-- AlastairEdge - 08 Jul 2005

This page is to update you on DXS SV analysis and results

The first WFCAM campaign has just ended and the first of the SV data should be entering the WFCAM Survey Archive in the next few weeks so I want to make sure you all know the state-of-play with the DXS observations:

In the SV period (DXS_SV) in late-April we got the following observed:

Lockman Hole field 1 (centred on SHADES)

1 accepted MSB in K nothing in J

Elais N1 field 1 (core of the SWIRE area)

8 accepted MSBs in K (plus 2 failed attempts) 4 accepted MSBs in J

field 2

3 accepted MSBs in K

In the first period (refered to as DXS1) in May and June we observed the following:

Lockman Hole field 1 (centred on SHADES)

7 accepted MSBs in K (plus 3-4 failed attempts) nothing in J

field 6 (covering most of the deep Owen VLA field)

2 accepted MSBs in K nothing in J

Elais N1 field 1 (core of the SWIRE area)

11 accepted MSBs in K 7 accepted MSBs in J

field 2

2 accepted MSBs in K

fields 3-6

1 accepted MSB in K

SA22 field 1 (centred on Stiedel LBG field and VVDS22)

9 accepted MSBs in K 1 accepted MSB in J

So in total we have (hopefully...):

Lockman F1 - 80 mins in K (exposure per pixel in full 52'x52' tile) F6 - 20 mins in K

Elais N1 F1 - 190 mins in K and 110 mins in J N1 F2 - 50 mins in K N1 F3-6 - 10 mins in K

SA22 F1 - 90 mins in K and 10 mins in J

so ~3sq.deg. to K~20.5 ~8sq.deg. to K~19 ~1sq.deg. to J~22

This should be enough to assess how deep we get and what strategy to take for 05B.

My zeroth order science goals will be to determine K-band counts to K~19-20 over the ~8 or ~3 sq.deg. covered so far and ERO (R/i-K>4-5) counts in the sub-area covered to sufficient depth in the optical. There will be plenty of SWIRE-related opportunities in Lockman and Elais N1 with opportunities for 8m follow-up in 06A.

We should consider a DXS-related workshop to pool experience once relevent data get out. The WFCAM data archive requires you to have an account (administered by one coordinator at each institute - it might be you!) so you might want to set this up now. In Durham we have two PhD^? students and a new dedicated WFCAM analysis box (Dual-Opteron, big memory, big RAID, etc) so we should be able to easily co-add the CASU pipeline images from each MSB. These data will be available to WG members as soon as we convince ourselves they are kosher. Please think about setting aside some time in July/August to dig into the data and when you might be able to meet up (early September?).