2001A&A...377...73R


Query : 2001A&A...377...73R

2001A&A...377...73R - Astronomy and Astrophysics, volume 377, 73-83 (2001/10-1)

Far-infrared mapping of the starburst galaxy NGC 253 with ISOPHOT.

RADOVICH M., KAHANPAEAE J. and LEMKE D.

Abstract (from CDS):

A 180µm map and strip maps at 120 and 180µm were obtained for the edge-on starburst galaxy NGC 253 with ISOPHOT, the photometer on board the Infrared Space Observatory. We compare these observations with those obtained by IRAS at 60µm and 100µm and derive the far-infrared spectral energy distribution at different locations in the galaxy. There is evidence for the presence of cold dust (T≤20K) both in the nucleus and in the disk. Extended emission dominated by cold dust is detected up to ∼15' (∼10kpc) along the major and minor axis; its spatial distribution is similar to that seen in the IRAS and ROSAT PSPC images. The emission along the minor axis is probably related to large-scale outflows of gas (superwinds) which originate in the nuclear starburst and maybe to star formation in the halo. The radial dependence of the dust temperature along the major axis is found using a radiative transfer code: we show that the dust scale length in the disk is ∼40% larger than that of stars.

Abstract Copyright:

Journal keyword(s): infrared: galaxies - ISM: dust - galaxies: spiral - galaxies: ISM - galaxies: starburst - galaxies: NGC 253

CDS comments: in ref list McCarthy 1987AJ.....93..264M instead of 92.264

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3039 2
2 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 669 3
3 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5470 6
4 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2365 1

    Equat.    Gal    SGal    Ecl

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2021.07.29-01:27:52

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