STRUCTURE AND EXTINCTION OF 30 DORADUS AND THE NEARBY SNR-N157B AS MEASURED BY A COMPARISON OF RADIO AND OPTICAL-IMAGES

Authors
DICKEL JR MILNE DK KENNICUTT RC CHU YH SCHOMMER RA
Citation
Jr. Dickel et al., STRUCTURE AND EXTINCTION OF 30 DORADUS AND THE NEARBY SNR-N157B AS MEASURED BY A COMPARISON OF RADIO AND OPTICAL-IMAGES, The Astronomical journal, 107(3), 1994, pp. 1067-1072
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astronomical journal → ACNP
ISSN journal
00046256
Volume
107
Issue
3
Year of publication
1994
Pages
1067 - 1072
Database
ISI
SICI code
0004-6256(1994)107:3<1067:SAEO3D>2.0.ZU;2-8
Abstract
A 13 cm radio continuum image of the 30 Doradus region has been made w ith 7.5'' resolution using the Australia Telescope. It has been compar ed with a calibrated optical CCD image obtained at Cerro Tololo. The t wo images are virtually identical, indicating little variation in exti nction across the nebula. The mean value of the extinction at H(alpha) is 1.1 mag. The detailed radio image confirms that N157B is a Crab-li ke (nonshell) SNR with an extent of about 90'' X 70''.