/ftp/cats/A+A/380/300



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J/A+A/380/300       Abundances of PN towards Galactic bulge  (Escudero+, 2001)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	nebulae.dat fluxes.dat
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Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+A/380/300
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Beginning of ReadMe : J/A+A/380/300 Abundances of PN towards Galactic bulge (Escudero+, 2001) ================================================================================ Abundances of recently discovered planetary nebulae towards the Galactic bulge Escudero A.V., Costa R.D.D <Astron. Astrophys. 380, 300 (2001)> =2001A&A...380..300E ================================================================================ ADC_Keywords: Planetary nebulae ; Abundances, peculiar Keywords: ISM: planetary nebulae ; galactic bulge ; spectroscopy Abstract: In this work we report spectrophotometric observations of a planetary nebula sample towards the galactic bulge. A total of 45 PNe was observed and their physical parameters (electron density and temperature) were derived. Ionic abundances were calculated using a three-level atom model and abundances were derived through ionisation correction factors. Results show low abundance objects at high galactic latitudes, indicating a possible vertical gradient inside the bulge. A few objects with low N/O ratio were found, which could have originated from old, low mass progenitors.

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