1998A&AS..133..361H


Query : 1998A&AS..133..361H

1998A&AS..133..361H - Astron. Astrophys., Suppl. Ser., 133, 361-380 (1998/December-2)

Detection of new emission structures around planetary nebulae.

HUA C.T., DOPITA M.A. and MARTINIS J.

Abstract (from CDS):

Deep monochromatic observations are presented for 22 galactic planetary nebulae (PNe) performed through narrow-band interference filters, in the direct imaging mode with i) the New Zealand (MJUO) f/7.8 Mc-Lellan telescope, ii) the Observatoire de Haute Provence (OHP) f/6 120-cm telescope, and iii) and the Siding Spring Observatory (SSO) ATT 2.3 metre telescope. Some of them are observed for the first time. Conspicuous secondary structures are detected far around the conventional nebular pictures. Such features could be relics of early mass ejections during the post-AGB phase of the progenitors. Alternatively, they are more plausibly projections of external loops/bubbles of the ``bar-bell'' shape upon the waist (for face-on PNe). We suggest that such structures (cf. Sh 1-89, Hua, 1997A&AS..125..355H) are intrinsic to all PNe. Their apparently diverse morphologies would ``simply'' result from projections of a same PN intrinsic structure at different view angles onto the plane of sky and with respect to the major axis as well. In addition we report the detection of a new nebula in the field of NGC 3699 (50'' distant). Absolute fluxes are provided for three emission lines.

Abstract Copyright:

Journal keyword(s): planetary nebulae - ISM: structure

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NGC 246 PN 00 47 03.3420341616 -11 52 18.971126076 10.15 11.52 11.76 12.18   PG1159 472 0
2 PN Hf 48 PN 11 03 55.98 -60 36 04.6     15.00     ~ 40 0
3 NGC 3699 PN 11 27 57.8398404036 -59 57 28.454312991   10 13.00     ~ 93 1
4 WRAY 16-96 PN 11 35 10.9637597544 -60 17 01.028531004     16.00     ~ 36 0
5 PN Hf 69 PN 11 41 37.2934794382 -62 28 54.841988186           ~ 24 0
6 WR 47a WR* 12 45 51.2507989248 -64 09 38.050552296   17.25 15.30     WN8h 24 0
7 NGC 5189 PN 13 33 32.8780414224 -65 58 27.041428272   14.1 14.5   14.35 [WO1] 311 2
8 IC 4406 PN 14 22 26.1440976888 -44 09 02.185112988   11.5 10.90     ~ 278 0
9 NGC 5844 PN 15 10 40.60 -64 40 25.0     12.70     ~ 78 0
10 PN DS 2 PN 15 43 05.0418817392 -39 18 14.603892588   11.94 11.91     sdO 44 0
11 PN K 1-3 PN 16 23 19.0090687824 -31 44 58.628625180   18.6 20.00     ~ 51 0
12 NGC 6302 PN 17 13 44.51256 -37 06 11.3616           O-rich 785 1
13 PN SaWe 3 PN 18 26 04.3613247120 -18 12 31.073362092           ~ 19 0
14 PN Lo 17 PN 18 27 49.9158838848 -37 15 51.941333628           ~ 23 0
15 PN SaWe 4 PN 19 02 16.1 -21 26 51           ~ 13 0
16 PN A66 60 PN 19 19 17.7906718320 -12 14 36.128634684           ~ 40 0
17 PN K 2-7 PN 19 40 29.0909353872 -20 27 05.899656780           ~ 19 0
18 PN A66 65 PN 19 46 34.2091910232 -23 08 12.966083088   15.93 15.77 16.00 15.65 Opk 131 0
19 PN A66 66 PN 19 57 31.5028648488 -21 36 46.209523248   17.71 17.39     ~ 47 0
20 M 27 PN 19 59 36.3631850088 +22 43 16.312059552   13.749 14.089 14.247 14.405 DAO.6 585 0
21 PN A66 70 PN 20 31 33.2075500128 -07 05 18.034910556         16.847 D+G8IV/VeBa 82 0
22 IC 5148 PN 21 59 35.0865352632 -39 23 08.233040148     16.5     O? 67 1

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2023.06.01-07:52:52

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