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dc.contributor.authorTremblay, Grant R.
dc.contributor.authorChiaberge, Marco
dc.contributor.authorSparks, William B.
dc.contributor.authorBaum, Stefi Alison
dc.contributor.authorAllen, Mark G.
dc.contributor.authorAxon, David J.
dc.contributor.authorCapetti, Alessandro
dc.contributor.authorFloyd, David J.E.
dc.contributor.authorPerlman, Eric S.
dc.date.accessioned2017-10-15T23:15:25Z
dc.date.available2017-10-15T23:15:25Z
dc.date.issued2009-08-01
dc.identifier.citationTremblay, G. R., Chiaberge, M., Sparks, W. B., Baum, S. A., Allen, M. G., Axon, D. J., . . . Quillen, A. C. (2009). HST/ACS emission line imaging of low-redshift 3CR radio galaxies. I. the data. Astrophysical Journal, Supplement Series, 183(2), 278-294en_US
dc.identifier.urihttp://hdl.handle.net/11141/1951
dc.descriptionGalaxies:active Quasars:emission lines Radio continuum:galaxiesen_US
dc.description.abstractWe present 19 nearby (z < 0.3) 3CR radio galaxies imaged at low and high excitation as part of a Cycle 15 Hubble Space Telescope (HST) snapshot survey with the Advanced Camera for Surveys (ACS). These images consist of exposures of the Hα (6563 Å, plus [N ii] contamination) and [O iii]λ5007 emission lines using narrowband linear ramp filters adjusted according to the redshift of the target. To facilitate continuum subtraction, a single-pointing 60 s line-free exposure was taken with a mediumband filter appropriate for the target's redshift. We discuss the steps taken to reduce these images independently of the automated recalibration pipeline so as to use more recent ACS flat-field data as well as to better reject cosmic rays. We describe the method used to produce continuum-free (pure line-emission) images, and present these images along with qualitative descriptions of the narrow-line region morphologies we observe. We present Hα+[N ii] and [O iii] line fluxes from aperture photometry, finding the values to fall expectedly on the redshift-luminosity trend from a past HST/WFPC2 emission line study of a larger, generally higher redshift subset of the 3CR. We also find expected trends between emission line luminosity and total radio power, as well as a positive correlation between the size of the emission line region and redshift. We discuss the associated interpretation of these results, and conclude with a summary of future work enabled by this data set. © 2009. The American Astronomical Society. All rights reserved.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publishers policy. It may be subject to U.S. copyright law. © 2009. The American Astronomical Society. All rights reserved.en_US
dc.rights.urihttps://aas.org/publications/aas-copyright-policyen_US
dc.titleHST/ACS emission line imaging of low-redshift 3CR radio galaxies. I. The dataen_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0067-0049/183/2/278


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