Issue |
A&A
Volume 690, October 2024
|
|
---|---|---|
Article Number | A169 | |
Number of page(s) | 15 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361/202450265 | |
Published online | 08 October 2024 |
Neutral atomic and molecular gas dynamics in the nearby spiral galaxies NGC 1512, NGC 4535, and NGC 7496
1
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
2
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
3
Department of Astronomy, The Ohio State University, 140 West 18th Ave, Columbus, OH 43210, USA
4
Center for Cosmology and Astroparticle Physics, 191 West Woodruff Avenue, Columbus, OH 43210, USA
5
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
6
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
7
Netherlands Institute for Radio Astronomy (ASTRON), Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands
8
Kapteyn Astronomical Institute, University of Groningen, PO Box 800 9700 AV Groningen, The Netherlands
9
Department of Astronomy, University of Cape Town, Private Bag X3, 7701 Rondebosch, South Africa
10
Observatorio Astronómico Nacional (IGN), C/Alfonso XII 3, Madrid E-28014, Spain
11
University of Alberta, Edmonton, Alberta T6G 2E1, Canada
12
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
13
Universität Heidelberg, Zentrum für Astronomie, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany
14
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße 1, D-85748 Garching, Germany
15
Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden St., 02138 Cambridge, MA, USA
16
Departamento de Fisica de la Tierra y Astrofisica, Facultad de CC Fisicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
17
Department of Physics, Tamkang University, No.151, Yingzhuan Road, Tamsui District, New Taipei City 251301, Taiwan
18
Sub-department of Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
Received:
5
April
2024
Accepted:
2
July
2024
Neutral atomic gas (H I) effectively traces galactic dynamics across mid to large galactocentric radii. However, its limitations in observing small-scale changes within the central few kiloparsecs, coupled with the often observed H I deficit in galactic centers, necessitates the use of molecular gas emission as a preferred tracer in these regions. Understanding the dynamics of both neutral atomic and molecular gas is crucial for a more complete understanding of how galaxies evolve, funnel gas from the outer disk into their central parts, and eventually form stars. In this work we aim to quantify the dynamics of both, the neutral atomic and molecular gas, in the nearby spiral galaxies NGC 1512, NGC 4535, and NGC 7496 using new MeerKAT H I observations together with ALMA CO (2-1) observations from the PHANGS collaboration. We use the analysis tool 3DBarolo to fit tilted ring models to the H I and CO observations. A combined approach of using the H I to constrain the true disk orientation parameters before applying these to the CO datasets is tested. This paper sets expectations for the results of the upcoming high-resolution H I coverage of many galaxies in the PHANGS-ALMA sample using MeerKAT or VLA, to establish a robust methodology for characterizing galaxy orientations and deriving dynamics from combing new H I with existing CO data.
Key words: galaxies: ISM / galaxies: kinematics and dynamics / galaxies: spiral
© The Authors 2024
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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