Structure and extinction of 30 Doradus and the nearby SNR N157B as measured by a comparison of radio and optical images

John R. Dickel, D. K. Milne, Robert C. Kennicutt, You-Hua Chu, Robert A. Schommer

Research output: Contribution to journalReview article

Abstract

A 13 cm radio continuum image of the 30 Doradus region has been made with 7.5″ resolution using the Australia Telescope. It has been compared with a calibrated optical CCD image obtained at Cerro Tololo. The two images are virtually identical, indicating little variation in extinction across the nebula. The mean value of the extinction at Hα is 1.1 mag. The detailed radio image confirms that N157B is a Crab-like (nonshell) SNR with an extent of about 90″ × 70″.

Original languageEnglish (US)
Pages (from-to)1067-1072
Number of pages6
JournalAstronomical Journal
Volume107
Issue number3
StatePublished - Mar 1 1994

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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