README web version of /home/usg/OPS/MTS/readme_xml/readme_76035601

Principal Investigator Email Address

• swolf@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 2

General Description

• MIDI observation of the dusty, discoidal environment of 1 TTauri star
   and 1 HerbigAe star. This run B consists of 5 OBs, 2 for targets, 3 for calibrators.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• It is mandatory to schedule the observations in such a way that the targets
   are not closer than 15 degree to the moon.

Time-Critical Aspects

• If procurable the chosen baseline UT2-UT4 should be parallel to the putative
   disk orientation of each scientific target. As the disk orientation is not known,
   we assume a coplanar alignment of disk and companion (both scientific targets are
   binaries).
  See Fabricius & Makarov (2000, A&A, 356, 141) for the alignment of the companion
   star:
  HD113766: PA=280.6degree
  HD72106: PA=199.9 degree

Special Execution Requirements

• The scientific target HD113766 is a binary with a separation of 1.32''.
   The position angle of the companion is 280.6degree from North to East. Meyer et
   al. (2001, A&AS, 199, 7608) remark that the (infrared) excess flux originates
   from the primary star. The companion has a visible brightness of V=8.311. Resolved
   infrared magnitudes of the primary and companion are not known. The scientific target
   HD72106 is a binary, too, with a separation of 0.78''. The position angle of the
   comapanion is 199.9degree from North to East. The companion is slightly fainter
   in the visible regime: V=8.632mag. We also have UVES data of HD72106, where the
   companion is not visible, at all. Resolved infrared magnitudes of the primary and
   companion are not known.
  For both scientific targets MIDI shall observe the infrared brighter component.

Special Calibration Information

• The calibrators were chosen because of their proximity to the scientific
   targets. For the scientific target HD113766 we recommend the observation of an alternative
   calibrator (separation:3.12 degree) as the calibrator that we get from the CalVin
   list has a separation of 14.5degree.  
  Calibrator for HD113766 is 
  HD123139: V=2.06, F12um=56.86Jy, spect. type: K0 III, separation: 14.5degree, from
   CalVin
  Alternative for HD113766 is
  HD112213: V=5.746, F12um=15.4Jy, spect. type: M0 III, separation; 3.12degree. The
   apparent angular diameter is approximately (2.95+-0.018)mas according to the MIDI-calibrator
   list B.Stecklum et al.
  Calibrator for HD72106 is 
  HD60142: V=4.432, F12um=8.72, spect.type=Mo III, separation: 3.5degree, from CalVin.
  Of course, the Paranal Science Operation Team should have the right to exchange
   these suggested calibrators if it is necessary.

ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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Source(s) of Pre-imaging

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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 ?

• YES

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

Did you indicate for each science star OB the corresponding calibrator
 star OB (and vice versa) in the 'Instrument Comments' field ?

• YES

If you use calibrator stars which are not in the CalVin database, did
 you specify their characteristics in the README file and in the OBs ?

• YES