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Papers by Carol Christian

This paper discusses various information technology methods being applied to science education an... more This paper discusses various information technology methods being applied to science education and public information. Of interest to the Office of Public Outreach at STScI and our collaborators is to investigate the various techniques through which science data can be mediated to the non-specialist client/user. In addition, attention is drawn to interactive and/or multimedia tools being used in astrophysics that may be useful, with modification, for educational purposes. In some cases, straightforward design decisions early on can improve the wide applicability of the interactive tool.

American Astronomical Society Meeting Abstracts, Dec 1, 2007

Hubble Space Telescope has obtained numerous images of the Carina Nebula with ACS/WFC using the F... more Hubble Space Telescope has obtained numerous images of the Carina Nebula with ACS/WFC using the F658N filter (Halpha+[N II]), revealing exquisite detail in this active star-forming region rich in finely detailed structure. Forty-eight overlapping fields were composited into a nearly contiguous mosaic of WFC pointings, resulting in a monochrome image of roughly 500 megapixels spanning ˜24&amp;amp;amp;#39;×12&amp;amp;amp;#39;. In addition, overlapping, wider-field

American Astronomical Society Meeting Abstracts #233, 2019

American Astronomical Society Meeting Abstracts, Dec 1, 2005

AAS, 2011

3-dimensional (3-D) visualizations are a means of adding depth to otherwise 2-dimensional images.... more 3-dimensional (3-D) visualizations are a means of adding depth to otherwise 2-dimensional images. For astronomical images, depth is frequently not measured, but relative depth relationships can be inferred. We present a 3-D visualization of a portion of the Carina Nebula imaged with the Hubble Space Telescope. The source image is a color composite of two datasets obtained with the Advanced

AAS, May 1, 1999

The Hubble Heritage Project has the aim of providing the public with pictorially striking images ... more The Hubble Heritage Project has the aim of providing the public with pictorially striking images of celestial objects obtained with the Hubble Space Telescope. As part of the Heritage Project, we have used HST to obtain a multi-color image of the peculiar galaxy NGC 4650A. This was the first Heritage observation for which the public joined in the target selection. NGC 4650A was chosen in the winter of 1998-99 from among several candidate objects by over 8,000 members of the public, who used the Heritage web site (heritage.stsci.edu) to register their votes. The WFPC2 observations were obtained in April 1999, in the wide B (F450W), wide V (F606W), and I (F814W) bands. The resulting full-color image will be presented at the AAS meeting and on our web site, and the actual data frames are available publicly in the HST archive for use by interested scientists. NGC 4650A, located at a distance of about 40 Mpc, is the best-known and most spectacular example of the rare class of ``polar-ring'' galaxies. These objects are probably the remnants of collisions, in which the debris from a disrupted, gas-rich smaller galaxy has gone into orbit around a larger galaxy. The HST image of NGC 4650A shows a rotating, almost edge-on inner disk of old red stars, around which orbits a younger ring of dust, gas, and stars, in a plane that is nearly perpendicular to that of the old disk. Numerous young blue star clusters reveal that active star formation is occurring within the polar ring, triggered by the collision process. Polar rings are particularly useful for probing the distribution of dark matter in galactic halos.

Cambridge University Press eBooks, Mar 11, 2010

ASPC, Dec 1, 2005

We have created the first K-12 education activity using data provided by the National Virtual Obs... more We have created the first K-12 education activity using data provided by the National Virtual Observatory (NVO). The activity, ``Adopt an Object,'' was suggested by Heidi Kaiter, a middle school science teacher from Concord, MA. It is designed for middle school students, but could be adapted for high school and Astro 101 students as well. Each group of students selects

Astrobiology Science Conference 2010: Evolution and Life: Surviving Catastrophes and Extremes on Earth and Beyond, Apr 1, 2010

Choice Reviews Online, 2011

American Astronomical Society Meeting Abstracts #182, May 1, 1993

Most of the observations for the Extreme Ultraviolet Explorer mission all-sky survey were obtaine... more Most of the observations for the Extreme Ultraviolet Explorer mission all-sky survey were obtained between August 1992 and January 1993. Subsequently, gaps in the survey observations, produced when short pointings to calibration objects were taken, will be filled by June 1993. At that time, the sky survey will be more than 95% complete. The data, accumulated in four bands between

AAS, Dec 1, 1994

NASA's highly successful Extreme Ultraviolet Explorer (EUVE) mission is nearing completio... more NASA's highly successful Extreme Ultraviolet Explorer (EUVE) mission is nearing completion of its second cycle of guest observer (GO) observations. This orbiting observatory has opened a new window on the universe by being the first to examine the entire extreme ultraviolet (EUV) portion of the spectrum (60--760 Angstroms), doing so both photometrically and spectroscopically. The Center for EUV Astrophysics (CEA)