The SEDIGISM survey: First Data Release and overview of the Galactic structure

F Schuller; J. S Urquhart; T Csengeri; D Colombo; A Duarte-Cabral; M Mattern; A Ginsburg; Alexander R. Pettitt; F Wyrowski; Lyndsay W Anderson; F Azagra; P Barnes; M Beltran; H Beuther; S Billington; L Bronfman; R Cesaroni; C L Dobbs; D Eden; S-N X Medina; M-Y Lee; Karl M Menten; Taylor Moore; F. M Montenegro-Montes; S Ragan; A Rigby; M Riener; D Russeil; E Schisano; A Sanchez-Monge; A Traficante; A Zavagno; C Agurto; S Bontemps; R Finger; A Giannetti; Enid T Gonzalez-Orta; A. K Hernandez; T Henning; Jouni Kainulainen; J Kauffmann; S Leurini; S Lopez; F Mac-Auliffe; P Mazumdar; S Molinari; F Motte; E Muller; Q Nguyen-Luong; R Parra; J-P Perez-Beaupuits; P Schilke; N Schneider; S Suri; L Testi; K Torstensson; V. S Veena; P Venegas; K Wang; M Wienen

doi:10.1093/mnras/staa2369

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The SEDIGISM survey: First Data Release and overview of the Galactic structure

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The SEDIGISM survey: First Data Release and overview of the Galactic structure

F Schuller, J. S Urquhart, T Csengeri, D Colombo, A Duarte-Cabral, M Mattern, A Ginsburg, Alexander R. Pettitt, F Wyrowski, Lyndsay W Anderson, …

Monthly notices of the Royal Astronomical Society, Vol.500(3), pp.3064-3082

09/11/2020

DOI: https://doi.org/10.1093/mnras/staa2369

Handle:

https://hdl.handle.net/20.500.12741/rep:10437

Abstract

Annan kemi

Astronomi, astrofysik och kosmologi

Astronomy, Astrophysics and Cosmology

Galaxy: kinematics and dynamics

Geofysik

ISM: structure

Other Chemistry Topics

radio lines: ISM

surveys

Geophysics

The SEDIGISM (Structure, Excitation and Dynamics of the Inner Galactic InterstellarMedium) survey used the APEX telescope to map 84 deg(2) of the Galactic plane between l = -60 degrees and +31 degrees in several molecular transitions, including (CO)-C-13(2 - 1) and (CO)-O-18(2 - 1), thus probing the moderately dense (similar to 10(3) cm(-3)) component of the interstellar medium. With an angular resolution of 30 arcsec and a typical 1 sigma sensitivity of 0.8-1.0K at 0.25 km s(-1) velocity resolution, it gives access to a wide range of structures, from individual star-forming clumps to giant molecular clouds and complexes. The coverage includes a good fraction of the first and fourth Galactic quadrants, allowing us to constrain the large-scale distribution of cold molecular gas in the inner Galaxy. In this paper, we provide an updated overview of the full survey and the data reduction procedures used. We also assess the quality of these data and describe the data products that are being made publicly available as part of this First Data Release (DR1). We present integrated maps and position-velocity maps of the molecular gas and use these to investigate the correlation between the molecular gas and the large-scale structural features of the Milky Way such as the spiral arms, Galactic bar and Galactic Centre. We find that approximately 60 per cent of the molecular gas is associated with the spiral arms and these appear as strong intensity peaks in the derived Galactocentric distribution. We also find strong peaks in intensity at specific longitudes that correspond to the Galactic Centre and well-known star-forming complexes, revealing that the 13CO emission is concentrated in a small number of complexes rather than evenly distributed along spiral arms.

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Title: The SEDIGISM survey: First Data Release and overview of the Galactic structure
Creators: F Schuller (Author) - Leibniz Institute for Astrophysics Potsdam, Germany
J. S Urquhart (Author) - University Of Kent, United Kingdom
T Csengeri (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
D Colombo (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
A Duarte-Cabral (Author) - Cardiff University, United Kingdom
M Mattern (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
A Ginsburg (Author) - University of Florida, United States
Alexander R. Pettitt (Author)
F Wyrowski (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
Lyndsay W Anderson (Author) - West Virginia University, United States
F Azagra (Author) - European Southern Observatory Santiago, Chile
P Barnes (Author) - Space Science Institute, United States
M Beltran (Author) - Arcetri Astrophysical Observatory, Italy
H Beuther (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
S Billington (Author) - University Of Kent, United Kingdom
L Bronfman (Author) - University of Chile (UCH), Chile
R Cesaroni (Author) - Arcetri Astrophysical Observatory, Italy
C L Dobbs (Author) - University of Exeter, United Kingdom
D Eden (Author) - Liverpool John Moores University, United Kingdom
S-N X Medina (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
M-Y Lee (Author) - Korea Astronomy and Space Science Institute, South Korea
Karl M Menten (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
Taylor Moore (Author) - Liverpool John Moores University, United Kingdom
F. M Montenegro-Montes (Author) - European Southern Observatory Santiago, Chile
S Ragan (Author) - Cardiff University, United Kingdom
A Rigby (Author) - Cardiff University, United Kingdom
M Riener (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
D Russeil (Author) - Aix Marseille University, France
E Schisano (Author) - Istituto nazionale di astrofisica (INAF), Italy
A Sanchez-Monge (Author) - University of Cologne, Germany
A Traficante (Author) - Istituto nazionale di astrofisica (INAF), Italy
A Zavagno (Author) - Aix Marseille University, France
C Agurto (Author) - European Southern Observatory Santiago, Chile
S Bontemps (Author) - University of Bordeaux, France
R Finger (Author) - University of Chile (UCH), Chile
A Giannetti (Author) - Istituto nazionale di astrofisica (INAF), Italy
Enid T Gonzalez-Orta (Author) - European Southern Observatory Santiago, Chile
A. K Hernandez (Author) - University of Wisconsin Madison, United States
T Henning (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
Jouni Kainulainen (Author) - Chalmers University of Technology
J Kauffmann (Author) - Massachusetts Institute of Technology (MIT), USA
S Leurini (Author) - INAF Osservatorio Astronomico di Cagliari, Italy
S Lopez (Author) - University of Florida, United States
F Mac-Auliffe (Author) - European Southern Observatory Santiago, Chile
P Mazumdar (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
S Molinari - Istituto nazionale di astrofisica (INAF), Italy
F Motte (Author) - Université Grenoble Alpes, France
E Muller (Author) - Macquarie University, Australia
Q Nguyen-Luong (Author) - McMaster University, Canada
R Parra (Author) - European Southern Observatory Santiago, Chile
J-P Perez-Beaupuits (Author) - European Southern Observatory Santiago, Chile
P Schilke (Author) - University of Cologne, Germany
N Schneider (Author) - University of Cologne, Germany
S Suri (Author) - University of Cologne, Germany
L Testi (Author) - European Southern Observatory Santiago, Chile
K Torstensson (Author) - European Southern Observatory Santiago, Chile
V. S Veena (Author) - University of Cologne, Germany
P Venegas (Author) - European Southern Observatory Santiago, Chile
K Wang (Author) - Beijing University of Technology, China
M Wienen (Author) - Max Planck Society for the Advancement of Science (MPG), Germany
Academic Unit: Physics and Astronomy Department
Publication Details: 09/11/2020
Identifiers: 99257904215001671; https://hdl.handle.net/20.500.12741/rep:10437; https://doi.org/10.1093/mnras/staa2369
Language: English

The SEDIGISM survey: First Data Release and overview of the Galactic structure

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