W. Kooi, R. A. Chamberlin, R. Monje +12
We report on balanced SIS receivers covering the astronomical important 180-720 GHz submillimeter atmospheric window. To facilitate remote observations and automated spectral line…
Hydrogen chloride in diffuse interstellar clouds along the line of sight to W31C (G10.6-0.4)
R. R. Monje, D. C. Lis, E. Roueff +5
We report the detection of hydrogen chloride, HCl, in diffuse molecular clouds on the line of sight towards the star-forming region W31C (G10.6-0.4). The J = 1-0 lines of the two s…
The Abundance, Ortho/Para Ratio, and Deuteration of Water in the High-Mass Star Forming Region NGC 6334 I
M. Emprechtinger, D. C. Lis, R. Rolffs +6
We present Herschel/HIFI observations of 30 transitions of water isotopologues toward the high-mass star forming region NGC 6334 I. The line profiles of H_2^{16}O, H_2^{17}O, H_2^{…
Hydrogen Fluoride in High-Mass Star-forming Regions
Martin Emprechtinger, Raquel R. Monje, Floris F. S. van der Tak +5
Hydrogen fluoride has been established to be an excellent tracer of molecular hydrogen in diffuse clouds. In denser environments, however, the HF abundance has been shown to be app…
Technology Development for the Caltech Submillimeter Observatory Balanced Receivers
J. W. Kooi, R. A. Chamberlin, R. Monje +3
The Caltech Submillimeter Observatory (CSO) is located on top of Mauna Kea, Hawaii, at an altitude of 4.2 km. The existing suite of facility heterodyne receivers covering the submi…
Discovery of Hydrogen Fluoride in the Cloverleaf Quasar at z = 2.56
R. R. Monje, T. G. Phillips, R. Peng +3
We report the first detection of hydrogen fluoride (HF) toward a high redshift quasar. Using the Caltech Submillimeter Observatory (CSO) we detect the HF J = 1 - 0 transition in ab…
Herschel observations of interstellar chloronium
David A. Neufeld, Evelyne Roueff, Ronald L. Snell +21
Using the Herschel Space Observatory's Heterodyne Instrument for the Far-Infrared (HIFI), we have observed para-chloronium (H2Cl+) toward six sources in the Galaxy. We detected int…
Herschel/HIFI Observations of Hydrogen Fluoride Toward Sagittarius B2(M)
R. R. Monje, M. Emprechtinger, T. G. Phillips +6
Herschel/HIFI observations have revealed the presence of widespread absorption by hydrogen fluoride (HF) J = 1-0 rotational transition, toward a number of Galactic sources. We pres…
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…
Nitrogen hydrides in interstellar gas: Herschel/HIFI observations towards G10.6-0.4 (W31C)
C. M. Persson, J. H. Black, J. Cernicharo +49
The HIFI instrument on board the Herschel Space Observatory has been used to observe interstellar nitrogen hydrides along the sight-line towards G10.6-0.4 in order to improve our u…
Detection of hydrogen fluoride absorption in diffuse molecular clouds with Herschel/HIFI: a ubiquitous tracer of molecular gas
P. Sonnentrucker, D. A. Neufeld, T. G. Phillips +47
We discuss the detection of absorption by interstellar hydrogen fluoride (HF) along the sight line to the submillimeter continuum sources W49N and W51. We have used Herschel's HIFI…
Herschel/HIFI measurements of the ortho/para ratio in water towards Sagittarius B2(M) and W31C
D. C. Lis, T. G. Phillips, P. F. Goldsmith +74
We present Herschel/HIFI observations of the fundamental rotational transitions of ortho- and para-HO and HO in absorption towards Sagittarius~B2(M) and W31C. The…
Herschel/HIFI observations of interstellar OH+ and H2O+ towards W49N: a probe of diffuse clouds with a small molecular fraction
D. A. Neufeld, J. R. Goicoechea, P. Sonnentrucker +50
We report the detection of absorption by interstellar hydroxyl cations and water cations, along the sight-line to the bright continuum source W49N. We have used Herschel's HIFI ins…
Excitation and Abundance of C3 in star forming cores:Herschel/HIFI observations of the sight-lines to W31C and W49N
B. Mookerjea, T. Giesen, J. Stutzki +47
We present spectrally resolved observations of triatomic carbon (C3) in several ro-vibrational transitions between the vibrational ground state and the low-energy nu2 bending mode…
Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4
Maryvonne Gerin, M. De Luca, John Black +50
We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.60.4 (W31C). We used the He…
Strong absorption by interstellar hydrogen fluoride: Herschel/HIFI observations of the sight-line to G10.6-0.4 (W31C)
D. A. Neufeld, P. Sonnentrucker, T. G. Phillips +45
We report the detection of strong absorption by interstellar hydrogen fluoride along the sight-line to the submillimeter continuum source G10.6-0.4 (W31C). We have used Herschel's…
Luminous HC3N line emission in NGC4418 - buried AGN or nascent starburst?
S. Aalto, R. Monje, S. Martin
IRAM 30m observations reveal that the deeply obscured IR-luminous galaxy NGC4418 has a rich molecular chemistry - including unusually luminous HC3N line emission. We furthermore de…