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相关论文: Interferometric Mapping of Magnetic Fields in Star…

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We report our observational results of 870 $\mu$m continuum emission and its linear polarization in the massive star formation site W51 e2/e8. Inferred from the linear polarization maps, the magnetic field in the plane of sky (B$_{\bot}$)…

太阳与恒星天体物理 · 物理学 2009-07-22 Ya-Wen Tang , Paul T. P. Ho , Patrick M. Koch , Josep M. Girart , Shih-Ping Lai , Ramprasad Rao

We present the first interferometric polarization maps of the NGC2024 FIR5 molecular core obtained with the BIMA array at approximately 2 arcsec resolution. We measure an average position angle of -60+-6 degrees in the main core of FIR5 and…

天体物理学 · 物理学 2009-11-07 Shih-Ping Lai , Richard M. Crutcher , Jose M. Girart , Ramprasad Rao

We present the first ALMA dust polarization observations towards the high-mass star-forming regions W51 e2, e8, and W51 North in Band 6 (230 GHz) with a resolution around 0.26" ($\sim5$mpc). Polarized emission in all three sources is…

星系天体物理 · 物理学 2018-03-21 Patrick M. Koch , Ya-Wen Tang , Paul T. P. Ho , Hsi-Wei Yen , Yu-Nung Su , Shigehisa Takakuwa

We present the first high-angular resolution (up to 0.7", ~5000 AU) polarization and thermal dust continuum images toward the massive star-forming region W51 North. The observations were carried out with the Submillimeter Array (SMA) in…

星系天体物理 · 物理学 2015-06-12 Ya-Wen Tang , Paul T. P. Ho , Patrick M. Koch , Stephane Guilloteau , Anne Dutrey

The HH 1-2 region in the L1641 molecular cloud was observed in the near-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…

星系天体物理 · 物理学 2014-11-20 Jungmi Kwon , Minho Choi , Soojong Pak , Ryo Kandori , Motohide Tamura , Tetsuya Nagata , Shuji Sato

Within four nearby (d < 160 pc) molecular clouds, we statistically evaluate the structure of the interstellar magnetic field, projected on the plane of the sky and integrated along the line of sight, as inferred from the polarized thermal…

We present 850 micron imaging polarimetry of the W51A massive star forming region performed with SCUBA on the JCMT. From the polarimetry we infer the column-averaged magnetic field direction, projected onto the plane of the sky. We find…

天体物理学 · 物理学 2009-11-07 A. Chrysostomou , D. K. Aitken , T. Jenness , C. J. Davis , J. H. Hough , R. Curran , M. Tamura

We present 230 GHz continuum polarization observations with the Atacama Large Milimeter/Submillimeter Array (ALMA) at a resolution of 0$\farcs1$ ($\sim 540$~au) in the high-mass star-forming regions W51 e2 and e8. These observations resolve…

We present the first published maps of magnetic fields in pre-stellar cores, to test theoretical ideas about the way in which the magnetic field geometry affects the star formation process. The observations are JCMT-SCUBA maps of 850 micron…

天体物理学 · 物理学 2009-10-31 D. Ward-Thompson , J. M. Kirk , R. M. Crutcher , J. S. Greaves , W. S. Holland , P. Andre

We present 0.4 arcsec-resolution imaging polarimetry at 8.7, 10.3, and 12.5 microns, obtained with CanariCam at the Gran Telescopio Canarias, of the central region of W51 IRS2. The polarization, as high as 14 percent, arises from silicate…

It has been proposed that the magnetic field, pervasive in the ISM, plays an important role in the process of massive star formation. To better understand its impact at the pre and protostellar stages, high-angular resolution observations…

(abridged) The polarized thermal radiation at far infrared and submillimeter wavelengths from dust grains in interstellar clouds with irregular magnetic fields is simulated. We show that the polarization properties of quiescent clouds and…

天体物理学 · 物理学 2009-11-10 D. S. Wiebe , W. D. Watson

The magnetic field is a key ingredient in the recipe of star formation. Over the past two decades, millimeter and submillimeter interferometers have made major strides in unveiling the role of the magnetic field in star formation at…

太阳与恒星天体物理 · 物理学 2019-03-11 Charles L. H. Hull , Qizhou Zhang

The configuration and evolution of the magnetic field in star-forming cores are investigated in order to directly compare simulations and observations. We prepare four different initial clouds having different magnetic field strengths and…

太阳与恒星天体物理 · 物理学 2015-06-11 Akimasa Kataoka , Masahiro N. Machida , Kohji Tomisaka

We present the first far infrared (FIR) dust emission polarization map covering the full extent Milky Way's Central molecular zone (CMZ). The data, obtained with the PILOT balloon-borne experiment, covers the Galactic Center region…

This paper presents the results of full polarization observations of the massive star-forming region W75N, conducted with 3 arcsec spatial resolutions at 345 GHz using the Submillimeter Array (SMA). The magnetic field structures in the…

星系天体物理 · 物理学 2023-07-13 Lingzhen Zeng , Qizhou Zhang , Felipe O. Alves , Tao-Chung Ching , Josep M. Girart , Junhao Liu

We present 1.3 and 3.3 mm polarization maps of Orion-KL obtained with the BIMA array at approximately 4 arcsec resolution. Thermal emission from magnetically aligned dust grains produces the polarization. Along the Orion ``ridge'' the…

天体物理学 · 物理学 2009-10-30 R. Rao , R. M. Crutcher , R. L. Plambeck , M. C. H. Wright

We present 850 micron polarimetry from the James Clerk Maxwell Telescope toward several dense cores within the dark cloud Barnard 1 in Perseus. Significant polarized emission is detected from across the mapped area and is not confined to…

天体物理学 · 物理学 2009-11-07 Brenda C. Matthews , Christine D. Wilson

We (Li et al. 2009; Paper-I) compared the magnetic field directions inferred from polarimetry data obtained from 100-pc scale inter-cloud media (ICM) and from sub-pc scale molecular cloud cores. The highly correlated result led us to…

星系天体物理 · 物理学 2019-08-10 Y. Zhang , Z. Guo , H. H. Wang , H-b Li

The first polarimetric images of the OMC-3 region of the Orion A filamentary molecular cloud are presented. Using the JCMT, we have detected polarized thermal emission at 850 microns from dust along a 6' length of the dense filament. The…

天体物理学 · 物理学 2009-10-31 Brenda C. Matthews , Christine D. Wilson
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