NOAO > Observing Info > Approved Programs > 2001A-0365
|
NOAO > Observing Info > Approved Programs > 2001A-0365 |
|
PI: Heather Morrison, Case Western Reserve U, heather@vegemite.astr.cwru.edu
Address: 10900 Euclid Ave, Cleveland, OH 44106-7215, USA
CoI: John Arabadjis, MIT
CoI: Robbie Dohm-Palmer, Univ of Michigan
CoI: Ken Freeman, Mt Stromlo and Siding Springs Obs
CoI: Paul Harding, Steward Obs
CoI: Amina Helmi, Max Planck, Garching
CoI: Mario Mateo, Univ of Michigan
CoI: John Norris, Mt Stromlo and Siding Springs Obs
CoI: Ed Olszewski, Steward Obs
CoI: Chris Sneden, U Texas, Austin
Title: The Formation of the Outer Halo and the Mass of the Galaxy
Abstract:
With distant halo stars we can now map the outer Galactic halo,
where previously only satellite galaxies and a few globular clusters
were known. This is crucial for an understanding of the manner and
timescale of the assembly of the Milky Way's stellar halo and the total
mass and shape of its dark halo. Our previous work has proved that the
Washington photometric system, in conjunction with spectroscopy, is
capable of efficiently identifying halo giants out to 100 kpc or more.
We request followup spectroscopy to map velocity substructure, more
likely visible in the outer halo because of the long dynamical
timescales (our early results give tantalizing suggestions of streams),
and to utilize metal-poor giants to constrain the dark halo.
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 > 2001A-0365 |
|