Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pasp..113..463d&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 113, Issue 782, pp. 463-463.
Astronomy and Astrophysics
Astronomy
3
Ism: Herbig-Haro Objects, Methods: Data Analysis, Methods: Miscellaneous
Scientific paper
Owing to their spectral properties, Herbig-Haro (HH) objects can be discovered using photometric methods through a combination of filters, sampling the characteristic spectral lines and the nearby continuum. The data are commonly processed through direct visual inspection of the images. To make data reduction more efficient and the results more uniform and complete, an automated searching scheme for HH objects is developed to manipulate the images using IRAF. This approach helps to extract images with only intrinsic HH emissions. By using this scheme, the pointlike stellar sources and extended nebulous sources with continuum emission can be eliminated from the original images. The objects with only characteristic HH emission become prominent and can be easily picked up. In this paper our scheme is illustrated by a sample field and has been applied to our surveys for HH objects.
Deng Licai
Jiang Zhaoji
Yang Ji
Zheng Zhongyuan
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