CCD observations of the counterfan in PV Cephei

Details CCD observations of the counterfan in PV Cephei CCD observations of the counterfan in PV Cephei

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..669l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, March 1987, p. 669-671.

Astronomy and Astrophysics

Astronomy

12

Cepheid Variables, Charge Coupled Devices, Reflection Nebulae, Stellar Coronas, Stellar Mass Ejection, Brightness Distribution, Molecular Flow

Scientific paper

Deep CCD images of PV Cephei reveal a faint, red "counterfan", opposite the star from the optically prominent fan previously known. This counterfan is clearly associated with the redshifted lobe of the PV Cephei molecular outflow, and its detection supports the contention that cometary nebulae are the optical counterparts of bipolar molecular outflows. The relative colors of the two halves of the optical nebulosity can be explained by differential reddening between the two lobes. Photometry of the gap between the stellar image and the bright optical fan is consistent with this gap being totally "black", indicating either high (≡4) values of AV due to a circumstellar disk or a total lack of material within the gap.

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