Skip to main content

Web Publications


AAVSO: Electronic Journal of the AAVSO (eJAAVSO) AAVSO HOME > publications > ejaavso

 
 
eJAAVSO

Three-Color Narrow-Band Photoelectric Photometry of Red Variables

pdf

Robert F. Wing

The Ohio State University, Columbus, OH 43210

 

Received: July 31, 1992

 

Abstract

 

A photometric system consisting of three near-infrared interference filters and designed for studies of red variable stars is described.  It represents a simplification of the writer's eight-color system of classification photometry and is intended for use with small telescopes and inexpensive instrumentation. The three filters measure an infrared magnitude, a color index, and an index of TiO band strength, which indicates the spectral type.  Measurements on this system should provide a valuable supplement to the visual light curves of red variable stars.  A set of standard stars is given which will enable observers to reduce their measurements to a system of absolute fluxes.  A procedure is described for deriving an index of TiO strength from the data and converting it to spectral type.

 

Link to ADS abstract, article and citation information

 
 
  search engine |  site map |  links |  contact us
 

Keywords:
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484