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O B S E R V A T I O N   C A T A L O G

OBSID:
26938
 Title:
Chandra and XMM-Newton Observations of the Most Extreme z > 1.25 ACTPol Survey Clusters
Investigator:
Flores
 Observer:
Flores, Anthony
 Phone:
2152372218
 Email:
aflores7@stanford.edu
Target Name:
ACT-CL J1521.1+0451
 Sequence Number:
802052
 Instrument:
ACIS-S
 Grating:
NONE
 SI Mode:
TE_0046EB
 Raster Scan:
N
 Annotated DOT:
MAY0123a

Proposal Number:
24800278
 Right Ascension:
230.28
 Declination:
4.86332
 Status:
archived
 Start Date:
2023-05-04 08:54:45
Category:
CLUSTERS OF GALAXIES
 Type:
GO
 AO Cycle:
24
 Dither Flag:
Y
 Y Offset:
-1.5
 Z Offset:
0
Est. Count Rate:
0.01572
 Order-1 Count Rate:

 Exposure Time:
16
 Time Remaining:
16.061
 Reqd Start Time:

 Reqd Stop Time:
Period:

 Epoch:

 Start of Period:

 End of Period:

 PS Margin:

 PE Margin:

 Max Segments:
0

ACIS Mode:
TE
 Standard?:
No
 BEP Mode:
VF
 Dropped Chip Count:
0
 Optional Chips:
I2 I3
On-Chip Summing?:
No
 Row Sum:

 Column Sum:

 Frame Time:
Subarray Mode:
NONE
 Starting Row:
0
 Row Count:
1023
 Subarray Frame Time:

Duty Cycle?:
No
 Cycle Count:
0
 Primary Exp Time:

 Secondary Exp Time:
Event Filter?:
No
 Filter Threshold:

 Filter Range:

 Bias Requested?:
No
 Bias Frequency:

 Bias After?:
No
 Spatial Window?:
No

Abstract:
Sunyaev-Zel'dovich (SZ) surveys are currently the most powerful and consistent method of detecting high mass, high redshift galaxy clusters, whose dynamic, thermodynamic, and chemical properties serve as unique probes of the composition and growth of structure in our Universe. The Atacama Cosmology Telescope (ACT) has surveyed >13000 sq. deg of sky, and the resulting ACTPol survey has detected thousands of clusters (hundreds at z>1) based on their SZ signal. This proposal targets the most massive high-z ACTPol clusters without X-ray follow-up, allowing us to obtain detailed measurements of cluster masses, morphologies, and thermodynamic properties, while nearly doubling the number of X-ray observed clusters in this redshift range for which these measurement are possible.

psci Run:
128
 Processing Date:
May 15 2023
 psci Directory:
/nfs/maaxnew/r3/fj/acis124b/acis124.log
OBSID:
26938
 SIM Mode:
ACIS-S
 OTG Mode:
NONE
 Seq Number:
802052
 Target Name:
ACT-CL_J1521.1+
 AO:
24
Start VCDU:
69737:064
 Start Time (UTC):
124:33265.934
 Stop Time (UTC):
124:49338.625
 Kilosecs:
16.1
 % Frames:
100.0
 # CCDs:
I5
# Frames:
5117
 # Events:
516130
 Events/sec:
32
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-116.2
Parameter Block:
0x0046e034
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te5x5
 BEP Mode:
F
 Start Row:
0
 # Rows:
1024
Primary Exposure:
31
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
Yes
 Trickle?:
Yes
 Bias Run:
128

pgf@space.mit.edu Wed Mar 26 10:00:48 EST 2025