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(75) S. Mathur et al. (16 Authors), ``Thomson Thick X-ray Absorption in a Broad Absorption Line Quasar PG0946+301,'' Astrophys. Jour. Lett., 533, L79-82, 2000.
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(77) F. W. Hamann, H. Netzer, & J. C. Shields, ``The Nature of Associated Absorption and the UV-X-ray Connection in 3C288.1,'' Astrophys. Jour., 536, 101-111, 2000.
(78) A. J. Barth & J. C. Shields, ``LINER/HII `Transition' Nuclei and the Nature of NGC4569,'' Publ. of the Astron. Soc. of the Pacific, 112, 753-767, 2000.
(79) M. S. Oey, M. A. Dopita, J. C. Shields, & R. C. Smith, ``Calibration of Nebular Emission-Line Diagnostics: I. Stellar Effective Temperatures,'' Astrophys. Jour. Supp., 128, 511-548, 2000.
(80) M. S. Oey & J. C. Shields, ``Calibration of Nebular Emission-Line Diagnostics: II. Abundances,'' Astrophys. Jour., 539, 687-705, 2000.
(81) L. C. Ho, G. Rudnick, H.-W. Rix, J. C. Shields, D. H. McIntosh, A. V. Filippenko, W. L. W. Sargent, & M. Eracleous, ``Double-Peaked Broad Emission Lines in NGC 4450 and Other LINERs,'' Astrophys. Jour., 541, 120-125, 2000.
(82) M. S. Oey, J. C. Shields, M. A. Dopita, & R. C. Smith, ``Calibrating Nebular Diagnostics of T_* and Abundance,'' in Stars, Gas, and Dust in Galaxies, eds. D. Alloin, K. Olsen, & G. Galaz (San Francisco: ASP), 79-82, 2000.
(83) B. M. Sabra, J. C. Shields, & A. V. Filippenko, ``Emission-Line Properties of the Optical Filaments of NGC1275,'' Astrophys. Jour., 545, 157-170, 2000.
(84) T. Matheson, A. V. Filippenko, W. Li, D. C. Leonard, & J. C. Shields, ``Optical Spectroscopy of Type Ib/c Supernovae,'' Astron. Jour., 121, 1648-1675, 2001.
(85) M. Sarzi, H.-W. Rix, J. C. Shields, D. H. McIntosh, L. C. Ho, G. Rudnick, A. V. Filippenko, & W. L. W. Sargent, ``Supermassive Black Holes in Bulges,'' Astrophys. Jour., 550, 65-74, 2001.
(86) J. C. Shields, H.-W. Rix, D. M. McIntosh, L. C. Ho, G. Rudnick, A. V. Filippenko, W. L. W. Sargent, M. Sarzi, & M. Eracleous, `` Variability in LINERs,'' in Probing the Physics of Active Galactic Nuclei by Multiwavelength Monitoring, eds. B. M. Peterson, R. S. Polidan, & R. W. Pogge (San Francisco: ASP), 327-333, 2001.
(87) M. Sarzi, H.-W. Rix, Shields, J. C., G. Rudnick, D. H. McIntosh, L. C. Ho, A. V. Filippenko, & W. L. W. Sargent, ``Supermassive Black Holes from the Survey of Nearby Nuclei with STIS,'' in Galaxy Disks and Disk Galaxies, eds. J. G. Funes & E. M. Corsini (San Francisco: ASP), 261-262, 2001.
(88) S. M. Oey & J. C. Shields, ``Bright-line Diagnostics for Nebular Sulfur Abundance,'' in Galaxy Disks and Disk Galaxies, eds. J. G Funes & E. M. Corsini (San Francisco: ASP), 357-358, 2001.
(89) S. M. Oey & J. C. Shields, ``Evaluating Nebular Sulfur Abundance Diagnostics,'' in Galactic Structure, Stars, and the ISM, eds. M. D. Bicay & C. E. Woodward (San Francisco: ASP), in press, 2001.
(90)T. Boeker, R. P. van der Marel, L. Mazzuca, H.-W. Rix, G. Rudnick, L. C. Ho, & J. C. Shields, ``A Young Stellar Cluster in the Nucleus of NGC 4449,'' Astron. Journ., 121, 1473-1481, 2001.
(91) A. Clocciatti et al., ``The Type Ic SN 1990B in NGC 4568,'' Astrophys. Jour. , 553, 886-896, 2001.
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(93) M. S. Oey, J. C. Shields, M. A. Dopita, & R. C. Smith, ``Calibrating nebular Diagnostics of T_* and Abundance,'' Revista Mexicana Astron. Astrof. (Conference Series), 12, 77-81, 2002.
(94) J. C. Shields & M. Eracleous, ``Implications of Broad-Line Emission in LINERs,'' in The Challenge of High Resolution X-Ray to IR Spectroscopy, ed. G. J. Ferland and D. W. Savin (San Francisco: ASP), 529-532, 2002.
(95) B. M. Sabra, F. Hamann, J. C. Shields, I. George, & B. Jannuzi, ``X-Ray Absorption Associated with High-Velocity UV Absorbers,'' in Mass Outflows in Active Galactic Nuclei: New Perspectives, ed. D. M. Crenshaw, S. B. Kraemer, & I. M. George (San Francisco: ASP), 61-66, 2001.
(96) J. C. Shields, B. M. Sabra, L. C. Ho, A. J. Barth, & A. V. Filippenko, ``Ultraviolet Absorption in LINERs,'' in Mass Outflows in Active Galactic Nuclei: New Perspectives, ed. D. M. Crenshaw, S. B. Kraemer, & I. M. George (San Francisco: ASP), 105-109, 2001.
(97) A. J. Barth, M. Sarzi, L. C. Ho, H.-W. Rix, J. C. Shields, A. V. Filippenko, G. Rudnick, & W. L. W. Sargent, ``Measuring Black Hole Masses Using Ionized Gas Kinematics,'' in The Central Kiloparsec of Starbursts and AGN, ed. J. H. Knapen et al. (San Francisco: ASP), in press, 2002.
(98) A. Constantin, J. C. Shields, F. Hamann, C. B. Foltz, & F. H. Chaffee, ``Emission-Line Properties of z > 4 Quasars,'' Astrophys. Jour., 565, 50-62, 2002.
(99) M. Eracleous, J. C. Shields, G. Chartas, & E. C. Moran, ``Three LINERs under the Chandra X-Ray Microscope,'' Astrophys. Jour. , 565, 108-124, 2002.
(100) D. Branch et al., ``Direct Analysis of Spectra of Type Ib Supernovae,'' Astrophys. Jour., 567, 68-72, 2002.
(101) C. Warner, F. Hamann, J. C. Shields, A. Constantin, C. B. Foltz, & F. H. Chaffee, ``The Metallicity of the Redshift 4.16 Quasar BRI 2248-1242,'' Astrophys. Jour., 567, 68-72, 2002.
(102) M. Sarzi, H.-W. Rix, J. C. Shields, D. H. McIntosh, L. C. Ho, G. Rudnick, A. V. Filippenko, W. L. W. Sargent, & A. Barth, ``Limits on the Mass of the Central Black Hole in Sixteen Nearby Bulges,'' Astrophys. Jour., 567, 237-246, 2002.
(103) L. C. Ho, M. Sarzi, H.-W. Rix, J. C. Shields, G. Rudnick, A. V. Filippenko, & A. J. Barth, ``An Efficient Strategy to Select Targets for Gas-Dynamical Measurements of Black Hole Masses using the Hubble Space Telescope,'' Publ. of the Astron. Soc. of the Pacific, 114, 137-143, 2002.
(104) T. Boeker, S. Laine, R. P. van der Marel, M. Sarzi, H.-W. Rix, L. C. Ho, & J. C. Shields, ``An HST Census of Nuclear Star Clusters in Late-Type Spiral Galaxies: I. Observations and Image Analysis,'' Astron. Jour., 123, 1389-1410, 2002.
(105) S. Kaspi et al., ``The Ionized Gas and Nuclear Environment in NGC 3783. I. Time-Averaged 900 ks Chandra Grating Spectroscopy,'' Astrophys. Jour. , 574, 643-663, 2002.
(106) M. Dietrich, F. Hamann, J. C. Shields, A. Constantin, V. T. Junkkarinen, F. Chaffee, & C. B. Foltz, ``Continuum and Emission Line Strength Relations for a Large Active Galactic Nuclei Sample,'' Astrophys. Jour., 581, 912-924, 2002.
(107) J. R. Gabel et al., ``The Ionized gas and Nuclear Environment in NGC 3783. II. Averaged HST/STIS and FUSE Spectra,'' Astrophys. Jour., 583, 178-191, 2003.
(108) B. M. Sabra, J. C. Shields, L. C. Ho, A. J. Barth, & A. V. Filippenko, ``Emission and Absorption in the M87 LINER,'' Astrophys. Jour., 584, 164-175, 2003.
(109) J. C. Shields, H.-W. Rix, A. J. Barth, A. V. Filippenko, L. C. Ho, D. H. NcIntosh, G. Rudnick, W. L. W. Sargent, & M. Sarzi, ``Black Holes as Traced by Weak Active Nuclei,'' in Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of Black Holes and Galaxies, ed. L. C. Ho (Pasadena: Carnegie Observatories), electronic proceedings), 2003.
(110) C. J. Walcher, N. Haering, T. Boeker, H.-W. Rix, R. van der Marel, J. Gerssen, L. C. Ho, & J. C. Shields, ``Nuclear Star Clusters in Bulgeless Galaxies,'' in Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of Black Holes and Galaxies, ed. L. C. Ho (Pasadena: Carnegie Observatories), electronic proceedings), 2003.
(111) J. Bechtold, A. Siemiginowska, J. Shields, B. Czerny, A. Janiuk, F. Hamann, T. L. Aldcroft, M. Elvis, & A. Dobrzycki, ``Chandra Survey of Radio-Quiet, High-Redshift Quasars,'' Astrophys. Jour., 588, 119-127, 2003.
(112) M. Dietrich, F. Hamann, J. Shields, A. Constantin, I. Appenzellar, & S. J. Wagner, ``Elemental Abundances and High Redshift Quasars,'' to appear in Revista Mexicana Astron. Astrof.} (Conference Series), in press, 2003.
(113) M. Dietrich, F. Hamann, J. Shields, A. Constantin, & M. Vestergaard, ``Continuum and Emission line Correlations in AGN,'' in Active Galactic Nuclei: from Central Engine to Host Galaxy, ed. S. Collin, F. Combes, & I. Shlosman (San Francisco: ASP), 607-608, 2003.
(114) R. W. Pogge, D. L. Fields, P. Martini, & J. C. Shields, ``HST/STIS Spectroscopy of the Nuclei of Seyfert 2s,'' in Active Galactic Nuclei: from Central Engine to Host Galaxy, ed. S. Collin, F. Combes, & I. Shlosman (San Francisco: ASP), 239-240, 2003.
(115) J. C. Shields, B. M. Sabra, L. C. Ho, A. J. Barth, & A. V. Filippenko, ``HST Spectroscopy of the M87 Nucleus,'' in Active Galactic Nuclei: from Central Engine to Host Galaxy, ed. S. Collin, F. Combes, & I. Shlosman (San Francisco: ASP), 401-402, 2003.
(116) T. Boeker, R. P. van der Marel, J. Gerssen, J. Walcher, H.-W. Rix, J. C. Shields, & L. C. Ho, ``The Stellar Content of Nuclear Star Clusters in Spiral Galaxies,'' Proceedings of the SPIE, 4384, 57-65, 2003.
(117) A. Constantin & J. C. Shields, ``Ultraviolet and Optical Properties of Narrow-Line Seyfert 1 Galaxies,'' Publ. of the Astron. Soc. of the Pacific, 115, 592-608, 2003.
(118) M. Dietrich, F. Hamann, J. C. Shields, A. Constantin, J. Heidt, K. Jaeger, M. Vestergaard, & S. J. Wagner, ``Quasar Elemental Abundances at High Redshifts,'' Astrophys. Jour., 589, 722-732, 2003.
(119) B. M. Sabra, F. Hamann, B. T. Jannuzi, I. George, & J. C. Shields, ``The Nature of the UV/X-Ray Absorber in PG 2302+029,'' Astrophys. Jour., 590, 66-72, 2003.
(120) J. R. Gabel et al., ``Variability of the Intrinsic UV Absorption in NGC3783: Detection of a Decreasing Radial Velocity,'' Astrophys. Jour., 595, 120-126, 2003.
(121) H. Netzer et al., ``The Ionized Gas and Nuclear Environment in NGC~3783. IV. Modeling the 900 ks Chandra Spectrum,'' Astrophys. Jour. , 599, 933-948, 2003.
(122) T. Boeker, M. Sarzi, D. E. McLaughlin, R. P. van der Marel, H.-W. Rix, L. C. Ho, & J. C. Shields, ``An HST Census of Nuclear Star Clusters in Late-Type Spiral Galaxies: I. Cluster Sizes and Structural Parameter Correlations,'' Astron. Jour. , 127, 105-118, 2004.
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(124) A. Constantin & J. C. Shields, ``Emission and Absorption in Narrow-Line Seyfert 1 Galaxies,'' in AGN Physics with the Sloan Digital Sky Survey, ed. G. T. Richards & P. B. Hall (San Francisco: ASP), 269-272, 2004.
(125)D. M. Crenshaw, S. B. Kraemer, J. R. Gabel, H. R. Schmitt, A. V. Filippenko, L. C. Ho, J. C. Shields, & T. J. Turner, ``High Resolution UV Spectra of the Dwarf Seyfert 1 Galaxy NGC~4395: Evidence for Intrinsic Absorption,'' Astrophys. Jour., 612, 152-158, 2004.
(126) M. Sarzi, H.-W. Rix, J. C. Shields, L. C. Ho, A. J. Barth, G. Rudnick, A. V. Filippenko, & W. L. Sargent, ``The Stellar Populations in the Central Parsecs of Bulges,'' in The Interplay among Black Holes, Stars, and ISM in Galactic Nuclei, ed. T. Storchi Bergmann, L. C. Ho, & H. R. Schmitt (San Francisco: ASP), 145-148, 2004.
(127) J. C. Shields and the SUNNS Collaboration, ``Nebular Excitation of Low-Luminosity Emission Nuclei,'' in The Interplay among Black Holes, Stars, and ISM in Galactic Nuclei, ed. T. Storchi Bergmann, L. C. Ho, & H. R. Schmitt (San Francisco: ASP), 295-298, 2004.
(128) T. Boeker, C.-J. Walcher, H.-W. Rix, N. Haering, E. Schinnerer, M. Sarzi, R. P. van der Marel, L. C. Ho, J. C. Shields, U. Lisenfeld, & S. Laine, ``The Nuclei of Late-Type Spiral Galaxies,'' in The Formation and Evolution of Massive Young Star Clusters, ed. H. J. G. L. M. Lamers, A. Nota, & L. J. Smith (San Francisco: ASP), 39-48, 2004.
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Updated: 2006 March 27