scholarly journals Multiwavelength Carbon Recombination Line Observations with the Very Large Array toward an Ultracompact HiiRegion in W48: Physical Properties and Kinematics of Neutral Material

2005 ◽  
Vol 626 (1) ◽  
pp. 253-261 ◽  
Author(s):  
D. Anish Roshi ◽  
W. M. Goss ◽  
K. R. Anantharamaiah ◽  
S. Jeyakumar
Keyword(s):  
Physical Properties ◽  
Large Array ◽  
Recombination Line ◽  
Very Large Array ◽  
Neutral Material

Very Large Array H92α and H53α Radio Recombination Line Observations of M82

2004 ◽  
Vol 616 (2) ◽  
pp. 783-803 ◽  
Author(s):  
C. A. Rodriguez‐Rico ◽  
F. Viallefond ◽  
J.‐H. Zhao ◽  
W. M. Goss ◽  
K. R. Anantharamaiah
Keyword(s):  
Large Array ◽  
Recombination Line ◽  
Very Large Array ◽  
Radio Recombination Line

scholarly journals Radio Images of Planetary Nebulae

1989 ◽  
Vol 131 ◽  
pp. 17-28 ◽  
Author(s):  
Yervant Terzian
Keyword(s):  
Magnetic Field ◽  
Neutral Hydrogen ◽  
Planetary Nebulae ◽  
Aperture Synthesis ◽  
Large Array ◽  
Very Large Array ◽  
Upper Limit ◽  
Neutral Material ◽  
Continuum Radio ◽  
The Continuum

The continuum radio spectra of planetary nebulae are discussed, and the structure of these objects is examined from the observed aperture synthesis brightness distributions determined with the Very Large Array. The use of radio observations in determining distances to planetary nebulae is examined. The detection of atomic neutral hydrogen at λ21 cm associated with planetary nebulae, as well as the associated CO and OH components are discussed. An upper limit, of the nebular magnetic field associated with the neutral material, of 1mG is reported for NGC 6302.

scholarly journals Massive and dusty Hα emitters in protocluster revealed by ALMA and JVLA

2015 ◽  
Vol 11 (S319) ◽  
pp. 96-96
Author(s):  
Minju Lee ◽  
Keyword(s):  
Physical Properties ◽  
Large Array ◽  
Very Large Array

AbstractWe investigate the physical properties of Hα emitters (HAEs) associated to the protocluster 4C23.56 at z ~ 2.5 using continuum observations at submm (270 GHz) and radio (3 GHz) frequencies with Atacama Large Mm/submm Array (ALMA) and K. Jansky Very Large Array (JVLA). For more details see Lee et al. (in prep).

Multiwavelength analysis of OH Megamaser galaxies: The case of IRAS11506-3851

2020 ◽  
Vol 15 (S359) ◽  
pp. 347-349
Author(s):  
Carpes P. Hekatelyne ◽  
Thaisa Storchi-Bergmann
Keyword(s):  
Active Galactic Nuclei ◽  
Hubble Space Telescope ◽  
Galactic Nuclei ◽  
Large Array ◽  
Very Large Array ◽  
Star Forming ◽  
Star Forming Regions ◽  
Field Unit ◽  
Mixed Transition ◽  
Integral Field

AbstractWe present Multi-Object Spectrograph (GMOS) Integral Field Unit (IFU), Hubble Space Telescope (HST) and Very Large Array (VLA) observations of the inner kpc of the OH Megamaser galaxy IRAS 11506-3851. In this work we discuss the kinematics and excitation of the gas as well as its radio emission. The HST images reveal an isolated spiral galaxy and the combination with the GMOS-IFU flux distributions allowed us to identify a partial ring of star-forming regions surrounding the nucleus with a radius of ≍500 pc. The emission-line ratios and excitation map reveal that the region inside the ring present mixed/transition excitation between those of Starbursts and Active Galactic Nuclei (AGN), while regions along the ring are excited by Starbursts. We suggest that we are probing a buried or fading AGN that could be both exciting the gas and originating an outflow.

scholarly journals OH main line masers in the M 82 starburst

2007 ◽  
Vol 3 (S242) ◽  
pp. 427-431
Author(s):  
M. K. Argo ◽  
A. Pedlar ◽  
T. W. B. Muxlow ◽  
R. J. Beswick
Keyword(s):  
Central Region ◽  
Supernova Remnants ◽  
Main Line ◽  
Line Of Sight ◽  
Starburst Galaxy ◽  
Large Array ◽  
Satellite Line ◽  
Very Large Array

AbstractA study of the distribution of OH gas in the central region of the nearby active starburst galaxy M82 has confirmed two previously known bright masers and revealed several new main line masers. Three of these are seen only at 1665 MHz, one is detected only at 1667 MHz, while the rest are detected in both lines. Observations covering both the 1665 and 1667 MHz lines, conducted with both the Very Large Array (VLA) and the Multi-Element Radio Linked Interferometer Network (MERLIN), have been used to accurately measure the positions and velocities of these features. This has allowed a comparison with catalogued continuum features in the starburst such as HII regions and supernova remnants, as well as known water and satellite line OH masers. Most of the main line masers appear to be associated with known HII regions although the two detected only at 1665 MHz are seen along the same line of sight as known supernova remnants.

Bipolar outflow of gas in the spiral galaxy NGC 3079

1986 ◽  
Vol 64 (4) ◽  
pp. 531-535 ◽  
Author(s):  
Nebojsa Duric ◽  
E. R. Seaquist
Keyword(s):  
Spectral Index ◽  
Spiral Galaxy ◽  
Central Region ◽  
Qualitative Description ◽  
Radio Continuum ◽  
Large Array ◽  
Very Large Array ◽  
Bipolar Outflow ◽  
The Galaxy

Very large array, radio-continuum observations of the edge-on spiral galaxy NGC 3079 are presented. The observations reveal that the nucleus has windlike properties and that the central region of the galaxy exhibits an unusual figure-eight morphology that shows evidence of severe depolarization and a flattening spectral index away from the nucleus. A qualitative description of a model is presented to account for the observed radio properties. It is shown that a wind-driven shock propagating away from the nucleus and focused by the ambient disk gas can give rise to the observed morphology.

scholarly journals realfast: Real-time, Commensal Fast Transient Surveys with the Very Large Array

2018 ◽  
Vol 236 (1) ◽  
pp. 8 ◽  
Author(s):  
C. J. Law ◽  
G. C. Bower ◽  
S. Burke-Spolaor ◽  
B. J. Butler ◽  
P. Demorest ◽  
...  
Keyword(s):  
Real Time ◽  
Large Array ◽  
Very Large Array ◽  
Fast Transient

Observations of minor planets with the very large array

1984 ◽  
Vol 34 (1-4) ◽  
pp. 39-48
Author(s):  
P. K. Seidelmann ◽  
G. H. Kaplan ◽  
K. J. Johnston ◽  
C. M. Wade
Keyword(s):  
Minor Planets ◽  
Large Array ◽  
Very Large Array
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