2021ApJ...919...73K

Query : 2021ApJ...919...73K

2021ApJ...919...73K - Astrophys. J., 919, 73-73 (2021/October-1)

Anomalous Hα emission line profile detected at the center of DDO 53.

KADER J.A., VAN ZEE L., McQUINN K.B.W. and HUNTER L.C.

Abstract (from CDS):

We present the detection of a very broad (FWHM = 670 ± 17 km s–1), low-intensity Hα emission line component near the center of DDO 53, a star-forming dwarf irregular galaxy located in the M81 group. The broad component is found at the base of a bright and narrow (FWHM = 38 ± 2 km s–1) component. Using WIYN/Sparsepak optical spectroscopy of the region in addition to multiwavelength archival data, we evaluate the plausibility of several candidate sources, and find that stellar winds from embedded young stars are the most likely origin. However, this result is surprising for such a faint H II region.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Interstellar medium - Stellar wind bubbles - Dwarf irregular galaxies - Wolf-Rayet stars - Stellar feedback

Simbad objects: 16

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Number of rows : 16
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
3 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 588 3
6 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
7 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
8 [SHK90] 11 HII 08 34 07.41 +66 10 38.7   21.91       ~ 3 0
9 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
10 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
11 NGC 3353 AGN 10 45 22.390 +55 57 37.36 12.90 13.25 12.79     ~ 378 1
12 NGC 4861 H2G 12 59 02.340 +34 51 33.98   12.90 12.32     ~ 389 2
13 NGC 5471 EmG 14 04 28.627 +54 23 52.84           ~ 250 1
14 LEDA 2169899 EmG 14 32 45.978 +40 42 59.92           ~ 21 0
15 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
16 NAME Local Group GrG ~ ~           ~ 9325 0

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