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Paper   IPM / Astronomy / 17742
School of Astronomy
  Title:   Exploring the interstellar medium of NGC 891 at millimeter wavelengths using the NIKA2 camera
1.  S. Katsioli
2.  R. Adam
3.  P. Ade
4.  H. Ajeddig
5.  P. Andre
6.  E. Artis
7.  H. Aussel
8.  M. Baes
9.  A. Beelen
10.  A. Benoit
11.  S. Berta
12.  L. Bing
13.  O. Bourrion
14.  M. Calvo
15.  A. Catalano
16.  C.J.R. Clark
17.  I. De Looze
18.  M. De Petris
19.  F. -X.Desert
20.  S. Doyle
21.  E.F.C. Driessen
22.  G. Ejlali
23.  M. Galametz
24.  F. Galliano
25.  A. Gomez
26.  J. Goupy
27.  C. Hanser
28.  A. Hughes
29.  F. Keruzore
30.  C. Kramer
31.  A.P. Jones
32.  B. Ladjelate
33.  G. Lagache
34.  S. Leclercq
35.  J.-F. Lestrade
36.  J.F. Macias-Perez
37.  S.C. Madden
38.  A. Maury
39.  P. Mauskopf
40.  F. Mayet
41.  A. Moyer-Anin
42.  M. Munoz-Echeverra
43.  A. Nersesian
44.  L. Pantoni
45.  D. Paradis
46.  L. Perotto
47.  G. Pisano
48.  N. Ponthieu
49.  V. Reveret
50.  A.J. Rigby
51.  A. Ritacco
52.  C. Romero
53.  H. Roussel
54.  F. Ruppin
55.  K. Schuster
56.  A. Sievers
57.  M.W.L. Smith
58.  J. Tedros
59.  F. Tabatabaei
60.  C. Tucker
61.  E.M. Xilouris
62.  N. Ysard
63.  R. Zylka
  Status:   In Proceedings
  Proceeding: EDP Sciences, 2024
  Year:  2024
  Pages:   6
  Supported by:  IPM
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) 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.

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