skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY

Abstract

The radial velocity-discovered exoplanet HD 97658b was recently announced to transit, with a derived planetary radius of 2.93 {+-} 0.28 R{sub Circled-Plus }. As a transiting super-Earth orbiting a bright star, this planet would make an attractive candidate for additional observations, including studies of its atmospheric properties. We present and analyze follow-up photometric observations of the HD 97658 system acquired with the Microvariability and Oscillations of STars space telescope. Our results show no transit with the depth and ephemeris reported in the announcement paper. For the same ephemeris, we rule out transits for a planet with radius larger than 2.09 R{sub Circled-Plus }, corresponding to the reported 3{sigma} lower limit. We also report new radial velocity measurements which continue to support the existence of an exoplanet with a period of 9.5 days, and obtain improved orbital parameters.

Authors:
; ;  [1]; ;  [2];  [3];  [4];  [5]; ;  [6];  [7];  [8];  [9];  [10]
  1. Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T1Z1 (Canada)
  2. Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)
  3. Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Blvd., Box 9501, Nashville, TN 37209 (United States)
  4. Department of Astronomy and Physics, St. Marys University Halifax, NS B3H 3C3 (Canada)
  5. Department of Astronomy, California Institute of Technology, 1200 East California Boulevard, MC 249-17, Pasadena, CA 91125 (United States)
  6. Universitaet Wien, Institut fuer Astronomie, Tuerkenschanzstrasse 17, A1180 Wien (Austria)
  7. Dept de physique, Univ de Montreal C.P. 6128, Succ. Centre-Ville, Montreal, QC H3C 3J7, and Obs. du mont Megantic (Canada)
  8. NASA Ames Research Center, Moffett Field, CA 94035 (United States)
  9. Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4 (Canada)
  10. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
Publication Date:
OSTI Identifier:
22078441
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 759; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DEPTH; OSCILLATIONS; PHOTOMETRY; PLANETS; RADIAL VELOCITY; STARS; TELESCOPES

Citation Formats

Dragomir, Diana, Matthews, Jaymie M., Antoci, Victoria, Howard, Andrew W., Marcy, Geoffrey W., Henry, Gregory W., Guenther, David B., Johnson, John A., Kuschnig, Rainer, Weiss, Werner W., Moffat, Anthony F. J., Rowe, Jason F., Rucinski, Slavek M., and Sasselov, Dimitar, E-mail: diana@phas.ubc.ca. NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY. United States: N. p., 2012. Web. doi:10.1088/2041-8205/759/2/L41.
Dragomir, Diana, Matthews, Jaymie M., Antoci, Victoria, Howard, Andrew W., Marcy, Geoffrey W., Henry, Gregory W., Guenther, David B., Johnson, John A., Kuschnig, Rainer, Weiss, Werner W., Moffat, Anthony F. J., Rowe, Jason F., Rucinski, Slavek M., & Sasselov, Dimitar, E-mail: diana@phas.ubc.ca. NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY. United States. doi:10.1088/2041-8205/759/2/L41.
Dragomir, Diana, Matthews, Jaymie M., Antoci, Victoria, Howard, Andrew W., Marcy, Geoffrey W., Henry, Gregory W., Guenther, David B., Johnson, John A., Kuschnig, Rainer, Weiss, Werner W., Moffat, Anthony F. J., Rowe, Jason F., Rucinski, Slavek M., and Sasselov, Dimitar, E-mail: diana@phas.ubc.ca. Sat . "NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY". United States. doi:10.1088/2041-8205/759/2/L41.
@article{osti_22078441,
title = {NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY},
author = {Dragomir, Diana and Matthews, Jaymie M. and Antoci, Victoria and Howard, Andrew W. and Marcy, Geoffrey W. and Henry, Gregory W. and Guenther, David B. and Johnson, John A. and Kuschnig, Rainer and Weiss, Werner W. and Moffat, Anthony F. J. and Rowe, Jason F. and Rucinski, Slavek M. and Sasselov, Dimitar, E-mail: diana@phas.ubc.ca},
abstractNote = {The radial velocity-discovered exoplanet HD 97658b was recently announced to transit, with a derived planetary radius of 2.93 {+-} 0.28 R{sub Circled-Plus }. As a transiting super-Earth orbiting a bright star, this planet would make an attractive candidate for additional observations, including studies of its atmospheric properties. We present and analyze follow-up photometric observations of the HD 97658 system acquired with the Microvariability and Oscillations of STars space telescope. Our results show no transit with the depth and ephemeris reported in the announcement paper. For the same ephemeris, we rule out transits for a planet with radius larger than 2.09 R{sub Circled-Plus }, corresponding to the reported 3{sigma} lower limit. We also report new radial velocity measurements which continue to support the existence of an exoplanet with a period of 9.5 days, and obtain improved orbital parameters.},
doi = {10.1088/2041-8205/759/2/L41},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 759,
place = {United States},
year = {2012},
month = {11}
}