Donald W. Mccarthy

The Reddening Towards Cassiopeia A's Supernova: Constraining the 56Ni Yield (2009)

Eriksen, Kristoffer A., Arnett, David, McCarthy, Donald W., Young, Patrick

We present new reddening measurements towards the young supernova remnant Cassiopeia A, using two techniques not previously applied to this object. Our observations of the near-infrared [Fe II] 1.257...

Imaging Circumstellar Environments with a Nulling Interferometer (2007)

Philip M. Hinz, William F. Hoffmann, J. Roger, P. Angel, ...

on, allowing direct detection of warm, Jupiter-size planets and faint zodiacal dust around other nearby stars 5 . With a conventional telescope, the very high contrast ratio needed to resolve a...

Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle (2006)

Guyon, Olivier, Angel, James R. P., Bowers, Charles, Burge, James, Burrows, Adam, Codona, Johanan, ...

The Telescope to Observe Planetary Systems (TOPS) is a proposed space mission to image in the visible (0.4-0.9 micron) planetary systems of nearby stars simultaneously in 16 spectral bands...

Halpha-Derived Star-Formation Rates For Three z ~ 0.75 EDisCS Galaxy Clusters (2005)

Finn, Rose A., Zaritsky, Dennis, McCarthy Jr., Donald W., Poggianti, Bianca, Rudnick, Gregory, Halliday, Claire, ...

We present Halpha-derived star-formation rates (SFRs) for three z ~ 0.75 galaxy clusters. Our 1 sigma flux limit corresponds to a star-formation rate of 0.10-0.24 solar mass per year, and our minimum...

Hα-derived star formation rates for three z~=0.75 EDisCS galaxy clusters (2005)

Finn, Rose A., Zaritsky, Dennis, McCarthy, Donald W., Poggianti, Bianca, Rudnick, Gregory, Halliday, Claire, ...

Suppressing speckle noise for simultaneous differential extrasolar planet imaging (SDI) at the VLT and MMT (2004)

Biller, Beth A., Close, Laird, Lenzen, Rainer, Brandner, Wolfgang, McCarthy, Donald W., Nielsen, Eric, ...

H$\alpha$-Derived Star-Formation Rates for the z=0.84 Galaxy Cluster CLJ0023+0423B (2003)

Finn, Rose A., Zaritsky, Dennis, McCarthy, Donald W.

We present H$\alpha$-derived star-formation rates (SFRs) for the galaxy cluster CL J0023+0423B at $z = 0.845$. Our $3\sigma$ flux limits corresponds to a star-formation rate of 0.24 \smy, and our...

High Resolution Images of Orbital Motion in the Trapezium Cluster: First Scientific Results from the MMT Deformable Secondary Mirror Adaptive Optics System (2003)

Close, Laird M., Wildi, Francois, Lloyd-Hart, Michael, Brusa, Guido, Fisher, Don, Miller, Doug, ...

We present the first scientific images obtained with a deformable secondary mirror adaptive optics system. We utilized the 6.5m MMT AO system to produce high-resolution (FWHM=0.07'') near infrared...

Very Red and Extremely Red Galaxies in the Fields of z ~ 1.5 Radio-Loud Quasars (2001)

Hall, Patrick B., Sawicki, Marcin, Martini, Paul, Finn, Rose A., Pritchet, C. J., Osmer, Patrick S., ...

We previously identified an excess of mostly red galaxies around 31 RLQs at z=1-2. These fields have an ERO (extremely red object, R-K>6) density 2.7 times higher than the field. Assuming the EROs...