Spectrophotometry of Very Bright Stars in the Southern Sky uri icon

abstract

  • 2017. The Astronomical Society of the Pacific. All rights reserved. We obtained spectra of 20 bright stars in the southern sky, including Sirius, Canopus, Betelgeuse, Rigel, Bellatrix, and Procyon, using the 1.5-m telescope at Cerro Tololo Inter-American Observatory and its grating spectrograph RCSPEC. A 7.5 magnitude neutral density filter was used to keep from saturating the CCD. Our spectra are tied to a Kurucz model of Sirius with T=9850 K, log g=4.30, and [Fe/H]=+0.4. Because Sirius is much less problematic than using Vega as a fundamental calibrator, the synthetic photometry of our stars constitutes a Sirius-based system that could be used as a new anchor for stellar and extragalactic photometric measurements.

published proceedings

  • PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC

altmetric score

  • 8.18

author list (cited authors)

  • Krisciunas, K., Suntzeff, N. B., Kelarek, B., Bonar, K., & Stenzel, J.

citation count

  • 8

complete list of authors

  • Krisciunas, Kevin||Suntzeff, Nicholas B||Kelarek, Bethany||Bonar, Kyle||Stenzel, Joshua

publication date

  • May 2017