Duarte-Cabral, A., Colombo, D., Urquhart, J. S., Ginsburg, A., Russeil, D., Schuller, F., Anderson, L. D., Barnes, P. J., Beltran, M. T., Beuther, H., Bontemps, S., Bronfman, L., Csengeri, T., Dobbs, C. L., Eden, D., Giannetti, A., Kauffmann, J., Mattern, M., Medina, S-N X., Menten, K. M., Lee, M-Y, Pettitt, A. R., Riener, M., Rigby, A. J., Traficante, A., Veena, V. S., Wienen, M., Wyrowski, F., Agurto, C., Azagra, F., Cesaroni, R., Finger, R., Gonzalez, E., Henning, T., Hernandez, A. K., Kainulainen, J., Leurini, S., Lopez, S., Mac-Auliffe, F., Mazumdar, P., Molinari, S., Motte, F., Muller, E., Nguyen-Luong, Q., Parra, R., Perez-Beaupuits, J-P, Montenegro-Montes, F. M., Moore, T. J. T., Ragan, S. E., Sanchez-Monge, A., Sanna, A., Schilke, P., Schisano, E., Schneider, N., Suri, S., Testi, L., Torstensson, K., Venegas, P., Wang, K. and Zavagno, A. (2021). The SEDIGISM survey: molecular clouds in the inner Galaxy. Mon. Not. Roy. Astron. Soc., 500 (3). S. 3027 - 3050. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

We use the (CO)-C-13(2-1) emission from the SEDIGISM (Structure, Excitation, and Dynamics of the Inner Galactic InterStellar Medium) high-resolution spectral-line survey of the inner Galaxy, to extract the molecular cloud population with a large dynamic range in spatial scales, using the Spectral Clustering for Interstellar Molecular Emission Segmentation (SCIMES) algorithm. This work compiles a cloud catalogue with a total of 10 663 molecular clouds, 10 300 of which we were able to assign distances and compute physical properties. We study some of the global properties of clouds using a science sample, consisting of 6664 well-resolved sources and for which the distance estimates are reliable. In particular, we compare the scaling relations retrieved from SEDIGISM to those of other surveys, and we explore the properties of clouds with and without high-mass star formation. Our results suggest that there is no single global property of a cloud that determines its ability to form massive stars, although we find combined trends of increasing mass, size, surface density, and velocity dispersion for the sub-sample of clouds with ongoing high-mass star formation. We then isolate the most extreme clouds in the SEDIGISM sample (i.e. clouds in the tails of the distributions) to look at their overall Galactic distribution, in search for hints of environmental effects. We find that, for most properties, the Galactic distribution of the most extreme clouds is only marginally different to that of the global cloud population. The Galactic distribution of the largest clouds, the turbulent clouds and the high-mass star-forming clouds are those that deviate most significantly from the global cloud population. We also find that the least dynamically active clouds (with low velocity dispersion or low virial parameter) are situated further afield, mostly in the least populated areas. However, we suspect that part of these trends may be affected by some observational biases (such as completeness and survey limitations), and thus require further follow up work in order to be confirmed.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Duarte-Cabral, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Colombo, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Urquhart, J. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ginsburg, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Russeil, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuller, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Anderson, L. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barnes, P. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beltran, M. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beuther, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bontemps, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bronfman, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Csengeri, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dobbs, C. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eden, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giannetti, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kauffmann, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mattern, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Medina, S-N X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menten, K. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lee, M-YUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pettitt, A. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riener, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rigby, A. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Traficante, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Veena, V. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wienen, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wyrowski, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Agurto, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Azagra, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cesaroni, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Finger, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonzalez, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henning, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hernandez, A. K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kainulainen, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leurini, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mac-Auliffe, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mazumdar, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Molinari, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Motte, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Muller, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nguyen-Luong, Q.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parra, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perez-Beaupuits, J-PUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montenegro-Montes, F. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moore, T. J. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ragan, S. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Monge, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanna, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schilke, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schisano, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suri, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Testi, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Torstensson, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Venegas, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zavagno, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606814
DOI: 10.1093/mnras/staa2480
Journal or Publication Title: Mon. Not. Roy. Astron. Soc.
Volume: 500
Number: 3
Page Range: S. 3027 - 3050
Date: 2021
Publisher: OXFORD UNIV PRESS
Place of Publication: OXFORD
ISSN: 1365-2966
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RECONSTRUCTING CO MAPS; INFRARED DARK CLOUDS; MASS-SIZE RELATION; H II REGIONS; STAR-FORMATION; GALACTIC DISTRIBUTION; MILKY-WAY; SPIRAL ARMS; DISTANCE AMBIGUITIES; INTERSTELLAR-MEDIUMMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60681

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