AAVSO: American Association of Variable Star Observers

Multi-color Photometry of the Hot R Coronae Borealis Star and Proto-planetary Nebula V348 Sagittarii

Volume 47 number 1 (2019)

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Arlo U. Landolt
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803; landolt@phys.lsu.edu Visiting astronomer, Kitt Peak National Observatory, National Optical Astronomical Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation. Visiting astronomer, Cerro Tololo Inter-American Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation. Visiting astronomer; this work makes use of observations obtained at the Las Campanas Observatories.
James L. Clem
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803 (Current address: Department of Physics, Grove City College, Grove City, PA 16127); jclem@phys.lsu.edu Visiting astronomer, Cerro Tololo Inter-American Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.

Abstract

A long term program of precision photoelectric UBVRI photometry has been combined with AAVSO archival data for the hot, R CrB-type hydrogen deficient star and proto-planetary nebula, V348 Sgr. CCD data also are described. Since V348 Sgr is one of only four hot R CrB stars, it and other group members deserve continued attention by observers.