Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.1502w&link_type=abstract
American Astronomical Society, 193rd AAS Meeting, #15.02; Bulletin of the American Astronomical Society, Vol. 30, p.1274
Astronomy and Astrophysics
Astronomy
Scientific paper
We present near-infrared spectroscopic imaging of the planetary nebulae (PNs) Hubble 12 and M1-92. Hubble 12 has been observed in the molecular hydrogen v=1--0 S(1) emission line (2.12 mu m), in the forbidden singly ionized iron line ([FeII] at 1.644 mu m), and in the unidentified infrared (UIR) emission feature at 3.29 mu m. M1-92 has been imaged in the molecular hydrogen v=1--0 S(1) emission line (2.12 mu m), in the atomic hydrogen Brackett gamma emission line (2.166 mu m), and in the water ice absorption feature (3.08 mu m). The observations were made at the Wyoming Infrared Observatory 2.3 m telescope and at the Mount Lemmon Observing Facility 1.5 m telescope with the University of Rochester 3(rd) Generation Infrared Camera. Our M1-92 water ice absorption images, when compared with our Brackett gamma and molecular hydrogen emission images, show the spatial relationship of the exciting source to the nebulosity. Although our nebular data do not have the high spatial resolution offered by Bujarrabal et al. (1998), our images reveal the location of the obscured exciting star. The [FeII] emission of Hubble 12 is in the form of limb-brightened bipolar lobes, and is similar to, but less extended than, the molecular hydrogen emission reported by Hora & Latter (1996). Although Hora & Latter (1996) determined (from spectral line ratios) that the molecular hydrogen emission in the central region is UV-excited fluorescence, their spectra do not address the excitation mechanism of the bipolar lobes. Such bright [FeII] emission as seen in our images is very suggestive of shocked gas.
Forrest William John
Pipher Judith L.
Welch C. A.
Woodward Charles E.
No associations
LandOfFree
Near-Infrared Spectroscopic Imaging of Planetary Nebulae 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 Near-Infrared Spectroscopic Imaging of Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-Infrared Spectroscopic Imaging of Planetary Nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-992936