NOAO > Observing Info > Approved Programs > 2013A-0141
|
NOAO > Observing Info > Approved Programs > 2013A-0141 |
|
PI: Carl Melis, UC San Diego, cmelis@ucsd.edu
Address: Center for Astrophysics and Space Sciences, CASS 0424 9500 Gilman Dr., La Jolla, CA 92093-0424, USA
CoI: Mark Reid, Harvard/CfA
CoI: John Stauffer, IPAC/Caltech
CoI: Amy Mioduszewski, NRAO
Title: Toward a Resolution of the Pleiades Distance Controversy
Abstract:
The Pleiades open cluster serves as a cornerstone for programs which
use main-sequence fitting to derive distances. This role is called into
question by the ``Pleiades distance controversy". We are using very-
long baseline radio interferometry (VLBI) to derive a new, independent
trigonometric parallax distance to the Pleiades. Many of our VLBI
targets appear to have binary-induced astrometric motion and the VLBI
data alone do not allow robust combined orbital and parallax fits. We
request Keck adaptive optics time to detect or constrain binary
companions to our VLBI targets and thus provide valuable orbital priors
to our astrometric fits.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
|
NOAO > Observing Info > Approved Programs > 2013A-0141 |
|