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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. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file nebulae.dat 29 45 Positions of the nebulae (from Simbad) fluxes.dat 30 826 Line fluxes for the measured nebulae (table 2 & 3 in the paper) tables.tex 124 139 LaTeX version of the tables
See also: V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992) J/A+A/373/536 : New galactic bulge PNe (van de Steene+, 2001) J/A+AS/125/289 : Planetary nebulae radial velocities (Zijlstra+ 1997) J/ApJ/515/610 : New PN in southern Galactic Bulge (Beaulieu+, 1999) J/A+A/423/199 : Chemical abundances of planetary nebulae (Costa+, 2004) Byte-by-byte Description of file: nebulae.dat
Bytes Format Units Label Explanations
1- 6 A6 --- PN Planetary nebula name 10- 11 I2 h RAh Right ascension (J2000.0) 13- 14 I2 min RAm Right ascension (J2000.0) 16- 19 F4.1 s RAs Right ascension (J2000.0) 21 A1 --- DE- Declination sign (J2000.0) 22- 23 I2 deg DEd Declination (J2000.0) 25- 26 I2 arcmin DEm Declination (J2000.0) 28- 29 I2 arcsec DEs Declination (J2000.0)
Byte-by-byte Description of file: fluxes.dat
Bytes Format Units Label Explanations
1- 6 A6 --- PN Planetary nebula name 8- 15 A8 --- Line Line name 17- 20 I4 0.1nm Lambda Wavelength 21 A1 --- n_Lambda [+] + when two wavelengths 22- 23 I2 0.1nm Lambda2 ? Last two digits of the second wavelength 25- 30 F6.1 --- Flux Flux of PN at line "Line" (F(Hβ)=100)
Acknowledgements: Roberto Costa
(End) Patricia Bauer [CDS] 22-Oct-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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