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Two fiber-fed high-resolution echelle spektro- graphs at the Calar Alto 3.5 m telescope

CARMENES project utilizes high-resolution fiber-fed echelle spectrographs at Calar Alto 3.5 m telescope to discover 50-100 low-mass planets orbiting late M stars. The consortium, comprising institutions from Germany and Spain, aims to conduct a survey of approximately 300 M stars over a 3-year period. The instrument, timeline, milestones, and science objectives are detailed, emphasizing the quest to fill the science gap and detect planets in the habitable zone.

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Two fiber-fed high-resolution echelle spektro- graphs at the Calar Alto 3.5 m telescope

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  1. Summary Two fiber-fed high-resolution echelle spektro- graphs at the Calar Alto 3.5 m telescope (R=82000) to find ~ 50-100 low-mass planets around ~300 late M stars Start: ~ 6/2015

  2. CARMENES, the consortium MPIA (Heidelberg) IAA (Granada) LSW (Heidelberg) ICE (Barcelona) IAG (Göttingen) IAC (Tenerife) TLS (Tautenburg) UCM (Madrid) HS (Hamburg) CAB (Madrid) CAHA (50% MPG + 50% CSIC) Germany + Spain ≥ 5.0 MEUR (hardware)

  3. CARMENES, the instrument

  4. Science Science gap to be be filled by CARMENES known planets by Aug. 2012 August 2012

  5. Low-mass planets in the habitable zone Aim: Survey about 300 M stars -- 60 observations/star -- 18 000 measurements = 6000 h observing time = 3 years on Calar Alto 50-100 new planets are expected Many of them in the habitable zone

  6. Which wavelength region provides the highes RV precision?

  7. t r t Let’s Talk About i j e UVES (visual) NIRSPEC (NIR) Martin et al. 2006 RV curve of the active M9 dwarf LP-944 20

  8. InstrumentOverview Front-End ICS + ICE GUI Scheduler Pipeline Cooling System Vac.pumps Sensors MCE Scrambler Scrambler XPM XPM CalUnit VIS Spectrograph 285 K NIR Spectrograph 140 K

  9. Optical bench, detector cryostat and vacuum tank

  10. NIR spectrograph 140 K radiation shield detector feed through gas preparation unit

  11. MPIA contribution

  12. Detector mosaic of two HAWAII-2RG detecors 2 x 2048x2048 pixel delivered May 2013 to MPIA everything within specifications

  13. Time constraints: -- Survey has to finish at 31.12.2018 because CSIC-MPG contract ends at this date and will not be extended -- Survey has to start at 1.1.2016, otherwise it will be stopped Milestones: Sept. 2014: Detector cryostat will be delivered to IAA in Granada for integration into the NIR channel Jan. 2015 NIR channel pre-shipping acceptance review IAA Jan. 2015 NIR channel shipping to Calar Alto June 2015 CARMENES final acceptance review of complete system July 2015 Start of operation Time constraints, time plan, milestones etc

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