Magnetic field structure inferred by near infrared polarization in the Carina Nebula and RCW57

B. H. Su, W. P. Chen, C. Eswaraiah, M. Tamura, R. Kandori, N. Kusakabe, J. Hashimoto, J. Kwon, Y. Nakajima, A. K. Pandey

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Carina Nebula (NGC3372) and RCW57A (NGC 3576) are among the brightest Galactic nebulae, with a wealth of massive stars and infrared excess stars, suggestive of recent and ongoing star formation. We present near-infrared JHKs polarization images to diagnose the magnetic field structure in these turbulent cloud complexes. Our observations covered only the central part of the Carina Nebula, around Eta Carina where a cavity has been created, for which only moderate polarization is measured, mainly by the general Galactic magnetic field. In contrast, RCW57A is associated with copious molecular clouds, and we were able to infer the hour-glass shaped magnetic field that governs the cloud morphology.

Original languageEnglish
Title of host publicationFirst International Conference on Chemical Evolution of Star Forming Region and Origin of Life, Astrochem 2012
Pages115-119
Number of pages5
DOIs
StatePublished - 2013
Event1st International Conference on Chemical Evolution of Star Forming Region and Origin of Life, Astrochem 2012 - Kolkata, India
Duration: 10 Jul 201213 Jul 2012

Publication series

NameAIP Conference Proceedings
Volume1543
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Conference on Chemical Evolution of Star Forming Region and Origin of Life, Astrochem 2012
Country/TerritoryIndia
CityKolkata
Period10/07/1213/07/12

Keywords

  • ISM and magnetic field
  • Star formation

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