Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions

Details Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.0602k&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #06.02; Bulletin of the American Astronomical Society, Vol. 29, p.1216

Astronomy and Astrophysics

Astronomy

Scientific paper

As part of a long-term investigation into the distribution of dust within evolved galactic HII regions, calibrated H-alpha images have been obtained of the objects M20 (= S30, the Trifid Nebula), S106, and NGC 7538 (= S158). Observations were made with an Axiom/Apogee 2048x2048 CCD camera attached to the 0.9-m telescope operated by the Southeastern Association for Research in Astronomy (SARA) at Kitt Peak National Observatory. Each object was observed with a narrow-band (0.3 nm) H-alpha filter as well as with a 10-nm wide filter centered at 645.7 nm in order to remove the contribution of continuum emission from the H-alpha images. Flux calibration was performed by observation of planetary nebulae for which calibrated spectrophotometry has been published. Comparison of the resulting H-alpha contour maps with published radio continuum maps permits determination of the distribution of obscuring dust within each nebula. Future H-beta observations will be used to prepare contour maps of the reddening within each nebula, which will in turn provide insight into variations of grain properties within HII regions. This research is supported by grants from the National Science Foundation Research Experience for Undergraduates program and from the American Astronomical Society.

Affiliated with

Also associated with

No associations

Rating

Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions 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 Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Insight into Excitement: Balmer-Line Imaging of Evolved Galactic HII Regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1172659