J. A. R. Caldwell

Publication List Details

Period

1996 - 2008

Number

67

Co-Authors

Obscured star formation in intermediate-density environments: A Spitzer study of the Abell 901/902 supercluster (2008)

Gallazzi, A., Bell, E. F., Wolf, C., Gray, M. E., Papovich, C., Barden, M., ...

We explore the amount of obscured star-formation as a function of environment in the A901/902 supercluster at z=0.165 in conjunction with a field sample drawn from the A901 and CDFS fields, imaged...

Galaxy Evolution in Dense Environments: Properties of Interacting Galaxies in the A901/02 Supercluster (2008)

Heiderman, A. L., Jogee, S., Bacon, D. J., Balogh, M. L., Barden, M., Barazza, F. D., ...

We present a study of galaxies in the STAGES survey of the Abell 901/902 supercluster at z~0.165, based on HST ACS F606W, COMBO-17, Spitzer 24um, XMM-Newton X-ray, and gravitational lensing maps. We...

Morphological Transformations of Galaxies in the A901/02 Supercluster from STAGES (2008)

Heiderman, A. L., Jogee, S., Bacon, D. J., Balogh, M. L., Barden, M., Barazza, F. D., ...

We present a study of galaxies in the Abell 901/902 Supercluster at z~0.165, based on HST ACS F606W, COMBO-17, Spitzer 24um, XMM-Newton X-ray, and gravitational lensing maps, as part of the STAGES...

Characterizing Barred Galaxies in the Abell 901/902 Supercluster (2008)

Marinova, I., Jogee, S., Bacon, D., Balogh, M., Barden, M., Barazza, F. D., ...

In dense clusters, higher densities at early epochs as well as physical processes, such as ram pressure stripping and tidal interactions become important, and can have direct consequences for the...

Evolution of Galaxies Since Z~3:COMBINING SDSS, GEMS and FIRES (2007)

Trujillo, Ignacio, Förster Schreiber, Natascha M., Rudnick, Gregory, Barden, Marco, Franx, Marijn, Rix, Hans-Walter, ...

We present the evolution of the luminosity size and stellar mass size relations of luminous (LV > 3.4×1010h70 -2Lo) and of massive (M* >3×1010h70 -2Mo) galaxies in the last˜11 Gyr. We use very...

OGLE 2004-BLG-254: a K3 III Galactic Bulge Giant spatially resolved by a single microlens (2006)

Cassan, A., Fouque, P., Brillant, S., Dominik, M., Greenhill, J., ...

We present an analysis of OGLE 2004-BLG-254, a high-magnification and relatively short duration microlensing event in which the source star, a Bulge K3-giant, has been spatially resolved by a...

Discovery of a Cool Planet of 5.5 Earth Masses Through Gravitational Microlensing (2006)

Bennett, D. P., Fouque, P., Williams, A., Dominik, M., Jorgensen, U. G., ...

In the favoured core-accretion model of formation of planetary systems, solid planetesimals accumulate to build up planetary cores, which then accrete nebular gas if they are sufficiently massive....

The size evolution of galaxies since z~3: Combining SDSS, GEMS, and FIRES (2006)

Trujillo, Ignacio, Förster Schreiber, Natascha M., Rudnick, Gregory, Barden, Marco, Franx, Marijn, Rix, Hans-Walter, ...

We present the evolution of the luminosity-size and stellar mass-size relations of luminous (LV>~3.4×1010 h-270 Lsolar) and massive (M*>~3×1010 h-270 Msolar) galaxies in the last ~11 Gyr. We use...

Studying Distant Dwarf Galaxies with GEMS and SDSS (2006)

Barazza, F. D., Jogee, S., Rix, H. W., Barden, M., Bell, E. F., Caldwell, J. A. R., ...

We study the colors, structural properties, and star formation histories of a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant dwarfs drawn...

Potential Direct Single-Star Mass Measurement (2005)

Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...

We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...

GEMS Survey Data and Catalog (2005)

Caldwell, J. A. R., McIntosh, D. H., Rix, H-W., Barden, M., Beckwith, S. V. W., Bell, E. F., ...

We describe the data reduction and object cataloging for the GEMS survey, a large-area (800 arcmin^2) two-band (F606W and F850LP) imaging survey with the Advanced Camera for Surveys on HST, centered...

Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations (2005)

Kubas, D., Cassan, A., Beaulieu, J. P., Coutures, C., Dominik, M., Albrow, M. D., ...

We analyze the photometric data obtained by PLANET and OGLE on the caustic-crossing binary-lens microlensing event OGLE-2002-BLG-069. Thanks to the excellent photometric and spectroscopic coverage of...

OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2005)

Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...

Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...

Probing the atmosphere of the bulge G5III star OGLE-2002-BUL-069 by analysis of microlense H alpha line (2005)

Cassan, A., Beaulieu, J. P., Brillant, S., Coutures, C., Dominik, M., Donatowicz, J., ...

We discuss high-resolution, time-resolved spectra of the caustic exit of the binary microlensing event OGLE 2002-BUL-69 obtained with UVES on the VLT. The source star is a G5III giant in the Galactic...

The size evolution of galaxies since z~3: combining SDSS, GEMS and FIRES (2005)

Trujillo, Ignacio, Schreiber, Natascha M. Forster, Rudnick, Gregory, Barden, Marco, Franx, Marijn, Rix, Hans-Walter, ...

We present the evolution of the luminosity-size and stellar mass-size relations of luminous (L_V>3.4x10^10h_70^-2L_sun) and of massive (M_*>3x10^10h_70^-2M_sun) galaxies in the last ~11 Gyr. We use...

Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations (2005)

Kubas, D., Cassan, A., Beaulieu, J. P., Coutures, C., Dominik, M., Albrow, M. D., ...

We analyze the photometric data obtained by PLANET and OGLE on the caustic-crossing binary-lens microlensing event OGLE-2002-BLG-069. Thanks to the excellent photometric and spectroscopic coverage of...

Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations (2005)

Kubas, D., Cassan, A., Beaulieu, J. P., Coutures, C., Dominik, M., Albrow, M. D., ...

We analyze the photometric data obtained by PLANET and OGLE on the caustic-crossing binary-lens microlensing event OGLE-2002-BLG-069. Thanks to the excellent photometric and spectroscopic coverage of...

Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations (2005)

Kubas, D., Cassan, A., Beaulieu, J. P., Coutures, C., Dominik, M., Albrow, M. D., ...

We analyze the photometric data obtained by PLANET and OGLE on the caustic-crossing binary-lens microlensing event OGLE-2002-BLG-069. Thanks to the excellent photometric and spectroscopic coverage of...

GEMS: Which galaxies dominate the z~0.7 ultraviolet luminosity density? (2005)

Wolf, C., Bell, E. F., McIntosh, D. H., Barden, M., Beckwith, S. V. W., ...

We combine high-resolution images from GEMS with redshifts and spectral energy distributions from COMBO-17 to explore the morphological types of galaxies that dominate the z~0.7 UV luminosity...

Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations (2005)

Kubas, D., Cassan, A., Beaulieu, J. P., Coutures, C., Dominik, M., Albrow, M. D., ...

We analyze the photometric data obtained by PLANET and OGLE on the caustic- crossing binary-lens microlensing event OGLE-2002-BLG-069. Thanks to the excellent photometric and spectroscopic coverage...

Bar Evolution Over the Last Eight Billion Years: A Constant Fraction of Strong Bars in GEMS (2004)

Jogee, S., Barazza, F. D., Shlosman, I., Barden, M., Wolf, C., ...

One third of present-day spirals host optically visible strong bars that drive their dynamical evolution. However, the fundamental question of how bars evolve over cosmological times has yet to be...

GEMS: which galaxies dominate the z~0.7 ultraviolet luminosity density? (2004)

Wolf, C., Bell, E. F., McIntosh, D. H., Barden, M., Beckwith, S. V. W., ...

We combine high-resolution images from GEMS with redshifts and spectral energy distributions from COMBO-17 to explore the morphological types of galaxies that dominate the z~0.7 UV luminosity...

Evolution and Impact of Bars over the Last Eight Billion Years: Early Results from GEMS (2004)

Jogee, S., Barazza, F. D., Davies, J., Heyer, I., Barden, M., ...

Bars drive the dynamical evolution of disk galaxies by redistributing mass and angular momentum, and they are ubiquitous in present-day spirals. Early studies of the Hubble Deep Field reported a...

Mass Segregation in the Globular Cluster Palomar 5 and its Tidal Tails (2004)

Koch, A., Grebel, E. K., Odenkirchen, M., Martinez-Delgado, D., Caldwell, J. A. R.

We present the stellar main sequence luminosity function (LF) of the disrupted, low-mass, low-concentration globular cluster Palomar 5 and its well-defined tidal tails, which emanate from the cluster...

OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)

Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...

Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\tilde r_E \theta_E and...

Evolution of optically faint AGN from COMBO-17 and GEMS (2004)

Wisotzki, L., Jahnke, K., Sanchez, S. F., Wolf, C., Barden, M., Bell, E. F., ...

We have mapped the AGN luminosity function and its evolution between z=1 and z=5 down to apparent magnitudes of $R

Colors of AGN host galaxies at 0.5 (2004)

Sanchez, S. F., Jahnke, K., Wisotzki, L., McIntosh, D. H., Bell, E. F., Barden, M., ...

We present the results from a study of the host galaxies of 15 optically selected AGNs with 0.5

Probing the atmosphere of the bulge G5III star OGLE-2002-BUL-069 by analysis of microlense H alpha line (2004)

Cassan, A., Beaulieu, J. P., Brillant, S., Coutures, C., Dominik, M., Donatowicz, J., ...

We discuss high-resolution, time-resolved spectra of the caustic exit of the binary microlensing event OGLE 2002-BUL-69 obtained with UVES on the VLT. The source star is a G5III giant in the Galactic...

Potential Direct Single-Star Mass Measurement (2004)

Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...

We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...

OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)

Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...

Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...

Probing the atmosphere of the bulge G5III star OGLE-2002-BUL-069 by analysis of microlense H alpha line (2004)

Cassan, A., Beaulieu, J. P., Brillant, S., Coutures, C., Dominik, M., Donatowicz, J., ...

We discuss high-resolution, time-resolved spectra of the caustic exit of the binary microlensing event OGLE 2002-BUL-69 obtained with UVES on the VLT. The source star is a G5III giant in the Galactic...

Potential Direct Single-Star Mass Measurement (2004)

Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...

We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...

OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)

Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...

Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...

Probing the atmosphere of the bulge G5III star OGLE-2002-BUL-069 by analysis of microlense H alpha line (2004)

Cassan, A., Beaulieu, J. P., Brillant, S., Coutures, C., Dominik, M., Donatowicz, J., ...

We discuss high-resolution, time-resolved spectra of the caustic exit of the binary microlensing event OGLE 2002-BUL-69 obtained with UVES on the VLT. The source star is a G5III giant in the Galactic...

A calibration map for Wide Field Imager photometry (2004)

Koch, A., Odenkirchen, M., Grebel, E. K., Caldwell, J. A. R.

We present a prescription to correct large-scale intensity variations affecting imaging data taken with the Wide Field Imager (WFI) at the MPG/ESO 2.2 m telescope at the European Southern Observatory...

Correcting spatial gradients (2004)

Koch, A., Grebel, E. K., Odenkirchen, M., Caldwell, J. A. R.

We present a method to significantly reduce large-scale photometric variations seriously affecting imaging data from the Wide Field Imager (WFI). The primary source for these gradients is non-uniform...

A calibration map for Wide Field Imager photometry (2003)

Koch, A., Odenkirchen, M., Grebel, E. K., Caldwell, J. A. R.

We present a prescription to correct large-scale intensity variations affecting imaging data taken with the Wide Field Imager (WFI) at the MPG/ESO 2.2 m telescope at the European Southern Observatory...

The PLANET microlensing campaign: Implications for planets around galactic disk and bulge stars (2003)

Dominik, M., Albrow, M. D., Caldwell, J. A. R., Cassan, A., Coutures, C., ...

With round-the-clock monitoring of galactic bulge microlensing events, the PLANET experiment constrains the abundance and can yield the discovery of planets down to the mass of earth around galactic...

The luminosity function of Palomar 5 and its tidal tails (2003)

Koch, A., Odenkirchen, M., Grebel, E. K., Martinez-Delgado, D., Caldwell, J. A. R.

We present the main sequence luminosity function of the tidally disrupted globular cluster Palomar 5 and its tidal tails. For this work we analyzed imaging data obtained with the Wide Field Camera at...

High-Precicison Limb-Darkening Measurement of a K3 Giant Using Microlensing (2003)

Fields, Dale L., Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., ...

We obtain high-precision limb-darkening measurements in five bands (V, V_E, I_E, I, and H) for the K3 III (Teff=4200 K, [Fe/H]=+0.3, log(g)=2.3) source of the Galactic bulge microlensing event EROS...

Bar-driven galaxy evolution at intermediate redshifts (2003)

Jogee, S., Lubell, G., Davies, J., Peng, C. Y., Somerville, R. S., ...

Non-axisymmetric features such as bars drive the dynamical and secular evolution of disk galaxies by exerting gravitational torques which redistribute mass and angular momentum. While most ( gt; 70...

A wide-field survey for lensed quasars in the southern hemisphere (2003)

Morgan, N. D., Caldwell, J. A. R., Rix, H. W., Schechter, P. L.

We describe a wide-field survey for gravitationally lensed quasars conducted with the ESO/MPG 2.2m telescope at La Silla. The imaging portion of the survey is now complete; we have obtained direct...

PLANET II: A Microlensing and Transit Search for Extrasolar Planets (2002)

Sackett, Penny D., Albrow, M. D., Caldwell, J. A. R., Coutures, C., Dominik, M., ...

Due to their extremely small luminosity compared to the stars they orbit, planets outside our own Solar System are extraordinarily difficult to detect directly in optical light. Careful photometric...

A Short, Non-Planetary, Microlensing Anomaly: Observations and Lightcurve Analysis of MACHO 99-BLG-47 (2002)

Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...

We analyze PLANET and MACHO observations of MACHO 99-BLG-47, the first nearly-normal microlensing event for which high signal-to-noise-ratio data reveal a well-covered, short-duration anomaly. This...

First microlens mass measurement: PLANET photometry of EROS BLG-2000-5 (2001)

An, Jin H., Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...

We analyze PLANET photometric observations of the caustic-crossing binary-lens microlensing event, EROS BLG-2000-5, and find that modeling the observed light curve requires incorporation of the...

Microlensing Constraints on the Frequency of Jupiter-Mass Companions: Analysis of Five Years of PLANET Photometry (2001)

Gaudi, B. S., Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., ...

We analyze five years of PLANET photometry of microlensing events toward the Galactic bulge to search for the short-duration deviations from single lens light curves that are indicative of the...

H-alpha Equivalent Width Variations across the Face of a Microlensed K Giant in the Galactic Bulge (2000)

Albrow, M., An, J., Caldwell, J. A. R., Dominik, M., Greenhill, J., ...

We present VLT FORS1 spectroscopy that temporally resolves the second caustic crossing of the Bulge K giant source of microlensing event EROS 2000-BLG-5, the first time this has been accomplished for...

Limits on the Abundance of Galactic Planets From Five Years of Planet Observations (2000)

Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...

We search for signatures of planets in 43 intensively monitored microlensing events that were observed between 1995 and 1999. Planets would be expected to cause a short duration (~1 day) deviation on...

Microlensing Constraints on the Frequency of Jupiter Mass Planets (2000)

Gaudi, B. Scott, Albrow, M. D., An, Jin H., Caldwell, J. A. R., Depoy, D. L., ...

Microlensing is the only technique likely, within the next 5 years, to constrain the frequency of Jupiter-analogs. The PLANET collaboration has monitored nearly 100 microlensing events of which more...

PLANET observations of microlensing event OGLE-1999-BUL-23: limb darkening measurement of the source star (2000)

Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...

We present PLANET observations of OGLE-1999-BUL-23, a binary-lens microlensing event towards the Galactic bulge. PLANET observations in the I and V bands cover the event from just before the first...

The PLANET microlensing follow-up network: Results and prospects for the detection of extra-solar planets (1999)

Dominik, M., Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Gaudi, B. S., ...

Among various techniques to search for extra-solar planets, microlensing has some unique characteristics. Contrary to all other methods which favour nearby objects, microlensing is sensitive to...

Detection of Rotation in a Binary Microlens: PLANET Photometry of MACHO 97-BLG-41 (1999)

Albrow, M. D., Caldwell, J. A. R., Dominik, M., Gaudi, B. S., Gould, A., ...

We analyze PLANET collaboration data for MACHO 97-BLG-41, the only microlensing event observed to date in which the source transits two disjoint caustics. The PLANET data, consisting of 46 V-band and...