README web version of /home/usg/OPS/MTS/readme_xml/readme_81040101

Principal Investigator Email Address

• chaty@cea.fr

Estimated Total Execution Time (hours, including overheads)

• 2h07

General Description

• This programme is a Target of Opportunity aimed at promptly observe the
   high-energy sources after their discovery or accurate localisation.
  
  * Optical photometry will allow us to find the counterpart, confirm it by variability
   and/or unusual colors, and build a Spectral Energy Distribution which will allow
   us to understand the accretion and ejection phenomena occuring in this source.
  * Spectroscopy will allow us to look for lines in these sources, to try to constrain
   the nature of the object, because these lines will come either from the accretion
   disc or from the companion star.
  * Rapid photometry observations are meant to look for variability at the second
   to minute timescale in the accretion disc, and/or to find whether non-thermal processes
   are present. If it is the case, such variability might be different in optical and
   NIR (see e.g. XTE J1118+480, Hynes et al. 2003, MNRAS, 345, 292).
  
  Since we would like to look for photometric/spectral variability of the source,
   we ask for two epochs of observation separated by one week, and in coordination
   with our other involved instruments.

Waiver Requests

• No Waiver Request

Critical Observing Condition Constraints

• There is no critical observing condition constraint, since this is a ToO
   programme, where timely observations are more important than observing conditions.

Time-Critical Aspects

• Prompt observations are required since these sources can be very variable
   (X-ray binary systems are transient sources).

Special Execution Requirements

• None.

Special Calibration Information

• Calibration plan is enough for imaging and spectroscopy.

ToO Information

• This programme will be triggered every time a new source is discovered
   or an accurate position becomes available (e.g. thanks to radio
  observations). We will try to coordinate these ToO observations to other instruments
   as the INTEGRAL telescope, XTE, VLA, INT and other instruments/telescopes.

ToO Activators List

• Sylvain CHATY

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• None

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 ?

• N/A

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 ?

• 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