2010A&A...514A..14K


Query : 2010A&A...514A..14K

2010A&A...514A..14K - Astronomy and Astrophysics, volume 514, A14-14 (2010/5-1)

Large-scale distributions of mid- and far-infrared emission from the center to the halo of M 82 revealed with AKARI.

KANEDA H., ISHIHARA D., SUZUKI T., IKEDA N., ONAKA T., YAMAGISHI M., OHYAMA Y., WADA T. and YASUDA A.

Abstract (from CDS):

The edge-on starburst galaxy M 82 exhibits complicated distributions of gaseous materials in its halo, which include ionized superwinds driven by nuclear starbursts, neutral materials entrained by the superwinds, and large-scale neutral streamers probably caused by a past tidal interaction with M 81. We investigate detailed distributions of dust grains and polycyclic aromatic hydrocarbons (PAHs) around M 82 to understand their interplay with the gaseous components. We performed mid- (MIR) and far-infrared (FIR) observations of M 82 with the infrared camera (IRC) and far-infrared surveyor (FIS) onboard AKARI. We obtained new MIR and FIR images of M 82, which reveal both faint extended emission in the halo and very bright emission in the center with signal dynamic ranges as broad as five orders of magnitude for the MIR and three for FIR, respectively. We detected MIR and FIR emission in the regions far away from the disk of the galaxy, reflecting the dust and PAHs in the halo of M 82. We find that the dust and PAHs are contained in both ionized and neutral gas components, implying that they have been expelled into the halo of M 82 by both starbursts and galaxy interaction. In particular, we obtain a tight correlation between the PAH and Hα emission, which provides evidence that the PAHs are well mixed in the ionized superwind gas and flowing out from the disk.

Abstract Copyright:

Journal keyword(s): galaxies: halos - galaxies: individual: M 82 - galaxies: starburst - ISM: jets and outflows - infrared: galaxies

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3123 2
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6276 1
3 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4168 3
4 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5582 6
5 NAME M 82 Group GrG 09 55 53.0 +69 40 50           ~ 25 0

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2022.05.20-00:47:43

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