The Thüringer Landessternwarte Tautenburg. Thüringer Landessternwarte Tautenburg Personnel 1 Director 7 Permanent Scientists 2 Postdoc Scientists (Chretian,

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Presentation transcript:

The Thüringer Landessternwarte Tautenburg

Thüringer Landessternwarte Tautenburg Personnel 1 Director 7 Permanent Scientists 2 Postdoc Scientists (Chretian, EU RTN) 6 Ph.D. Students (DFG, DLR) 3 Diploma students 3 Telescope support (1 is optical designer) 3 Administration + house keepers, gardner, maintenance 2 Computer administrators/programers 2 Electronics 2 Mechanical workshop Wild pigs, deer, foxes, and ticks

Thüringer Landessternwarte Tautenburg

TLS: An International Institute Postdocs: Uzbekistan (Chretian Grant), Italy (EU RTN) Ph.D. Students: Brasil, Croatia, Italy, Spain, Ukraine,Venezuela, … Scientific Visitors: Canada, Egypt, Georgia, Italy, Ireland, USA, S. Korea, Ukraine, …

Research Activities of TLS Star formation, jets and outflows Extrasolar planets and Brown Dwarfs Magnetic activity on stars Stellar oscillations Gamma Ray Bursts Quasars and active galaxies => Small institute, yet diverse

Instrumentation of the Alfred- Jensch 2m Telescope Schmidt Camera: Objective Prism (R~50) 50 x 50 arcmin FOV (0.7´´ per pixel) 3.3 o x 3.3 o with photographic plates ca plates since 1960 CCD Camera installed in 1996

Instrumentation of the Alfred- Jensch 2m Telescope Naysmyth Faint Object Spectrograph: A Installed in 2001 SITe 1024x800 CCD (0.53´´/pixel) 5 grisms (100 to 230 A/mm)

Instrumentation of the Alfred- Jensch 2m Telescope Coude Echelle Spectrograph: iodine absorption cell for precise radial velocity measurements Installed in 1995 R= grism crossed dispersed: Ang. Key Program: Radial Velocity Search for Extrasolar Planets Tautenburg Observatory Planet Search Program

Thüringer Landessternwarte Tautenburg Artie Hatzes Eike Guenther (young stars, brown dwarfs) Massimiliano Esposito (young stars) Michael Hartmann (metal rich stars, A-type stars) The Team: Radial Velocity Searches ESO Michaela Döllinger (K giant planets and oscillations) Collaborators: Bill Cochran, Mike Endl, Barbara McArthur, Fritz Benedict (McDonald Observatory) – (M dwarf program with Endl) Martin Kürster (MPIA) David Mkrtichian (ARCSEC) Johny Setiawan (MPIA Heidelberg)

Iodine cell

HD 13189: The First Tautenburg Planet

Period471 ± 6 d RV Amplitude173 ± 10 m/s e0.27 ± 0.06 a1.8 AU Msin i13 M Jupiter The Planet M = 3.5 M sun [Fe/H] = –0.58 K2 II-III The Star Schuler et al. (2005)

 Gem CFHTMcDonald 2.1m McDonald 2.7mTLS

Sp.T. = F4 M * = 1.4 Solar Masses m sin i = 13 M Jupiter Period = 328 d a = 1.06 AU e = 0.15

M * = 1.2 Solar Mass K giant m sin i = 6.6 M Jupiter Period = 266 d a = 0.86 AU e = 0.45 Döllinger Ph.D. work:

Orbiting starM5 V Radius [R sun ]0.35 Mass [M sun ]0.22 TOPS Program : Transit Confirmation

Thüringer Landessternwarte Tautenburg Jochen Eislöffel Holger Voss Philipp Eigmüller RV Team for follow-up The Team: Transit Searches DLR (BEST collaboration) Heike Rauer Anders Erikson CoRoT German Team: Martin Pätzold Ludmilla Carone Günther Wuchterl + DLR Team

The Tautenburg Exoplanet Search Telescope

FoV3.1 o × 3.1 o 2.2 o × 2.2 o Plate scale/pixel5.5´´1.9´´ Magnitude for 1% photometry 13.5 – (R filter 4m exp.) CCD , 14  m4096 2, 9  m Aperture20 cm30 cm TypeSchmidt FiltersNoneBVRI (planned)

TEST first light Nov 2005… …but problems with mount and guiding

BEST: 240 sec exposure TEST: 30 sec exposure % photometry down to ~15 mag

TLS Contributions to NAHUAL Person Power: Expertise in absorption cell Small workshop that is overstretched → small parts CAD work possible Limited Electronics/Computer support Science contributions

TLS Contributions to NAHUAL Money: Best to spread costs over several budget years – in 2007 Budget 2008/2009 Budget will be prepared early next year Money has to be spent in a given budget year. Transfer to next year possible but difficult Specific items need to be identified and bids made Memorandum of Understanding important