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Related papers: Magnetic fields in cometary globules - IV. LBN 437

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We present a study of the correlation between the direction of the symmetry axis of the circumstellar material around intermediate mass young stellar objects and that of the interstellar magnetic field. We use CCD polarimetric data on 100…

Astrophysics of Galaxies · Physics 2011-02-11 Claudia V. Rodrigues , Marilia J. Sartori , Jane Gregorio-Hetem , A. Mario Magalhaes

[Abridged] We carried out optical polarimetry of five dense cores, (IRAM 04191, L1521F, L328, L673-7, and L1014) which are found to harbour VeLLO. This study was conducted mainly to understand the role played by the magnetic field in the…

Solar and Stellar Astrophysics · Physics 2019-08-06 A. Soam , G. Maheswar , Chang Won Lee , Sami Dib , H C Bhatt , Motohide Tamura , Gwanjeong Kim

We present 450 {\mu}m polarimetric observations of the M17 molecular cloud obtained with the SHARP polarimeter at the Caltech Submillimeter Observatory. Across the observed region, the magnetic field orientation is consistent with previous…

We report the SOFIA/HAWC+ band D (154$\,\mu$m) and E (214$\,\mu$m) polarimetric observations of the filamentary structure OMC-3 that is part of the Orion molecular cloud. The polarization pattern is uniform for both bands and parallel to…

Astrophysics of Galaxies · Physics 2022-03-14 Niko Zielinski , Sebastian Wolf

The nature of the magnetic field structure throughout the Galactic Center (GC) has long been of interest. The recent Far-InfraREd Polarimetric Large-Area CMZ Exploration (FIREPLACE) Survey reveals preliminary connections between the…

We present CO ($J = 1-0$) multi-line observations toward the L914 dark cloud in the vicinity of the Cygnus X region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory (PMO). The CO observations reveal in the L914…

Astrophysics of Galaxies · Physics 2024-03-06 Li Sun , Xuepeng Chen , Min Fang , Shaobo Zhang , Yan Gong , Jiancheng Feng , Xuefu Li , Qing-Zeng Yan , Ji Yang

We describe a morphological imprint of magnetization found when considering the relative orientation of the magnetic field direction with respect to the density structures in simulated turbulent molecular clouds. This imprint was found…

Astrophysics of Galaxies · Physics 2013-08-27 J. D. Soler , P. Hennebelle , P. G. Martin , M. A. Miville-Deschênes , C. B. Netterfield , L. M. Fissel

Optical stellar polarimetry in the Perseus molecular cloud direction is known to show a fully mixed bi-modal distribution of position angles across the cloud (Goodman et al. 1990). We study the Gaia trigonometric distances to each of these…

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…

We examine the magnetic field in NGC 4214, a nearby irregular galaxy, using multi-wavelength radio continuum polarization data from the Very Large Array. We find that the global radio continuum spectrum shows signs that free-free absorption…

Astrophysics of Galaxies · Physics 2015-05-28 Amanda Kepley , Ellen Zweibel , Eric Wilcots , Kelsey Johnson , Timothy Robishaw

We present a multi-frequency polarimetric study for the quasar 1604+159. The source was observed at the $L$ band with the American Very Long Baseline Array (VLBA) and the $L$, $X$, and $U$ bands with the Very Large Array (VLA). These…

Astrophysics of Galaxies · Physics 2024-08-14 Xu-Zhi Hu , Xiaoyu Hong , Wei Zhao , Liang Chen , Wei-Yang Wang , Linhui Wu

The rotating magnetic B stars have oblique dipolar magnetic fields and often anomalous helium and metallic compositions. These stars develop co-rotating torus-shaped clouds by channelling winds from their magnetic poles to an anchored…

Astrophysics · Physics 2009-11-06 Myron A. Smith , Detlef Groote

Using the 353-GHz polarization observations by the Planck satellite we characterize the magnetic field in the Orion-Eridanus superbubble, a nearby expanding structure that spans more than 1600 square degrees in the sky. We identify a region…

Astrophysics of Galaxies · Physics 2018-02-14 J. D. Soler , A. Bracco , A. Pon

Bright-rimmed clouds form on the edges of H II regions affected by the high energy radiation from a central ionizing source. The UV radiation from the ionizing source results in compression and ionization causing either cloud disruption or…

Astrophysics of Galaxies · Physics 2018-04-25 Archana Soam , G. Maheswar , Chang Won Lee , S. Neha , Kee-Tae Kim

Herbig Ae stars are young A-type stars in the pre-main sequence evolutionary phase with masses of ~1.5-3 M_o. They show rather intense surface activity (Dunkin et al. 1997) and infrared excess related to the presence of circumstellar disks.…

Astrophysics · Physics 2009-11-10 S. Hubrig , M. Schoeller , R. V. Yudin

We present 850 $\mu$m polarized continuum observations carried out with the POL-2 polarimeter mounted on the James Clerk Maxwell Telescope (JCMT) towards NGC 7023 located in the Cepheus Flare region. NGC 7023 is a reflection nebula powered…

Astrophysics of Galaxies · Physics 2025-03-27 Ekta Sharma , Kate Pattle , Di Li , Chang Won Lee , Maheswar Gopinathan , Tao-Chung Ching , Mehrnoosh Tahani , Shinyoung Kim

The magnetic field structure of a star-forming Bok globule BHR 71 was determined based on near-infrared polarimetric observations of background stars. The magnetic field in BHR 71 was mapped from 25 stars. By using a simple 2D parabolic…

Using the imaging polarimeter for the Submillimeter Common User Bolometric Array at the James Clerk Maxwell Telescope, we have detected polarized thermal emission at 850 micron from dust toward three star-forming core systems in the Orion B…

Astrophysics · Physics 2009-11-07 B. C. Matthews , J. D. Fiege , G. H. Moriarty-Schieven

We have used polarimetric imaging to study the magneto-ionic medium of the Galaxy, obtaining 1420 MHz images with an angular resolution of 1' over more than 40 square-degrees of sky around the W3/W4/W5/HB3 HII region/SNR complex in the…

Astrophysics · Physics 2009-10-31 A. D. Gray , T. L. Landecker , P. E. Dewdney , A. R. Taylor , A. G. Willis , M. Normandeau

We present a CCD $VI$ photometric study of the globular cluster M14. Particular attention is given to the variable stars. This allowed new classifications and cluster membership considerations. New variables are reported; 3 RRc, 18 SR and 1…

Solar and Stellar Astrophysics · Physics 2022-01-19 M. A. Yepez , A. Arellano Ferro , D. Deras , I. Bustos Fierro , S. Muneer , K. -P. Schröder
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