Donnerstag, 10. April 2014

Notes on the "shallow" JWST NIRSPEC survey of 9000 galaxies

Goal: mini-SDSS at z~2-4
Science case: Arjen's ESO large proposal, but now at z~2-4

2 settings R~1000 & R~1000
S/N goal per resolution element 20

Basic targeting m_AB(integrated, @H or IRAC3.6)<24.5; z>2
[and add the ones that are IRAC-only detections…]

according to Tracy Beck: we get ~150 galaxies per MSA setting [CHECK using APT]

thought: 1x 1000 sec @ 1MSA (or 2x500 sec dithered with 2 slits; is that needed)

thought 36 pointings   --> 36x150 galaxies --> 5500 galaxies

Field:  from CANDELS with ALMA access; 2 different fields;
   within a field, contiguous.

  what are the overhead advantages and cosmic variance drawbacks of different
   MSA settings at identical pointing

To be done: what is the S/N distribution, given actual CANDELS size/slitloss parameters.
 any orient constraints: major axis.

Draft needs to be done by May 9


Keine Kommentare:

Kommentar veröffentlichen