README web version of /home/usg/OPS/MTS/readme_xml/readme_80018800

Principal Investigator Email Address

• guenther@tls-tautenburg.de

Estimated Total Execution Time (hours, including overheads)

• 10

General Description

• The aim of the project is to detect planets of young stars. The observing
   strategy thus is similar to other planet search programs on UVES with the iodine
   cell.
  That is: For each star ONE spectrum should be taken WITHOUT the N2O cell (template),
   and as MANY spectra as possible with the N2O cell (RV-measurements). 
  It is not important when the template spectrum is taken, it can be taken directly
   before, or after a spectrum with the cell, or in any other night. The orbital period
   of the 
  planet of the most important target TWA7 is 5.05 days. The RV-measurements (spectra
   with the cell) can be taken in consecutive nights or any other separation as the
   data
  will be phase-folded. Several RV-measurements of the same star in the same night
   are not useful. The orbital period 
  
  In order to remove the telluric lines, there is an OB for of a hot star for each
   OB of a target star.
  OB:         purpose
  TWA7        template (only one OB needed)
  TWA7_Cell   RV-measurements 
  CAL_TWA7    telluric reference star, to be taken before, or after TWA7, or TWA7_Cell
  
  ..same for HD140637.
  
  
  All stars are bright and can be used as NGS. 
  Slit direction: ELEV (the objects are point sources, unresolved stars).
  
  
  TWA7 is far more important that HD140637.  It is thus more important to obtain the
   template and at least 3 RV-measurements 
  of this star, rather than taking a few spectra of both stars.

Waiver Requests

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Critical Observing Condition Constraints

• All stars in this program are very bright. Thus, the observations can
   be carried out under almost any
  observing conditions as long, as the AO-loop can be closed. This program may serve
   as a bad seeing backup program.

Time-Critical Aspects

• not time critical. RV-measurements of the same star can be taken in consecutive
   nights, or any large spacing. The template can be taken at any time.

Special Execution Requirements

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Special Calibration Information

• standard calibrations are fine

ToO Information

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ToO Activators List

• ---(Empty)---

Do the README file and the instrument comments of the telluric stars
 OBs include the required S/N/pixel of the spectrum of the telluric star, its spectral
 type and allowed spectral range?

• YES

Do any OBs include wavelength or flatfield calibrations?

• NO

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If the slit viewer guide star is different from the target, are the RA
 and DEC offsets accurate to within 0.05 arcsec and do they take into account the
 relative proper motion between the two objects?

• N/A

If you have preferences which OBs should be executed first for objects
 at similar RA, did you make use of the User Priority field in the OBs?

• YES