The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-Age, Late-Type Binary NO UMa - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue The Astrophysical Journal Année : 2016

The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-Age, Late-Type Binary NO UMa

Joshua E. Schlieder
  • Fonction : Auteur
Andrew J. Skemer
  • Fonction : Auteur
Anne-Lise Maire
  • Fonction : Auteur
Silvano Desidera
  • Fonction : Auteur
Philip Hinz
  • Fonction : Auteur
Michael F. Skrutskie
  • Fonction : Auteur
Jarron Leisenring
  • Fonction : Auteur
Vanessa Bailey
  • Fonction : Auteur
Denis Defrère
  • Fonction : Auteur
Simone Esposito
Klaus G. Strassmeier
  • Fonction : Auteur
Michael Weber
Beth A. Biller
  • Fonction : Auteur
Esther Buenzli
  • Fonction : Auteur
Laird M. Close
  • Fonction : Auteur
Justin R. Crepp
  • Fonction : Auteur
Josh A. Eisner
  • Fonction : Auteur
Karl-Heinz Hofmann
  • Fonction : Auteur
Thomas Henning
Katie M. Morzinski
  • Fonction : Auteur
Dieter Schertl
  • Fonction : Auteur
Gerd Weigelt
  • Fonction : Auteur
Charles E. Woodward
  • Fonction : Auteur

Résumé

We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBT Interferometer Exozodi Exoplanet Common Hunt exoplanet imaging survey. Our H-, Ks-, and L‧-band observations resolve the system at angular separations <0.″09. The components exhibit significant orbital motion over a span of ∼7 months. We combine our imaging data with archival images, published speckle interferometry measurements, and existing spectroscopic velocity data to solve the full orbital solution and estimate component masses. The masses of the K2.0 ± 0.5 primary and K6.5 ± 0.5 secondary are 0.83 ± 0.02 M and 0.64 ± 0.02 M, respectively. We also derive a system distance of d = 25.87 ± 0.02 pc and revise the Galactic kinematics of NO UMa. Our revised Galactic kinematics confirm NO UMa as a nuclear member of the ∼500 Myr old Ursa Major moving group, and it is thus a mass and age benchmark. We compare the masses of the NO UMa binary components to those predicted by five sets of stellar evolution models at the age of the Ursa Major group. We find excellent agreement between our measured masses and model predictions with little systematic scatter between the models. NO UMa joins the short list of nearby, bright, late-type binaries having known ages and fully characterized orbits.

Based on data obtained with the STELLA robotic telescope in Tenerife, an AIP facility jointly operated by AIP and IAC.

Dates et versions

insu-03691570 , version 1 (09-06-2022)

Identifiants

Citer

Joshua E. Schlieder, Andrew J. Skemer, Anne-Lise Maire, Silvano Desidera, Philip Hinz, et al.. The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-Age, Late-Type Binary NO UMa. The Astrophysical Journal, 2016, 818, ⟨10.3847/0004-637X/818/1/1⟩. ⟨insu-03691570⟩
5 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More