2002A&A...391..689M

Query : 2002A&A...391..689M

2002A&A...391..689M - Astronomy and Astrophysics, volume 391689-692 (2002/8-4)

The early interaction of the planetary nebula NGC 40 with the interstellar medium.

MARTIN J., XILOURIS K. and SOKER N.

Abstract (from CDS):

We report the detection of an Hα emission-line structure in the upstream side of the planetary nebula NGC 40, which is predicted by numerical simulations, and which is attributed to Rayleigh-Taylor instability. Such a Rayleigh-Taylor instability is expected to occur at early stages of the interaction process between the interstellar medium (ISM) and a fast moving planetary nebula, as is the case for NGC 40. We resolved the Rayleigh-Taylor instability ``tongues'', as well as the flatness of the nebula around the ``tongues'', which results from the deceleration by the ISM.

Abstract Copyright: ∼

Journal keyword(s): planetary nebulae: general - ISM: structure - planetary nebulae: individual: NGC 40 - instabilities

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 - 2026 		#notes
1 NGC 40 PN 00 13 01.0170097248 +72 31 19.033338720   11.63 11.46     [WC8] 632 2
2 SH 2-216 PN 04 43 21.2638228056 +46 42 05.835192876   12.50 12.87 13.04   DAO.6 175 2
3 PN G240.8-19.6 PN? 06 24 36.66 -33 04 56.4           ~ 10 0
4 BRAN 378 PN 12 00 16.3 -59 04 44           ~ 10 1
5 PN A66 35 PN 12 53 32.7857105088 -22 52 22.569625704   10.52 9.69     G8III-IV+DAO 207 1
6 IC 4593 PN 16 11 44.5479462840 +12 04 17.031388584   10.91 10.84     O7fp 462 0
7 PN G357.4-07.2 PN 18 09 16.388 -34 47 39.29           ~ 11 0

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