Meghan E. Gray

The environmental dependence of the stellar mass-size relation in STAGES galaxies (2009)

Maltby, David T., Aragón-Salamanca, Alfonso, Gray, Meghan E., Barden, Marco, Haeussler, Boris, Wolf, Christian, ...

We present the stellar mass-size relations for elliptical, lenticular, and spiral galaxies in the field and cluster environments using HST/ACS imaging and data from the Space Telescope A901/2 Galaxy...

Less than 10 percent of star formation in z=0.6 massive galaxies is triggered by major interactions (2009)

Robaina, Aday R., Bell, Eric F., Skelton, Rosalind E., McIntosh, Daniel H., Somerville, Rachel S., Zheng, Xianzhong, ...

Both observations and simulations show that major tidal interactions or mergers between gas-rich galaxies can lead to intense bursts of starformation. Yet, the average enhancement in star formation...

Optically-passive spirals: The missing link in gradual star formation suppression upon cluster infall (2009)

Wolf, Christian, Aragón-Salamanca, Alfonso, Balogh, Michael, Barden, Marco, Bell, Eric F., Gray, Meghan E., ...

Galaxies migrate from the blue cloud to the red sequence when their star formation is quenched. Here, we report on galaxies quenched by environmental effects and not by mergers or strong AGN as often...

The STAGES view of red spirals and dusty red galaxies: Mass-dependent quenching of star-formation in cluster infall (2008)

Wolf, Christian, Aragon-Salamanca, Alfonso, Balogh, Michael, Barden, Marco, Bell, Eric F., Gray, Meghan E., ...

We investigate the properties of optically passive spirals and dusty red galaxies in the A901/2 cluster complex at redshift ~0.17 using restframe near-UV-optical SEDs, 24 micron IR data and HST...

The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey (2008)

Heymans, Catherine, Gray, Meghan E., Peng, Chien Y., Van Waerbeke, Ludovic, Bell, Eric F., Wolf, Christian, ...

We present a high resolution dark matter reconstruction of the z=0.165 Abell 901/902 supercluster from a weak lensing analysis of the HST STAGES survey. We detect the four main structures of the...

The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey (2008)

Heymans, Catherine, Gray, Meghan E., Peng, Chien Y., Van Waerbeke, Ludovic, Bell, Eric F., Wolf, Christian, ...

We present a high-resolution dark matter reconstruction of the z = 0.165 Abell 901/902 supercluster from a weak lensing analysis of the Hubble Space Telescope STAGES survey. We detect the four main...

GHRS Monitoring of the Outflowing Material in NGC 4151 (2007)

Ray Weymann, Simon L. Morris, Meghan E. Gray, John B. Hutchings

. We present the results of a GHRS program to monitor the absorption lines in the spectrum of the Seyfert 1 galaxy NGC 4151 caused by outflowing gas from the nucleus. Although we see subtle changes...

Infrared constraints on the dark mass concentration observed in the cluster Abell 1942 (2001)

Gray, Meghan E., Ellis, Richard S., Lewis, James R., McMahon, Richard G., Firth, Andrew E.

We present a deep H-band image of the region in the vicinity of the cluster Abell 1942 containing the puzzling dark matter concentration detected in an optical weak lensing study by Erben et al....

Infrared observations of gravitational lensing in Abell 2219 with CIRSI (2000)

Gray, Meghan E., Ellis, Richard S., Refregier, Alexandre, Bezecourt, Jocelyn, McMahon, Richard G., Beckett, Martin G., ...

We present the first detection of a gravitational depletion signal at near-infrared wavelengths, based on deep panoramic images of the cluster Abell 2219 (z=0.22) taken with the Cambridge Infrared...

GHRS Monitoring of the Outflowing Material in NGC 4151 (1996)

Weymann, Ray J., Morris, Simon L., Gray, Meghan E., Hutchings, John B.

We present the results of a GHRS program to monitor the absorption lines in the spectrum of the Seyfert 1 galaxy NGC 4151 caused by outflowing gas from the nucleus. Although we see subtle changes...