Dotter, Aaron, Sarajedini, Ata, Anderson, Jay, Aparicio, Antonio, Bedin, Luigi R., Chaboyer, Brian, ...
The horizontal branch (HB) morphology of globular clusters (GCs) is most strongly influenced by metallicity. The second parameter phenomenon acknowledges that metallicity alone is not enough to...
HST's hunt for intermediate-mass black holes in star clusters (2009)
Chanamé, Julio, Bruursema, Justice, Chandar, Rupali, Anderson, Jay, Van Der Marel, Roeland, Ford, Holland
Establishing or ruling out, either through solid mass measurements or upper limits, the presence of intermediate-mass black holes (IMBHs) at the centers of star clusters would profoundly impact our...
Empirical PSFs and Distortion in the WFC Camera (2009)
A. M. Koekemoer, P. Goudfrooij, L. L. Dressel, Jay Anderson
Abstract. This report summarizes two upcoming ISRs, one on empirical models of the WFC PSF and the other on the distortion solution. Before we can come up with an accurate distortion solution, we...
Anderson, Jay, Van Der Marel, Roeland P.
We analyze data from the Hubble Space Telescope's Advanced Camera for Surveys of the globular cluster Omega Cen. We construct a photometric and proper-motion catalog using the GO-9442, GO-10252, and...
New Limits on an Intermediate Mass Black Hole in Omega Centauri: II. Dynamical Models (2009)
Van Der Marel, Roeland P., Anderson, Jay
We present a detailed dynamical analysis of the projected density and kinematical data available for the globular cluster Omega Cen. We solve the spherical anisotropic Jeans equation to predict the...
OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? (2009)
Dong, Subo, Gould, Andrew, Udalski, Andrzej, Anderson, Jay, Christie, G. W., Gaudi, B. S., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
Olling, Rob P., Allen, Ron J., Anderson, Jay, Chaboyer, Brian C., Freedman, Wendy, Guhathakurta, Puragra, ...
Abridged: The golden age of astrophysics is upon us with both grand discoveries (extra-solar planets, dark matter, dark energy) and precision cosmology. Fundamental understanding of the working of...
The NASA-UC Eta-Earth Program: I. A Super-Earth Orbiting HD 7924 (2009)
Howard, Andrew W., Johnson, John A., Marcy, Geoffrey W., Fischer, Debra A., Wright, Jason T., Henry, Gregory W., ...
We report the discovery of the first low-mass planet to emerge from the NASA-UC Eta-Earth Program, a super-Earth orbiting the K0 dwarf HD 7924. Keplerian modeling of precise Doppler radial velocities...
Helium-core white dwarfs in the globular cluster NGC 6397 (2009)
Strickler, Rachel R., Cool, Adrienne M., Anderson, Jay, Cohn, Haldan N., Lugger, Phyllis M., Serenelli, Aldo M.
The ACS Survey of Galactic Globular Clusters. VII. Relative Ages (2008)
Marin-Franch, Antonio, Aparicio, Antonio, Piotto, Giampaolo, Rosenberg, Alfred, Chaboyer, Brian, Sarajedini, Ata, ...
The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on observations from...
The WFC3 Galactic Bulge Treasury Program: A First Look at Resolved Stellar Population Tools (2008)
Brown, Thomas M., Sahu, Kailash, Zoccali, Manuela, Renzini, Alvio, Ferguson, Henry C., Anderson, Jay, ...
[Abridged] When WFC3 is installed on HST, the community will have powerful new tools for investigating resolved stellar populations. The WFC3 Galactic Bulge Treasury program will obtain deep imaging...
New Analysis of the Proper Motions of the Magellanic Clouds using HST/WFPC2 (2008)
Kallivayalil, Nitya, Van Der Marel, Roeland P., Anderson, Jay, Besla, Gurtina, Alcock, Charles
In HST Cycles 11 and 13 we obtained two epochs of ACS/HRC data for fields in the Magellanic Clouds centered on background quasars. We used these data to determine the proper motions of the LMC and...
Stellar Proper Motions in the Galactic Bulge from deep HST ACS/WFC Photometry (2008)
Clarkson, Will, Sahu, Kailash, Anderson, Jay, Smith, T. Ed., Brown, Thomas M., Rich, R. Michael, ...
We present stellar proper motions in the Galactic bulge from the Sagittarius Window Eclipsing Extrasolar Search (SWEEPS) project using ACS/WFC on HST. Proper motions are extracted for more than...
A Glimpse into the Past: The Recent Evolution of Globular Clusters (2008)
Kalirai, Jasonjot S., Strader, Jay, Richer, Harvey B., Anderson, Jay
We present the serendipitous discovery of 195 extragalactic globular clusters (GCs) in one of the deepest optical images ever obtained, a 126 orbit HST/ACS imaging study of the nearby Galactic GC NGC...
Deep advanced camera for surveys imaging in the globular cluster NGC 6397: dynamical models (2008)
Hurley, Jarrod R., Shara, Michael M., Richer, Harvey B., King, Ivan R., Davis, D. Saul, Kalirai, Jasonjot S., ...
We present N-body models to complement deep imaging of the metal-poor core-collapsed cluster NGC 6397 obtained with the Hubble Space Telescope. All simulations include stellar and binary evolution in...
Davis, D. Saul, Richer, Harvey B., Anderson, Jay, Brewer, J. H., Hurley, J., Kalirai, Jasonjot S., ...
Using Hubble Space Telescope observations of the globular cluster NGC 6397, we constrain the cluster's binary fraction. The observations consist of two fields: the primary science field, a single...
Deep advanced camera for surveys imaging in the globular cluster NGC 6397: reduction methods (2008)
Anderson, Jay, King, Ivan R., Richer, Harvey B., Fahlman, Gregory G., Hansen, Brad M. S., Hurley, Jarrod, ...
We describe here the reduction methods that we developed to study the faintest red dwarfs and white dwarfs in an outer field of NGC 6397, which was observed by HST for 126 orbits in 2005. The...
Richer, Harvey B., Dotter, Aaron, Hurley, Jarrod, Anderson, Jay, King, Ivan R., Davis, D. Saul, ...
We present the color-magnitude diagram (CMD) from deep Hubble Space Telescope imaging in the globular cluster NGC 6397. The Advanced Camera for Surveys (ACS) was used for 126 orbits to image a single...
Deep advanced camera for surveys imaging in the globular cluster NGC 6397: dynamical models (2008)
Hurley, Jarrod R., Shara, Michael M., Richer, Harvey B., King, Ivan R., Davis, D. Saul, Kalirai, Jasonjot S., ...
We present N-body models to complement deep imaging of the metal-poor core-collapsed cluster NGC 6397 obtained with the Hubble Space Telescope. All simulations include stellar and binary evolution in...
Davis, D. Saul, Richer, Harvey B., Anderson, Jay, Brewer, J. H., Hurley, J., Kalirai, Jasonjot S., ...
Using Hubble Space Telescope observations of the globular cluster NGC 6397, we constrain the cluster's binary fraction. The observations consist of two fields: the primary science field, a single...
Deep advanced camera for surveys imaging in the globular cluster NGC 6397: reduction methods (2008)
Anderson, Jay, King, Ivan R., Richer, Harvey B., Fahlman, Gregory G., Hansen, Brad M. S., Hurley, Jarrod, ...
We describe here the reduction methods that we developed to study the faintest red dwarfs and white dwarfs in an outer field of NGC 6397, which was observed by HST for 126 orbits in 2005. The...
Richer, Harvey B., Dotter, Aaron, Hurley, Jarrod, Anderson, Jay, King, Ivan R., Davis, D. Saul, ...
We present the color-magnitude diagram (CMD) from deep Hubble Space Telescope imaging in the globular cluster NGC 6397. The Advanced Camera for Surveys (ACS) was used for 126 orbits to image a single...
Probing the Faintest Stars in a Globular Star Cluster (2007)
Richer, Harvey B., Anderson, Jay, Brewer, James, Davis, Saul, Fahlman, Gregory G., Hansen, Brad M. S., ...
NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed the deepest ever color-magnitude diagram for this cluster. We...
The Space Motion of the Globular Cluster NGC 6397 (2007)
Kalirai, Jasonjot S., Anderson, Jay, Richer, Harvey B., King, Ivan R., Brewer, James P., Carraro, Giovanni, ...
As a by-product of high-precision, ultra-deep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background...
The space motion of the globular cluster NGC 6397 (2007)
Kalirai, Jasonjot S., Anderson, Jay, Richer, Harvey B., King, Ivan R., Brewer, James P., Carraro, Giovanni, ...
As a by-product of high-precision, ultradeep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background...
The space motion of the globular cluster NGC 6397 (2007)
Kalirai, Jasonjot S., Anderson, Jay, Richer, Harvey B., King, Ivan R., Brewer, James P., Carraro, Giovanni, ...
As a by-product of high-precision, ultradeep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background...
The space motion of the globular cluster NGC 6397 (2007)
Kalirai, Jasonjot S., Anderson, Jay, Richer, Harvey B., King, Ivan R., Brewer, James P., Carraro, Giovanni, ...
As a by-product of high-precision, ultradeep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background...
The white dwarf cooling sequence of NGC 6397 (2007)
Hansen, Brad M. S., Anderson, Jay, Brewer, James, Dotter, Aaron, Fahlman, Greg G., Hurley, Jarrod, ...
We present the results of a deep Hubble Space Telescope (HST) exposure of the nearby globular cluster NGC 6397, focussing attention on the cluster's white dwarf cooling sequence. This sequence is...
The space motion of the globular cluster NGC 6397 (2007)
Kalirai, Jasonjot S., Anderson, Jay, Richer, Harvey B., King, Ivan R., Brewer, James P., Carraro, Giovanni, ...
As a by-product of high-precision, ultradeep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background...
The white dwarf cooling sequence of NGC 6397 (2007)
Hansen, Brad M. S., Anderson, Jay, Brewer, James, Dotter, Aaron, Fahlman, Greg G., Hurley, Jarrod, ...
We present the results of a deep Hubble Space Telescope (HST) exposure of the nearby globular cluster NGC 6397, focussing attention on the cluster's white dwarf cooling sequence. This sequence is...
Jay Anderson, Colin Cox, Vera Kozhurina-platais, Matt Lallo
Astrometric calibrations of JWST will use observations of a reference field in the Large Magellanic Cloud. This field will itself be astrometrically calibrated using observations with ACS/WFC on HST....
Variation of the Distortion Solution of the WFC (2007)
During reduction of the Ultra Deep Field in 2004, it became apparent that the distortion solution constructed in 2002 did not allow images taken at different orientations to be mapped into each other...
Lensing signals in the Hubble Ultra-Deep Field using all 2nd order shape deformations (2006)
Irwin, John, Shmakova, Marina, Anderson, Jay
The long exposure times of the HST Ultra-Deep Field plus the use of an empirically derived position-dependent PSF, have enabled us to measure a cardioid/displacement distortion map coefficient as...
Identification of the OGLE-2003-BLG-235/MOA-2003-BLG-53 Planetary Host Star (2006)
Bennett, David P., Anderson, Jay, Bond, Ian A., Udalski, Andrzej, Gould, Andrew
We present the results of HST observations of the host star for the first definitive extrasolar planet detected by microlensing. The light curve model for this event predicts that the lens star...
Probing the faintest stars in a globular star cluster (2006)
Richer, Harvey B., Anderson, Jay, Brewer, James, Davis, Saul, Fahlman, Gregory G., Hansen, Brad M. S., ...
NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed an ultradeep color-magnitude diagram for this cluster. We see...
Probing the faintest stars in a globular star cluster (2006)
Richer, Harvey B., Anderson, Jay, Brewer, James, Davis, Saul, Fahlman, Gregory G., Hansen, Brad M. S., ...
NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed an ultradeep color-magnitude diagram for this cluster. We see...
Instrument Science Report ACS 2006-01 PSFs, Photometry, (2006)
We develop and present effective PSFs for the F606W filter in the WFC, and then for five other filters. After briefly reviewing the concept of the effective PSF, we show that the WFC PSF varies with...
Metallicities on the Double Main Sequence of omega Centauri Imply Large Helium Enhancement (2004)
Piotto, Giampaolo, Villanova, Sandro, Bedin, Luigi R., Gratton, Raffaele, Cassisi, Santi, Momany, Yazan, ...
Having shown in a recent paper that the main sequence of omega Centauri is split into two distinct branches, we now present spectroscopic results showing that the bluer sequence is_less_ metal-poor....
The Kinematic Design, Geoffrey Long, Jay Anderson, Johann Borenstein
This paper introduces the kinematic design of a novel vehicle capable of traversing extremely rugged terrain, such as the rubble of a collapsed building. The vehicle, called "OmniPede," is...
Jay Anderson Foodways research collection (1971)
Professor Jay Anderson's foodways research items: theses, books, and articles, correspondence with authors, etc.; most items are photocopies.; Organized in 4 series.; Historical Note; European Food...
Ronald V. Jensen Living Historical Farm Photographs (1852)
4,922 photos, negatives, and slides capturing the extensive research done on other living museums from across North America as well as historical photos of Cache Valley. There are also numerous...