Added orientation constraints on A1-3 & W1-3 to avoid potential diffraction and bleed issues from bright stars.
John Graham
Hi,
Please find attached an updated phase II for 11840. This shuold now fully allocate all 10 oribts initally awarded.
Many thanks!
Andrew Levan
----- Attempting Submission 1 (Wed Oct 29 17:16:52 GMT 2008) -----
----- Attempting Submission 2 (Wed Jul 08 16:12:37 GMT 2009) -----
----- Attempting Submission 3 (Wed Aug 05 23:08:22 GMT 2009) -----
----- Attempting Submission 4 (Fri Jul 09 17:36:26 GMT 2010) -----
Identifying the host galaxies for optically dark gamma-ray bursts
We propose to use the high spatial resolution of Chandra to obtain precise
positions for a sample of Gamma-Ray Bursts (GRBs) with no optical afterglows,
where the optical light is suppressed relative to the X-ray flux. These bursts
are likely to be highly obscured and may have different environments from
the optically bright GRBs. Our Chandra observations will (unlike Swift XRT
positions) allow for the unique identification of a host galaxy. To locate these
host galaxies we will follow up our Chandra positions with deep optical and IR
observations with HST. The ultimate aim is to understand any differences between
the host galaxies of optically dark and bright GRBs, and how these affect the use
of GRBs as tracers of starformation and galaxy evolution at high redshift.
We will observe the host galaxies of dark gamma-ray bursts in two filters utilizing ACS/WFC F606W and WFC3/IR F160W. In each filter we will obtain a one orbit observation, split into a 4 point dither for PSF recovery. Our aim is to detect the hosts, and characterize their luminosity, colours and morphology. We will subsequently constrast these with those of the larger sample of GRBs which exhibit bright optical afterglows.
Our targets will become available over the course of the next Chandra cycle (roughly Dec 2008-Dec 2009), we will activate individual visits as the co-ordinates are known. As the targets are host galaxies and not afterglows these observations are not ToOs and can be scheduled at any time after the positions are known.
12
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J2000
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J2000
GALAXY
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J2000
GALAXY
HIGH REDSHIFT GALAXY
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J2000
GALAXY
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J2000
GALAXY
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J2000
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J2000
POS-TARG
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69.05
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ACS-WFC-DITHER-BOX
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POS-TARG
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18.528
WFC3-IR-DITHER-BOX-MIN
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POS-TARG
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WFC3-UVIS-DITHER-LINE
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WFC3-IR-DITHER-LINE
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false
The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
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/private/var/folders/dw/dw1O6cyEGAmmPy90Qd-X6U+++TQ/-Tmp-/OPVisit8527335657682441756.xml
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The scheduling data was generated by CASM 18.3.1.
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The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
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The scheduling data was generated by CASM 18.3.1.
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The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
/private/var/folders/dw/dw1O6cyEGAmmPy90Qd-X6U+++TQ/-Tmp-/OPVisit2534488158887158406.xml
(Tic-Visit
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true
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The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
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true
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Awaiting Dark GRB position from Chandra
The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
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true
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Awaiting Dark GRB position from Chandra
The scheduling data was generated by CASM 18.3.1.
CASM was run in Phase II mode.
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Awaiting Dark GRB position from Chandra