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A Systematic Study of IRAS Selected Proto-Planetary Nebula Candidates

Published online by Cambridge University Press:  07 August 2017

J.Y. Hu ,
B.W. Jiang ,
T. De Jong  and
S. Slijkhuis
J.Y. Hu
Affiliation:
Beijing Observatory, Academia Sinica, Beijing, 100080, China
B.W. Jiang
Affiliation:
Beijing Observatory, Academia Sinica, Beijing, 100080, China
T. De Jong
Affiliation:
Astronomical Institute, University of Amsterdam, The Netherlands
S. Slijkhuis
Affiliation:
Astronomical Institute, University of Amsterdam, The Netherlands

Extract

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A complete sample of PPN candidates was selected mainly based on the IRAS colors(Hu et al.,1990). For total 62 unknown objects in the sample we have made 1. ground-based infrared astrometry; 2. optical identifications; 3. near infrared and optical photometry; 4. optical spectroscopic observations; 5. radio molecular line observations(OH maser and CO thermal lines); and 6. check the optical variations from historical plates. Some additional observations such as high resolution spectraoscopic, optical/NIR CCD imaging observations for particularly interested objects were also carried out.

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 333
Copyright
Copyright © Kluwer 1993 

References

Hu, J.Y., de Jong, T., Slijkhuis, S.,1990, ‘From Miras to Planetary Nebulae’, 487–489.Google Scholar