Hydrides in young stellar objects: Radiation tracers in a protostar-disk-outflow system

Benz, A. O.; Bruderer, S.; Dishoeck, E. F. van; Stäuber, P.; Wampfler, S. F.; Melchior, M.; Dedes, C.; Wyrowski, F.; Doty, S. D.; Tak, F. F. S. van der; Bächtold, W.; Csillaghy, A.; Megej, A.; Monstein, C.; Soldati, Mauro; Bachiller, R.; Baudry, A.; Benedettini, M.; Bergin, Edwin A.; Bjerkeli, P.; Blake, Geoffrey A.; Bontemps, Sylvain; Braine, J.; Caselli, P.; Cernicharo, J.; Codella, C.; Daniel, F.; Giorgio, A. M. Di; Dieleman, P.; Dominik, C.; Encrenaz, P.; Fich, M.; Fuente, A.; Giannini, T.; Goicoechea, J. R.; Graauw, Th. de; Helmich, Frank; Herczeg, G. J.; Herpin, Fabrice; Hogerheijde, M. R.; Jacq, T.; Jellema, Willem; Johnstone, Doug; Jørgensen, J. K.; Kristensen, L. E.; Larsson, Bengt; Lis, D.; Liseau, R.; Marseille, M.; McCoey, C.; Melnick, Gary J.; Neufeld, David A.; Nisini, B.; Olberg, M.; Ossenkopf, V.; Parise, B.; Pearson, J. C.; Plume, R.; Risacher, C.; Santiago-García, J.; Saraceno, P.; Schieder, R.; Shipman, R.; Stützki, J.; Tafalla, M.; Tielens, A. G. G. M.; Kempen, T. A. van; Visser, R.; Yıldız, U. A.

doi:10.1051/0004-6361/201015111

Cited by 83 publications

(46 citation statements)

References 26 publications

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“…As mentioned earlier, many small molecules have their first few rotational transitions at these higher frequencies, and surveys with HIFI resulted in the first reported detections of SH + (Benz et al 2010 . Additionally, full spectral line surveys provided robust constraints on the excitation conditions and populations of larger molecules (>5 atoms) in a variety of extraordinary molecular sources such as SgrB2(N) ) and Orion KL (Crockett et al 2014).…”

Section: Spectral Line Survey and Glycolaldehyde (Hc(o)ch 2 Oh)mentioning

confidence: 73%

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS

McGuire

Brogan

Hunter

et al. 2018

ApJL

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We present the first results of a pilot program to conduct an Atacama Large Millimeter Array (ALMA) band10 spectral line survey of the high-mass star-forming region NGC 6334I. The observations were taken in exceptional weather conditions (0.19 mm precipitable water) with typical system temperatures T sys <950K at ∼890GHz. A bright, bipolar north-south outflow is seen in HDO and CS emission, driven by the embedded massive protostar MM1B. This has allowed, for the first time, a direct comparison of the thermal water in this outflow to the location of water maser emission from prior 22GHz Very Large Array observations. The maser locations are shown to correspond to the sites along the outflow cavity walls, where high-velocity gas impacts the surrounding material. We also compare our new observations to prior Herschel Heterodyne Instrument for the Far-infrared (HIFI) spectral line survey data of this field, detecting an order of magnitude more spectral lines (695 versus 65) in the Atacama Large Millimeter/submillimeter Array (ALMA) data. We focus on the strong detections of the complex organic molecule glycolaldehyde (HC(O)CH 2 OH) in the ALMA data that is not detected in the heavily beamdiluted HIFI spectra. Finally, we stress the need for dedicated THz laboratory spectroscopy to support and exploit future high-frequency molecular line observations with ALMA.

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Section: Spectral Line Survey and Glycolaldehyde (Hc(o)ch 2 Oh)mentioning

confidence: 73%

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS

McGuire

Brogan

Hunter

et al. 2018

ApJL

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“…Submillimeter spectra of H 3 O + are usually observed from warm and dense star-forming regions, where hydronium is one of the most abundant molecules [32]. Up to now deuterated hydronium was not observed from the interstellar medium.…”

Section: Discussionmentioning

confidence: 99%

Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

2011

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We study the sensitivity of the microwave and submillimeter transitions of the isotopologues of hydronium to the variation of the electron-to-proton mass ratio µ. These sensitivities are enhanced for the low-frequency mixed inversion-rotational transitions. The lowest frequency transition (6.6 GHz) takes place for isotopologue H 2 DO + and the respective sensitivity to µ variation is close to 200. This is about two orders of magnitude larger than the sensitivity of the inversion transition in ammonia, which is currently used for the search of µ variation in astrophysics.

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“…The SH + radical ion, sulfanylium, was not detected in the interstellar medium (ISM) until as late as 2010 [56]. It is however, an important tracer of gas condensations in dense regions and also probes the warm surface layers of photo-dominated regions (PDR) [57].…”

Section: Single-photon Double Ionization: Hementioning

confidence: 99%

PAMOP Project: Computations in Support of Experiments and Astrophysical Applications

McLaughlin

Ballance

Pindzola

et al. 2016

High Performance Computing in Science and Engineering ´16

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Our computation effort is primarily concentrated on support of current and future measurements being carried out at various synchrotron radiation facilities around the globe, and photodissociation computations for astrophysical applications. In our work we solve the Schrödinger or Dirac equation for the appropriate collision problem using the R-matrix or R-matrix with pseudo-states approach from first principles. The time dependent close-coupling (TDCC) method is also used in our work. A brief summary of the methodology and ongoing developments implemented in the R-matrix suite of Breit-Pauli and Dirac-Atomic R-matrix codes (DARC) is presented.

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Hydrides in young stellar objects: Radiation tracers in a protostar-disk-outflow system

Cited by 83 publications

References 26 publications

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS

Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

PAMOP Project: Computations in Support of Experiments and Astrophysical Applications

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Hydrides in young stellar objects: Radiation tracers in a protostar-disk-outflow system

Cited by 83 publications

References 26 publications

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH2OH) and a New Compact Bipolar Outflow in HDO and CS

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH2OH) and a New Compact Bipolar Outflow in HDO and CS

Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

PAMOP Project: Computations in Support of Experiments and Astrophysical Applications

Contact Info

Product

Resources

About

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS

First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I: Detections of Glycolaldehyde (HC(O)CH₂OH) and a New Compact Bipolar Outflow in HDO and CS