The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey

Details The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey

2006-08-04

arxiv.org/abs/astro-ph/0608108v1

Astronomy and Astrophysics

Astrophysics

Accepted by Astronomy and Astrophysics. For better quality images please download the journal pdf file

Scientific paper

10.1051/0004-6361:20054778

The Isaac Newton Telescope Photometric H-alpha Survey (IPHAS) is currently mapping the Northern Galactic plane reaching to r'=20 mag with typically 1" resolution. Hundreds of Planetary Nebulae (PNe), both point-like and resolved, are expected to be discovered. We report on the discovery of the first new PN from this survey: it is an unusual object located at a large galactocentric distance and has a very low oxygen abundance. The nebula shows an intricate morphology: there is an inner ring surrounding the central star, bright inner lobes with an enhanced waist, and very faint lobular extensions reaching up to more than 100". We classify it as a quadrupolar PN, a rather unusual class of planetary showing two pairs of misaligned lobes. From long-slit spectroscopy we derive Te[NII] =12800+-1000K, Ne = 390+-40 cm-3, and chemical abundances typical of Peimbert's Type I nebulae (He/H =0.13, N/O =1.8) with an oxygen abundance of 12 + log(O/H)=8.17+-0.15. A kinematic distance of 7.0 kpc is derived, implying an unusually large size of >4 pc for the nebula. The photometry of the central star indicates the presence of a relatively cool companion. This, and the evidence for a dense circumstellar disk and quadrupolar morphology, all of which are rare among PNe, support the hypothesis that this morphology is related to binary interaction.

Affiliated with

Also associated with

No associations

Rating

The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The "Principes de Asturias" nebula: a new quadrupolar planetary nebula from the IPHAS survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-49743