README web version of /home/usg/OPS/MTS/readme_xml/readme_83059500
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Integral field spectroscopy of three sub-stellar companions previously
detected around
T Tauri stars:
A K=10.7 mag companion 4.2" southeast of HR 7329 (R=5mag;K=5mag)
and
a K=15.5 mag companion 1.3" southwest of CHXR 73 (R=18.4mag;K=10.7mag)
and
a K=15.1 mag companion 4.6" southeast of UScoCTIO 108 (R=17.7mag;K=12.5mag)
For the first target AO works nicely, for the other two we have to use noAO mode.
Integral field spectroscopy to get a more precise estimate of their properties as
e.g. temperature and extinction by comparison of their spectra and properties to
atmospheric and theoretical models, respectively.
And to begin afterwards establishing an empiric log g sequence from young sub-stellar
companions to T Tauri stars.
If easily available, we would prefer an early type star (e.g. B star) as telluric
standard star. Thank you.
Position Angles of -101.2, -35.1 and -93 are used for the companions of HR 7329,
CHXR 73 and UScoCTIO108, respectively, to get the finer sampling for the connection
line between primary and companion to be able to remove the background in the best
way.
OB names R (NGS) target separation mode comments
---------------------------------------------------------------------------------------
HR7329 5.0 K=10.7 4.2 arcseconds AO 100 mas H+K PA =
-101.2
CHXR73 -- (18.4) K=15.5 1.3 arcseconds AO 25 mas H+K PA =
-35.1
UScoCTIO108J -- (17.7) K=15.1 4.6 arcseconds AO 100 mas J PA =
-93
UScoCTIO108HK -- (17.7) K=15.1 4.6 arcseconds AO 100 mas H+K PA =
-93
The NGSs and the targets are not brighter than 5th magnitude in the NIR.
Waiver Requests
Via a setup change request it was approved,
that we can use J-, H-, K-band separately for HR 7329,
but after careful inspection we decided to do it
in J, H+K mode as originally intended
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
Special Calibration Information
ToO Information
ToO Activators List
Is this a Pre-imaging run ?
Pre-imaging Requirements
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
Category for each Observing Template ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
Did you indicate the magnitude of the brightest object in the field in
each SINFONI OB?
If you are using the AO: Did you indicate for every OB the magnitude
of the guide star, and its distance to the target (if any)?
If you submitted OBs for standard stars, did you use the provided StandardStar
templates?
If you are using a specific offset pattern or position angle: did you
check carefully the definition in the manual?
Did you make really sure that none of your OBs ever saturates the detector?
If you are using the AO: did you enter the correct Strehl Ratio (on-axis,
K-band) AND the seeing value in the constraint set?
Last creation of page: Tue Oct 6 15:40:30 2009
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