Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared

Details Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared

2010-08-24

arxiv.org/abs/1008.4178v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

22 pages, 19 figures. Accepted for publication in MNRAS. 52 pages in arXiv

Scientific paper

10.1111/j.1365-2966.2010.17372.x

NGC 7009 is a fascinating example of a high excitation, elliptical planetary nebula (PN) containing circum-nebular rings, and FLIERs and jets along the major axis. We present visual spectroscopy along multiple position angles through the nucleus, taken with the Observatorio Astronomico Nacional (Mexico); mid-infrared (MIR) spectroscopy and imaging acquired using the Infrared Space Observatory (ISO) and Spitzer Space Telescope (SST), and narrow band imaging obtained using the Hubble Space Telescope (HST). The data show that the mid-infrared (MIR) continuum is dominated by a broad ~ 100K continuum, and a strong excess attributable to crystalline silicate emission. The primary peaks in this excess are similar to those observed in Forsterite and clino- and ortho-enstatite. We use the ground-based spectroscopy, and ratioing of HST images to investigate the presence of shocks in the ansae and interior envelope. It is concluded that line ratios in the ansae may be partially consistent with shock excitation, although these features are primarily dominated by photo-ionisation. We also note evidence for shock excitation at the limits of the interior elliptical shell, and for multiple bow-shock structures centered upon the ansae.

Affiliated with

Also associated with

No associations

Rating

Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared 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 Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mapping and Spectroscopy of the Planetary Nebula NGC 7009 in the Visual and Infrared will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-524608