When the discovery paper was published, residuals from the 1.34 day orbital solution indicated a companion with several possible periods. With additional radial velocity measurements over the following months, the authors became concerned that the period of the outer planet was converging on one year. After checking for potential sources of error, the authors determined that there was an error in the barycentric correction, and that the outer planet was a detection of Earth's orbital motion. Qatar-2 was the first target observed by TRES with negative declination, and this uncovered a bug in the code that parsed the sexigesimal declination—the minutes and seconds of arc were parsed as positive instead of negative. This resulted in a low amplitude modulation of the barycentric correction due to Earth's motion around the Sun. No other published result from TRES is affected by this error. A reanalysis using the correct barycentric velocity shows that the orbital solution for Qatar-2b is unchanged from the results published in the discovery paper.
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ERRATUM: "QATAR-2: A K DWARF ORBITED BY A TRANSITING HOT JUPITER AND A MORE MASSIVE COMPANION IN AN OUTER ORBIT" (2012, ApJ, 750, 84)
Marta L. Bryan, Khalid A. Alsubai, David W. Latham, Neil R. Parley, Andrew Collier Cameron, Samuel N. Quinn, Joshua A. Carter, Benjamin J. Fulton, Perry Berlind, Warren R. Brown, Lars A. Buchhave, Michael L. Calkins, Gilbert A. Esquerdo, Gábor Fűrész, Uffe Gråe Jørgensen, Keith D. Horne, Robert P. Stefanik, Rachel A. Street, Guillermo Torres, Richard G. West, Martin Dominik, Kennet B. W. Harpsøe, Christine Liebig, Sebastiano Calchi Novati, Davide Ricci, and Jesper F. Skottfelt
Published 2014 February 4 •
© 2014. The American Astronomical Society. All rights reserved.
The Astrophysical Journal,
Volume 782,
Number 2Citation Marta L. Bryan et al 2014 ApJ 782 121DOI 10.1088/0004-637X/782/2/121
This is a correction for 2012 ApJ 750 84
Marta L. Bryan
AFFILIATIONS
Department of Astronomy, Harvard University, Cambridge, MA 02138, USA
Khalid A. Alsubai
AFFILIATIONS
Qatar Foundation, P.O. Box 5825, Doha, Qatar
David W. Latham
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Neil R. Parley
AFFILIATIONS
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
Andrew Collier Cameron
AFFILIATIONS
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
Samuel N. Quinn
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Joshua A. Carter
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Benjamin J. Fulton
AFFILIATIONS
Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA
Perry Berlind
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Warren R. Brown
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Lars A. Buchhave
AFFILIATIONS
Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark
Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5, DK-1350 Copenhagen, Denmark
Michael L. Calkins
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Gilbert A. Esquerdo
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Gábor Fűrész
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Konkoly Observatory of the Hungarian Academy of Sciences, Budapest, Hungary
Uffe Gråe Jørgensen
AFFILIATIONS
Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark
Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5, DK-1350 Copenhagen, Denmark
Keith D. Horne
AFFILIATIONS
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
Robert P. Stefanik
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Rachel A. Street
AFFILIATIONS
Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA
Guillermo Torres
AFFILIATIONS
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Richard G. West
AFFILIATIONS
Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
Martin Dominik
AFFILIATIONS
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
Author notes
Royal Society University Research Fellow.
Kennet B. W. Harpsøe
AFFILIATIONS
Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark
Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5, DK-1350 Copenhagen, Denmark
Christine Liebig
AFFILIATIONS
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
Sebastiano Calchi Novati
AFFILIATIONS
Dipartimento di Fisica "E.R. Caianiello," Universita degli Studi di Salerno, Via S. Allende, I-84081 Baronissi (SA), Italy
INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Italy
Davide Ricci
AFFILIATIONS
Institut d'Astrophysique et de Géophysique, Allée du 6 Ao
t 17, Sart Tilman, Bât. B5c, B-4000 Liège, Belgium
Jesper F. Skottfelt
AFFILIATIONS
Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark
Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5, DK-1350 Copenhagen, Denmark
Notes
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Dates
- Received 2013 December 11
- Published 2014 February 4