README web version of /home/usg/OPS/MTS/readme_xml/readme_81091400

Principal Investigator Email Address

```
rochau@mpia.de
```

Estimated Total Execution Time (hours, including overheads)

```
3:56:20
```

General Description

Our programme with the ID 381.D-0914(A) is dedicated to the high-mass
 stellar content of the NGC 3603 giant HII region. Multi-object spectroscopy with
 VLT-FLAMES allows classify the high-mass stellar members of NGC 3603, to identify
 binary or multiple systems and to obtain accurate radial velocities. The latter
 will also reveal the velocity dispersion and shed light on the internal dynamics.
 The high-mass candidates will be observed with FLAMES/GIRAFFE in the MEDUSA mode
 and UVES will be used to observe the ringlike structures around Sher 25 to derive
 its geometrical distance (see also 'Waiver Requests' of the Readme file).

Waiver Requests

We submitted a waiver request to ESO on 01/31/08 which has been assigned
 with the WaiverID 381.D-0914A.01. It was approved on 02/01/08.
We asked for the additional use of UVES, together with the approved use of VLT-FLAMES.
 UVES opens the possibility to obtain high resolution spectra of the ringlike structure
 around the B1.5 Iab supergiant Sher 25, a member of the NGC 3603 YC. This allows
 to measure accurate radial velocities which combined with high precision astrometric
 HST observations will yield the expansion parallax, and hence a geometrical distance
 to Sher 25 and the entire NGC 3603 Giant HII region.

Critical Observing Condition Constraints

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N/A
```

Time-Critical Aspects

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N/A
```

Special Execution Requirements

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N/A
```

Special Calibration Information

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N/A
```

ToO Information

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N/A
```

ToO Activators List

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N/A
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

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N/A
```

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 ?

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 ?

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
```

Did you specify in your OBs the hour angle range for which your Target Setup files are valid ?

Did you specify in your OBs the magnitudes of FACBs and Guide Star for all your fields ?

Are the FACBs and Guide Star in the brightness ranges specified in the FLAMES manual ?

Did you enter the expected signal to noise in your OBs ?

Last creation of page: Tue Oct 6 15:40:25 2009
If you have comments, please contact usd-help@eso.org