README web version of /home/usg/OPS/MTS/readme_xml/readme_79089800

Principal Investigator Email Address

• gcahuvin@eso.org

Estimated Total Execution Time (hours, including overheads)

• 4.0

General Description

• The purpose of this program is to measure the radial velocity of the close
   (100mas) binary TWA22AB (V=13.8 and R=12.2).  Depending on the activity and the
   rotation of each component that will reduce our RV precision, we hope to resolve
   (in terms of RV) both spectra in order to start monitoring the radial velocities
   of each component (SB2 binary).
  
  The amplitude of both component is expected to be significant (~10 km.s-1). To monitor
   the stellar rotation and the stellar activity of each component, we propose to observe
   TWA22AB with a good precision (~15 m.s-1) on 4 different timescales: 3 measurements
   spaced of a few hours the first night, the repeated ~1 night later, ~1 week later
   and finally ~1 month later. For this reason, we have 3 OBs to be repeated at 4 different
   epochs (nights):
  1- TWA22_1ep_A, B, C (spaced of few hours, 1st night)
  2- TWA22_2ep_A, B, C (spaced of few hours, ~1 night later)
  3- TWA22_3ep_A, B, C (spaced of few hours, ~1 week later)
  4- TWA22_4ep_A, B, C (spaced of few hours, ~1 month later)
  
  (The standard 416Hz, 1, high detector mode is used)
  Thanks,
  In case of problem please contact gchauvin@eso.org

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• none

Time-Critical Aspects

• We propose to observe TWA22AB with a good precision (~15 m.s-1) on 4 different
   timescales: 3 measurements spaced of a few hours the first night, the repeated ~1
   night later, ~1 week later and finally ~1 month later. For this reason, we have
   3 OBs to be repeated at 4 different epochs (nights)

Special Execution Requirements

• none

Special Calibration Information

• none

ToO Information

• none

ToO Activators List

• none

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• none

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• ---(Empty)---

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• N/A

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

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

• N/A

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

• N/A

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A