NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-24 T03:27:57 PDT
Help | Comment | NED Home

For refcode 1998ApJS..117..361C:
Retrieve 885 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1998ApJS..117..361C PLANETARY NEBULAE IN THE NRAO VLA SKY SURVEY J. J. CONDON National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903;jcondon@nrao.edu D. L. KAPLAN National Radio Astronomy Observatory; and Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853;kaplan@spacenet.tn.corpell.edu Received 1998 February 12; accepted 1998 March 18 ABSTRACT The 1.4 GHz NRAO VLA Sky Survey (NVSS) images and source catalog were used to detect radio emission from the 885 planetary nebulae north of J2000 declination {delta} = -40^deg^ in the Strasbourg-ESO Catalogue of Galactic Planetary Nebulae. We identified 680 radio sources brighter than about S = 2.5 mJy beam^-1^ (equivalent to T ~ 0.8 K in the 45" FWHM NVSS beam) with planetary nebulae by coincidence with accurate optical positions measured from Digitized Sky Survey (DSS) images. Total extinction coefficients c at {lambda} = 4861 A were calculated for the 429 planetary nebulae with available H{beta} fluxes and low free-free optical depths at 1.4 GHz. The variation of c with Galactic latitude and longitude is consistent with the extinction being primarily interstellar and not intrinsic. Subject headings: catalogs - dust, extinction - planetary nebulae: general - radio continuum: ISM - surveys
Retrieve 885 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home