New galactic bulge PNe (van de Steene+, 2001)

Details New galactic bulge PNe (van de Steene+, 2001) New galactic bulge PNe (van de Steene+, 2001)

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..33730536v&link_type=abstract

VizieR On-line Data Catalog: J/A+A/373/536. Originally published in: 2001A&A...373..536V

Computer Science

Planetary Nebulae, Radio Lines, Morphology

Scientific paper

We observed 64 newly identified galactic bulge planetary nebulae in the radio continuum at 3 and 6 cm with the Australia Telescope Compact Array. We present their radio images, positions, flux densities, and angular sizes. The survey appears to have detected a larger ratio of more extended planetary nebulae with low surface brightness than in previous surveys. We calculated their distances according to Van de Steene & Zijlstra (1995A&A...293..541V). We find that most of the new sample is located on the near side around the galactic center and closer in than the previously known bulge PNe. Based on Hα images and spectroscopic data, we calculated the total Hα flux. We compare this flux value with the radio flux density and derive the extinction. We confirm that the distribution of the extinction values around the galactic center rises toward the center, as expected. (2 data files).

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