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Water deuteration and ortho-to-para nuclear spin ratio of H2 in molecular clouds formed via the accumulation of HI gas
K. Furuya, Y. Aikawa, U. Hincelin +4
We investigate the water deuteration ratio and ortho-to-para nuclear spin ratio of H2 (OPR(H2)) during the formation and early evolution of a molecular cloud, following the scenari…
Detection of extragalactic argonium, ArH, toward PKS~1830211
Holger S. P. Müller, Sébastien Muller, Peter Schilke +6
Argonium has recently been detected as a ubiquitous molecule in our Galaxy. Model calculations indicate that its abundance peaks at molecular fractions in the range of 1E-4 to 1E-3…
Tentative detection of ethylene glycol toward W51/e2 and G34.3+0.2
Julie M. Lykke, Cécile Favre, Edwin A. Bergin +1
How complex organic - and potentially prebiotic - molecules are formed in regions of low- and high-mass star-formation remains a central question in astrochemistry. In particular,…
The distribution of deuterated formaldehyde within Orion-KL
Cecile Favre, Edwin Bergin, Justin Neill +3
We report the first high angular resolution imaging (3.4\arcsec 3.0\arcsec) of deuterated formaldehyde (HDCO) toward Orion--KL, carried out with the Submillimeter Array (S…
Herschel observations of EXtra-Ordinary Sources: Analysis of the HIFI 1.2 THz Wide Spectral Survey Toward Orion KL II. Chemical Implications
Nathan R. Crockett, Edwin A. Bergin, Justin L. Neill +5
We present chemical implications arising from spectral models fit to the Herschel/HIFI spectral survey toward the Orion Kleinmann-Low nebula (Orion KL). We focus our discussion on…
The warm CO gas along the UV-heated outflow cavity walls: a possible interpretation for the Herschel/PACS CO spectra of embedded YSOs
Seokho Lee, Jeong-Eun Lee, Edwin A. Bergin
A fraction of the mid- (= 14--13 to = 24--23) CO emission detected by the \textit{Herschel}/PACS observations of embedded young stellar objects (YSOs) has been attributed…