Long-slit spectra of the Red Rectangle at 3 microns

Details Long-slit spectra of the Red Rectangle at 3 microns Long-slit spectra of the Red Rectangle at 3 microns

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.4904s&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #49.04; Bulletin of the American Astronomical Society, Vol. 26, p.1392

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have observed the Red Rectangle with the Cryogenic Spectrometer (CRSP) at the 2.1 m telescope of Kitt Peak National Observatory. The Red Rectangle is a well-known source of the infrared emission features associated with polycyclic aromatic hydrocarbons (PAHs). Our long-slit spectra cover the 3.2-3.6 microns regime, which includes the strong PAH band at 3.29 microns, a weaker component at 3.40 microns, and an emission plateau which continues out to 3.6 microns. Emission in the PAH bands extends several arcseconds to the north and south of the central source (HD 44179). The seeing during our observations was approximately 1.5 arcseconds, but we have deconvolved the point spread function from our spectral images at each wavelength using maximum entropy reconstruction, allowing us to examine the relative behavior of these emission components at finer spatial scales. With the new 256times 256 array installed on CRSP, each pixel covers 0.6 arcseconds of sky. Our reconstructions reveal that the strength of the small 3.4 microns emission feature increases with respect to the 3.3 microns feature as the distance from the central source increases. In particular, there appears to be a region of enhanced 3.4 microns emission roughly 3'' to the north and south of the central source. We are analyzing our results in terms of the competing models for the origin of the 3.4 microns emission feature, which could be a vibrational overtone of the 3.3 microns feature, or could result from the attachment of molecular sidegroups to the PAH molecule.

Affiliated with

Also associated with

No associations

Rating

Long-slit spectra of the Red Rectangle at 3 microns 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 Long-slit spectra of the Red Rectangle at 3 microns, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-slit spectra of the Red Rectangle at 3 microns will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1321011