Calibration Status and Results for Wide Field Camera 3 (2009)
A. M. Koekemoer, P. Goudfrooij, L. L. Dressel, Randy A. Kimble
Abstract. Wide Field Camera 3 (WFC3) is a general-purpose imager in development for installation in HST Servicing Mission 4 (SM4). Covering the wavelength range of 200-1700 nm in two observing...
Deep Optical Photometry of Six Fields in the Andromeda Galaxy (2009)
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Guhathakurta, Puragra, Kalirai, Jason S., Kimble, Randy A., ...
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching well below the oldest main sequence turnoff in six fields of the Andromeda Galaxy....
The ^{55}Fe X-ray Energy Response of Mercury Cadmium Telluride Near-Infrared Detector Arrays (2009)
Fox, Ori D., Waczynski, Augustyn, Wen, Yiting, Foltz, Roger D., Hill, Robert J., Kimble, Randy A., ...
A technique involving ^{55}Fe X-rays provides a straightforward method to measure the response of a detector. The detector's response can lead directly to a calculation of the conversion gain (e^-...
Photometric Calibrations for 21st Century Science (2009)
Kent, Stephen, Kaiser, Mary Elizabeth, Deustua, Susana E., Smith, J. Allyn, Adelman, Saul, Allam, Sahar, ...
The answers to fundamental science questions in astrophysics, ranging from the history of the expansion of the universe to the sizes of nearby stars, hinge on our ability to make precise measurements...
The Dearth of UV-Bright Stars in M32: Implications for Stellar Evolution Theory (2008)
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Sweigart, Allen V., Kimble, Randy A., Bowers, Charles W.
Using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, we have obtained deep far-ultraviolet images of the compact elliptical galaxy M32. When combined with earlier...
Goudfrooij, Paul, Bohlin, Ralph C., Maiz-Apellaniz, Jesus, Kimble, Randy A.
A variety of on-orbit imaging and spectroscopic observations are used to characterize the Charge Transfer Efficiency (CTE) of the Charge-Coupled Device (CCD) of the Space Telescope Imaging...
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Rich, R. Michael, Guhathakurta, Puragra, Renzini, Alvio, ...
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching stars well below the oldest main sequence turnoff in the spheroid, tidal stream, and...
Brown, Thomas M., Smith, Ed, Guhathakurta, Puragra, Rich, R. Michael, Ferguson, Henry C., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) for a field in the giant tidal stream of the Andromeda galaxy (M31). These observations, taken with the Advanced Camera for Surveys on the Hubble Space...
Stellar Cluster Fiducial Sequences with the Advanced Camera for Surveys (2005)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Guhathakurta, Puragra, Kimble, Randy A., Sweigart, Allen V., ...
We present color-magnitude diagrams of five Galactic globular clusters and one Galactic open cluster spanning a wide range of metallicity (-2.1 < [Fe/H] < +0.3), as observed in the F606W (broad V)...
The Herbig Ae star HD 163296 in X-rays (2005)
Swartz, Douglas A., Drake, Jeremy J., Elsner, Ronald F., Ghosh, Kajal K., Grady, Carol A., Wassell, Edward, ...
Chandra X-ray imaging spectroscopy of the nearby Herbig Ae star HD 163296 at 100 AU angular resolution is reported. A point-like, soft (kT~0.5 keV), emission-line source is detected at the location...
Age Constraints for an M31 Globular Cluster from Main Sequence Photometry (2004)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) of the globular cluster SKHB-312 in the Andromeda galaxy (M31), obtained with the Advanced Camera for Surveys on the Hubble Space Telescope. The cluster was...
RR Lyrae Stars in the Andromeda Halo from Deep Imaging with the Advanced Camera for Surveys (2004)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a complete census of RR Lyrae stars in a halo field of the Andromeda galaxy. These deep observations, taken as part of a program to measure the star formation history in the halo, spanned...
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) for a minor-axis field in the halo of the Andromeda galaxy (M31), 51 arcmin (11 kpc) from the nucleus. These observations, taken with the Advanced Camera...
Far-Ultraviolet Emission from Elliptical Galaxies at z=0.33 (2003)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Bowers, Charles W., Kimble, Randy A., Renzini, Alvio, ...
We present far-ultraviolet (far-UV) images of the rich galaxy cluster ZwCl1358.1+6245, taken with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope (HST). When combined...
Using M32 to Study Rapid Phases of Stellar Evolution (2002)
Brown, Thomas M., Ferguson, Henry C., Sweigart, Allen V., Kimble, Randy A., Bowers, Charles W.
The compact elliptical galaxy M32 offers a unique testing ground for theories of stellar evolution. Because of its proximity, solar-blind UV observations can resolve the hot evolved stars in its...
Redshift estimation from low-resolution prism SEDs with an NGST MOS (2000)
Teplitz, Harry I., Malumuth, Eliot, Woodgate, Bruce E., Moseley, S. Harvey, Gardner, Jonathan P., Kimble, Randy A., ...
We discuss the utility of a low resolution prism as a component of a Multi-Object Spectrometer for NASA's proposed Next Generation Space Telescope (NGST). Low resolution prism spectroscopy permits...
Brown, Thomas M., Kimble, Randy A., Ferguson, Henry C., Gardner, Jonathan P., Collins, Nicholas R., Hill, Robert S.
Far-UV observations in and near the Hubble Deep Fields demonstrate that the Space Telescope Imaging Spectrograph (STIS) can potentially obtain unique and precise measurements of the diffuse...
Far-UV Emission from Elliptical Galaxies at z=0.55 (1999)
Brown, Thomas M., Bowers, Charles W., Kimble, Randy A., Ferguson, Henry C.
The restframe UV-to-optical flux ratio, characterizing the ``UV upturn'' phenomenon, is potentially the most sensitive tracer of age in elliptical galaxies; models predict that it may change by...
Detection and Photometry of Hot Horizontal Branch Stars in the Core of M32 (1999)
Brown, Thomas M., Bowers, Charles W., Kimble, Randy A., Sweigart, Allen V., Ferguson, Henry C.
We present the deepest near-UV image of M32 to date, which for the first time resolves hot HB stars in an elliptical galaxy. Given the near-solar metallicity of M32, much larger than that of globular...
Imaging and spectroscopy of arcs around the most luminous X-ray cluster RX J1347.5-1145 (1997)
Sahu, Kailash C., Shaw, Richard A., Kaiser, Mary Elizabeth, Baum, Stefi A., Ferguson, Henry C., Hayes, Jeffrey J. E., ...
The cluster RX J1347.5-1145, the most luminous cluster in the X-ray wavelengths, was imaged with the newly installed Space Telescope Imaging Spectrograph (STIS) on-board HST. Its relatively high...