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Research projects

 
Area of research: "quasar host galaxies"
  • morphology
  • spectral modelling (PhD project)
  • stellar populations of host galaxies (PhD project)
  • emission line regions around quasars
  • integral field spectroscopy, e.g. with PMAS and within the Euro3D research training network
  • AGN fuelling mechanisms (major/minor merging and gas accretion)
  • quasar host galaxies at high redshift and quasar evolution (GEMS project and with adaptive optics)
Education:
  • 1991-1998 studies of physics and astronomy at Univ. of Hamburg (Germany)
  • 1994/95 a study excursion to Uppsala (Sweden)
  • 1997/1998 diploma thesis at Hamburger Sternwarte on the "Morphology of quasar host galaxies" (german, PS|PS gziped)
  • 1998-2002 PhD research at the same place on "Stellar populations of QSO host galaxies" (english, PDF)
Collaborations:
  • Eva Örndahl, Tuorla Observatory, Finland: "Multicolour study of Palomar-Green QSO hosts" and "Adaptive Optics studies of high-z QSO host galaxies" (since 1997)
  • Frederic Courbin (EPFL/Lausanne), Geraldine Letawe et al. (Liége), "VLT spectroscopy of QSO hosts" (since 2000)
  • Now also working with PMAS, the Potsdam Multi Aperture Spectrometer, and the PMAS-group.
  • Björn Kuhlbrodt, AIP: "2d modelling of AGN images"
  • Lutz Wisotzki, Uni Potsdam/AIP, a lot of host galaxy thingies
  • Member of the GEMS team for the investigation of QSO host galaxies, their morphology, environment and evolution.
  • Mara Salvato and colleagues (galaxies group) at the MPE in Garching, investigating the composition, dynamics and kinematics of lower luminosity QSO host galaxies with the VLT.
  • New member of the COSMOS project.

Teaching:

  • "Aktive Galaxien, Quasare, Schwarze Löcher" (SoSe 2005) [class webpage]
  • Übungen zu "Einführung in die Astronomie und Astrophysik II" (SoSe 2004) [class webpage]
  • Übungen zu "Kosmologie und frühes Universum" (SoSe 2003) [class webpage]

Publications:

Refereed Journals:

  • Barden M., Rix H.-W., Somerville R. S., Häußler B., Bell E. F., Peng C. Y., Borch A., Beckwith S. V. W., Caldwell J. A. R., Heymans C., Jahnke K., Jogee S., McIntosh D. H., Meisenheimer K., Sánchez S. F., Somerville R. S., Wisotzki L., Wolf C., ApJ (in press), "GEMS: The size evolution of disk galaxies" (astro-ph)
  • McIntosh D. H., Bell E. F., Rix H.-W., Wolf C., Barden M., Beckwith S. V. W., Borch A., Caldwell J. A. R., Häußler B., Heymans C., Jahnke K., Jogee S., Meisenheimer K., Peng C. Y., Sánchez S. F., Somerville R. S., Wisotzki L., ApJ (in press), "The evolution of early-type, red galaxies with the GEMS survey: luminosity-size and mass-size relations since z~1" (astro-ph)
  • Magain P., Letawe G., Courbin F., Jablonka P., Jahnke K., Meylan G., Wisotzki L., 2005, Nature, 437, 381: "Discovery of a quasar without a massive host galaxy" (astro-ph)
  • Kuhlbrodt B., Örndahl E., Wisotzki L., Jahnke K., 2005, A&A, 439, 497, "High-redshift quasar host galaxies with adaptive optics" (ADS | astro-ph)
  • Wolf C., Bell E. F., McIntosh D. H., Rix H.-W., Barden M., Beckwith S. V. W., Borch A., Caldwell J. A. R., Häußler B., Heymans C., Jahnke K., Jogee S., Meisenheimer K., Peng C. Y., Sánchez S. F., Somerville R. S., Wisotzki L., ApJ (in press), "GEMS: In what type of galaxies do most stars form at z~0.7?" (astro-ph)
  • Heymans C., Brown M. L., Barden M., Caldwell J. A. R., Jahnke K., Rix H.-W., Taylor A. N., Beckwith S. V., Bell E. F., Borch A., Häußler B., Jogee S., McIntosh D. H., Meisenheimer K., Peng C. Y., Sánchez S. F., Somerville R., Wisotzki L., Wolf C., 2005, MNRAS, 361, 160, "Weak lensing: cosmology with the HST GEMS survey" (ADS | astro-ph)
  • Sánchez S. F., Becker T., Garcia-Lorenzo B., Benn C. R., Christensen L., Kelz A., Jahnke K., Roth M. M., 2005, A&A, 429, L21, "The merging/AGN connection. II. Ionisation of the circumnuclear region" (ADS | astro-ph)
  • Christensen L., Schulze-Ladbeck R. E., Sánchez S. F., Roth M. M., Jahnke K., Wisotzki L., Becker T., Kelz A., 2005, A&A, 429, 477, "Abundances and kinematics of a candidate sub-damped Lyman alpha galaxy candidate towards PHL 1226" (ADS | astro-ph)
  • Jogee S., Barazza F. D., Rix H.-W, Shlosman I., Barden M., Wolf C., Davies J., Heyer I., Beckwith S. V. W, Bell E. F., Borch A., Caldwell J. A. R., Conselice C., Dahlen T., Häußler B., Heymans C., Jahnke K., Knapen J. H., Laine S., Lubell G. M, Mobasher B., McIntosh D. H., Meisenheimer K., Peng C. Y., Ravindran S., Sánchez S. F., Somerville R. S. and Wisotzki L., 2004, ApJL, 615, L105, "Bar Evolution over the Last 8 Billion Years: A Constant Fraction of Strong Bars in the GEMS Survey" (ADS | astro-ph)
  • Sánchez S. F., Jahnke K., Wisotzki L., McIntosh D. H., Bell E. F., Barden M., Beckwith S. V. W., Borch A., Caldwell J. A. R., Häußler B., Jogee S., Meisenheimer K., Peng C. Y., Rix H.-W., Somerville R. S., Wolf C., 2004, ApJ, 614, 586, "Colors of Active Galactic Nucleus Host Galaxies at 0.5<z<1.1 from the GEMS Survey" (ADS | astro-ph)
  • Jahnke K., Sánchez S. F., Wisotzki L., Barden M., Beckwith S. V. W., Bell E. F., Borch A., Caldwell J. A. R., Häußler B., Heymans C., Jogee S., McIntosh D. H., Meisenheimer K., Peng C. Y., Rix H.-W., Somerville R. S., Wolf C., 2004, ApJ, 614, 568, "UV light from young stars in GEMS quasar host galaxies at 1.8<z<2.75" (ADS | (astro-ph)
  • Letawe G., Courbin F., Magain P., Hilker M., Jablonka P., Jahnke K., Wisotzki L., 2004, A&A, 434, 455, "On-axis spectroscopy of the z=0.144 radio-loud quasar HE1434-1600: an elliptical host with a highly ionized ISM"(ADS | astro-ph)
  • Jahnke K., Kuhlbrodt B., Wisotzki L., 2004, MNRAS, 352, 399, "Quasar host galaxy star formation activity from multicolour data" (ADS | astro-ph)
  • Wisotzki L., Schechter P. L., Chen H.-S., Richstone D., Jahnke K., Sánchez S. F., Reimers D., 2004, A&A, 419, L31, "HE 0047-1756: A new gravitationally lensed double QSO" (ADS | astro-ph)
  • Rix H.-W., Barden M., Beckwith S. V. W., Bell E. F., Borch A., Caldwell J. A. R., Häußler B., Jahnke K., Jogee S., McIntosh D. H., Meisenheimer K., Peng C. Y., Sánchez S. F., Somerville R. S., Wisotzki L., Wolf C., 2004, ApJS, 152, 163, "GEMS: Galaxy Evolution from Morphologies and SEDs" (ADS | astro-ph)
  • Kuhlbrodt B., Wisotzki L., Jahnke K., 2004, MNRAS, 349, 1027, "Decomposition of AGN host galaxy images" (ADS | astro-ph)
  • Christensen L., Sánchez S. F., Jahnke K., Becker T., Wisotzki L., Kelz A., Popovic L. C., Roth M. M., 2004, A&A, 417, 487: "Integral field spectroscopy of extended Ly alpha emission from the DLA galaxy in Q2233+131" (ADS | astro-ph)
  • Wisotzki L., Becker T., Christensen L., Jahnke K., Helms A., Kelz A., Roth M. M., Sánchez S. F., 2004, AN, 325, 135, "Integral field spectrophotometry of gravitationally lensed QSOs with PMAS" (ADS)
  • Jahnke K., Wisotzki L., Sánchez S. F., Christensen L., Becker T., Kelz A., Roth M. M., 2004, AN, 325, 128, "Integral field spectroscopy of QSO host galaxies galaxies" (ADS | astro-ph)
  • Christensen L., Sánchez S. F., Jahnke K., Becker T., Kelz A., Wisotzki L., Roth M. M., 2004, AN, 325, 124, "Integral field observations of damped Lyman-alpha galaxies" (ADS | astro-ph)
  • Sánchez S. F., Christensen L., Becker T., Kelz A., Jahnke K., Benn C. R., García-Lorenzo B., Roth M. M., 2004, AN, 325, 112, "The merging/AGN connection: A case for 3D spectroscopy" (ADS | astro-ph)
  • Bell E. F., McIntosh D. H., Barden M., Wolf C., Caldwell J. A. R., Rix H.-W., Beckwith S. V. W., Borch A., Häußler B., Jahnke K., Jogee S., Meisenheimer K., Peng C., Sánchez S. F., Somerville R., Wisotzki L., 2004, ApJL, 600, 11, "GEMS imaging of Red Sequence galaxies at z~0.7: Dusty or old?" (ADS | astro-ph)
  • Jahnke K., Wisotzki L., 2003, MNRAS, 346, 304, "The B band luminosities of quasar host galaxies" (ADS | astro-ph)
  • Wisotzki L., Becker T., Christensen L., Helms A., Jahnke K., Kelz A., Roth M. M., Sánchez S. F., 2003, A&A, 408, 455, "Integral-field spectroscopy of the quadruple QSO HE 0435-1223: Evidence for microlensing" (ADS | astro-ph)
  • Christensen L., Becker T., Jahnke K., Kelz A., Roth M. M., Sánchez S. F., Wisotzki L., 2003, A&A, 401, 479, "Integral field spectroscopy of SN2002er with PMAS" (ADS | astro-ph)
  • Courbin F., Letawe G., Magain P., Wisotzki L., Jablonka P., Jahnke K., Kuhlbrodt B., Alloin D., Meylan G., Minniti D., Burud I., 2002, A&A, 394, 863, "On-axis spatially resolved spectroscopy of low redshift quasar host galaxies: HE 1503+0228, at z = 0.135" (ADS | astro-ph)
Submitted:
  • Bell E. F., Naab T., McIntosh D. H., Somerville R. S., Caldwell J. A. R., Barden M., Wolf C., Beckwith S. V. W., Borch A., Häußler B., Jahnke K., Jogee S., Meisenheimer K., Peng C. Y., Rix H.-W., Sánchez S. F., Wisotzki L., submitted to ApJ, "On the importance of gas-free major mergers in shaping massive early-type galaxies: Clues from GEMS" (astro-ph)
  • Jahnke K., submitted to New Astronomy, "On the periodic clustering of cosmic ray exposure ages of iron meteorites" (astro-ph)
Non-refereed, proceedings, et al.:
  • Sánchez S. F., García-Lorenzo B., Jahnke K., Mediavilla E., González-Serrano J. I., Christensen L., Wisotzki L., 2005, in 'Proceedings of the Workshop on Adaptive-Optics assisted Integral-Fiels-Spectroscopy', 9-11 May 2005 on La Palma, Spain, New Astronomy Reviews, "Decoupling the Host and Nuclear spectra of type I AGNs using Integral Field Spectroscopy: A test on 3C 120"
  • Heymans C., Brown M. L., Barden M., Caldwell J., Häußler B.,Jahnke K., Rix H.-W., Beckwith S., Bell E. F., Borch A., Jogee S., McIntosh D., Meisenheimer K., Peng C., Sánchez S. F., Somerville R., Taylor A. N., Wisotzki L., Wolf C., 2004, in 'Wide-field imaging from space', Berkeley, USA, 05/2004, New Astronomy Reviews, "Weak lensing studies from space with GEMS"
  • Kelz A., Roth M. M., Becker T., Böhm P., Christensen L., Jahnke K., Sánchez S. F., 2004, AN, 325, Supplement 1, p. 131, Short Contributions Presented at the Annual Scientific Meeting of the Astronomische Gesellschaft and the Czech Astronomical Society in Prague, September 20-25, 2004., "3D-Spectroscopy with PMAS at Calar Alto" (ADS)
  • Kelz A., Sánchez S. F., Becker T., Christensen L., Jahnke K., Roth M. M., 2004, AN, 325, Supplement 1, p. 52, Short Contributions Presented at the Annual Scientific Meeting of the Astronomische Gesellschaft and the Czech Astronomical Society in Prague, September 20-25, 2004., "3D-Spectroscopy with PMAS at Calar Alto" (ADS)
  • Jogee S., Barazza F. D., Rix H.-W., Davies J., Heyer I., Barden M., Beckwith S. V. W., Bell E. F., Borch A., Caldwell J. A. R., Conselice C., Häußler B., Heymans C., Jahnke K., Knapen J. H., Laine S., Lubell G. M., Mobasher B., McIntosh D. H., Meisenheimer K., Peng C. Y., Ravindranath S., Sánchez S. F., Shlosman I., Somerville R. S., Wisotzki L., Wolf C., 'Penetrating Bars through Masks of Cosmic Dust: The Hubble Tuning Fork Strikes a New Note', eds. D. Block, K. Freeman, R. Groess, I. Puerari, & E.K. Block (Dordrecht: Kluwer) "Evolution and Impact of Bars over the Last Eight Billion Years: Early Results from GEMS" (astro-ph)
  • Wisotzki L., Jahnke K., Sánchez S. F., Wolf C., Barden M., Bell E. F., Borch A., Häußler B., Meisenheimer K., Rix H.-W., Beckwith S. V. W., Caldwell J. A. R., Jogee S., Somerville R. S., McIntosh D. H., Peng C. Y., 2004, in 'Multiwavelength AGN Surveys', Cozumel, Mexico, 12/2003, "Evolution of optically faint AGN from COMBO-17 and GEMS" (astro-ph)
  • Jahnke K., Sanchez S. F., Häußler B., 2004, "Skywalking GEMS and UDF" (astro-ph)
  • Jogee S., Lubell G., Davies J., Peng C. Y., Rix H.-W., Somerville R. S., Knapen J. H., Shlosman I., Barden M., Beckwith S. V. W., Bell E. F., Borch A., Caldwell J. A. R., Conselice C., Häußler B., Jahnke K., Laine S., McIntosh D. H., Meisenheimer K., Mobasher B., Ravindranath S., Sanchez S. F., Wisotzki L., & Wolf C., 2003, American Astronomical Society Meeting, "Bar-Driven Galaxy Evolution at Intermediate Redshifts" (ADS)
  • Jahnke K., Sánchez S. F., Wisotzki L., Häußler B., Rix H.-W., Beckwith S., Barden M., Bell E., Borch A., Caldwell J., Jogee S., McIntosh D. H., Meisenheimer K., Peng C., Somerville R. S., Wolf C., 2004, to appear in 'Proceedings of the ESO/USM/MPE Workshop on Multiwavelength Mapping of Galaxy Formation and Evolution', Venice, Italy, 13-16 October 2003, eds. R. Bender and A. Renzini, Springer series "ESO Astrophysics Symposia"
  • Sánchez S. F., Jahnke K., Wisotzki L., Häußler B., Rix H.-W., Beckwith S., Barden M., Bell E., Borch A., Caldwell J., Jogee S., McIntosh D. H., Meisenheimer K., Peng C., Somerville R. S., Wolf C., 2004, in proceeding of "Jornadas Cientificas, 250 años de Astronomia en España", held at the Real Observatorio de la Armada (ROA), Cadiz, September 2003
  • Häußler B., Rix H.-W., Beckwith S., Barden M., Bell E., Borch A., Caldwell J., Jahnke K., Jogee S., McIntosh D. H., Meisenheimer K., Peng C., Sánchez S. F., Somerville R. S., Wisotzki L., Wolf C., 2003, Maps of the Cosmos, International Astronomical Union. Symposium no. 216, held 14-17 July, 2003 in Sidney, Australia: "Fitting 20,000 Galaxies: Galfit Meets GEMS" (ADS)
  • Somerville R. S., Barden M., Beckwith S. V. W., Bell E., Borch A., Caldwell J., Haussler B., Jahnke K., Jogee S., McIntosh D., Meisenheimer K., Peng C., Rix H. W., Sanchez S., Wisotzki L., Wolf C., 2003, American Astronomical Society Meeting 202, #17.06: "Morphologies and SEDs for 10,000 Galaxies to z=1.2: Early Results from GEMS" (ADS)
  • Courbin F., Letawe G., Magain P., Wisotzki L., Jablonka P., Jahnke K., Kuhlbrodt B., Alloin D., Meylan G., 2003, proceedings of 'Active Galactic Nuclei: from Central Engine to Host Galaxy', Meudon, France, July 2002, Eds. S. Collin, F. Combes and I. Shlosman, ASP Conference Series, Vol. 290, p. 491. "On-axis VLT spectroscopy of quasar host galaxies: HE 1503+0228, at z=0.135" (ADS, sorry, no abstract...)
  • Courbin F., Letawe G., Magain P., Wisotzki L., Jablonka P., Alloin D., Jahnke K., Kuhlbrodt B., Meylan G., Minniti D., 2002, The Messenger, 107, 28, "Spectroscopy of Quasar Host Galaxies at the VLT: Stellar Populations and Dynamics Down to the Central Kiloparsec" (ESO | ADS)
  • Jahnke K., Kuhlbrodt B., Örndahl E., Wisotzki L., 2002, proceedings of the workshop on 'QSO hosts and their environments', IAA, Granada, Jan 2001, Eds. I. Marquez Perez et al., Kluwer Academic Press, "QSO host galaxy star formation history from multicolour data" (ADS | astro-ph)
  • Wisotzki L., Kuhlbrodt B., Jahnke K., 2002, proceedings of the workshop on 'QSO hosts and their environments', IAA, Granada, Jan 2001, Eds. I. Marquez Perez et al., Kluwer Academic Press, "The luminosity function of QSO host galaxies" (ADS | astro-ph)
  • Kuhlbrodt B., Wisotzki L., Jahnke K., 2002, proceedings of the workshop on 'QSO hosts and their environments', IAA, Granada, Jan 2001, Eds. I. Marquez Perez et al., Kluwer Academic Press, "Two-dimensional modelling of AGN host galaxies" (ADS)
  • Wisotzki L., Jahnke K., Kuhlbrodt B., van Groningen E., Örndahl E., 2000, in: 'Stars, Gas and Dust in Galaxies: Exploring the Links', ASP Conference Proceedings, Vol. 221., Eds. Danielle Alloin, Knut Olsen, and Gaspar Galaz; "Spectroscopy and Imaging of QSO Host Galaxies" (ADS, sorry, no abstract...)
  • Jahnke K., 1998, Astronomische Gesellschaft Meeting Abstracts, September 1998; "B band photometry of a large representative sample of z<0.3 QSO host galaxies" (ADS)
Theses:
  • PhD: "Stellar populations of QSO host galaxies" (ADS | PDF)
  • Diploma: "Morphologische Eigenschaften von QSO Hostgalaxien" (german, ADS | PS gziped)
AIP kj | 12.08.2005.