2013A&A...551A..53G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST00:32:10

2013A&A...551A..53G - Astronomy and Astrophysics, volume 551A, 53-53 (2013/3-1)

Kn 26, a new quadrupolar planetary nebula.

GUERRERO M.A., MIRANDA L.F., RAMOS-LARIOS G. and VAZQUEZ R.

Abstract (from CDS):

Once classified as an emission line source, the planetary nebula (PN) nature of the source Kn26 has only recently been recognized in digital sky surveys. To investigate the spectral properties and spatio-kinematical structure of Kn26, we have obtained high spatial-resolution optical and near-IR narrow-band images, high-dispersion long-slit echelle spectra, and intermediate-resolution spectroscopic observations. The new data reveal an hourglass morphology typical of bipolar PNe. A detailed analysis of its morphology and kinematics discloses the presence of a second pair of bipolar lobes, making Kn26 a new member of the subclass of quadrupolar PNe. The time lapse between the ejection of the two pairs of bipolar lobes is much shorter than their dynamical ages, implying a rapid change in the preferential direction of the central engine. The chemical composition of Kn26 is particularly unusual among PNe, with a low N/O ratio (as for type II PNe) and a high helium abundance (as for type I PNe), although not atypical among symbiotic stars. Such an anomalous chemical composition may have resulted from the curtailment of the time in the asymptotic giant branch by the evolution of the progenitor star through a common envelope phase.

Abstract Copyright:

Journal keyword(s): infrared: ISM - planetary nebulae: general - planetary nebulae: individual: Kn 26 - stars: AGB and post-AGB

VizieR on-line data: <Available at CDS (J/A+A/551/A53): list.dat fits/*>

Simbad objects: 18

goto Full paper

goto View the reference in ADS

Number of rows : 18

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 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 983 0
2 HD 289002 * 06 45 13.3726265810 +02 08 14.688016523 10.06 10.62 10.44     B1 226 0
3 NGC 4361 PN 12 24 30.7509091298 -18 47 05.564628299   12.8 13.2     [WC] 384 1
4 PN MyCn 18 PN 13 39 35.0560904148 -67 22 51.758576199   13.30 12.54 13.19 12.61 ~ 265 1
5 NGC 6072 PN 16 12 58.3630225774 -36 13 47.401537466     12.10     ~ 162 0
6 NGC 6309 PN 17 14 04.3073336607 -12 54 37.891046946   11.6       O(He) 297 1
7 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
8 PN M 3-28 PN 18 32 41.288 -10 05 50.03   15.6       ~ 83 0
9 PN M 2-46 PN 18 46 34.61 -08 28 02.1           ~ 64 0
10 PN Hu 2-1 PN 18 49 47.56755 +20 50 39.4576     13.3     ~ 263 0
11 PN K 3-24 PN 19 12 05.88 +15 09 04.5           ~ 44 0
12 PN M 4-14 PN 19 21 00.718 +07 36 52.37           ~ 50 0
13 HD 331319 pA* 19 49 29.5621075420 +31 27 16.247184491 10.4 10.196 9.52     F3Ibe 87 0
14 PN M 1-75 PN 20 04 44.1 +31 27 28           ~ 90 1
15 NGC 6881 PN 20 10 52.45 +37 24 42.4           ~ 197 0
16 Lan 384 UV 21 23 09.3 +38 58 11   16.5       ~ 8 1
17 V* R Aqr Sy* 23 43 49.4629939776 -15 17 04.184232557   8.823 7.683 9.37   M6.5-8.5e 736 0
18 NAME Galactic Bulge reg ~ ~           ~ 3391 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2013A&A...551A..53G and select 'bookmark this link' or equivalent in the popup menu


2020.07.13-00:32:10

© Université de Strasbourg/CNRS

    • Contact