Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Stecher, Theodore P."'
Using photometry from the Ultraviolet Imaging Telescope (UIT) and photometry and spectroscopy from three ground-based optical datasets we have analyzed the stellar content of OB associations and field areas in and around the regions N 79, N 81, N 83,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012142
Autor:
Waller, William H., Fanelli, Michael N., Keel, William C., Bohlin, Ralph, Collins, Nicholas R., Madore, Barry F., Marcum, Pamela M., Neff, Susan G., O'Connell, Robert W., Offenberg, Joel D., Roberts, Morton S., Smith, Andrew M., Stecher, Theodore P.
M94 (NGC 4736) is investigated using images from the Ultraviolet Imaging Telescope (FUV-band), Hubble Space Telescope (NUV-band), Kitt Peak 0.9-m telescope (H-alpha, R, and I bands), and Palomar 5-m telescope (B-band), along with spectra from the Int
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011101
Autor:
Smith, Andrew M., Collins, Nicholas R., Waller, William H., Roberts, Morton S., Smith, Denise A., Bohlin, Ralph C., Cheng, K. P., Fanelli, Michael N., Neff, Susan G., O'Connell, Robert W., Parise, Ronald A., Smith, Eric P., Stecher, Theodore P.
Far ultraviolet FUV imagery of the edge-on, Sc/SBd galaxy, NGC 4631 reveals very strong FUV emission, resulting from active star formation, uniformly distributed along the galactic mid- plane. Multi-band imagery, HI and HII position-velocity curves a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0009138
Autor:
Smith, Denise A., Allen, Ronald J., Bohlin, Ralph C., Nicholson, Natalya, Stecher, Theodore P.
Recent studies of nearby spiral galaxies suggest that photodissociation regions (PDRs) are capable of producing much of the observed HI in galaxy disks. In that case, measurements of the HI column density and the far-ultraviolet (FUV) photon flux pro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0003394
Autor:
Danforth, Charles W., Cornett, Robert H., Levenson, N. A., Blair, William P., Stecher, Theodore P.
Publikováno v:
Astron.J. 119 (2000) 2319D
During the Astro-1 and Astro-2 Space Shuttle missions in 1990 and 1995, far ultraviolet (FUV) images of five 40' diameter fields around the rim of the Cygnus Loop supernova remnant were observed with the Ultraviolet Imaging Telescope (UIT). These fie
Externí odkaz:
http://arxiv.org/abs/astro-ph/0002005
Autor:
D'Cruz, Noella L., O'Connell, Robert W., Rood, Robert T., Whitney, Jonathan H., Dorman, Ben, Landsman, Wayne B., Hill, Robert S., Stecher, Theodore P., Bohlin, Ralph C.
The globular cluster omega Centauri contains the largest known population of very hot horizontal branch (HB) stars. We have used the Hubble Space Telescope to obtain a far-UV/optical color-magnitude diagram of three fields in omega Cen. We find that
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909371
Imaging in the restframe ultraviolet has proven to be an effective and vital means of tracing dynamical patterns of star formation in galaxies out to high redshifts. Using images from the Ultraviolet Imaging Telescope (UIT), Hubble Space Telescope (H
Externí odkaz:
http://arxiv.org/abs/astro-ph/9812188
Autor:
Hill, Robert S., Fanelli, Michael N., Smith, Denise A., Bohlin, Ralph C., Neff, Susan G., O'Connell, Robert W., Roberts, Morton S., Smith, Andrew M., Stecher, Theodore P.
The bright Magellanic irregular galaxy NGC 4449 was observed during the Astro-2 Space Shuttle mission by the Ultraviolet Imaging Telescope (UIT), which obtained images of a ~40 arcmin field centered on the galaxy in two broad far-ultraviolet (FUV) ba
Externí odkaz:
http://arxiv.org/abs/astro-ph/9808039
Autor:
Cornett, Robert H., Dorman, Ben, Smith, Eric P., Fanelli, Michael A., Oegerle, William R., Bohlin, Ralph C., Neff, Susan G., O'Connell, Robert W., Roberts, Morton S., Smith, Andrew M., Stecher, Theodore P.
We present deep ultraviolet observations of a field containing the cluster Abell 2246 (z=0.225) which provide far-ultraviolet (FUV) images of some of the faintest galaxies yet observed in that bandpass. Abell 2246 lies within the field of view of Ult
Externí odkaz:
http://arxiv.org/abs/astro-ph/9805111
Autor:
Stecher, Theodore P., Cornett, Robert H., Greason, Michael R., Landsman, Wayne B., Hill, Jesse K., Hill, Robert S., Bohlin, Ralph C., Chen, Peter C., Collins, Nicholas R., Fanelli, Michael N., Hollis, Joan I., Neff, Susan G., O'Connell, Robert W., Offenberg, Joel D., Parise, Ronald A., Parker, Joel Wm., Roberts, Morton S., Smith, Andrew M., Waller, William H.
Publikováno v:
Publ.Astron.Soc.Pac. 109 (1997) 584
The Ultraviolet Imaging Telescope (UIT) was flown as part of the Astro observatory on the Space Shuttle Columbia in December 1990 and again on the Space Shuttle Endeavor in March 1995. Ultraviolet (1200-3300 Angstroms) images of a variety of astronom
Externí odkaz:
http://arxiv.org/abs/astro-ph/9704297