Tracing the Galactic disk with planetary nebulae using Gaia DR3 - Distance catalog, velocities, populations, and radial metallicity gradients of Galactic planetary nebulae

Open Access

Table 7.

Radial oxygen gradients.

Sample	N	Slope	Intercept
		[dex kpc⁻¹]	log(O/H) + 12
		Average abundances

All	288	−0.0144 ± 0.00385	8.669 ± 0.0307
Excluding halo PNe	285	−0.0141 ± 0.00390	8.666 ±0.0314
OPPNe	186	−0.0121 ± 0.00465	8.660 ± 0.0376
YPPNe	55	−0.0220 ± 0.00758	8.743 ± 0.0601

		Selected abundances

All	288	−0.0163 ± 0.00385	8.672 ± 0.0312
Excluding halo PNe	285	−0.0159 ± 0.00392	8.668 ± 0.0319
OPPNe	186	−0.0132 ± 0.00464	8.659 ± 0.0373
YPPNe	55	−0.0278 ± 0.00789	8.759 ± 0.0629

Notes. Gradients are estimated using chemical abundances from Tables 4 (average abundances) and 5 (selected abundances), and for the listed PN samples, of numerosity N.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.