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American Astronomical Society, Astrophysical Journal, 2(794), p. 158, 2014

DOI: 10.1088/0004-637x/794/2/158

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The GEMINI NICI PLANET-FINDING CAMPAIGN: THE ORBIT OF THE YOUNG EXOPLANET β PICTORIS B

Journal article published in 2014 by Eric L. Nielsen ORCID, Michael C. Liu, Zahed Wahhaj ORCID, Beth A. Biller, Thomas L. Hayward ORCID, Jared R. Males, Laird M. Close, Katie M. Morzinski ORCID, Andrew J. Skemer ORCID, Marc J. Kuchner, Timothy J. Rodigas, Philip M. Hinz, Mark Chun, Christ Ftaclas ORCID, Douglas W. Toomey ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present new astrometry for the young (12--21 Myr) exoplanet beta Pictoris b taken with the Gemini/NICI and Magellan/MagAO instruments between 2009 and 2012. The high dynamic range of our observations allows us to measure the relative position of beta Pic b with respect to its primary star with greater accuracy than previous observations. Based on a Markov Chain Monte Carlo analysis, we find the planet has an orbital semi-major axis of 9.1 (+5.3, -0.5) AU and orbital eccentricity