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OBSID:
28310
 Title:
THE CLUSTER EVOLUTION REFERENCE ENSEMBLE AT LOW-Z (CEREAL): A LOW-MASS EXTENSION
Investigator:
McDonald
 Observer:
McDonald, Michael
 Phone:
(617) 324-1075
 Email:
mcdonald@space.mit.edu
Target Name:
PSZ2G198.47-23.69
 Sequence Number:
802125
 Instrument:
ACIS-I
 Grating:
NONE
 SI Mode:
TE_00458B
 Raster Scan:
N
 Annotated DOT:
DEC0224a

Proposal Number:
25800174
 Right Ascension:
75.3424
 Declination:
1.15538
 Status:
observed
 Start Date:
2024-12-02 23:24:06
Category:
CLUSTERS OF GALAXIES
 Type:
GO
 AO Cycle:
25
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
0.5
 Order-1 Count Rate:

 Exposure Time:
5.387
 Time Remaining:
5.473
 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:
S2
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:
We propose Chandra observations to complete a mass-selected and unbiased sample of 157 galaxy clusters at low-z. The Cluster Evolution Reference Ensemble at Low-z (CEREAL) will immediately allow for a variety of studies, including cluster demographics, AGN populations, and self similarity, alongside the search for rare, extreme systems such as the Bullet and Phoenix clusters. By design, this sample would prove the perfect complement to ongoing studies of clusters at z>1 by providing an anchor for evolutionary studies, and to the eRosita All-Sky Survey, which will provide wide-field, high-S/N (>5000 counts) eRASS imaging and spectra for each of these clusters. In this proposal we propose to complete the 157-cluster sample with the observation of the 21 lowest-mass systems.

psci Run:
82
 Processing Date:
Dec 10 20:28
 psci Directory:
/nfs/maaxnew/r3/fo/acis129a/acis129.log
OBSID:
28310
 SIM Mode:
ACIS-I
 OTG Mode:
NONE
 Seq Number:
802125
 Target Name:
PSZ2G198.47-23.
 AO:
25
Start VCDU:
20993:024
 Start Time (UTC):
337:85169.773
 Stop Time (UTC):
338:04257.203
 Kilosecs:
5.5
 % Frames:
100.0
 # CCDs:
I5
# Frames:
1747
 # Events:
86590
 Events/sec:
15
 PSCI errors:
0
 % drops:
0.1
 Bias Errs:
0
 FP Temp:
-112.6
Parameter Block:
0x00458034
 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:
82

pgf@space.mit.edu Mon Mar 31 10:36:39 EST 2025