1997A&AS..125..355H


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET16:32:09

1997A&AS..125..355H - Astron. Astrophys., Suppl. Ser., 125, 355-366 (1997/October-2)

Deep morphologies of type I planetary nebulae.

HUA C.T.

Abstract (from CDS):

Deep narrow band interference filters observations are presented for 7 type I galactic planetary nebulae (PNe). Except for the nearly circular planetary nebula A 39, the observations show overall dimensions appreciably larger than those quoted so far. The observed PN (NGC 6302 excepted) could have linear diameters larger than 1pc. Our new observations imply ionized masses often larger than 1 M, suggesting that much of the mass ejected by the PN precursor is contained in faint outer extensions. This might contribute to the solution of the ``mass deficit" in PNe. We have also provided calibrated fluxes for some specific emission lines. In spite of their apparent morphological differences, our observations suggest that these type I PNe possess the same intrinsic structure as that displayed by NGC 650-1, the Ring Nebula, and even Sh 1-89 with its elongated jet-like feature, but viewed under different angles.

Abstract Copyright:

Journal keyword(s): planetary nebulae

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 76 PN 01 42 19.6604707683 +51 34 31.553132974     17.48   17.69 DOZ 356 2
2 PN A66 39 PN 16 27 33.7200850209 +27 54 33.472758646   15.27 15.60     DAO.70 115 0
3 NGC 6302 PN 17 13 44.339 -37 06 10.95   7.1 10.10     ~ 750 1
4 NGC 6543 PN 17 58 33.4042519454 +66 37 58.748961810   11.09 11.28     [WC] 1112 1
5 M 57 PN 18 53 35.0969571234 +33 01 44.883146221   15.405 15.769 15.901 16.062 DA(O?) 785 2
6 SH 2-71 PN 19 02 00.2850418489 +02 09 10.974558023   14.69 14.00 13.66   A7V-F0V 123 0
7 SH 1-89 PN 21 14 07.628 +47 46 22.17           ~ 63 0

    Equat.    Gal    SGal    Ecl

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