Clemson University TigerPrints Publications Physics and Astronomy 11-1-2005 Keck HIRES Spectroscopy of Four Candidate Solar Twins Jeremy R. King Clemson University,
[email protected] Ann M. Boesgaard University of Hawaii Simon C. Schuler Clemson University Follow this and additional works at: https://tigerprints.clemson.edu/physastro_pubs Recommended Citation Please use publisher's recommended citation. This Article is brought to you for free and open access by the Physics and Astronomy at TigerPrints. It has been accepted for inclusion in Publications by an authorized administrator of TigerPrints. For more information, please contact
[email protected]. The Astronomical Journal, 130:2318–2325, 2005 November # 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A. KECK HIRES SPECTROSCOPY OF FOUR CANDIDATE SOLAR TWINS Jeremy R. King Department of Physics and Astronomy, Clemson University, 118 Kinard Laboratory, Clemson, SC 29634-0978;
[email protected] Ann M. Boesgaard1 Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822;
[email protected] and Simon C. Schuler Department of Physics and Astronomy, Clemson University, 118 Kinard Laboratory, Clemson, SC 29634-0978;
[email protected] Received 2005 June 24; accepted 2005 July 13 ABSTRACT We use high signal-to-noise ratio, high-resolution Keck HIRES spectroscopy of four solar twin candidates (HIP 71813, 76114, 77718, and 78399) pulled from our Hipparcos-based Ca ii H and K survey to carry out parameter and abundance analyses of these objects. Our spectroscopic Teff estimates are 100 K hotter than the photometric scale of the recent Geneva-Copenhagen survey; several lines of evidence suggest the photometric temperatures are too cool at solar Teff.