THE ORBITS OF THE TRIPLE-STAR SYSTEM 1 GEMINORUM FROM PHASES DIFFERENTIAL ASTROMETRY AND SPECTROSCOPY

THE ORBITS OF THE TRIPLE-STAR SYSTEM 1 GEMINORUM FROM PHASES DIFFERENTIAL ASTROMETRY AND SPECTROSCOPY

We have used precise differential astrometry from the Palomar High-precision Astrometric Search for Exoplanet Systems project and radial-velocity measurements covering a time span of 40 yr to determine the orbital parameters of the 1 Geminorum triple system. We present the first detection of the spe...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Astrophysical journal 2014-03, Vol.783 (1), p.1-8
Hauptverfasser: Lane, Benjamin F, MUTERSPAUGH, MATTHEW W, Griffin, R F, Scarfe, C D, FEKEL, FRANCIS C, Williamson, Michael H, Eaton, Joel A, Shao, M, Colavita, M M, KONACKI, MACIEJ
Format: Artikel
Sprache:eng
Schlagworte:
Astrometry
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
DETECTION
DISTANCE
Extrasolar planets
INCLINATION
MASS
ORBITS
Phases
RADIAL VELOCITY
Searching
Spectral lines
SPECTROSCOPY
STARS
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We have used precise differential astrometry from the Palomar High-precision Astrometric Search for Exoplanet Systems project and radial-velocity measurements covering a time span of 40 yr to determine the orbital parameters of the 1 Geminorum triple system. We present the first detection of the spectral lines of the third component of the system, together with precise mass (0.5%) and distance (0.15%) determinations for this system. In addition, our astrometry allows us to make the first determination of the mutual inclination of the orbits.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/783/1/3