Woodley, Kristin A., Harris, William E., Puzia, Thomas H., Gomez, Matias, Harris, Gretchen L. H., Geisler, Doug
We present new integrated light spectroscopy of globular clusters (GCs) in NGC 5128 in order to measure radial velocities and derive ages, metallicities, and alpha-element abundance ratios. Using...
The remnants of galaxy formation from a panoramic survey of the region around M31 (2009)
McConnachie, Alan W., Irwin, Michael J., Ibata, Rodrigo A., Dubinski, John, Widrow, Lawrence M., Martin, Nicolas F., ...
In hierarchical cosmological models, galaxies grow in mass through the continual accretion of smaller ones. The tidal disruption of these systems is expected to result in loosely bound stars...
Goudfrooij, Paul, Puzia, Thomas H., Kozhurina-Platais, Vera, Chandar, Rupali
The Advanced Camera for Surveys on board the Hubble Space Telescope has been used to obtain deep, high-resolution images of the intermediate-age star cluster NGC 1846 in the Large Magellanic Cloud....
Georgiev, Iskren Y., Hilker, Michael, Puzia, Thomas H., Goudfrooij, Paul, Baumgardt, Holger
(Abridged) Using luminosities and structural parameters of globular clusters (GCs) in the nuclear regions (nGCs) of low-mass dwarf galaxies from HST/ACS imaging we derive the present-day escape...
Globular Cluster Populations in Four Early-Type Poststarburst Galaxies (2008)
Maybhate, Aparna, Goudfrooij, Paul, Schweizer, Francois, Puzia, Thomas H., Carter, David
We present a study of the globular cluster systems of four early-type poststarburst galaxies using deep g and I-band images from the ACS camera aboard the Hubble Space Telescope (HST). All the...
Georgiev, Iskren Y., Puzia, Thomas H., Hilker, Michael, Goudfrooij, Paul
We investigate the old globular cluster (GC) population of 68 faint (Mv>-16 mag) dwarf galaxies located in the halo regions of nearby (
The Rotating Nuclear Star Cluster in NGC 4244 (2008)
Seth, Anil C., Blum, Robert D., Bastian, Nate, Caldwell, Nelson, Debattista, Victor P., Puzia, Thomas H.
We present observations of the nuclear star cluster in the nearby edge-on spiral galaxy NGC 4244 using the Gemini Near-Infrared Integral Field Spectrograph (NIFS) with laser guide star adaptive...
Old globular clusters in magellanic-type dwarf irregular galaxies (2008)
Georgiev, Iskren Y., Goudfrooij, Paul, Puzia, Thomas H., Hilker, Michael
We present a study of the old globular clusters (GC) using archival F606W and F814W HST/ACS images of 19 Magellanic-type dwarf Irregular (dIrr) galaxies found in nearby (2 - 8 Mpc) associations of...
The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design (2008)
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma cluster (Abell 1656). The survey was designed to...
Stars, gas and dust in elliptical galaxies (2008)
Pipino, Antonio, Matteucci, Francesca, Puzia, Thomas H.
I will present recent theoretical results on the formation and the high redshift assembly of spheroids. These findings have been obtained by utilising different and complementary techniques:...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
Thomas H. Puzia, Roberto P. Saglia, Markus Kissler-patig, Claudia Maraston, Laura Greggio, Alvio Renzini, ...
Abstract. We present a comprehensive spectroscopic study of the integrated light of metal-rich Galactic globular clusters and the stellar population in the Galactic bulge. We measure line indices...
VLT Spectroscopy of Globular Clusters in Low Surface Brightness Dwarf Galaxies (2007)
Puzia, Thomas H., Sharina, Margarita E.
We present VLT/FORS2 spectroscopic observations of globular clusters (GCs) in five low surface brightness (LSB) dwarf galaxies: KK211 and KK221, which are both dwarf spheroidal satellites (dSph) of...
Evidence for the Evolution of Young Early-Type Galaxies in the GOODS/CDF-S Field (2007)
Puzia, Thomas H., Mobasher, Bahram, Goudfrooij, Paul
We have developed an efficient photometric technique for identifying young early-type galaxy candidates using a combination of photometric redshifts, spectral-type classification, and...
Pipino, Antonio, Puzia, Thomas H., Matteucci, Francesca
The most massive elliptical galaxies show a prominent multi-modality in their globular cluster system color distributions. Understanding the mechanisms which lead to multiple globular cluster...
ACS/WFC: Differential CTE corrections for (2007)
Vera Kozhurina-platais, Paul Goudfrooij, Thomas H. Puzia
We present an analysis of the Charge Transfer Efficiency correction for a science project using high-precision photometry in a rather crowded field derived with the “effective PSF” (ePSF) method...
A Database of 2MASS Near-Infrared Colors of Magellanic Cloud Star Clusters (2006)
Pessev, Peter M., Goudfrooij, Paul, Puzia, Thomas H., Chandar, Rupali
The (rest-frame) near-IR domain contains important stellar population diagnostics and is often used to estimate masses of galaxies at low as well as high redshifts. However, many stellar population...
A Genuine Intermediate-Age Globular Cluster in M33 (2006)
Chandar, Rupali, Puzia, Thomas H., Sarajedini, Ata, Goudfrooij, Paul
We present deep integrated-light spectroscopy of nine M33 globular clusters taken with the Hectospec instrument at the MMT Observatory. Based on our spectroscopy and previous deep color-magnitude...
Puzia, Thomas H., Kissler-Patig, Markus, Goudfrooij, Paul
We compare [alpha/Fe], metallicity, and age distributions of globular clusters in elliptical, lenticular, and spiral galaxies, which we derive from Lick line index measurements. We find a large...
The old globular cluster system of the dIrr galaxy NGC1427A in the Fornax cluster (2006)
Georgiev, Iskren Y., Hilker, Michael, Puzia, Thomas H., Chaname, Julio, Mieske, Steffen, Goudfrooij, Paul, ...
We present a study of the old globular cluster (GC) population of the dwarf irregular galaxy NGC 1427A using multi-wavelength VLT observations in U, B, V, I, H_alpha, J, H, and Ks bands under...
The Ages of Globular Clusters in NGC 4365 Revisited with Deep HST Observations (2005)
Kundu, Arunav, Zepf, Stephen E., Hempel, Maren, Morton, David, Ashman, Keith M., Maccarone, Thomas J., ...
We present new Hubble Space Telescope (HST)-NIC3, near-infrared H-band photometry of globular clusters (GC) around NGC 4365 and NGC 1399 in combination with archival HST-WCPC2 and ACS optical data....
Sharina, Margarita E., Puzia, Thomas H., Makarov, Dmitry I.
Fifty-seven nearby low surface brightness dwarf galaxies were searched for globular cluster candidates (GCCs) using Hubble Space Telescope WFPC2 imaging in V and I. The sample consists of 18 dwarf...
Puzia, Thomas H., Kissler-Patig, Markus, Thomas, Daniel, Maraston, Claudia, Saglia, Roberto P., Bender, Ralf, ...
An analysis of ages, metallicities, and [alpha/Fe] ratios of globular cluster systems in early-type galaxies is presented, based on Lick index measurements summarized in Puzia et al. (2004, Paper I...
New Light on the Formation and Evolution of M31 and its Globular Cluster System (2005)
Puzia, Thomas H., Perrett, Kathy M., Bridges, Terry J.
We present spectroscopic ages, metallicities, and [alpha/Fe] ratios for 70 globular clusters in M31 that were derived from Lick line-index measurements. In addition to a population of old (>10 Gyr)...
Extragalactic Globular Clusters in the Near Infrared: III. NGC 5846 and NGC 7192 (2003)
Hempel, Maren, Hilker, Michael, Kissler-Patig, Markus, Puzia, Thomas H., Minniti, Dante, Goudfrooij, Paul
In this third paper of our series on near-IR and optical photometry of globular cluster systems in early-type galaxies we concentrate on the photometric results for NGC 5846 and NGC 7192, two group...
Kundu, Arunav, Maccarone, Thomas J., Zepf, Stephen E., Puzia, Thomas H.
We have studied the low mass X-ray binary (LMXB) populations within and outside globular clusters (GC) in NGC 4365 and NGC 3115. Using published age and metallicity constraints from optical and IR...
Extragalactic globular cluster systems / (2003)
Thesis (Doctoral)--Ludwig-Maximilians-Universität München, 2003.
Evidence for an intermediate-age, metal-rich population of globular clusters in NGC 4365 (2003)
Larsen, Soren S., Brodie, Jean P., Beasley, Michael A., Forbes, Duncan A., Kissler-Patig, Markus, Kuntschner, Harald, ...
Abstract not available.
Evidence for an intermediate-age, metal-rich population of globular clusters in NGC 4365 (2003)
Larsen, Soren S., Brodie, Jean P., Beasley, Michael A., Forbes, Duncan A., Kissler-Patig, Markus, Kuntschner, Harald, ...
Abstract not available.
Relative Ages of Globular Clusters (2002)
Ages of extragalactic globular clusters can provide valuable insights into the formation and evolution of galaxies. In this contribution the photometric methods of age dating old globular cluster...
Puzia, Thomas H., Saglia, Roberto P., Kissler-Patig, Markus, Maraston, Claudia, Greggio, Laura, Renzini, Alvio, ...
We present a comprehensive spectroscopic study of the integrated light of metal-rich Galactic globular clusters and the stellar population in the Galactic bulge. We measure line indices which are...
Puzia, Thomas H., Zepf, Stephen E., Kissler-Patig, Markus, Hilker, Michael, Minniti, Dante, Goudfrooij, Paul
We combine near-infrared photometry obtained with the VLT/ISAAC instrument and archival HST/WFPC2 optical images to determine VIK magnitudes and colours of globular clusters in two early-type...
Puzia, Thomas H., Kissler-Patig, Markus, Brodie, Jean P., Schroder, Linda L.
The properties of globular clusters in dwarf galaxies are key to understanding the formation of globular cluster systems, and in particular in verifying scenarios in which globular cluster systems of...
The Age Difference between the Globular Cluster Sub-populations in NGC 4472 (1999)
Puzia, Thomas H., Kissler-Patig, Markus, Brodie, Jean P., Huchra, John P.
The age difference between the two main globular cluster sub-populations in the Virgo giant elliptical galaxy, NGC 4472 (M 49), has been determined using HST WFPC2 images in the F555W and F814W...