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  • Author > Windhorst, Rogier A. [x]

  • Sort results by: NASA Center | Date Added to NTRS | Publication Year
    There are a total of 11 record(s) matching your query.
    Sorted by: Date Added To NTRS in Descending order

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    Emission-Line Galaxies from the PEARS Hubble Ultra Deep Field: A 2-D Detection Method and First Results

    Author(s): Gardner, J. P.; Straughn, Amber N.; Meurer, Gerhardt R.; Pirzkal, Norbert; Cohen, Seth H.; Malhotra, Sangeeta; Rhoads, james; Windhorst, Rogier A.; Gardner, Jonathan P.; Hathi, Nimish P.; Xu, Chun; Gronwall, Caryl; ...
    Abstract: The Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) grism PEARS (Probing Evolution And Reionization Spectroscopically) survey provides a large dataset of low-resolution spectra from thousands of galaxies in ...
    NASA Center: Goddard Space Flight Center
    Publication Year: 2007
    Added to NTRS: 2008-11-10
    Document ID: 20080040165

    New IUE spectra for two nearby radio stations and reprocessing of archival data for four more

    Author(s): Keel, William C.; Windhorst, Rogier A.
    Abstract: We obtained new IUE spectra for two nearby radio galaxies and reprocessed archival data for four more. In order to study the effects of spectral evolution in high redshift radio galaxies, we must compare these objects to the ...
    NASA Center: NASA (non Center Specific)
    Publication Year: 1990
    Added to NTRS: 2005-08-25
    Accession Number: 94N70458; Document ID: 19940003703; Report Number: NAS 1.26:193737, NASA-CR-193737

    A ROSAT deep survey of the best studied high latitude areas

    Author(s): Windhorst, Rogier A.
    Abstract: A brief description of the primary objectives and scope of the project are presented. Also, a description of the findings to date is given.
    NASA Center: NASA (non Center Specific)
    Publication Year: 1994
    Added to NTRS: 2005-08-25
    Accession Number: 95N13722; Document ID: 19950007309; Report Number: NAS 1.26:196265, NASA-CR-196265

    Galaxy pairs in deep HST images: Evidence for evolution in the galaxy merger rate

    Author(s): Burkey, Jordan M.; Keel, William C.; Windhorst, Rogier A.; Franklin, Barbara E.
    Abstract: We use four deep serendipitous fields observed with the Hubble Space Telescope (HST) Wide-Field Camera to constrain the rate of galaxy merging between the current epoch and z approximately equals 0.7. Since most mergers ...
    NASA Center: Goddard Space Flight Center
    Publication Year: 1994
    Added to NTRS: 2004-11-03
    Accession Number: 95A61282; Document ID: 19950029683

    The discovery of a young radio galaxy at z = 2.390 - Probing initial star formation at z less than approximately 3.0

    Author(s): Windhorst, Rogier A.; Burstein, David; Mathis, Doug F.; Neuschaefer, Lyman W.; Bertola, F.; Buson, L. M.; Koo, David C.; Matthews, Keith; Barthel, Peter D.; Chambers, K. C.
    Abstract: The discovery of a weak radio galaxy from the Leiden Berkeley Deep Survey at a redshift of 2.390 is presented, as well as nine-band photometry for the galaxy and for surrounding objects. The source 53W002 is not variable on ...
    NASA Center: NASA (non Center Specific)
    Publication Year: 1991
    Added to NTRS: 2004-11-03
    Accession Number: 91A56859; Document ID: 19910072236

    The ultraviolet spectra of nearby radio galaxies

    Author(s): Keel, William C.; Windhorst, Rogier A.
    Abstract: New and archival IUE SWP spectra are reported for nine nearby radio galaxies (V is less than 15 mag), together with optical emissionlike data for these galaxies as well as a number of candidates with weaker line emission. ...
    NASA Center: NASA (non Center Specific)
    Publication Year: 1991
    Added to NTRS: 2004-11-03
    Accession Number: 92A16488; Document ID: 19920033864

    The Theta-z relation for HST bulges and disks out to z approximately equal 0.8

    Author(s): Mutz, Steven B.; Windhorst, Rogier A.; Schmidtke, Paul C.; Pascarelle, Sebastian M.; Griffiths, Richard E.; Ratnatunga, Kavan U.; Casertano, Stefano; Im, Myungshin; Ellis, Richard S.; Glazebrook, Karl
    Abstract: We present Hubble Space Telescope (HST) scale lengths and ground-based redshifts for 63 faint field galaxies down to I less than or approximately 21.5 mag from the Medium-Deep Survey. These have measured redshifts z less ...
    NASA Center: Goddard Space Flight Center
    Publication Year: 1994
    Added to NTRS: 2004-11-03
    Accession Number: 95A72435; Document ID: 19950040836

    Deep Hubble Space Telescope imaging of 53W044 - An S0 radio galaxy at z = 0.311

    Author(s): Keel, William C.; Windhorst, Rogier A.
    Abstract: Images of the Wide Field Camera (WFC) and Faint-Object Camera (FOC) of the radio galaxy 53W044 are presented. The WFC images are used to examine the structure of the galaxy, and show evidence for a significant disk, on the ...
    NASA Center: Goddard Space Flight Center
    Publication Year: 1993
    Added to NTRS: 2004-11-03
    Accession Number: 93A50904; Document ID: 19930066907

    Removing cosmic-ray hits from multiorbit HST Wide Field Camera images

    Author(s): Windhorst, Rogier A.; Franklin, Barbara E.; Neuschaefer, Lyman W.
    Abstract: We present an optimized algorithm that removes cosmic rays ('CRs') from multiorbit Hubble Space Telescope (HST) Wide Field/Planetary Camera ('WF/PC') images. It computes the image noise in every iteration from the WF/PC CCD ...
    NASA Center: Goddard Space Flight Center
    Publication Year: 1994
    Added to NTRS: 2004-11-03
    Accession Number: 95A83953; Document ID: 19950052354

    Microjansky source counts and spectral indices at 8.44 GHz

    Author(s): Windhorst, Rogier A.; Fomalont, Edward B.; Partridge, R. B.; Lowenthal, James D.
    Abstract: Deep images were made with 10 arcsec resolution at 8.44 GHz with microjansky sensitivity of two regions previously imaged at several lower frequencies. The differential microjansky source count fits a power-law distribution ...
    NASA Center: NASA (non Center Specific)
    Publication Year: 1993
    Added to NTRS: 2004-11-03
    Accession Number: 93A30711; Document ID: 19930046714

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