README web version of /home/usg/OPS/MTS/readme_xml/readme_60942200

Principal Investigator Email Address

• tsamis@iaa.es

Estimated Total Execution Time (hours, including overheads)

• 3.0

General Description

• We wish to obtain IFU spectroscopy of 2 protoplanetary disks embedded
  in HII regions: 1 proplyd found in M42 and 1 proplyd found in M8. These are
  semi-ionized emission line condensations. We would be happy if, primarily, the
  faint [0.001 of F(Hbeta)] recombination lines of CII 4267.15-A, OII 4649.13-A
  were detected at an adequate S/N ratio. These and numerous other optical and
  far-red recombination lines of OI, OII, NI, NII ions covered by the X-shooter
  range are important diagnostics of the physical conditions in dense ionized
  microstructures such as proplyds, independent of the well-known strong
  forbidden lines [OII]3727, [OIII]5007, [NII] 6584-A etc.
  
  The proplyd in M42 (LV2)
  ======================
  
  1 finding chart is provided: HST WFPC2 Halpha image, approx 5 by 4 arcmin. A
  blind offset northeast from the reference star theta 1 Ori C is to be taken.
  One 1 hr OB is requested in an "OSO" pattern. The background "S" position due
  northwest of the target is requested to allow subtraction of the foreground HII
  region spectrum. We have software to correct for diff atmospheric refraction
  effects, but we request a low airmass <= 1.2 so that we don't lose too much
  light falling out of the field. PA = +20 deg to get the tail of the proplyd in the
   field.
  
  The proplyd in M8
  ======================
  
  1 finding charts is provided: a VLT NACO 2.18 um continuum image (approx 0.5 by
  0.5 arcmin). A blind offset is needed southeast from the reference star
  Herschel 36 (V ~ 9, spectral type: O7V). The generic IFU offset template should
  be used. Two OBs of 1 hr each are requested in an "OSO" pattern. The background
  "S" position due northeast of the "O" position is requested to allow
  subtraction of the HII region spectrum. We have software to correct diff
  atmospheric refraction effects, but we request a low airmass <= 1.2 so that we
  don't lose too much light. PA = +125 deg to get the tail of the proplyd in the
  field as well.
  
  Observations of one telluric standard per OB and one spectrophotometric
  standard per night are requested.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• airmass <= 1.2
  seeing 0.8"
  moon illum 0.3

Time-Critical Aspects

• n/a

Special Execution Requirements

• n/a

Special Calibration Information

• n/a

ToO Information

• n/a

ToO Activators List

• n/a

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

• YES

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

• 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