The Problems with Vega

Details The Problems with Vega The Problems with Vega

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..364..305g&link_type=abstract

The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 364, Proceedings of

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Scientific paper

The problems associated with maintaining Vega as the primary spectrophotometric standard are reviewed. These difficulties include the possible photometric variability of Vega, its status as a rapid rotator seen pole-on, which complicates the use of models to extend the optical calibration into the infrared and ultraviolet, and the presence of significant infrared excesses from the K-band longward due to Vega's debris disk. These problems are significant enough that the astronomical community should consider finding another fundamental calibrator.

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