README web version of /home/usg/OPS/MTS/readme_xml/readme_77085700
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
In this project we want to study the outflow activity around UCHII regions.
We have selected our candidates based on a snapshot survey performed with the NTT.
We find knotty or bow-like features in the images obtained with the NB_H2_S1 filter,
indicating the presence of jets or outflows. Molecular hydrogen emission can be
produced by collisional excitation (shocks) or by radiative excitation (fluorescence).
Our strategy is to obtain line ratios of ro-vibrational linesin the K and H band
and compare them with the models to discriminate between these mechanisms.
Especially important are the lines:
1-0 S(0) 2.2235
1-0 S(1) 2.1218
1-0 S(2) 2.0338
2-1 S(1) 2.2477
2-1 S(2) 2.1542
2-1 S(3) 2.073
1-0 Q(1) 2.4066
1-0 Q(2) 2.4134
1-0 Q(3) 2.4237
3-2 S(2) 2.2870
[FeII] 1.644
[FeII] 1.81
The calibration of the telluric absorption is critical for this program, so ideally,
a difference in airmass of less than 0.02 should be achieved. Therefore, the sequence
of observations of the telluric standards is detailed in each observing block.
In our finding charts, the science objects in which we are interested are indicated
with a MAGENTA ARROW.
Waiver Requests
A waiver is needed to perform the observations of each object in sequence.
The sequence for calibration is calculated according to this constraint. Even if
the individual OB are less than one hour, it is needed that the ones containing
in the name the expressions: block or slit are done sequentially with their respective
telluric standards.
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
In the case of IRAS17175, the slit_1 position should be done before the
slit_2 position.
Most of our slit positions in the finding charts are simply centred on the science
object. We assume that they will be brought to the centre, and offset by NOD.THROW/2,
in other cases, we have placed the slit in the A position directly in the finding
charts. In any case, we have clearly indicated the interesting targets with MAGENTA
ARROWS in our finding charts.
see waiver requests
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 ?
Last creation of page: Tue Oct 6 15:40:14 2009
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