The mid-infrared structure of the bipolar nebulae AFGL 915, AFGL 618, and AFGL 2688

Details The mid-infrared structure of the bipolar nebulae AFGL 915, AFGL 618, and AFGL 2688 The mid-infrared structure of the bipolar nebulae AFGL 915, AFGL 618, and AFGL 2688

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..361h&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 361-364

Astronomy and Astrophysics

Astrophysics

2

Planetary Nebulae: Individual (Afgl 915, Afgl 618, Afgl 2688), Planetary Nebulae: General, Planetary Nebulae: Infrared

Scientific paper

We have obtained near diffraction-limited images of three bipolar PPN at UKIRT in October, 1993: AFGL 915 (the “Red Rectangle”), AFGL 618, and AFGL 2688 (the “Egg Nebula”). Images were taken at unidentified infrared (UIR) emission feature wavelengths and at several continuum wavelengths in the 10 and 20µm atmospheric windows. In all three PPN the emission is dominated by a central point source with fainter emission extending for several arcsec. In AFGL 2688, the mid-IR emission is extended in the same direction as the main optical lobes. In AFGL 915, the UIR feature emission is spatially separated from the central source. The “spikes” that have been observed at 2µm and give the nebula its rectangular appearance are also visible at 10µm.

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