Accepted Radial Velocity File Formats in EXOFAST

Documentation

About EXOFAST

Using the Service:
  1. Accessing EXOFAST
  2. Overview of the Inputs Tab
  3. Accepted Input File Formats:
  4. Editing and Plotting Input Files
  5. Input Parameters and Options
  6. Output Parameters and Products
  7. Accessing Previous Results
  8. Usage Tips and Troubleshooting

Recipe: Run a Simple Fit
Recipe: Run an Advanced Fit
Acknowledgments

The EXOFAST interface accepts time series uploaded by users in a similar way to the periodogram service. If the service is not accepting your input file, make sure it fits the following formatting rules.

Please note that input tables are limited to 5,000 lines to avoid excessive processing times and to balance server resources.

Units must be as specified below, or the fit will be wrong or fail.

Radial Velocity Time Series

The RV file must contain at least three columns:

  1. Time (BJD_TDB—See Eastman et al. 2010)
  2. Radial velocity (m/s)
  3. Radial velocity error (m/s)

Any additional columns will be ignored.

Example: Radial velocity time series for HAT-P-3 b

Input File Format


  • File Name:
    • Acceptable: alpha-numeric characters, underscore ( _ ), hyphen ( - ) period ( . ), plus ( + ), and colon ( : ).
    • Not accepted: Spaces, quotation marks ( " or ' ), and file names cannot start with a period (e.g. ".lightcurveTransit.txt").
  • Format: ASCII (plain text), preferably with a .txt file extension, but other file extensions are accepted. (Note that the interface is able to parse space-separated, comma-separated, and IPAC format tables, among others.)
  • Headers: In the absence of a header row, the service initially assigns the first two non-character, non-zero-deviation columns as the time and flux columns, respectively. The third non-character column is assigned as the uncertainty column. Any additional columns are assumed to be detrending vectors.
  • Column separators: Data may be separated by commas, spaces, tabs or pipes ( | ).
  • Blank rows are filtered out.
  • NaN values must be explicitly identified in the header (in IPAC table format), or replaced with a blank space.

Other Standards

All RV time series files returned by the NASA Exoplanet Archive are accepted. However, the files are subject to the line number limit described above.

«Previous Accepted Transit File Formats Editing and Plotting Input Files Next »



Last updated: 198 July 2017