2019ApJ...881...26V

Query : 2019ApJ...881...26V

2019ApJ...881...26V - Astrophys. J., 881, 26-26 (2019/August-2)

CHANG-ES. XVII. Hα imaging of nearby edge-on galaxies, new SFRs, and an extreme star formation region-data release 2.

VARGAS C.J., WALTERBOS R.A.M., RAND R.J., STIL J., KRAUSE M., LI J.-T., IRWIN J. and DETTMAR R.-J.

Abstract (from CDS):

We present new narrow-band Hα imaging for 24 nearby edge-on galaxies in the Continuum Halos in Nearby Galaxies-an EVLA Survey (CHANG-ES). We use the images in conjunction with the Wide-field Infrared Survey Explorer 22 µm imaging of the sample to estimate improved star formation rates (SFRs) using the updated recipe from Vargas et al. We explore correlations between the updated star formation properties and radio continuum scale heights, scale lengths, and diameters, measured in Krause et al. We find a newly discovered correlation between SFR and radio scale height that did not exist using mid-infrared (IR) only SFR calibrations. This implies that a mid-IR extinction correction should be applied to SFR calibrations when used in edge-on galaxies, due to attenuation by dust. The updated SFR values also show newly discovered correlations with radio scale length and radio diameter, implying that the previously measured relationship between radio scale height and radio diameter originates from star formation within the disk. We also identify a region of star formation located at extreme distance from the disk of NGC 4157, possibly ionized by a single O5.5 V star. This region is spatially coincident with an extended ultraviolet disk feature, as traced by the Galaxy Evolution Explorer near-ultraviolet imaging. We theorize that the star formation feature arose due to gravitational instability within gas from an accretion event. New Hα images from this work can be found at the CHANG-ES data release website, https://www.queensu.ca/changes.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: ISM - galaxies: spiral - galaxies: star formation

Simbad objects: 38

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Number of rows : 38
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 588 2
4 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
5 NGC 2613 Sy2 08 33 22.841 -22 58 25.21   11.29 10.42 9.75 10.5 ~ 180 0
6 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 475 1
7 NGC 2820 GiP 09 21 45.564 +64 15 28.87   13.1       ~ 172 0
8 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 951 3
9 NGC 3003 EmG 09 48 35.580 +33 25 17.83   12.3       ~ 225 0
10 NGC 3044 AG? 09 53 40.884 +01 34 46.74   12.7   12.7 12.3 ~ 239 1
11 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
12 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
13 NGC 3432 AG? 10 52 31.132 +36 37 07.60   11.81 11.67 11.29   ~ 321 1
14 NGC 3448 AG? 10 54 39.240 +54 18 18.82   12.2       ~ 238 1
15 M 108 AGN 11 11 30.967 +55 40 26.84   10.70       ~ 497 1
16 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
17 NGC 3735 Sy2 11 35 57.2748856320 +70 32 07.951921080   12.4       ~ 202 2
18 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 347 0
19 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 447 1
20 NGC 4096 GiG 12 06 01.161 +47 28 42.09   11.61   10.86   ~ 271 0
21 NGC 4157 GiC 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 373 2
22 M 98 LIN 12 13 48.2910686976 +14 54 01.953475200 11.25 10.95 10.14     ~ 499 2
23 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 324 2
24 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 582 1
25 NGC 4302 GiC 12 21 42.477 +14 35 51.94   13.4 11.61     ~ 348 0
26 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
27 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
28 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
29 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
30 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
31 NGC 4666 AGN 12 45 08.676 -00 27 42.88   11.7   11.5 10.7 ~ 421 1
32 NGC 4845 Sy2 12 58 01.24153 +01 34 32.0880   17.40 16.31     ~ 259 1
33 NGC 5084 Sy2 13 20 16.923 -21 49 39.28   11.15 12.21 9.84 10.5 ~ 192 1
34 NGC 5297 GiP 13 46 23.694 +43 52 19.34   12.3       ~ 181 0
35 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
36 NGC 5792 Sy2 14 58 22.709 -01 05 27.89   11.8   11.8 11.1 ~ 194 1
37 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
38 Z 23-26 AG? 16 14 24.804 -00 12 27.14   13.5   13.4 12.9 ~ 125 0

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