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SuperMALT: Physical and Chemical Properties of Massive and Dense Clumps

Published online by Cambridge University Press:  04 September 2018

Sudeep Neupane ,
Guido Garay ,
Yanett Contreras  and
SuperMALT Team
Sudeep Neupane
Affiliation:
Department of Astronomy, Universidad de Chile, Casilla 36D, Santiago, Chile Email: sneupane@das.uchile.cl
Guido Garay
Affiliation:
Department of Astronomy, Universidad de Chile, Casilla 36D, Santiago, Chile Email: sneupane@das.uchile.cl
Yanett Contreras
Affiliation:
Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden
SuperMALT Team
Affiliation:
http://home.strw.leidenuniv.nl/~ycontreras/supermalt.html
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Abstract

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The SuperMALT survey is observing 76 MALT90 clumps at different evolutionary stages (from pre-stellar or quiescent to HII) in high excitation molecular lines and key isotopomers using the Apex 12m telescope with an angular resolution of ∼20” and a velocity resolution of ∼0.1 km/s. The aim of this survey is to determine the physical, chemical, and kinematical properties of the gas within clumps as they evolve. Here we report some preliminary results based on observations of the J=3-2 & 4-3 lines of HNC, HCN, HCO+, N2H+ and of the J=3-2 line of the isotopologue H13CO+. We find that the morphologies and line profiles vary with the evolutionary stage of the clumps. The average line width increases from quiescent to HII clumps while line ratios show hint of chemical differences among the various evolutionary stages.

Keywords

ISM: cloudsISM: moleculesISM: evolutionline: profiles
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S332: Astrochemistry VII: Through the Cosmos from Galaxies to Planets , March 2017 , pp. 254 - 260
Copyright
Copyright © International Astronomical Union 2018 

References

Benjamin, Robert A., Churchwell, E., Babler, Brian L., et al., 2003, PASP, 115, 953Google Scholar
Carey, S. J., Noriega-Crespo, A., Mizuno, D. R., et al., 2009, PASP, 121, 76Google Scholar
Contreras, Y., Rathborne, Jill M., Guzman, A., et al., 2017, MNRAS, 466, 340Google Scholar
Faúndez, S., Bronfman, L., Garay, G., Chini, R., Nyman, L., & May, J., 2004 ApJ, 426, 97Google Scholar
Foster, Jonathan B., Jackson, James M., Barnes, Peter J., et al., 2011, ApJ, 197, 25Google Scholar
Garay, G., Faúndez, S., Mardones, D., Bronfman, L., Chini, R., & Nyman, L., 2004, ApJ, 610, 313Google Scholar
Guzmn, Andrs E., Sanhueza, P., Contreras, Y., et al., 2015, ApJ, 815, 130Google Scholar
Jackson, J. M., Rathborne, J. M., Foster, J. B., et al., 2013, PASP, 30, 57Google Scholar
Molinari, S., Swinyard, B., Bally, J., Barlow, M., et al., 2010, PASP, 122, 314Google Scholar
Rathborne, J. M., Whitaker, J. S., & Jackson, J. M., 2016, PASP, 33, 30Google Scholar
Schuller, F., Menten, K. M., Contreras, Y., et al., 2009, A&A, 504, 415Google Scholar
Schoier, F. L., van der Tak, F. F. S., et al., 2005, A&A, 432, 369Google Scholar