Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T05:30:14.206Z Has data issue: false hasContentIssue false
  • English
  • Français

Deuteration of formaldehyde - an important precursor of hydrogenated complex organic molecules - during star formation in our Galaxy

Published online by Cambridge University Press:  13 January 2020

Sarolta Zahorecz ,
Izaskun Jimenez-Serra ,
Leonardo Testi ,
Katharina Immer ,
Francesco Fontani ,
Paola Caselli ,
L. Viktor Toth ,
Ke Wang  and
Toshikazu Onishi
Sarolta Zahorecz
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Izaskun Jimenez-Serra
Affiliation:
School of Physics and Astronomy, Queen Mary University of London, Mile End Road, E1 4NS London, United Kingdom
Leonardo Testi
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching, Germany
Katharina Immer
Affiliation:
Joint Institute for VLBI ERIC, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Francesco Fontani
Affiliation:
INAF-Osservatorio Astrofisico di Arcetri, L.go E. Fermi 5, 50125 Firenze, Italy
Paola Caselli
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse 1, 85748 Garching, Germany
L. Viktor Toth
Affiliation:
Eötvös Loránd University, Dep., Pázmány P. sétány 1/A, 1117, Budapest, Hungary Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, H-1121 Budapest, Konkoly Thege Miklós út 15-17, Hungary
Ke Wang
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching, Germany
Toshikazu Onishi
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Formaldehyde (H2CO) and its deuterated forms can be produced both in the gas phase and on grain surfaces. However, the relative importance of these two chemical pathways is unclear. Our recent single dish observation of formaldehyde and its deuterated species suggests that they form mostly on grain surfaces although some gas-phase contribution is expected at the warm HMPO stage. Since the single dish beam is larger, and since these high-mass star-forming regions are clustered and complex, it is however unclear whether the emission arises from the protostellar sources or from starless/pre-stellar cores associated with them. Therefore, interferometric observations are needed to separate the emission originating from the small and dense cores, to disentangle their formation routes and then being able to use them as powerful diagnostic tools of the physical and chemical properties of high-mass star forming regions.

Keywords

astrochemistrymolecular dataISM: moleculesstars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 337 - 338
Copyright
© International Astronomical Union 2020 

References

Billade, B. et al. 2012, IEEE Trans. Sci, Terahertz . Tech., 2, 208 CrossRefGoogle Scholar
Sato, M. et al. 2014, ApJ, 793, 72 CrossRefGoogle Scholar
Su, Y.-N., et al. 2009, ApJ, 704, L5 CrossRefGoogle Scholar
Zahorecz, S., et al. 2017, A&A, 602, L3 Google Scholar