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Journal Articles The Astronomical Journal Year : 2016

Dynamical Mass Measurement of the Young Spectroscopic Binary V343 Normae AaAb Resolved With the Gemini Planet Imager

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Eric L. Nielsen
  • Function : Author
Robert J. de Rosa
  • Function : Author
Jason Wang
  • Function : Author
Julien Rameau
  • Function : Author
Inseok Song
  • Function : Author
James R. Graham
  • Function : Author
Bruce Macintosh
Mark Ammons
  • Function : Author
Vanessa P. Bailey
  • Function : Author
Travis S. Barman
  • Function : Author
Joanna Bulger
  • Function : Author
Jeffrey K. Chilcote
  • Function : Author
Tara Cotten
  • Function : Author
Rene Doyon
  • Function : Author
Michael P. Fitzgerald
  • Function : Author
Katherine B. Follette
  • Function : Author
Alexandra Z. Greenbaum
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Pascale Hibon
  • Function : Author
Li-Wei Hung
  • Function : Author
Patrick Ingraham
  • Function : Author
Paul Kalas
Quinn M. Konopacky
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James E. Larkin
  • Function : Author
Jérôme Maire
  • Function : Author
Franck Marchis
Mark S. Marley
  • Function : Author
Christian Marois
Stanimir Metchev
  • Function : Author
Maxwell A. Millar-Blanchaer
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Rebecca Oppenheimer
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David W. Palmer
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Jenny Patience
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Marshall D. Perrin
Lisa A. Poyneer
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Laurent Pueyo
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Abhijith Rajan
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Fredrik T. Rantakyrö
  • Function : Author
Dmitry Savransky
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Adam C. Schneider
  • Function : Author
Anand Sivaramakrishnan
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Remi Soummer
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Sandrine Thomas
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J. Kent Wallace
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Kimberly Ward-Duong
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Sloane J. Wiktorowicz
  • Function : Author
Schuyler G. Wolff
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Abstract

We present new spatially resolved astrometry and photometry from the Gemini Planet Imager of the inner binary of the young multiple star system V343 Normae, which is a member of the β Pictoris (β Pic) moving group. V343 Normae comprises a K0 and mid-M star in a ∼4.5 year orbit (AaAb) and a wide 10″ M5 companion (B). By combining these data with archival astrometry and radial velocities we fit the orbit and measure individual masses for both components of {M}{Aa}=1.10+/- 0.10 {M} and {M}{Ab}=0.290+/- 0.018 {M}. Comparing to theoretical isochrones, we find good agreement for the measured masses and JHK band magnitudes of the two components consistent with the age of the β Pic moving group. We derive a model-dependent age for the β Pic moving group of 26 ± 3 Myr by combining our results for V343 Normae with literature measurements for GJ 3305, which is another group member with resolved binary components and dynamical masses.

Dates and versions

insu-03691474 , version 1 (09-06-2022)

Identifiers

Cite

Eric L. Nielsen, Robert J. de Rosa, Jason Wang, Julien Rameau, Inseok Song, et al.. Dynamical Mass Measurement of the Young Spectroscopic Binary V343 Normae AaAb Resolved With the Gemini Planet Imager. The Astronomical Journal, 2016, 152, ⟨10.3847/0004-6256/152/6/175⟩. ⟨insu-03691474⟩
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