2013ApJ...771...62K


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.17CEST03:54:51

2013ApJ...771...62K - Astrophys. J., 771, 62 (2013/July-1)

Mapping dust through emission and absorption in nearby galaxies.

KRECKEL K., GROVES B., SCHINNERER E., JOHNSON B.D., ANIANO G., CALZETTI D., CROXALL K.V., DRAINE B.T., GORDON K.D., CROCKER A.F., DALE D.A., HUNT L.K., KENNICUTT R.C., MEIDT S.E., SMITH J.D.T. and TABATABAEI F.S.

Abstract (from CDS):

Dust has long been identified as a barrier to measuring inherent galaxy properties. However, the link between dust and attenuation is not straightforward and depends on both the amount of dust and its distribution. Herschel imaging of nearby galaxies undertaken as part of the KINGFISH project allows us to map the dust as seen in emission with unprecedented sensitivity and ∼1 kpc resolution. We present here new optical integral field unit spectroscopy for eight of these galaxies that provides complementary 100-200 pc scale maps of the dust attenuation through observation of the reddening in both the Balmer decrement and the stellar continuum. The stellar continuum reddening, which is systematically less than that observed in the Balmer decrement, shows no clear correlation with the dust, suggesting that the distribution of stellar reddening acts as a poor tracer of the overall dust content. The brightest H II regions are observed to be preferentially located in dusty regions, and we do find a correlation between the Balmer line reddening and the dust mass surface density for which we provide an empirical relation. Some of the high-inclination systems in our sample exhibit high extinction, but we also find evidence that unresolved variations in the dust distribution on scales smaller than 500 pc may contribute to the scatter in this relation. We caution against the use of integrated AV measures to infer global dust properties.

Abstract Copyright:

Journal keyword(s): dust, extinction - galaxies: ISM

Simbad objects: 19

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Number of rows : 19

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 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11310 1
2 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5292 1
3 M 74 G 01 36 41.772 +15 47 00.46 10.52 10.00 9.46 9.16   ~ 1470 1
4 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1559 2
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5935 1
6 HZ 4 WD* 03 55 21.9881493731 +09 47 18.134000893 13.917 14.592 14.506 14.58 14.642 DA3.4 179 0
7 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 645 2
8 NGC 2798 GiP 09 17 22.954 +41 59 58.96 13.03 13.04 12.32     ~ 300 3
9 NGC 2799 GiP 09 17 31.0042502187 +41 59 38.582226495   14.32 13.71     ~ 118 1
10 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5453 6
11 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 704 0
12 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1203 4
13 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1692 2
14 LAWD 52 WD* 13 38 50.4780798626 +70 17 07.641423392 11.807 12.54 12.60 13.01 12.979 DA2.4 200 0
15 NGC 5713 GiP 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 363 2
16 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 388 0
17 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2307 2
18 BD+25 4655 HS* 21 59 41.9751489837 +26 25 57.398356446 8.27 9.39 9.68     sdO6 104 0
19 NGC 7331 LIN 22 37 04.102 +34 24 57.31 10.65 10.35 9.48     ~ 1135 2

    Equat.    Gal    SGal    Ecl

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2021.05.17-03:54:51

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