Abstract
Observations of standard stars are presented to define a new intermediate bandpass photometric system. A comprehensive description of the instrument, reduction procedures and calibration procedures is given, since some of the methods are new. Considerable effort was made to remove or reduce all sources of error in the photometry. Typical mean errors of a single observation in , Xi=mo.47-mo.ii, Xi=mi.i7-mi.47, and Xi=ms.ii-ms.i are 10, 9,12, and 13 thousandths of a magnitude, respectively. A preliminary absolute flux calibration is given, based on scanner observations of Willstrop and Code. An appendix contains a detailed treatment of the second-order terms in the absolute calibration and in atmospheric extinction. This paper is the second in a series on this photometric system. Additional papers will be concerned with applications of the system to stellar classification and to the study of the physical properties of variable stars.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
