README web version of /home/usg/OPS/MTS/readme_xml/readme_82031100

Principal Investigator Email Address

```
rmennick@astro-udec.cl
```

Estimated Total Execution Time (hours, including overheads)

```
10
```

General Description

We plan to study the nature of the blue star LMC_SC9-127519, showing two
 resonant photometric periodicities with period ratio 3/2. For that we plan to obtain
 10 regularly spaced OBs spanning the whole supercycle of 10.73 days. The spectral
 range covered is the optical one (dichroic mode), and we will use 2x2 binning to
 increase the S/N. We plan to identify spectral lines, measure radial velocities,
 and make the spectral analysis of the wavelength calibrated spectra. We require
 well sampled data, so we give time critical conditions in the corresponding tab
 and in the annexed ephemeris.eph file.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
NA
```

Time-Critical Aspects

OBs should satisfy ephemeris given in file ephemeris.eph. For instance,
 OB named "BI 108 - Phase 0.8" should be observed at the dates corresponding to superphase
 0.8, which are given in the ephemeris file.

Special Execution Requirements

```
See time critical tag
```

Special Calibration Information

```
NA
```

ToO Information

```
NA
```

ToO Activators List

```
NA
```

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

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

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?

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
```

Last creation of page: Tue Oct 6 15:40:26 2009
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