Modeling the Radial Brightness Profile of Minkowski 1-11

Details Modeling the Radial Brightness Profile of Minkowski 1-11 Modeling the Radial Brightness Profile of Minkowski 1-11

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19511010j&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #110.10; Bulletin of the American Astronomical Society, Vol. 31, p.1537

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Minkowski 1-11 (hereafter M1-11) is a poorly understood planetary nebulae, with a central star temperature of only 26,600K (Zhang and Kwok 1993). Spectral models which include stellar and nebular continuum (including dust emission) show a large infrared excess in the near-infrared range at 2-4 microns. We have obtained near-infrared images in order to understand the radial brightness profile of this nebula. When we plot the radial brightness curve in the J, H and K bands scaled by radius squared, our images show a ring of enhanced emission. Polarization images show that this light is unpolarized, so scattered light is not a likely mechanism. In order to explain the origin of this emission, we present a model using CLOUDY (a photoionization and spectral synthesis code) to simulate the radial brightness profile including both continuum emission and line emission. We compare the results with the observations.

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