Aaron J. Romanowsky

Research and Interests: Ph.D. thesis, 1999-2003, Description for the general public

Expanded Bibliography | Curriculum Vitae | Refereed Papers | Unrefereed Papers | Conference Proceedings
Refereed Papers - see also SAGES and PN.S papers

"The globular cluster system of NGC 1399. V. Dynamics of the cluster system out to 80 kpc", Schuberth Y., Richtler T., Hilker M., Dirsch B., Bassino L.P., Romanowsky, A.J., & Infante L., 2009, A&A, submitted

"Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii", Proctor R.N., Forbes D.A., Romanowsky A.J., Brodie J.P., Strader J., Spolaor M., Mendel J.T., & Spitler L., 2009, MNRAS, in press, arXiv:0905.4424

"Central mass-to-light ratios and dark matter fractions in early-type galaxies", Tortora C., Napolitano N.R., Romanowsky A.J., Capaccioli M., & Covone G., 2009, MNRAS, 396, 1132

"Mapping the dark side with DEIMOS: globular clusters, X-ray gas, and dark matter in the NGC 1407 group", Romanowsky A.J., Strader J., Spitler L., Johnson R., Brodie J.P., Forbes D.A., Ponman T., 2009, AJ, 137, 4956

"Dearth of dark matter or massive dark halo? Mass-shape-anisotropy degeneracies revealed by NMAGIC dynamical models of the elliptical galaxy NGC 3379", De Lorenzi F., Gerhard O., Coccato L., Arnaboldi M., Capaccioli M., Douglas N.G., Freeman K.C., Kuijken K., Merrifield M.R., Napolitano N.R., Noordermeer E., Romanowsky A.J. & Debattista V.P., 2009, MNRAS, 395, 76

"Kinematic properties of early-type galaxy haloes using planetary nebulae", Coccato L., Gerhard O., Arnaboldi M., Das P., Douglas N.G., Kuijken K., Merrifield M.R., Napolitano N.R., Noordermeer E., Romanowsky A.J., Capaccioli M., Cortesi A., De Lorenzi F., Freeman K.C., 2009, MNRAS, 394, 1249

"The Planetary Nebula Spectrograph elliptical galaxy survey: the dark matter in NGC 4494", Napolitano N.R., Romanowsky A.J., Coccato L., Capaccioli M., Douglas N.G., Noordermeer E., Gerhard O., Arnaboldi M., De Lorenzi F., Kuijken K., Merrifield M.R., O'Sullivan E., Cortesi A., Das P. & Freeman K.C., 2009, MNRAS, 393, 329

"Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023", Noordermeer E., Merrifield M.R., Coccato L., Arnaboldi M., Capaccioli M., Douglas N.G., Freeman K.C., Gerhard O., Kuijken K., De Lorenzi F., Napolitano N.R. & Romanowsky A.J., 2008, MNRAS, 384, 943

"The dark matter halo of NGC1399 - CDM or MOND?", Richtler T., Schuberth Y., Hilker M., Dirsch B., Bassino L. & Romanowsky A.J., 2008, A&A, 478, L23

"The star pile in Abell 545", Salinas R., Richtler T., Romanowsky A.J., West M.J., & Schuberth Y., 2007, A&A, 475, 707

"The PN.S Elliptical Galaxy Survey: data reduction, planetary nebula catalog, and basic dynamics for NGC 3379", Douglas N.G., Napolitano N.R., Romanowsky A.J., Coccato L., Kuijken K., Merrifield M.R., Arnaboldi M., Gerhard O., Freeman K.C., Merrett H.R., Noordermeer E., Capaccioli M., 2007, ApJ, 664, 257

"The Araucaria Project. An accurate distance to NGC 6822 from near-infrared photometry of Cepheid variables", Gieren W., Pietrzynski G., Nalewajko K., Soszynski I., Bresolin F., Kudritzki R.-P., Minniti D., Romanowsky A.. 2006, ApJ, 647, 1056

"A deep kinematic survey of planetary nebulae in the Andromeda Galaxy using the Planetary Nebula Spectrograph", Merrett H. R., Merrifield M. R., Douglas N. G., Kuijken K., Romanowsky A. J., Napolitano N. R., Arnaboldi M., Capaccioli M., Freeman K. C., Gerhard O., Coccato L., Carter D., Evans N. W., Wilkinson M. I., Halliday C., Bridges T. J. 2006, MNRAS, 369, 120

"Planetary nebula velocities in the disk and bulge of M31", Halliday C., Carter D., Bridges T. J., Jackson Z. C., Wilkinson M. I., Quinn D. P., Evans N. W., Douglas N. G., Merrett H. R., Merrifield M. R., Romanowsky A. J., Kuijken K., Irwin M. J. 2006, MNRAS, 369, 97

"Wide-field kinematics of globular clusters in the Leo I group", Bergond G., Zepf S. E., Romanowsky A. J., Sharples R. M., & Rhode K. L., 2006, A&A, 448, 155

"Mass-to-light ratio gradients in early-type galaxy haloes", Napolitano N. R., Capaccioli M., Romanowsky A. J., Douglas N. G., Merrifield, M. R., Kuijken K., Arnaboldi M., Gerhard O., & Freeman K. C. 2005, MNRAS, 357, 691

"Tracing the star stream through M31 using planetary nebula kinematics", Merrett H. R., Kuijken K., Merrifield M. R., Romanowsky A. J., Douglas N. G., Napolitano N. R., Arnaboldi M., Capaccioli M., Freeman K. C., Gerhard O., Evans N.W., Wilkinson M. I., Halliday C., Bridges T. J., & Carter D. 2003, MNRAS, 346, L62

"A dearth of dark matter in ordinary elliptical galaxies", Romanowsky A. J., Douglas N. G., Arnaboldi M., Kuijken K., Merrifield M. R., Napolitano N. R., Capaccioli M., & Freeman K. C. 2003, Science, 301, 1696

"The Planetary Nebula Spectrograph: the green light for galaxy kinematics", Douglas, N. G., Arnaboldi, M., Freeman, K. C., Kuijken, K., Merrifield, M. R., Romanowsky, A. J., Taylor, K., Capaccioli, M., Axelrod, T., Gilmozzi, R., Hart, J., Bloxham, G., & Jones, D. 2002, PASP, 114, 1234

"Dynamics of stars and globular clusters in M87", Romanowsky, A. J., & Kochanek, C. S. 2001, ApJ, 553, 722

"Constraints on H0 from the central velocity dispersions of lens galaxies", Romanowsky, A. J., & Kochanek, C. S. 1999, ApJ, 516, 18

"Twisting of X-ray isophotes in triaxial galaxies", Romanowsky, A. J., & Kochanek, C. S. 1998, ApJ, 493, 641

"Structural and dynamical uncertainties in modelling axisymmetric elliptical galaxies", Romanowsky, A. J., & Kochanek, C. S. 1997, MNRAS, 287, 35



Unrefereed Papers

"Structure and substructure of galactic spheroids", Romanowsky, A. J., Brodie, J. P., Bullock, J. S., Ciardullo, R., Guhathakurta, P., Hoffman, L., Olsen, K. A. G., Primack, J. R., & van de Ven, G. 2009, Astro2010 Science White Paper, arXiv:0902.3025

"The star formation histories of disk and E/S0 galaxies from resolved stars", Olsen, K. A. G., Romanowsky, A. J., Saha, A., Skillman, E., Williams, B. F., & Wyse, R. F. G. 2009, Astro2010 Science White Paper, arXiv:0902.4216

"The Planetary Nebula Spectrograph successfully commissioned", Merrifield, M. R., Douglas, N. G., Kuijken, K., & Romanowsky, A. J. 2001, The ING Newsletter, 5, 17

"Extragalactic planetary nebula kinematics with the WHT", Romanowsky, A. J., Douglas, N. G., Arnaboldi, M., & Kuijken, K. 2001, The ING Newsletter, 4, 23



Conference Proceedings

"The orbital structure of the massive elliptical galaxy, NGC 5846", Das, P., Gerhard, O., Coccato, L., Churazov, E., Forman, W., Finoguenov, A., Böhringer, H., Arnaboldi, M., Capaccioli, M., Cortesi, A., de Lorenzi, F., Douglas, N.G., Freeman, K.C., Kuijken, K., Merrifield, M.R., Napolitano, N.R., Noordermeer, E., & Romanowsky, A.J. 2008, Astron. Nachr., in press

"Probing the early-type galaxy halos using planetary nebulae as kinematic tracers", Coccato, L., Gerhard, O., Arnaboldi, M., Das, P., Douglas, N.G., Kuijken, K., Merrifield, M.R., Napolitano, N.R., Noordermeer, E., Romanowsky, A.J., Capaccioli, M., Cortesi, A., De Lorenzi, F., & Freeman, K.C. 2008, Astron. Nachr., in press

"Dark-matter content of early-type galaxies with planetary nebulae", Napolitano N.R., Romanowsky A.J., Coccato L., Capaccioli M., Douglas N.G., Noordermeer E., Merrifield M.R., Kuijken K., Arnaboldi M., Gerhard O., Freeman, K.C., De Lorenzi F., & Das P. 2008, in Proc. IAU Symp. 244, Dark Galaxies & Lost Baryons, ed. J.I. Davies & M.J. Disney (Cambridge: Cambridge Univ. Press), 289

"Kinematics of globular cluster systems", Romanowsky A. J. 2006, in Globular Clusters - Guides to Galaxies, ed. T. Richtler, S.S. Larsen, in press, astro-ph/0609251

"Planetary nebulae as mass tracers in galaxies", Romanowsky A. J. 2006, in Proc. IAU Symp. 234, Planetary Nebulae in Our Galaxy and Beyond, ed. M.J. Barlow & R.H. Mendez (Cambridge: Cambridge Univ. Press), 341

"Probing the environment with galaxy dynamics", Romanowsky A. J. 2007, in ESO Astrophysics Symp., Groups of Galaxies in the Nearby Universe, ed. I. Saviane, V.D. Ivanov & J. Borissova (Berlin: Springer), 385

"Dynamics in galaxy halos", Romanowsky, A.J. 2006 in XI IAU Regional Latin American Meeting of Astronomy, ed.. L. Infante & M. Rubio, RevMexAA SC 26, 198

"NGC 1399 and MOND", Richtler, T., Schuberth, Y., & Romanowsky, A. 2006, in XI IAU Regional Latin American Meeting of Astronomy, ed.. L. Infante & M. Rubio, RevMexAA SC 26, 198

"Elliptical galaxy halo masses from internal kinematics", Romanowsky, A. J. 2006, in Proc. XXIst IAP Colloq., Mass Profiles and Shapes of Cosmological Structures, ed. G. A. Mamon, F. Combes, C. Deffayet, & B. Fort, (Paris: EDP Sciences), 119

"Planetary nebulae as dynamical tracers: mass-to-light-ratio gradients in early-type galaxies", Napolitano N.R., Romanowsky A.J., Capaccioli M., Kuijken K., Merrifield M.R., Douglas N.G., Arnaboldi M., Freeman K.C. & Gerhard O. 2006 in ESO Astrophysics Symp., Planetary Nebulae beyond the Milky Way, ed. L. Stanghellini, J.R. Walsh & N.G. Douglas (Berlin: Springer), 324

"Probing halos with PNe: mass and angular momentum in early-type galaxies", Romanowsky, A. J. 2006, in ESO Astrophysics Symp., Planetary Nebulae beyond the Milky Way, ed. L. Stanghellini, J.R. Walsh & N.G. Douglas (Berlin: Springer), 294

"Mapping the stellar dynamics of M31", Merrett, M., Merrifield, M., Kuijken, K., Romanowsky, A., Douglas, N., Napolitano, N., Arnaboldi, M., Capaccioli, M., Freeman, K., Gerhard, O., Carter, D., Evans, N. W., Wilkinson, M., Halliday, C., & Bridges, T. 2006, in ESO Astrophysics Symp., Planetary Nebulae beyond the Milky Way, ed. L. Stanghellini, J.R. Walsh & N.G. Douglas (Berlin: Springer), 281

"Halo masses of early-type galaxies: theory vs observation", Romanowsky, A. J., Napolitano, N. R., Capaccioli, M., Douglas, N. G., Merrifield, M. R., Kuijken, K., Arnaboldi, M., Gerhard, O., & Freeman, K. C. 2004, BAAS, 36, 5, 1397

"Some dynamical constraints on the halo of NGC 3379 from wide-field spectroscopy of its globular cluster system", Zepf, S. E., Bergond, G., Romanowsky, A. J., Rhode, K. L., & Sharples, R. M., 2004, BAAS, 36, 5, 1397

"Galaxy dynamics with the Planetary Nebula Spectrograph", Napolitano, N. R., Romanowsky, A. J., Douglas, N. G., Capaccioli, M., Arnaboldi, M., Kuijken, K., Merrifield, M. R., Freeman, K. C., & Gerhard, O. 2004, Mem. S.A.It. Suppl., 5, 255

"Halo tracers in nearby galaxies", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Merrifield, M. R., Arnaboldi, M., Merrett, H., Napolitano, N. R., Capaccioli, M., Freeman, K. C., Bergond, G., Sharples, R. M., Zepf, S. E., & Rhode, K. L. 2003, BAAS, 35, 5, 1312

"Elliptical galaxies: darkly cloaked or scantily clad?", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Merrifield, M. R., Arnaboldi, M., Napolitano, N. R., Merrett, H., Capaccioli, M., Freeman, K. C., & Gerhard, O. 2004, in Proc. IAU Symp. 220, Dark Matter in Galaxies, ed. S. Ryder, D. J. Pisano, M. Walker, & K. Freeman, (San Francisco: ASP), 165

"Early-type galaxy halo dynamics inferred using the PN Spectrograph", Douglas, N. G., Romanowsky, A. J., Kuijken, K., Merrifield, M. R., Napolitano, N. R., Arnaboldi, M., Freeman, K. C., Capaccioli, M., & Gerhard, 0. 2004 "Elliptical galaxies: darkly cloaked or scantily clad?", in Proc. IAU Symp. 220, Dark Matter in Galaxies, ed. S. Ryder, D. J. Pisano, M. Walker, & K. Freeman, (San Francisco: ASP), 171

"Is there a dichotomy in the dark matter as well as in the baryonic matter properties of ellipticals?", Napolitano, N. R., Capaccioli, M., Arnaboldi, M., Merrifield, M. R., Douglas, N. G., Kuijken, K., Romanowsky, A. J., & Freeman, K. C. 2004, in Proc. IAU Symp. 220, Dark Matter in Galaxies, ed. S. Ryder, D. J. Pisano, M. Walker, & K. Freeman, (San Francisco: ASP), 173

"Modern techniques in galaxy kinematics: Results from planetary nebula spectroscopy", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Arnaboldi, M., Gerssen, J., & Merrifield, M. R. 2003, in Proc. IAU Symp. 209, Planetary Nebulae: Their Evolution and Role in the Universe, ed. S. Kwok, M. Dopita, & R. Sutherland (San Francisco: ASP), 639

"Modern techniques in galaxy kinematics: CDI and the Planetary Nebula Spectrograph", Douglas, N. G., Kuijken, K., Romanowsky, A. J., Merrifield, M. R., Arnaboldi, M., Freeman, K., & Taylor, K. 2003, in Proc. IAU Symp. 209, Planetary Nebulae: Their Evolution and Role in the Universe, ed. S. Kwok, M. Dopita, & R. Sutherland (San Francisco: ASP), 637

"Dynamics of stars and globular clusters in galaxy halos", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Arnaboldi, M., Kissler-Patig, M., Sharples, R. M., Zepf, S. E., & Rhode, K. L. 2003, in ESO Astrophysics Symp., Extragalactic Globular Cluster Systems, ed. M. Kissler-Patig (Berlin: Springer), 310

"Dynamical constraints on early-type galaxy halos", Romanowsky, A. J., Arnaboldi, M., Douglas, N. G., Kuijken, K., Merrifield, M. R., Freeman, K. C., & Gerssen, J. 2003, in Galaxy Evolution: Theory and Observations, ed. V. Avila-Reese, C. Firmani, C. S. Frenk, & C. Allen, RevMexAA SC 17, 45

"Mass distributions in early-type galaxy halos", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Merrifield, M. R., Arnaboldi, M., Freeman, K. C., & Taylor, K. 2003, in ESO Astrophysics Symp., The Mass of Galaxies at Low and High Redshift, ed. R. Bender & A. Renzini (Berlin: Springer), 72

"Dynamics of globular cluster systems in elliptical galaxies", Romanowsky, A. J. 2002, in Proc. IAU Symp. 207, Extragalactic Star Clusters, ed. D. Geisler, E. K. Grebel, & D. Minniti (San Francisco: ASP), 336

"Tracing early-type galaxy halo dynamics", Romanowsky, A. J., Douglas, N. G., Kuijken, K., Merrifield, M. R., Arnaboldi, M., Freeman, K. C., & Taylor, K. 2001, BAAS, 33, 4, 1533

"Kinematics of planetary nebulae in NGC 4472", Romanowsky, A. J., Douglas, N. G., Kuijken, K., & Arnaboldi, M. 2001, BAAS, 33, 1, 719

"Halo dynamics of elliptical galaxies", Romanowsky, A. J. 2000, BAAS, 32, 2, 694

"Dynamics of the Sgr A* cluster", Romanowsky, A. J., & Kochanek, C. S. 2001, in ASP Conf. Ser. Vol. 228, Dynamics of Star Clusters and the Milky Way, ed. S. Deiters, B. Fuchs, A. Just, R. Spurzem, & R. Wielen (San Francisco: ASP), 556

"Halo dynamics of M87", Romanowsky, A. J., & Kochanek, C. S. 2000, in ASP Conf. Ser. Vol. 197, XVth IAP Meeting, Dynamics of Galaxies: From the Early Universe to the Present, ed. F. Combes, G. A. Mamon, & V. Charmandaris (San Francisco: ASP), 401

"Stellar dynamics at the Galactic center", Romanowsky, A. J., & Kochanek, C. S. 1999, BAAS, 31, 1, 666

"A global dynamical model of M87", Romanowsky, A. J. 1999, in ASP Conf. Ser. Vol 182, Galaxy Dynamics, A Rutgers Symposium, ed. D. Merritt, J. A. Sellwood, & M. Valluri (San Francisco: ASP), 158

"Orbit modeling of the lensing galaxy in 0957+561", Romanowsky, A. J. 1998, in ASP Conf. Ser. Vol. 136, Galactic Halos: A UC Santa Cruz Workshop, ed. D. Zaritsky (San Francisco: ASP), 317

"New projections of triaxiality", Romanowsky, A. J., & Kochanek, C. S. 1997, in ASP Conf. Ser. Vol. 116, The Second Stromlo Symposium: The Nature of Elliptical Galaxies, ed. M. Arnaboldi, G. S. Da Costa & P. Saha (San Francisco, ASP), 107

"Ultrashort-pulse reflectometry", Domier, C. W., Luhmann, Jr., N. C., Chou, A. E., Zhang, W.-M., & Romanowsky, A. J. 1995, Rev. Sci. Instrum., 66, 399


Last updated 10 June 2009