The Thüringer Landessternwarte Tautenburg
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Transcript of The Thüringer Landessternwarte Tautenburg
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The Thüringer Landessternwarte Tautenburg
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Thüringer Landessternwarte TautenburgPersonnel
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 Electronics2 Mechanical workshop
Wild pigs, deer, foxes, and ticks
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Thüringer Landessternwarte Tautenburg
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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, …
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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
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Instrumentation of the Alfred-Jensch 2m Telescope
Schmidt Camera:
• Objective Prism (R~50)
• 50 x 50 arcmin FOV (0.7´´ per pixel)
• 3.3o x 3.3o with photographic plates
• ca. 10000 plates since 1960• CCD Camera installed in 1996
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Instrumentation of the Alfred-Jensch 2m Telescope
Naysmyth Faint Object Spectrograph:
• 3500-10000 A
• Installed in 2001
• SITe 1024x800 CCD (0.53´´/pixel)• 5 grisms (100 to 230 A/mm)
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Instrumentation of the Alfred-Jensch 2m Telescope
Coude Echelle Spectrograph:
• iodine absorption cell for precise radial velocity measurements
• Installed in 1995
• R=67.000• grism crossed dispersed: 3400-9270 Ang.
Key Program: Radial Velocity Search for Extrasolar Planets
Tautenburg Observatory Planet Search Program
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Thüringer Landessternwarte TautenburgArtie 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)
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Iodine cell
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HD 13189: The First Tautenburg Planet
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Period 471 ± 6 d
RV Amplitude 173 ± 10 m/s
e 0.27 ± 0.06
a 1.8 AU
Msin i 13 MJupiter
The Planet
M = 3.5 Msun
[Fe/H] = –0.58
K2 II-III
The Star
Schuler et al. (2005)
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Gem
CFHT McDonald 2.1m
McDonald 2.7m TLS
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Sp.T. = F4 M* = 1.4 Solar Masses
m sin i = 13 MJupiter
Period = 328 d
a = 1.06 AU
e = 0.15
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M* = 1.2 Solar Mass K giantm sin i = 6.6 MJupiter
Period = 266 d
a = 0.86 AU
e = 0.45
Döllinger Ph.D. work:
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Orbiting star M5 VRadius [Rsun] 0.35
Mass [Msun] 0.22
TOPS Program: Transit Confirmation
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Thüringer Landessternwarte Tautenburg Jochen EislöffelHolger VossPhilipp EigmüllerRV Team for follow-up
The Team: Transit Searches
DLR (BEST collaboration)Heike RauerAnders Erikson
CoRoT German Team:Martin PätzoldLudmilla CaroneGünther Wuchterl+ DLR Team
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The Tautenburg Exoplanet Search Telescope
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BEST @TLS TEST
FoV 3.1o × 3.1o 2.2o × 2.2o
Plate scale/pixel 5.5´´ 1.9´´
Magnitude for 1% photometry
13.5 – 14.0 14.8 (R filter 4m exp.)
CCD 20482, 14m 40962, 9m
Aperture 20 cm 30 cm
Type Schmidt Schmidt
Filters None BVRI (planned)
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TEST first light Nov 2005…
…but problems with mount and guiding
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BEST: 240 sec exposure
TEST: 30 sec exposure
13.7
13.4
1% photometry down to ~15 mag
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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
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TLS Contributions to NAHUAL
Money:
• Best to spread costs over several budget years
• 80.000 – 100.000 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