2018ApJ...862...25J

Query : 2018ApJ...862...25J

2018ApJ...862...25J - Astrophys. J., 862, 25-25 (2018/July-3)

Comparison of the extraplanar Hα and UV emissions in the halos of nearby edge-on spiral galaxies.

JO Y.-S., SEON K.-I., SHINN J.-H., YANG Y., LEE D. and MIN K.-W.

Abstract (from CDS):

We compare vertical profiles of the extraplanar Hα emission to those of the UV emission for 38 nearby edge-on late-type galaxies. It is found that detection of the "diffuse" extraplanar dust (eDust), traced by the vertically extended, scattered UV starlight, always coincides with the presence of the extraplanar Hα emission. A strong correlation between the scale heights of the extraplanar Hα and UV emissions is also found; the scale height at Hα is found to be ∼0.74 of the scale height at FUV. Our results may indicate the multiphase nature of the diffuse ionized gas and dust in the galactic halos. The existence of eDust in galaxies where the extraplanar Hα emission is detected suggests that a larger portion of the extraplanar Hα emission than that predicted in previous studies may be caused by Hα photons that originate from H II regions in the galactic plane and are subsequently scattered by the eDust. This possibility raise an advantage in studying the extraplanar diffuse ionized gas. We also find that the scale heights of the extraplanar emissions normalized to the galaxy size correlate well with the star formation rate surface density of the galaxies. The properties of eDust in our galaxies is on a continuation line of that found through previous observations of the extraplanar polycyclic aromatic hydrocarbons emission in more active galaxies known to have galactic winds.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): dust, extinction - H II regions - ISM: structure - line: formation - radiative transfer - scattering

VizieR on-line data: <Available at CDS (J/ApJ/862/25): table1.dat table2.dat>

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 493 EmG 01 22 08.985 +00 56 43.21   13.0   13.0 12.8 ~ 131 0
2 NGC 784 LSB 02 01 16.932 +28 50 14.13 12.97 12.50 12.07 11.83   ~ 212 0
3 NGC 803 AG? 02 03 44.701 +16 01 51.46   13.5       ~ 91 0
4 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
5 NGC 1311 Sy2 03 20 06.946 -52 11 07.76 13.89 13.35 12.93 12.75 13.1 ~ 136 0
6 IC 1959 GiG 03 33 12.576 -50 24 51.13 13.52 13.32 12.96 12.75 12.7 ~ 119 0
7 IC 2000 GiG 03 49 07.6548649395 -48 51 29.792967442   12.90   11.78 12.6 ~ 74 0
8 ESO 249-35 GiP 03 58 56.3 -45 51 33   16.32   15.88   ~ 39 0
9 IC 2233 LSB 08 13 58.909 +45 44 31.74 12.87 13.41 12.63 12.80   ~ 253 1
10 MCG-01-26-012 GiG 10 02 36.00 -06 00 49.0 15.70 15.16 14.74 14.55 14.3 ~ 82 0
11 NGC 3189 GiP 10 18 05.643 +21 49 54.98 12.60 12.12 11.15 11.14   ~ 422 2
12 NGC 3365 GiG 10 46 12.649 +01 48 47.95   13.0   13.0 12.9 ~ 107 0
13 NGC 3432 AG? 10 52 31.132 +36 37 07.60   11.81 11.67 11.29   ~ 321 1
14 NGC 3510 LSB 11 03 43.356 +28 53 13.58   13.6       ~ 199 0
15 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
16 NGC 4020 GiG 11 58 56.935 +30 24 49.05   13.2       ~ 115 0
17 NGC 4144 GiG 12 09 58.601 +46 27 25.85   12.17   11.50   ~ 260 0
18 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 582 1
19 NGC 4313 GiG 12 22 38.5152345672 +11 48 03.161125584   13.2       ~ 174 0
20 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
21 NGC 4455 EmG 12 28 44.1242000448 +22 49 13.538159508   15.5       ~ 222 0
22 NGC 4469 GiG 12 29 27.997 +08 45 00.63   12.6       ~ 180 0
23 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
24 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
25 NGC 4866 LIN 12 59 27.0952921176 +14 10 16.382228232   11.9       ~ 220 0
26 NGC 5023 EmG 13 12 11.8036148808 +44 02 17.328663600   13.2       ~ 265 0
27 Z 217-20 LSB 13 13 53.848 +42 12 30.89   14.45   13.49   ~ 73 1
28 NGC 5107 GiP 13 21 25.269 +38 32 10.96   13.7       ~ 94 0
29 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
30 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 149 0
31 NGC 5348 GiP 13 54 11.254 +05 13 37.91   14.5       ~ 104 0
32 NGC 5356 GiP 13 54 58.422 +05 20 00.98   14.1       ~ 112 0
33 NGC 5951 GiG 15 33 43.070 +15 00 26.26   13.8       ~ 121 0
34 IC 4951 EmG 20 09 31.77 -61 51 01.7 14.74 14.23 13.84 13.68 14.0 ~ 73 0
35 IC 5052 G 20 52 01.633 -69 11 35.93 12.83 12.20 11.66 11.40   ~ 169 0
36 NGC 7090 EmG 21 36 28.865 -54 33 26.35 12.35 11.60 11.05 10.82 11.2 ~ 183 0
37 NGC 7112 GiP 21 42 22.8445729008 +12 29 53.895361632   15.19       ~ 73 1
38 IC 5176 Sy2 22 14 55.928 -66 50 57.88   13.54   11.97 12.4 ~ 109 0
39 NGC 7412A AG? 22 57 09.00 -42 48 16.1   14.30   13.57 13.9 ~ 39 0
40 MCG-06-51-005 GiG 23 26 56.21 -37 20 48.9 14.90 14.69 14.35 14.19 14.2 ~ 74 0
41 MCG-05-56-001 G 23 43 45.549 -31 57 24.37 14.55 14.03 13.73 13.63   ~ 162 1

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