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References of Nebular Types (TYPE) | |
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The types of the PN according to Peimbert classification (P78) (3rd colomn of the table) are taken from QRPM07. In that paper was presented a re-analysis of the criteria used to characrerize the Peimbert classes, through a statistical study of a large sample of PNe previously classified into types I to IV. As a rule, the clarifications concern bulge PNe that was not classified by chemical abundance before. In our catalogue it is noted with "/". The first roman numerals corresponds to the usual Peimbert class and the second - to the type, received with statistical method in QRPM07. | |
Ref Code | Full Reference |
QRPM07 | Quireza C., Rocha-Pinto H.J., Maciel W.J. A&A,475, 217 (2007) |
P78 | Peimbert M. in Planetary Nebulae, Proceedings of the IAU Symposium No. 76, Ed. by Y. Terzian (Reidel, Dordrecht, 1978), p. 215. |
References of Nebular Distances (D, Rz, |z|) | |
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The Nebular Distances (4-6th colomns of the table) are presented by three parameters: D - heliocentric distance of the PN (in kpc), Rz - Galactocentric distance of the PN (in kpc), |z| - the height above the Galactic plane (in kpc). The Galactocentric distance of the Sun RSUN = 7.7 kpc. The distances to PN in both lists, M97 and Z95, are close so we used the combined list to remove the error due to the inhomogeity of the sample. If the distance is presented in both samples we have used the data from M97 as more reliable (see reasons in M97). | |
Ref Code | Full Reference |
M97 | Mal'kov Yu.F. ARep, 41, 760 (1997) |
Z95 | Zhang C.Y. ApJSS, 98, 659 (1995) |
References of Nebular Central Star Masses (Mcs) | |
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The PN central-star masses (7th colomn of the table), taken from different sources can differ greatly. We used the combined list of masses from M97 Х GST97 to remove the error due to the inhomogeneity of the sample of PN central-star masses, because the central-star masses for the nebulae present in both lists are close. The masses that present in both lists are from M97. The units is MSUN. | |
Ref Code | Full Reference |
M97 | Mal'kov Yu.F. ARep, 41, 760 (1997) |
GST97 | Górny S.K., Stasiñska G., Tylenda R. A&A, 318, 256 (1997) |