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We present sensitive 3.0 cm JVLA radio continuum observations of six regions of low-mass star formation that include twelve young brown dwarfs and four young brown dwarf candidates. We detect a total of 49 compact radio sources in the…

太阳与恒星天体物理 · 物理学 2017-04-19 L. F. Rodriguez , L. Zapata , A. Palau

We present a multi-wavelength study of embedded massive clusters in the nearby (3.9 Mpc) starburst galaxy NGC 4449 in an effort to uncover the earliest phases of massive cluster evolution. By combining high resolution imaging from the radio…

天体物理学 · 物理学 2009-11-13 Amy E. Reines , Kelsey E. Johnson , W. M. Goss

We have selected a small sample of post-AGB stars in transition towards the planetary nebula and present new Very Large Array multi-frequency high-angular resolution radio observations of them. The multi-frequency data are used to create…

天体物理学 · 物理学 2009-11-13 L. Cerrigone , G. Umana , C. Trigilio , P. Leto , C. Buemi , Joseph L. Hora

Observations of young stellar objects (YSOs) in centimeter bands can probe the continuum emission from growing dust grains, ionized winds, and magnetospheric activity, which are intimately connected to the evolution of protoplanetary disks…

We present new trigonometric parallaxes and proper motions of young stellar objects in the Taurus molecular cloud complex from observations collected with the Very Long Baseline Array as part of the Gould's Belt Distances Survey (GOBELINS).…

We present polarization-sensitive images from the Karl G. Jansky Very Large Array (VLA) at 5 GHz of 11 radio-quiet PG quasars. Based on the radio morphology, spectral index and polarization properties from the VLA study, coupled with the…

星系天体物理 · 物理学 2024-02-21 Silpa S. , P. Kharb , Luis C. Ho , C. M. Harrison

Aims: This is the first paper in a series dedicated to investigating the kinematic properties of nearby associations of young stellar objects. Here we study the Taurus-Auriga association, with the primary objective of deriving kinematic…

天体物理学 · 物理学 2009-11-11 Claude Bertout , Francoise Genova

We present a multiwavelength investigation of star formation activity towards the southern H II regions associated with IRAS 17160-3707, located at a distance of 6.2 kpc with a bolometric luminosity of 830000 Lsun.The ionised gas…

星系天体物理 · 物理学 2016-11-15 G. Nandakumar , V. S. Veena , S. Vig , A. Tej , S. K. Ghosh , D. K. Ojha

We have used the Very Large Array aperture synthesis telescope to conduct a radio continuum survey of polar-ring galaxies, at 20cm and 6cm. Forty objects were observed at 20cm with 5" resolution. Twenty (50%) of the program sources were…

天体物理学 · 物理学 2009-11-10 A. L. Cox , L. S. Sparke

We report first results on the large-scale distribution of the ROSAT All-Sky Survey (RASS) X-ray sources in a 5000 deg^2 field centered on Orion. Our final aim is to study the properties of different widespread populations in the Orion…

太阳与恒星天体物理 · 物理学 2011-10-18 K. Biazzo , J. M. Alcalá , M. F. Sterzik , E. Covino , A. Frasca , P. Guillout

We present the properties of a group of young stars associated with the well-studied T Tauri star system AS 353, located in the Aquila star-forming region. The association is identified using radial velocity measurements of sample objects…

天体物理学 · 物理学 2008-11-26 E. L. Rice , L. Prato , I. S. McLean

We present high-resolution observations made with the Very Large Array (VLA) in its A configuration at frequencies between 5 and 43 GHz of a sample of five massive young stellar objects (YSOs): LkHa101, NGC2024-IRS2, S106-IR, W75N and…

天体物理学 · 物理学 2009-11-13 A. G. Gibb , M. G. Hoare

We examine the behaviour of the infrared-radio correlation (IRRC) over the range $0<z<6$ using new, highly sensitive 3GHz observations with the Karl G. Jansky Very Large Array (VLA) and infrared data from the Herschel Space Observatory in…

We present radio observations of 18 MIPSGAL bubbles performed at 5 GHz (6 cm) with the Karl G. Jansky Very Large Array in configuration B and BnA. The observations were aimed at understanding what kind of information high-resolution and…

We present a high angular resolution millimeter-wave dust continuum imaging survey of circumstellar material associated with individual components of 23 multiple star systems in the Taurus-Auriga young cluster. Combined with previous…

太阳与恒星天体物理 · 物理学 2015-06-04 Robert J. Harris , Sean M. Andrews , David J. Wilner , Adam L. Kraus

We present wide-area radio continuum 5.5 and 8.8 GHz (5.5 and 3.4 cm) Australia Telescope Compact Array observations of the complex and rich massive star-forming region G305. The aim of this study is to perform an un-targeted survey of the…

星系天体物理 · 物理学 2012-01-19 L. Hindson , M. A. Thompson , J. S. Urquhart , A. Faimali , J. S. Clark , B. Davies

We present Very Large Array observations at 1.4 and 5 GHz of a sample of 16 quasi-stellar objects (QSOs) at z = 1.78 to 2.71. Half of the chosen quasars are bright at mm wavelengths (250 or 350 GHz) while the other half were not detected at…

天体物理学 · 物理学 2008-11-26 A. Petric , C. L. Carilli , F. Bertoldi , A. Beelen , P. Cox , A. Omont

We report 1.3 cm and 6 cm continuum observations toward the massive proto-stellar candidate G11.11-0.12P1 using the Karl G. Jansky Very Large Array (VLA). We detect a string of four unresolved radio continuum sources coincident with the…

The Very Large Array (VLA) has been used in C-configuration to map an area \~0.3 square degrees at 1.4 GHz with 5sigma sensitivities of 0.305, 0.325, 0.380 and 0.450 mJy/beam over four equal subareas. Radio properties are presented for 62…

天体物理学 · 物理学 2009-10-31 Frank J. Masci , J. J. Condon , T. A. Barlow , C. J. Lonsdale , D. L. Shupe , O. Pevunova , F. Fang , R. Cutri

We present radio observations of ultraluminous infrared galaxies (ULIRGs) using the Giant Metrewave Radio Telescope (GMRT) and combine them with archival multi-frequency observations to understand whether ULIRGs are the progenitors of the…

星系天体物理 · 物理学 2021-02-23 S. Nandi , M. Das , K. S. Dwarakanath