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相关论文: A high-frequency radio continuum study of massive …

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We present sensitive ($\sim$9 $\mu$Jy), sub-arcsecond resolution radio continuum observations at 9.0 GHz (3.3 cm) and 14.0 GHz (2.1 cm) obtained with the Karl G. Jansky Very Large Array (VLA) toward the nearby Coronet Cluster in Corona…

We present new sub-arcsecond-resolution Karl G. Jansky Very Large Array (VLA) imaging at 10 GHz of 155 ultra-luminous ($L_{\rm bol}\sim10^{11.7-14.2} L_\odot$) and heavily obscured quasars with redshifts $z \sim0.4-3$. The sample was…

We present deep radio continuum observations of the star-forming core of the Serpens South Infrared Dark Cloud with the Karl G. Jansky Very Large Array (VLA). Observations were conducted in two bands centered at 7.25 GHz (4.14 cm) and 4.75…

太阳与恒星天体物理 · 物理学 2016-02-17 Nicholas Kern , Jared Keown , John Tobin , Adrian Mead , Robert Gutermuth

The Galactic center Arches stellar cluster, detected and studied until now only in the near-infrared, is comprised of at least one hundred massive (M>20 Msun) stars. Here we report the detection at centimeter wavelengths of radio continuum…

天体物理学 · 物理学 2009-11-06 Cornelia C. Lang , W. M. Goss , Luis F. Rodriguez

We present high resolution (arcsecond or better) observations made with the Karl G. Jansky Very Large Array of 123 radio-loud quasars with redshifts in the range $2.5 \leq z \leq 5.28$ that form a complete flux limited sample ($\geq 70$ mJy…

星系天体物理 · 物理学 2014-06-19 Doug B. Gobeille , John F. C. Wardle , C. C. Cheung

We employed the Very Large Array (VLA) of the National Radio Astronomy Observatory in C configuration to map 39 ultraluminous IRAS galaxies at 6~cm and 20~cm, at resolutions of ~ 4" and 15", respectively, and 24 sources at 6~cm with in the…

天体物理学 · 物理学 2008-11-26 Thomas Crawford , Jon Marr , Bruce Partridge , Michael Strauss

We present high-angular-resolution radio observations of the Arches cluster in the Galactic centre, one of the most massive young clusters in the Milky Way. The data were acquired in two epochs and at 6 and 10 GHz with the Karl G. Jansky…

We present sensitive radio continuum images at high resolution of 37 radio galaxies at z > 2. The observations were made with the Very Large Array (VLA) at 4.7 GHz and 8.2 GHz, with typical resolutions of 0.45'' and 0.25'', respectively.…

天体物理学 · 物理学 2009-10-28 C. L. Carilli , H. J. A. Rottgering , R. van Ojik , G. K. Miley , W. J. M. van Breugel

We present Very Large Array (VLA) observations at 1.4 GHz and 5 GHz of a sample of 12 Quasi-stellar Objects (QSOs) at z = 3.99 to 4.46. The sources were selected as the brightest sources at 250 GHz from the recent survey of Omont et al.…

天体物理学 · 物理学 2009-11-06 C. L. Carilli , F. Bertoldi , A. Omont , P. Cox , R. G. McMahon , K. G. Isaak

New high resolution 6 cm observations have been made on Cepheus A using MERLIN, and combined with new VLA observations at 3.7 cm. Angular resolution with the latter was 200 mas, and with MERLIN was 60 mas, except for isolated unresolved…

天体物理学 · 物理学 2015-06-24 V. A. Hughes , R. J. Cohen , S. Garrington

We analyze radio continuum and line observations from the archives of the Very Large Array, as well as X-ray observations from the \emph{Chandra} archive of the region of massive star formation W75N. Five radio continuum sources are…

太阳与恒星天体物理 · 物理学 2015-05-18 C. Carrasco-Gonzalez , L. F. Rodriguez , J. M. Torrelles , G. Anglada , O. Gonzalez-Martin

We present high-resolution radio observations of a sample of 65 radio sources at low Galactic latitudes. The sources were all observed at 5 GHz with the Very Large Array A-array. MERLIN observations at 5 GHz of the ultracompact HII region…

天体物理学 · 物理学 2009-11-10 D. J. Saikia , P. Thomasson , S. Roy , A. Pedlar , T. W. B. Muxlow

We present high resolution (< 20 mas) observations of the radio continuum emission at 1.4 GHz from three high-redshift quasars: J1053-0016 (z=4.29), 1235-0003 (z=4.69), and J0913+5919 (z=5.11), thereby doubling the number of z > 4…

天体物理学 · 物理学 2009-11-10 Emmanuel Momjian , Andreea O. Petric , Christopher L. Carilli

We present a high-resolution 5-GHz radio continuum map of the starburst galaxy NGC 2146 made with MERLIN and the VLA, in a search of radio supernovae and supernova remnants expected to be already produced by the most massive stars in the…

天体物理学 · 物理学 2007-05-23 A. Tarchi , N. Neininger , A. Greve , U. Klein , S. T. Garrington , T. W. B. Muxlow , A. Pedlar , B. E. Glendenning

Very Large Array observations of the Galactic Center at 7 mm have produced an image of the 30 arcseconds surrounding Sgr A* with a resolution of 82x42 milliarcseconds (mas). A comparison with IR images taken simultaneously with the Very…

星系天体物理 · 物理学 2015-06-22 F. Yusef-Zadeh , D. A. Roberts , H. Bushouse , M. Wardle , W. Cotton , M. Royster , G. van Moorsel

The Very Large Array Sky Survey (VLASS) is observing the entire sky north of $-40^{\circ}$ in the S-band ($2<\nu<4\,$GHz), with the highest angular resolution ($2''.5$) of any all-sky radio continuum survey to date. VLASS will cover its…

We present results from a high-sensitivity (60 $\mu$Jy), large-scale (2.26 square degree) survey obtained with the Karl G. Jansky Very Large Array as part of the Gould's Belt Survey program. We detected 374 and 354 sources at 4.5 and 7.5…

We report the results of the Jansky Very Large Array (JVLA) observation of five massive protostars at 6 and 22.2 GHz. The aim of the study was to compare their current fluxes and positions with previous observations to search for evidence…

太阳与恒星天体物理 · 物理学 2021-01-06 W. O. Obonyo , S. L. Lumsden , M. G. Hoare , S. E. Kurtz , S. J. D Purser

Young and magnetically active low-mass stars often exhibit non-thermal coronal radio emission due to the gyration of electrons in their magnetized chromospheres. This emission is easily detectable at centimeter wavelengths with the current…

太阳与恒星天体物理 · 物理学 2022-06-01 R. Launhardt , L. Loinard , S. A. Dzib , J. Forbrich , G. C. Bower , Th. K. Henning , A. J. Mioduszewski , S. Reffert

We have used the Very Large Array (VLA) to conduct a survey for radio continuum emission in the sample of 52 Seyfert nuclei selected from the optical spectroscopic galaxy catalog of Ho, Filippenko, and Sargent. This Seyfert sample is the…

天体物理学 · 物理学 2009-07-09 Luis C. Ho , James S. Ulvestad
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