Three PNe

[wvreeven]

Dear all,

I am very new to this forum, so I still need to get to know who's on it. I am sure many of you also are on the amastro Yahoo mailing list. For those who aren't, Brian Skiff posted this to that mailinglist last night:

Three recently-discovered northern planetary nebulae
feature in papers posted this evening on the arXiv
preprint server. Two are amateur discoveries.
Since all are up during the northern summer (now),
I'll mention them here in case there is interest
amongst large-telescope visual observers.
The two papers are:

http://arxiv.org/abs/1406.4309

The planetary nebula IPHASXJ211420.0+434136 (Ou5):
insights into common-envelope dynamical and
chemical evolution

Corradi et al



http://arxiv.org/abs/1406.4408

A spectroscopic and photometric study of the
planetary nebulae Kn 61 and Pa 5

Garcia-Diaz et al


The IPHAS object is a fairly small nebula, and is
identifiable as IRAS Z21124+4329. The precise
position is: 21 14 20.04 +43 41 36.1 (J2000)
from the UKIDSS catalogue. The integrated magnitude
of the nebula is perhaps mag 16, and the variable
central star down around mag 17.5 visually.

The second paper doesn't provide accurate coords
for Patchick 5, but does for Kronberger 61. They are
are at:

Patchick 5 19 19 30.53 +44 45 43.1 (2MASS)

Kronberger 61 19 21 38.94 +38 18 57.2 (SDSS DR7)

Patchick 5 clearly = IRAS 19179+4440, and the central
star is about V mag 14.8. The star for Kn 61 is
much fainter, around mag 18.3 per SDSS photometry.
Both nebulae are rather large and of quite low surface
brightness.


\Brian



Clear skies,

Wouter van Reeven

[Jimi Lowrey]

The IPHASXJ211420.0+434136 Cygnus PN is new to me,from looking at the DSS image of it it should be within reach of many of the Telescopes in this forum. It looks interesting.

IPHASXJ211420.0+434136 PN.jpg