PNe in NRAO VLA Sky Survey (Condon+ 1998)

Details PNe in NRAO VLA Sky Survey (Condon+ 1998) PNe in NRAO VLA Sky Survey (Condon+ 1998)

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..21170361c&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/117/361. Originally published in: 1998ApJS..117..361C

Physics

1

Planetary Nebulae, Radio Lines

Scientific paper

The 1.4GHz NRAO VLA Sky Survey (NVSS) images and source catalog were used to detect radio emission from the 885 planetary nebulae north of J2000 declination δ=-40° in the Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Cat. ). We identified 680 radio sources brighter than about S=2.5mJy/beam (equivalent to T~0.8K 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 λ=4861Å were calculated for the 429 planetary nebulae with available Hβ fluxes and low free-free optical depths at 1.4GHz. The variation of c with Galactic latitude and longitude is consistent with the extinction being primarily interstellar and not intrinsic. (2 data files).

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