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The WFC3 Galactic Bulge Treasury Program: Metallicity Estimates for the Stellar Population and Exoplanet Hosts
Galaxy bulge — Galaxy formation — Galaxy stellar content — stars
2010/11/10
We present new UV-to-IR stellar photometry of four low-extinction windows in the Galactic bulge, obtained with the Wide Field Camera 3 on the Hubble Space Telescope (HST). Using our five bandpasses, w...
Short Lifetime of Protoplanetary Disks in Low-metallicity Environments
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
We studied near-infrared disk fractions of six young clusters in the low-metallicity environments with [O/H$] \sim -0.7$ using deep $JHK$ images with Subaru 8.2\,m telescope.
Radial Velocity and Metallicity of the Globular Cluster IC4499 Obtained with AAOmega
Galaxy Astrophysics (astro-ph.GA)
2010/12/23
We present radial velocity and metallicity measurements for the far-southern Galactic globular cluster IC4499. We selected several hundred target red giant stars in and around the cluster from the 2MA...
Evidence of a thick disk rotation-metallicity correlation
thick disk rotation-metallicity correlation galactic disks
2010/3/8
We analyze a new kinematic survey that includes accurate proper motions derived from SDSS DR7 positions, combined with multi-epoch measurements from the GSC-II database. By means of the SDSS spectro-p...
A New Metallicity Calibration for Dwarf Stars with RGU-Photometry
Metallicity RGU photometry Galactic structure
2010/4/13
We have adopted the procedure of Carney to obtain a metallicity calibration for dwarfs utilising RGU-photometry. For this purpose we selected 76 dwarfs of different metallicities from Carney and from ...