README web version of /home/usg/OPS/MTS/readme_xml/readme_78043800

Principal Investigator Email Address

• sirianni@stsci.edu

Estimated Total Execution Time (hours, including overheads)

• 4 hours 10 minutes and 29 seconds

General Description

• The main goal of this proposal is to study four very young star clusters,
   still associated to bright HII regions, in the Small Magellanic Cloud. The saudy
   of the selected cluster will allow us to better investigate the role of massive
   stars in the formation of low mass stars in low metallicity and low dust environments.
  Two of the selected young clusters (NGC 371 and NGC 395-target of this section of
   the proposal) are located NE to NGC 346. Many SNR are present in the region. Arcs
   and filaments of HII seam to connect these three clusters, and they can be an example
   of a SSPSF process.
  Between NGC 346 and NGC 602 there is the HII complex N83-N84-N85. This complex hosts
   two very young clusters: NGC 460 and NGC 456. The region appears as an outstanding
   prototype of sequential start formation on a scale of 10^7 years in about 500 pc.
   It contains several CO clouds, and expanding molecular shells coincident with either
   the clusters and the SNRs. The shell of gas appear to be interacting with the nearby
   molecular clouds, sweeping and compressing important mass of molecular hydrogen,
   and perhaprs setting up a second generation of stars.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• One of the main goal of this proposal is to resolve pre-MS stars, in crouded
   regions. For this reason seeing better than 0.8 and airmass better then 2.2 are
   requested.
  Photometric sky transparency and no moon are also request.

Time-Critical Aspects

• none

Special Execution Requirements

• none

Special Calibration Information

• none

ToO Information

• none

ToO Activators List

• ---(Empty)---

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 ?

• YES

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

If you have prepared your finding charts with tools other than FIMS,
 do they comply with the specifications on the FORS1 Phase 2 web page ?

• YES