Astron. J., 153, 126-126 (2017/March-0)
Near-infrared polarimetric study of the N159/N160 star-forming complex in the Large Magellanic Cloud.
KIM J., JEONG W.-S., PYO J., PAK S., PARK W.-K., KWON J. and TAMURA M.
Abstract (from CDS):
We present near-infrared polarimetric results for the N159/N160 star-forming complex in the Large Magellanic Cloud with SIRPOL, the polarimeter of the Infrared Survey Facility. We separated foreground sources using their visual extinction derived from near-infrared photometric data. The 45 young stellar candidates and 2 high-excitation blobs were matched with our sources, and 12 of them showed high polarization that did not originate from the interstellar dust. We made a polarimetric catalog of 252, 277, and 89 sources at the J, H, and Ks bands, respectively. Based on the ratios of the polarization degree between these bands, we verify that the origin of these polarized sources is the dichroic extinction from the interstellar dust aligned by the magnetic field and that the ratios follow a power-law dependence of Pλ ∼ λ–0.9. The linear polarization vectors projected onto the Hα image of the complex turned out to follow the local magnetic field structure. The vector map overlaid on dust and gas emissions shows the close correlation between the magnetic field structure and surrounding interstellar medium. We suggest that the derived magnetic field structure supports the sequential formation scenario of the complex.
© 2017. The American Astronomical Society. All rights reserved.
infrared: ISM - infrared: stars - ISM: individual objects: (N159, N160) - ISM: magnetic fields - ISM: structure - Magellanic Clouds - Magellanic Clouds
VizieR on-line data:
<Available at CDS (J/AJ/153/126): table1.dat table3.dat>
Tables 1+3: [KJP2017] JHHMMSS.ss+DDMMSS.ss N=47+418.
Status at CDS
All or part of tables of objects could be ingested in SIMBAD with priority 2.
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