First radial velocity results from the MINiature Exoplanet Radial Velocity Array (MINERVA)

Date Issued
2019-09-01Publisher Version
10.1088/1538-3873/ab33c5Author(s)
Wilson, Maurice L.
Eastman, Jason D.
Cornachione, Matthew A.
Wang, Sharon X.
Johnson, Samson A.
Sliski, David H.
Schap III, William J.
Morton, Timothy D.
Johnson, John Asher
McCrady, Nate
Wright, Jason T.
Wittenmyer, Robert A.
Plavchan, Peter
Blake, Cullen H.
Swift, Jonathan J.
Bottom, Michael
Baker, Ashley D.
Barnes, Stuart I.
Berlind, Perry
Blackhurst, Eric
Beatty, Thomas G.
Bolton, Adam S.
Cale, Bryson
Calkins, Michael L.
Colón, Ana
Vera, Jon de
Esquerdo, Gilbert
Falco, Emilio E.
Fortin, Pascal
Garcia-Mejia, Juliana
Geneser, Claire
Gibson, Steven R.
Grell, Gabriel
Groner, Ted
Halverson, Samuel
Hamlin, John
Henderson, M.
Horner, J.
Houghton, Audrey
Janssens, Stefaan
Jonas, Graeme
Jones, Damien
Kirby, Annie
Lawrence, George
Luebbers, Julien Andrew
Muirhead, Philip S.
Myles, Justin
Nava, Chantanelle
Rivera-García, Kevin O.
Reed, Tony
Relles, Howard M.
Riddle, Reed
Robinson, Connor
de Saintonge, Forest Chaput
Sergi, Anthony
Metadata
Show full item recordPermanent Link
https://hdl.handle.net/2144/39809Version
Published version
Citation (published version)
Maurice L. Wilson, Jason D. Eastman, Matthew A. Cornachione, Sharon X. Wang, Samson A. Johnson, David H. Sliski, William J. Schap III, Timothy D. Morton, John Asher Johnson, Nate McCrady, Jason T. Wright, Robert A. Wittenmyer, Peter Plavchan, Cullen H. Blake, Jonathan J. Swift, Michael Bottom, Ashley D. Baker, Stuart I. Barnes, Perry Berlind, Eric Blackhurst, Thomas G. Beatty, Adam S. Bolton, Bryson Cale, Michael L. Calkins, Ana Colón, Jon de Vera, Gilbert Esquerdo, Emilio E. Falco, Pascal Fortin, Juliana Garcia-Mejia, Claire Geneser, Steven R. Gibson, Gabriel Grell, Ted Groner, Samuel Halverson, John Hamlin, M. Henderson, J. Horner, Audrey Houghton, Stefaan Janssens, Graeme Jonas, Damien Jones, Annie Kirby, George Lawrence, Julien Andrew Luebbers, Philip S. Muirhead, Justin Myles, Chantanelle Nava, Kevin O. Rivera-García, Tony Reed, Howard M. Relles, Reed Riddle, Connor Robinson, Forest Chaput de Saintonge, Anthony Sergi. 2019. "First Radial Velocity Results From the MINiature Exoplanet Radial Velocity Array (MINERVA)." Publications of the Astronomical Society of the Pacific, Volume 131, Issue 1005, pp. 115001 - 115001. https://doi.org/10.1088/1538-3873/ab33c5Abstract
The MINiature Exoplanet Radial Velocity Array (MINERVA) is a dedicated observatory of four 0.7 m robotic telescopes fiber-fed to a KiwiSpec spectrograph. The MINERVA mission is to discover super-Earths in the habitable zones of nearby stars. This can be accomplished with MINERVA's unique combination of high precision and high cadence over long time periods. In this work, we detail changes to the MINERVA facility that have occurred since our previous paper. We then describe MINERVA's robotic control software, the process by which we perform 1D spectral extraction, and our forward modeling Doppler pipeline. In the process of improving our forward modeling procedure, we found that our spectrograph's intrinsic instrumental profile is stable for at least nine months. Because of that, we characterized our instrumental profile with a time-independent, cubic spline function based on the profile in the cross dispersion direction, with which we achieved a radial velocity precision similar to using a conventional "sum-of-Gaussians" instrumental profile: 1.8 m s−1 over 1.5 months on the RV standard star HD 122064. Therefore, we conclude that the instrumental profile need not be perfectly accurate as long as it is stable. In addition, we observed 51 Peg and our results are consistent with the literature, confirming our spectrograph and Doppler pipeline are producing accurate and precise radial velocities.
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