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相关论文: Magnetized Interstellar Molecular Clouds. I. Compa…

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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…

The cluster environment has been shown to affect the molecular gas content of cluster members, yet a complete understanding of this often subtle effect has been hindered due to a lack of detections over the full parameter space of galaxy…

Magnetic fields significantly influence the structure of galaxies' interstellar media, but our understanding of magnetic field strengths and structures in external galaxies is severely limited. The Large Magellanic Cloud (LMC) offers a…

星系天体物理 · 物理学 2025-05-30 Hilay Shah , Mark Krumholz , Naomi McClure-Griffiths

Magnetic and energetic properties are presented for 17 dense cores within a few hundred pc of the Sun. Their plane-of-sky field strengths are estimated from the dispersion of polarization directions, following Davis, Chandrasekhar and Fermi…

星系天体物理 · 物理学 2021-08-18 Philip C. Myers , Shantanu Basu

The dynamical state of massive clumps is key to our understanding of the formation of massive stars. In this work, we study the kinematic properties of massive clumps using synthetic observations. We have previously compiled a very large…

星系天体物理 · 物理学 2021-12-22 Zu-Jia Lu , Veli-Matti Pelkonen , Mika Juvela , Paolo Padoan , Troels Haugbølle , Åke Nordlund

In this paper we investigate the level of star formation activity within nearby molecular clouds. We employ a uniform set of infrared extinction maps to provide accurate assessments of cloud mass and structure and compare these with…

星系天体物理 · 物理学 2015-05-19 Charles J. Lada , Marco Lombardi , João F. Alves

We investigate, through 2D MHD numerical simulations, the interaction of a uniform magnetic field oblique to a moving interstellar cloud. In particular we explore the transformation of cloud kinetic energy into magnetic energy as a result…

天体物理学 · 物理学 2016-08-30 Francesco Miniati , T. W. Jones , Dongsu Ryu

We present a statistical study of the relative orientation in the plane of the sky between interstellar magnetic fields and filaments hosting cold clumps. For the first time, we consider both the density of the environment and the density…

星系天体物理 · 物理学 2019-03-15 D. Alina , I. Ristorcelli , L. Montier , E. Abdikamalov , M. Juvela , K. Ferrière , J. -Ph. Bernard , E. R. Micelotta

The convective envelopes of cool main-sequence stars harbour magnetic fields with a complex global and local structure. These fields affect the near-surface convection and the outer stellar atmospheres in many ways and are responsible for…

太阳与恒星天体物理 · 物理学 2015-09-02 Benjamin Beeck , Manfred Schüssler , Robert H. Cameron , Ansgar Reiners

We expand our study on the dispersion of polarization angles in molecular clouds. We show how the effect of signal integration through the thickness of the cloud as well as across the area subtended by the telescope beam inherent to dust…

星系天体物理 · 物理学 2014-11-20 Martin Houde , John E. Vaillancourt , Roger H. Hildebrand , Shadi Chitsazzadeh , Larry Kirby

The central molecular zone (CMZ) hosts some of the most massive and dense molecular clouds and star clusters in the Galaxy, offering an important window into star formation under extreme conditions. Star formation in this extreme…

星系天体物理 · 物理学 2017-02-22 J. D. Henshaw

Strong surface magnetic fields are ubiquitously found in M-dwarfs with mean intensities on the order of few thousand Gauss-three orders of magnitude higher than the mean surface magnetic field of the Sun. These fields and their interaction…

太阳与恒星天体物理 · 物理学 2010-12-08 D. Shulyak , A. Reiners , S. Wende , O. Kochukhov , N. Piskunov , A. Seifahrt

Context. Spatially resolved observations of the ionized and molecular gas are critical for understanding the physical processes that govern the interstellar medium (ISM) in galaxies. Aims. To study the morpho-kinematic properties of the…

We consider the possibility that cosmic magnetic field, instead of being uniformly distributed, is strongly correlated with the large scale structure of the universe. Then, the observed rotational measure of extra-galactic radio sources…

天体物理学 · 物理学 2011-07-19 Dongsu Ryu , Hyesung Kang , Peter L. Biermann

Coagulation in the dense interstellar medium (ISM) is an important process that determines the size of the largest grains. We use submillimetre galaxies (SMGs) as laboratories of grain coagulation, since some of them host the densest ISM on…

星系天体物理 · 物理学 2023-10-09 Hiroyuki Hirashita , Chian-Chou Chen

We present a study of the relative orientation between the magnetic field projected onto the plane of sky ($B_{\perp}$) on scales down to 0.4 pc, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz,…

星系天体物理 · 物理学 2020-03-04 Juan D. Soler

Context: The importance of magnetic fields at the onset of star formation related to the early fragmentation and collapse processes is largely unexplored today. Aims: We want to understand the magnetic field properties at the earliest…

星系天体物理 · 物理学 2018-06-13 H. Beuther , J. Soler , W. Vlemmings , H. Linz , Th. Henning , R. Kuiper , R. Rao , R. Smith , T. Sakai , K. Johnston , A. Walsh , S. Feng

Magnetic fields are an important ingredient to cool star physics, and there is great interest in measuring fields and their geometry in order to understand stellar dynamos and their influence on star formation and stellar evolution. During…

太阳与恒星天体物理 · 物理学 2015-03-17 Ansgar Reiners

This study investigated the relation between the surface density of star formation rate (SFR) ($\Sigma_{\mathrm{SFR}}$), stellar mass ($\Sigma_{M_{\ast}}$), and molecular gas mass ($\Sigma_{M_\mathrm{mol}}$) on nearly 1 kpc scales averaged…

Current observations favour that the massive ultraviolet-bright clumps with a median stellar mass of $\sim 10^7~M_{\odot}$, ubiquitously observed in $z\sim 1-3$ galaxies, are star-forming regions formed in-situ in galaxies. It has been…

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