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High resolution infrared spectra of bulge globular clusters: Liller~1 and NGC 6553
Livia Origlia, R. Michael Rich, Sandra Castro
Using the NIRSPEC spectrograph at Keck II, we have obtained echelle spectra covering the range 1.5-1.8um for 2 of the brightest giants in Liller 1 and NGC 6553, old metal rich glob…
High-resolution HI Mapping of NGC 4038/9 ("The Antennae") and its Tidal Dwarf Galaxy Candidates
J. E. Hibbard, J. M. van der Hulst, J. E. Barnes +1
We present new VLA C+D-array HI observations and optical and NIR imaging of the well known interacting system NGC 4038/9, ``The Antennae''. The radio data reveal a wealth of gaseou…
The Age of the Galactic Bulge
R. Michael Rich
The dominant stellar population of the central bulge of the Milky Way is old, with roughly solar metallicity. The age is very similar to that of the old metal rich bulge globular c…
HST NICMOS Photometry of the reddened bulge globular clusters NGC 6528, Terzan 5, Liller 1, UKS 1 and Terzan 4
S. Ortolani, B. Barbuy, E. Bica +4
We present results from NICMOS Hubble Space Telescope observations of the reddened bulge globular clusters NGC 6528, Terzan 5, Liller 1, UKS 1 and Terzan 4, obtained through the fi…
The Unique Type Ia Supernova 2000cx in NGC 524
Weidong Li, Alexei V. Filippenko, Elinor Gates +8
We present extensive photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2000cx in the S0 galaxy NGC 524, which reveal it to be peculiar. Photometrically, S…
New Analyses of Star-to-Star Abundance Variations Among Bright Giants in the Mildly Metal-Poor Globular Cluster M5
Inese I. Ivans, Robert P. Kraft, Christopher Sneden +3
We present a chemical composition analysis of 36 giant stars in the mildly metal-poor globular cluster M5 (NGC 5904). The analysis makes use of high resolution data acquired at the…
A Survey of M31 Globular Clusters using WFPC2 on board HST
R. M. Rich, C. E. Corsi, M. Bellazzini +3
We report new, as yet unpublished HST/WFPC2 V, I photometry of 9 globular clusters in M31. These are part of a total sample of 19 clusters on M31 with well observed CMDs from HST.…
Mayall II = G1 in M31: Giant Globular Cluster or Core of a Dwarf Elliptical Galaxy ?
G. Meylan, A. Sarajedini, P. Jablonka +3
(Abridged version) Mayall II = G1 is one of the brightest globular clusters belonging to M31, the Andromeda galaxy. Our observations with HST/WFPC2 provide data for the (I vs. V-I)…
The White Dwarf Distance to the Globular Cluster 47 Tucanae and its Age
M. Zoccali, A. Renzini, S. Ortolani +9
We present a new determination of the distance (and age) of the Galactic globular cluster 47 Tucanae (NGC 104) based on the fit of its white dwarf (WD) cooling sequence with the em…
Spatial/Spectral Resolution of a Galactic Bulge K3 Giant Stellar Atmosphere via Gravitational Microlensing
S. Castro, R. W. Pogge, R. M. Rich +2
We present two Keck HIRES spectra (R=40,000) of a bulge K3 giant taken on successive nights during the second caustic crossing of the binary microlensing event EROS BLG-2000-5. Thi…