README web version of /home/usg/OPS/MTS/readme_xml/readme_84063500

Principal Investigator Email Address

• pontoppi@gps.caltech.edu

Estimated Total Execution Time (hours, including overheads)

• 20

General Description

• This program aims to measure the profiles of emission lines due to water
   vapor in two protoplanetary disks, RNO90 and AS205. 
  We already know from previous Spitzer observations that strong emission lines are
   present.
  
  We ask for 4 settings for each of the two sources, two of the setting using the
   long-slit mode, and two using the cross dispersed mode. 
  Each setting targets 1-2 water lines. The lines are expected to be broad 50-100
   km/s and known (from Spitzer spectra) to have a line-to-continuum ratio of 20-50%.
   RNO90 is a 2.2 Jy source at 12 micron, which should result in a final S/N of ~15
   on the continuum. AS 205 is a ~2" binary, and we
  have aligned the slit along both components at a PA of 213 degrees. The primary
   at 12 micron is 7 Jy, so this target should
  be the easiest and we expect a final S/N of 40-50.  
  
  Given their brightness and the fact that they are all isolated objects, the acquisition
   of the targets should be straight forward. I.e., the targets will be the brightest
   10 micron source in the FOV. We apologize for providing trivial 2MASS finding charts.

Waiver Requests

• We requested two waivers for 1) the 1 hour maximum OB duration and 2)
   a wavelength setting for the long slit mode at the edge of the NeII filter. 
  Both waivers were approved.

Critical Observing Condition Constraints

• Because water has deep telluric absorption lines, the success of the program
   relies on 1) that the targets are observed at a time
  when the relative Doppler velocity shift between the atmosphere and target is high
   (for period 84, the best time is between July 20 and September 15), and 2) that
   the column of precipitable water vapor is low, ~2mm. The second criterion is of
   course difficult to
  fully estimate on the fly, so we simply ask that the observations are carried out
   during "reasonably dry" conditions.

Time-Critical Aspects

• The optimal Doppler shift for our targets span from July 20 until the
   end of their visibility window during P83.

Special Execution Requirements

• No special requests.

Special Calibration Information

• For each setting, we have provided a standard star observation. Because
   of the difficulty in finding early type stars that are bright
  enough in the mid-IR to function as telluric standards, we have chosen a Herbig
   Ae star (HD150193) with a bright, featureless, dust continuum, 
  but with no water lines (as estimated from high S/N spitzer spectra) to use as a
   standard. The upper limit on line-to-continuum ratio for the standard is at 20 times
   lower than that of the target stars. The continuum flux of HD150193 at 12 micron
   is 11 Jy.
  As usual, we ask that the standard observation is carried out immediately before
   or after
  the target observation at roughly the same airmass.

ToO Information

• This is not a ToO.

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 ?

• YES

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

• YES

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 ?

• YES

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 the provided finding chart is at a different wavelength than the observations,
 did you clearly describe in the README file how to identify the target?

• YES

Did you specify a guide star brighter than V=12mag within a field of
 r=5arcmin around the science target?

• N/A