Issue |
EPJ Web Conf.
Volume 293, 2024
mm Universe 2023 - Observing the Universe at mm Wavelengths
|
|
---|---|---|
Article Number | 00026 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.1051/epjconf/202429300026 | |
Published online | 28 March 2024 |
https://doi.org/10.1051/epjconf/202429300026
Exploring the interstellar medium of NGC 891 at millimeter wavelengths using the NIKA2 camera
1 National Observatory of Athens, IAASARS, GR-15236, Athens, Greece
2 Faculty of Physics, University of Athens, GR-15784 Zografos, Athens, Greece
3 Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, France
4 School of Physics and Astronomy, Cardiff University, CF24 3AA, UK
5 Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France
6 Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38000 Grenoble, France
7 Max Planck Institute for Extraterrestrial Physics, 85748 Garching, Germany
8 Sterrenkundig Observatorium Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
9 Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
10 Université Grenoble Alpes, CNRS, Institut Néel, France
11 Institut de RadioAstronomie Millimétrique (IRAM), Grenoble, France
12 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
13 Department of Physics and Astronomy, UCL, Gower Street, London WC1E 6BT, UK
14 Dipartimento di Fisica, Sapienza Università di Roma, I-00185 Roma, Italy
15 Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
16 Institute for Research in Fundamental Sciences (IPM), Larak Garden, 19395-5531 Tehran, Iran
17 Centro de Astrobiología (CSIC-INTA), Torrejón de Ardoz, 28850 Madrid, Spain
18 IRAP, Université de Toulouse, CNRS, UPS, IRAP, BP 44346, 31028 Toulouse Cedex 4, France
19 High Energy Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
20 Université Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France
21 Instituto de Radioastronomía Milimétrica (IRAM), Granada, Spain
22 LERMA, Observatoire de Paris, PSL, CNRS, Sorbonne Univ., UPMC, 75014 Paris, France
23 School of Earth & Space and Department of Physics, Arizona State University, AZ 85287, USA
24 School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
25 INAF-Osservatorio Astronomico di Cagliari, 09047 Selargius, Italy
26 LPENS, ENS, PSL Research Univ., CNRS, Sorbonne Univ., Université de Paris, 75005 Paris, France
27 Department of Physics and Astronomy, University of Pennsylvania, PA 19104, USA
28 Institut d’Astrophysique de Paris, CNRS (UMR7095), 75014 Paris, France
29 University of Lyon, UCB Lyon 1, CNRS/IN2P3, IP2I, 69622 Villeurbanne, France
* e-mail: s.katsioli@noa.gr
Published online: 28 March 2024
In the framework of the IMEGIN Large Program, we used the NIKA2 camera on the IRAM 30-m telescope to observe the edge-on galaxy NGC 891 at 1.15 mm and 2 mm and at a FWHM of 11.1” and 17.6”, respectively. Multiwavelength data enriched with the new NIKA2 observations fitted by the HerBIE SED code (coupled with the THEMIS dust model) were used to constrain the physical properties of the ISM. Emission originating from the diffuse dust disk is detected at all wavelengths from mid-IR to mm. while mid-lR observations reveal warm dust emission from compact H II regions. Indications of mm excess emission have also been found in the outer parts of the galactic disk. Furthermore, our SED fitting analysis constrained the mass fraction of the small (< 15 Å) dust grains. We found that small grains constitute 9.5% of the total dust mass in the galactic plane, but this fraction increases up to ~ 20% at large distances (|z| > 3 kpc) from the galactic plane.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.