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相关论文: The WISE Catalog of Galactic HII Regions

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The WISE Catalog of Galactic HII Regions contains $\sim2000$ HII region candidates lacking ionized gas spectroscopic observations. All candidates have the characteristic HII region mid-infrared morphology of WISE $12\,\,\mu\,m$ emission…

Large-scale radio continuum surveys provide data to get insights into the physical properties of radio sources. HII regions are prominent radio sources produced by thermal emission of ionised gas around young massive stars. We identify and…

星系天体物理 · 物理学 2019-03-13 X. Y. Gao , P. Reich , L. G. Hou , W. Reich , J. L. Han

The Milky Way contains thousands of H II region candidates identified by their characteristic mid-infrared morphology, but lacking detections of ionized gas tracers such as radio continuum or radio recombination line emission. These targets…

星系天体物理 · 物理学 2021-03-17 William P. Armentrout , Loren D. Anderson , Trey V. Wenger , Dana S. Balser , Thomas M. Bania

The census of Galactic HII regions is vastly incomplete in the Southern sky. We use the Australia Telescope Compact Array (ATCA) to observe 4-10 GHz radio continuum and hydrogen radio recombination line (RRL) emission from candidate HII…

As part of our ongoing HII Region Discovery Survey (HRDS), we report the Green Bank Telescope detection of 148 new angularly-large Galactic HII regions in radio recombination line (RRL) emission. Our targets are located at a declination…

星系天体物理 · 物理学 2018-02-21 L. D. Anderson , W. P. Armentrout , Matteo Luisi , T. M. Bania , Dana S. Balser , Trey V. Wenger

The Southern HII Region Discovery Survey (SHRDS) is a 900 hour Australia Telescope Compact Array 4-10 GHz radio continuum and radio recombination line (RRL) survey of Galactic HII regions and infrared-identified HII region candidates in the…

We present new criteria for selecting HII regions from the Infrared Astronomical Satellite (IRAS) Point Source catalogue (PSC), based on an HII region catalogue derived manually from the all-sky Wide-field Infrared Survey Explorer (WISE).…

星系天体物理 · 物理学 2018-03-14 Qing-Zeng Yan , Ye Xu , A. J. Walsh , J. P. Macquart , G. C. MacLeod , Bo Zhang , P. J. Hancock , Xi Chen , Zheng-Hong Tang

HII regions are the ionized spheres surrounding high-mass stars. They are ideal targets for tracing Galactic structure because they are predominantly found in spiral arms and have high luminosities at infrared and radio wavelengths. In the…

星系天体物理 · 物理学 2015-09-09 L. D. Anderson , L. A. Hough , T. V. Wenger , T. M. Bania , Dana S. Balser

By collecting the information from 24 previously published lists and catalogs, we produce a comprehensive catalog (Master Catalog) of 1442 Galactic HII regions. For each object, we quote the original fluxes and diameters as well as the…

天体物理学 · 物理学 2009-11-07 R. Paladini , C. Burigana , R. D. Davies , D. Maino , M. Bersanelli , B. Cappellini , P. Platania , G. F. Smoot

We utilize new VLA Galactic plane catalogs at 5 and 1.4 GHz covering the first Galactic quadrant (350<l<42, |b|<0.4) in conjunction with the MSX6C Galactic plane catalog to construct a large sample of ultra-compact HII regions. A radio…

天体物理学 · 物理学 2009-11-10 Uriel Giveon , Robert H. Becker , David J. Helfand , Richard L. White

We have carried out the largest and most unbiased search for hypercompact (HC) HII regions. Our method combines four interferometric radio continuum surveys (THOR, CORNISH, MAGPIS and White2005) with far-infrared and sub-mm Galactic Plane…

星系天体物理 · 物理学 2018-11-28 A. Y. Yang , M. A. Thompson , W. W. Tian , S. Bihr , H. Beuther , L. Hindson

Studies of Galactic HII regions are of crucial importance for studying star formation and the evolution of the interstellar medium. Gaining an insight into their physical characteristics contributes to a more comprehensive understanding of…

We derive infrared and radio flux densities of all ~1000 known Galactic HII regions in the Galactic longitude range 17.5 < l < 65 degree. Our sample comes from the Wide-Field Infrared Survey Explorer (WISE) catalog of Galactic \hii regions…

星系天体物理 · 物理学 2017-09-06 Z. Makai , L. D. Anderson , J. L. Mascoop , B. Johnstone

We present data from mid-infrared Keck Telescope imaging of 18 radio-selected ultra-compact HII region candidates at diffraction-limited resolution. The goal of these observations is to determine the sizes, luminosities, and morphologies of…

天体物理学 · 物理学 2008-11-26 Uriel Giveon , Matthew J. Richter , Robert H. Becker , Richard L. White

As part of the GLOSTAR survey we have used the VLA in its B-configuration to observe the part of the Galactic plane between longitudes of 28d and 36d and latitudes from -1d to +1d at the C-band (4--8 GHz). To reduce the contamination of…

A catalogue of 239 ultra-compact HII regions (UCHIIs) found in the CORNISH survey at 5 GHz and 1.5" resolution in the region $10^{\circ} < l < 65^{\circ}, ~|b| < 1^{\circ}$ is presented. This is the largest complete and well-selected sample…

星系天体物理 · 物理学 2018-07-25 I. E. Kalcheva , M. G. Hoare , J. S. Urquhart , S. Kurtz , S. L. Lumsden , C. R. Purcell , A. A. Zijlstra

The Green Bank Telescope HII Region Discovery Survey has doubled the number of known HII regions in the Galactic zone 343deg.\leql\leq67deg. with |b|\leq1deg. We detected 603 discrete hydrogen radio recombination line (RRL) components at…

星系天体物理 · 物理学 2015-05-27 L. D. Anderson , T. M. Bania , Dana S. Balser , Robert T. Rood

We report radio recombination line (RRL) and continuum observations of a sample of 106 Galactic HII regions made with the NRAO 140 Foot radio telescope in Green Bank, WV. We believe this to be the most sensitive RRL survey ever made for a…

天体物理学 · 物理学 2009-11-11 Cintia Quireza , Robert T. Rood , Dana S. Balser , T. M. Bania

We present a new catalog of HII regions based on the integral field spectroscopy (IFS) data of the extended CALIFA and PISCO samples. The selection of HII regions was based on two assumptions: a clumpy structure with high contrast of…

We present results from a sample of 106 high-luminosity IRAS sources observed with the Very Large Array in the B and C configurations. 96 sources were observed in the X-band and 52 in the K-band, with 42 of them observed at both…

星系天体物理 · 物理学 2023-06-16 D. Quiroga-Gonzalez , M. A. Trinidad , E. de la Fuente , J. M. Masque , T. Rodriguez-Esnard
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