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Infrared Photometric Systems, Standards and Variability

Published online by Cambridge University Press:  12 April 2016

S.K. Leggett ,
J.A. Smith  and
T.D. Oswalt
S.K. Leggett
Affiliation:
U.S. Naval Observatory Flagstaff Station, USA Universities Space Research Association, USA Guest observers at the CTIO, IRTF and KPNO
J.A. Smith
Affiliation:
Florida Institute of Technology, USA Guest observers at the CTIO, IRTF and KPNO
T.D. Oswalt
Affiliation:
Florida Institute of Technology, USA Guest observers at the CTIO, IRTF and KPNO

Abstract

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The accuracy with which infrared photometry can be carried out is currently limited by poor definition of the instrumental system and by the accuracy of the available standard stars. We present new colour transformations between the CIT J, H, K photometric system and systems currently in use at Cerro Tololo, Mauna Kea and Kitt Peak. The precision of the J, H, K data for some of the stars observed by Elias et al. is improved and the system extended to fainter stars suitable for use with larger telescopes and/or infrared arrays. Evidence of infrared variability has been detected for one M dwarf star in our programme.

Type
Session 1 Photometric Systems
Information
International Astronomical Union Colloquium , Volume 136: Stellar Photometry – Current Techniques and Future Developments , 1993 , pp. 66 - 72
Copyright
Copyright © C.J. Butler and I. Elliottt 1993

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