Chemical behaviour of planetary nebulae and galactic abundance gradients J/A+A/280/581 J/A+A/280/581 Chemical behaviour of planetary nebulae and gal Chemical behaviour of planetary nebulae and galactic abundance gradients A Pasquali M Perinotto Astron. Astrophys. 280 581 1993 1993A&A...280..581P Abundances Interstellar medium Nebulae, planetary Galaxy: abundances ISM: abundances planetary nebulae: general *** No Description Available ***
Chemical abundances of the PNe not included in Table 1 of Perinotto (1991) Planetary Nebulae of type I Planetary Nebulae of type IV Name Name of PNe --- PK PK number of PNe --- l_He/H Limit flag on He/H --- He/H Helium abundances with respect to H --- u_He/H Uncertainty flag on He/H --- O/H Oxygen abundances with respect to H, 10-4 u_O/H Uncertainty flag on O/H --- l_N/O Limit flag on N/O --- C/O Carbon abundances with respect to Oxygen --- u_C/O Uncertainty flag on C/O --- l_N/O Limit flag on N/O --- N/O Nytrogen abundances with respect to Oxygen --- u_N/O Uncertainty flag on N/O --- Ne/O Neon abundances with respect to Oxygen --- u_Ne/O Uncertainty flag on Ne/O --- Sources References in literature. --- Z Z distances from the Galactic Plane calculated from Cahn et al. (1992) pc V(LSR) Radial velocities from Schneider et al. (1983) km/s Distances and velocities of PNe with known chemical abundances Name Name of PNe --- PK PK number of PNe --- Distance Distance calculated from Cahn et al. (1992) pc V(LSR) Radial velocities Schneider et al. (1983) km/s Francois Ochsenbein CDS 1993Jul26 J_A+A_280_581.xml