The visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1

Details The visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1 The visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.391...52r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 391, Issue 1, pp. 52-62.

Astronomy and Astrophysics

Astronomy

7

Ism: Jets And Outflows, Ism: Lines And Bands, Planetary Nebulae: Individual: Ngc 650-1, Infrared: Ism

Scientific paper

The bipolar planetary nebula NGC 650-1 has been imaged in Hα, Hβ, [NII] λ6583Å and [SII] λλ6717+6731Å. These results are used to map the variation of extinction over the interior regions of the shell, where we find evidence for a gradual increase in AV between the SW and NE limits of the central emission bar. It is argued that this is likely to arise from dust associated with the nebular envelope itself. We have also produced a map of electron densities over this region, and find evidence for marked variations in ne over a scale of ~5arcsec, a variation which is probably related to the clumpy emission structure observed in low-excitation images. We finally present contour mapping of mid-infrared Spitzer images of the source at 3.6,4.5,5.8and 8μm. These show that the central bar has a more or less uniform emission structure, although with evidence for condensations which are similar to, and in most cases coincidental with, comparable low-excitation structures noted in [NII]. There is also evidence for an increase in 8/4.5μm and 5.8/4.5μm emission ratios with distance from the nucleus, and for an extension of 8 and 5.8μm emission beyond the ionized regime; a trend which is attributed to strong polycyclic aromatic hydrocarbon band emission within the nebular photodissociative regime.

Affiliated with

Also associated with

No associations

Rating

The visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1 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 visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The visual and mid-infrared properties of the bipolar planetary nebula NGC 650-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-751008