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The recent Far-Infrared Polarimetric Large-Area Central Molecular Zone Exploration (FIREPLACE) survey with SOFIA has mapped plane-of-the-sky magnetic field orientations within the Central Molecular Zone (CMZ) of the Milky Way. Applying the…

The Galactic center (GC) is a dense and chaotic region filled with unusual sources, such as intense star forming regions, dense star clusters, nonthermal radio filaments, and a massive black hole. The proximity of the GC region makes it an…

天体物理学 · 物理学 2016-06-22 Casey James Law

This paper reports the discovery of a helical molecular cloud in the central molecular zone (CMZ) of our Galaxy. This "pigtail" molecular cloud appears at (l, b, V_LSR) ~ (-0.7deg, +0.0deg, -70 to -30 km/s), with a spatial size of ~ (20…

星系天体物理 · 物理学 2015-06-05 Shinji Matsumura , Tomoharu Oka , Kunihiko Tanaka , Makoto Nagai , Kazuhisa Kamegai , Tetsuo Hasegawa

The Central Molecular Zone (CMZ; inner $\sim{}200~\rm{}pc$) of the Milky Way is a star formation (SF) environment with very extreme physical properties. Exploration of SF in this region is important because (i) this region allows us to test…

We report the detection of CO(1-0) and CO(2-1) emission from the central region of nearby 3CR radio galaxies (z$<$ 0.03). Out of 21 galaxies, 8 have been detected in, at least, one of the two CO transitions. The total molecular gas content…

天体物理学 · 物理学 2009-09-25 S. Leon , J. Lim , F. Combes , D. Van-Trung

Magnetic fields of molecular clouds in the Central Molecular Zone (CMZ) have been relatively underobserved at sub-parsec resolution. Here we report JCMT/POL2 observations of polarized dust emission in the CMZ, which reveal magnetic field…

This work is part of the NUGA survey of CO emission in nearby active galaxies. We present observations of NGC4569, a member of the Virgo Cluster. We analyse the molecular gas distribution and kinematics in the central region and we…

The spatial distribution of the SMC stellar component is investigated from 2MASS data. The morphology of the different age populations is presented. The center of the distribution is calculated and compared with previous estimations. The…

天体物理学 · 物理学 2009-11-13 I. Gonidakis , E. Livanou , E. Kontizas , U. Klein , M. Kontizas , M. Belcheva , P. Tsalmantza , A. Karampelas

We present new interferometric observations of the 12CO(1-0), 12CO(2-1) and HCN (1-0) molecular line emission in NGC 3227 obtained with the IRAM Plateau de Bure interferometer (PdBI). We achieved an unprecedented angular resolution in the…

天体物理学 · 物理学 2009-10-31 E. Schinnerer , A. Eckart , L. J. Tacconi

We present observations in CO(3-2) that, combined with previous observations in CO(2-1), constrain the physical properties of the filamentary molecular gas in the central $\sim$6.5 kpc of NGC 1275, the central giant elliptical galaxy of the…

星系天体物理 · 物理学 2017-11-29 Jeremy Lim , Dinh-V-Trung , Jan Vrtilek , Laurence P. David , William Forman

The distribution of gas in the central kiloparsec of a galaxy has a dynamically rapid evolution. Nonaxisymmetries in the gravitational potential of the galactic disk, such as a large scale stellar bar or spiral, can lead to significant…

宇宙学与河外天体物理 · 物理学 2015-06-16 T. P. R. van der Laan , E. Schinnerer , E. Emsellem , S. Meidt , G. Dumas , T. Boeker , L. Hunt , S. Haan , C. Mundell , H. Wozniak

within 24 lines with 80 characters) We present ^12CO (1-0) observations in the central 4.5 kpc (1 arcmin) of the Halpha/Radio lobe galaxy NGC 3079 with the Nobeyama Millimeter Array. The molecular gas shows four components: a main disk,…

天体物理学 · 物理学 2009-11-07 J. Koda , Y. Sofue , K. Kohno , H. Nakanishi , S. Onodera , S. K. Okumura , Judith A. Irwin

Using a simple relation between the radial expansion velocity of diffuse gas in the Central Molecular Zone (CMZ) of the Galaxy and its distance from Sgr A$^\ast$ we estimate the physical depths within the CMZ of Star $\iota$ (2MASS…

星系天体物理 · 物理学 2022-03-14 Takeshi Oka , T. R. Geballe

We present a first attempt to construct an analytic model for a clumped gas and dust disk and apply it to the Galactic Centre. The clumps are described as isothermal spheres partially ionized by the external UV radiation field. The disk…

天体物理学 · 物理学 2009-10-31 B. Vollmer , W. J. Duschl

Observations of the Galactic Center (GC) region in very-high-energy (VHE, >100 GeV) gamma rays, conducted with the High Energy Stereoscopic System (H.E.S.S.), led to the detection of an extended region of diffuse gamma-ray emission in 2006.…

高能天体物理现象 · 物理学 2016-07-15 Alexander Ziegler , Christopher van Eldik

A survey for the molecular clouds in the Galaxy with NANTEN mm telescope has discovered molecular loops in the Galactic center region. The loops show monotonic gradients of the line of sight velocity along the loops and the large velocity…

The mass flows and energy cycles within the inner regions of galaxies exert a powerful influence on the evolution of the galaxy population. The centre of the Milky Way is the only galactic nucleus for which it is possible to resolve the…

星系天体物理 · 物理学 2026-02-25 Steven N. Longmore , John Bally , Ashley T. Barnes , Cara Battersby , Laura Colzi , Adam Ginsburg , Jonathan D. Henshaw , Paul T. P. Ho , Izaskun Jiménez-Serra , J. M. Diederik Kruijssen , Elisabeth A. C. Mills , Maya A. Petkova , Mattia C. Sormani , Robin G. Tress , Daniel L. Walker , Jennifer Wallace , Emad Alkhuja , Lucia Armillotta , Nazar Budaiev , Rojita Buddhacharya , Alyssa Bulatek , Michael Burton , Natalie O. Butterfield , Laura A. Busch , Paola Caselli , Mélanie Chevance , Claire Cook , Samuel Crowe , Ana Karla Díaz-Rodríguez , Enrico DiTeodoro , Simon R. Dicker , Katarzyna M. Dutkowska , Adam Fairley , Christoph Federrath , Rubén Fedriani , Zi-Xuan Feng , Karl Fiteni , Gary Fuller , Pablo García , Javier Goicoechea , Philipp Girichidis , Simon C. O. Glover , Mark Gorski , Savannah R. Gramze , Qi-Lao Gu , H. Perry Hatchfield , Christian Henkel , Rebecca J. Houghton , Pei-Ying Hsieh , Yue Hu , Katharina Immer , Desmond Jeff , Janik Karoly , Jens Kauffmann , Ralf S. Klessen , Mark R. Krumholz , Alex Lazarian , Emily M. Levesque , Fu-Heng Liang , Dani Lipman , Xunchuan Liu , Xing Lu , Qiu-yi Luo , Alessandro Lupi , Laura McCafferty , S. Martín , Farideh Mazoochi , Mark R. Morris , Marie Nonhebel , Francisco Nogueras-Lara , Tomoharu Oka , Juergen Ott , Marco Padovani , Xing Pan , Jaime E. Pineda , Thushara G. S. Pillai , Marc W. Pound , Miguel Requena Torres , Denise Riquelme-Vásquez , Víctor M. Rivilla , Galaxy Salo , Álvaro Sánchez-Monge , Miriam G. Santa-Maria , Rainer Schoedel , Anika Schmiedeke , Matthias Schultheis , Howard A. Smith , Yoshiaki Sofue , Leonardo Testi , Grant R. Tremblay , Arianna Vasini , Gijs Vermariën , Alexey Vikhlinin , Serena Viti , Q. Daniel Wang , Fengwei Xu , Suinan Zhang , Qizhou Zhang

One of the biggest puzzles regarding the circumgalactic medium (CGM) is the structure of its cool ($T\sim10^4$ K) gas phase. While the kinematics of quasar absorption systems suggests the CGM is composed of a population of different clouds,…

VLA maps of ammonia emission were made for the Galactic Center region. The NH3(1,1) and NH3(2,2) transitions were observed in three 2' x 2' fields covering Sgr A* and the region 3' immediately south of it. In the central 3 parsecs…

天体物理学 · 物理学 2019-04-22 Alison L. Coil , Paul T. P. Ho

We present high-resolution (0.94" $\approx$ 55 pc) ALMA CO(2-1) and 13CO(2-1) observations of the highly inclined (i~87.5 deg) galaxy NGC 4565 covering out to galactocentric radius Rgal > $\pm$ 17 kpc. The combination of sensitivity and…