README web version of /home/usg/OPS/MTS/readme_xml/readme_79008500

Principal Investigator Email Address

• Boris.Gaensicke@warwick.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 4h

General Description

• This UVES program aims at a high-resolution study of the white dwarf SDSS1228+1040,
   which has
  a circumstellar disc of metal rich material. We have detected in intermediate resolution
   spectroscopy Mg 4481 in absorption in the WD atmosphere, and CaII 8500-8650A in
   emission. 
  
  Here we want (a) to obtain high resolution, high S/N spectra of those features,
   (b) probe for additional absorption/emission lines, and (c) to test for variability
   of the already known Mg and Ca lines on time scales of months. 
  
  For purpose (b), we have defined one OB, SDSS1228_UVES_EXT with the bluest grating
   to extend the existing spectroscopy as far into the blue as possible. This OB can
   be executed at any time in P79. 
  
  For purpose (c), we have defined OBs SDSS1228_UVES_1 to _3, with time constraints
   to be done in April, May, and June, respectively. The exact timing is not critical,
   we would just like to get those three spectra spanning the maximum possible temporal
   baseline in P79. It would be beneficiual for the program if it could be started
   before the official begin of P79, e.g. in March, to spread out those three OBs over
   a period of 4 months.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• N/A

Time-Critical Aspects

• We have defined OBs SDSS1228_UVES_1 to _3, with time constraints to be
   done in April, May, and June, respectively. The exact timing is not critical, we
   would just like to get those three spectra spanning the maximum possible temporal
   baseline in P79. It would be beneficial for the program if it could be started before
   the official begin of P79, e.g. in March, to spread out those three OBs over a period
   of 4 months.

Special Execution Requirements

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Special Calibration Information

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ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

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

If you need secondary guiding, are there suitable objects within 30 arcsec
 from your target ?

• N/A