README web version of /home/usg/OPS/MTS/readme_xml/readme_84049400

Principal Investigator Email Address

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prs15@star.le.ac.uk
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Estimated Total Execution Time (hours, including overheads)

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2.0
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General Description

We are using XSHOOTER to simultaneously take spectra of the white dwarf
 PHL5038A and its brown dwarf companion PHL5038B. 

High S/N optical spectroscopy will allow us to significantly improve our determination
 of the white dwarf's surface gravity, and hence mass and age, and additionally allow
 a determination of the white dwarf's radial velocity (from the core of the H alpha
 absorption line) to constrain the binary's kinematics. 

Near-infrared spectroscopy of the cooler brown dwarf companion will allow us to
 identify key spectral features which will improve our estimate of its spectral type
 and effective temperature, and we begin to investigate its atmospheric composition
 and structure. This is essential if the object is to be used as a benchmark in the
 study of brown dwarf atmospheres in the L/T transition phase.

Waiver Requests

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No Waiver Request was submitted
```

Critical Observing Condition Constraints

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N/A
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Time-Critical Aspects

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N/A
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Special Execution Requirements

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N/A
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Special Calibration Information

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N/A
```

ToO Information

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N/A
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ToO Activators List

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N/A
```

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

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 ?

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N/A
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Have you specified the S/N ratio at given wavelength in the User Comments field of each OB?

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

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

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

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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 ?

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N/A
```

Last creation of page: Tue Oct 6 15:40:31 2009
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