Free Access
Astron. Astrophys. Suppl. Ser.
Volume 129, Number 3, May_I 1998
Page(s) 505 - 515
Published online 15 May 1998
DOI: 10.1051/aas:1998202

A&A Supplement series, Vol. 129, May I 1998, 505-515

Received April 1; accepted October 6, 1997

Determination of the temperatures of selected ISO flux calibration stars using the Infrared Flux Methodgif

D.E. Blackwell - A.E. Lynas-Gray

Send offprint request: D.E. Blackwell
Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK


Effective temperatures for 420 stars with spectral types between A0 and K3, and luminosity classes between II and V, selected for a flux calibration of the Infrared Space Observatory, ISO, have been determined using the Infrared Flux Method (IRFM). The determinations are based on narrow and wide band photometric data obtained for this purpose, and take into account previously published narrow-band measures of temperature. Regression coefficients are given for relations between the determined temperatures and the photometric parameters (B2-V1), (b-y) and (B-V), corrected for interstellar extinction through use of Hipparcos parallaxes. A correction for the effect of metallicity on the determination of integrated flux is proposed. The importance of a knowledge of metallicity in the representation of derived temperatures for Class V, IV and III stars by empirical functions is discussed and formulae given. An estimate is given for the probable error of each temperature determination.

keywords: stars: fundamental parameters -- temperatures

Copyright by the European Southern Observatory (ESO)

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.