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- An atlas of spectrophotometric landolt standard stars
- Stritzinger, Maximilian; Suntzeff, Nicholas B.; Hamuy, Mario; Challis, Peter; Demarco, Ricardo; Germany, Lisa M.; Soderberg, A.M.
- We present CCD observations of 102 Landolt standard stars obtained with the Ritchey-Chrétien spectrograph on the Cerro Tololo Inter-American Observatory 1.5 m telescope. Using stellar atmosphere models, we have extended the flux points to our six spectrophotometric secondary standards, in both the blue and the red, allowing us to produce flux-calibrated spectra that span a wavelength range from 3050 Å to 1.1 µm. Mean differences between UBVRI spectrophotometry computed using Bessell's standard passbands and Landolt's published photometry were determined to be 1% or less. Observers in both hemispheres will find these spectra useful for flux-calibrating spectra, and through the use of accurately constructed instrumental passbands, will be able to compute accurate corrections to bring instrumental magnitudes to any desired standard photometric system (S-corrections). In addition, by combining empirical and modeled spectra of the Sun, Sirius, and Vega, we calculate and compare synthetic photometry to observed photometry taken from the literature for these three stars.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies
- Publications of the Astronomical Society of the Pacific, Vol. 117, no. 834 (2005), pp. 810-822
- Publication year
- University of Chicago Press
- Publisher URL
- Copyright © 2005 The Astronomical Society of the Pacific. Published version of the paper reproduced in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed