========================================================================== J/ApJ/708/758 Polarimetry of HH1-2 region (Kwon+, 2010) The following files can be converted to FITS (extension .fit or fit.gz) table1.dat table2.dat ========================================================================== Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/ApJ/708/758 ==========================================================================
drwxr-xr-x 19 cats archive 328 Mar 26 2012 [Up] drwxr-xr-x 2 cats archive 329 Jan 13 2023 [TAR file] -rw-r--r-- 1 cats archive 479 Dec 19 2022 .message -r--r--r-- 1 cats archive 5851 Mar 18 2012 ReadMe -rw-r--r-- 1 cats archive 607 Mar 18 2012 +footg5.gif -rw-r--r-- 1 cats archive 2479 Mar 18 2012 +footg8.gif -r--r--r-- 1 cats archive 3490 Feb 10 2012 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 5320 Feb 10 2012 table2.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/ApJ/708/758 Polarimetry of HH1-2 region (Kwon+, 2010) ================================================================================ Magnetic field structure of the HH 1-2 region: near-infrared polarimetry of point-like sources. Kwon J., Choi M., Pak S., Kandori R., Tamura M., Nagata T., Sato S. <Astrophys. J., 708, 758-769 (2010)> =2010ApJ...708..758K ================================================================================ ADC_Keywords: Polarization ; Photometry, infrared ; YSOs ; Molecular clouds Keywords: infrared: stars - ISM: individual (HH 1-2) - ISM: structure - polarization - stars: formation Abstract: The HH 1-2 region in the L1641 molecular cloud was observed in the near-infrared (IR) J, H, and Ks bands, and imaging polarimetry was performed. Seventy-six point-like sources were detected in all three bands. The near-IR polarizations of these sources seem to be caused mostly by the dichroic extinction. Using a color-color diagram, reddened sources with little IR excess were selected to trace the magnetic field structure of the molecular cloud. The mean polarization position angle of these sources is about 111deg, which is interpreted as the projected direction of the magnetic field in the observed region of the cloud. The distribution of the polarization angle has a dispersion of about 11deg, which is smaller than what was measured in previous studies. This small dispersion gives a rough estimate of the strength of the magnetic field to be about 130uG and suggests that the global magnetic field in this region is quite regular and straight. In contrast, the outflows driven by young stellar objects in this region seem to have no preferred orientation. This discrepancy suggests that the magnetic field in the L1641 molecular cloud does not dictate the orientation of the protostars forming inside. Description: The observations toward the HH 1-2 region were carried out using the SIRPOL imaging polarimeter on the Infrared Survey Facility (IRSF) 1.4m telescope at the South African Astronomical Observatory. The observations were made on the night of 2008 January 9.