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OBSID:
28675
 Title:
Chandra Observations of a Star-Bursting Cluster of Galaxies at z=1.034  
Investigator:
Hlavacek-Larrondo
 Observer:
Hlavacek-Larrondo, Julie
 Phone:
0015143435627
 Email:
j.larrondo@umontreal.ca
Target Name:
SpARCS J105111+581803
 Sequence Number:
802120
 Instrument:
ACIS-I
 Grating:
NONE
 SI Mode:
TE_006E6B
 Raster Scan:
N
 Annotated DOT:
NOV1024b

Proposal Number:
25800083
 Right Ascension:
162.797
 Declination:
58.3007
 Status:
observed
 Start Date:
2024-11-15 16:19:20
Category:
CLUSTERS OF GALAXIES
 Type:
GO
 AO Cycle:
25
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
0.004
 Order-1 Count Rate:

 Exposure Time:
22
 Time Remaining:
19.852
 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
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:
Recently, a group of researchers reported the discovery of a massive cool core cluster at z=1.709. Based on Chandra data, the authors determined that the cool core is cooling catastrophically with no evidence of black hole feedback from the central galaxy. This is in contrast to what is seen in the local Universe. Here, we target another cluster that appears to host the same outstanding star-bursting properties, SpARCS J1051+58 (z=1.034), yet has never been imaged at X-ray wavelengths. We propose to obtain the first X-ray data of this cluster, characterize its intracluster gas and determine if this gas is linked to its star-bursting core. These observations will play a major role in understanding the in situ star formation in high-redshift clusters, and how intracluster stars are formed.

psci Run:
10
 Processing Date:
Dec 10 20:28
 psci Directory:
/nfs/maaxnew/r3/fo/acis129a/acis129.log
OBSID:
28675
 SIM Mode:
ACIS-I
 OTG Mode:
NONE
 Seq Number:
802120
 Target Name:
SpARCS_J105111+
 AO:
25
Start VCDU:
106514:032
 Start Time (UTC):
320:59774.895
 Stop Time (UTC):
320:79638.713
 Kilosecs:
19.9
 % Frames:
100.0
 # CCDs:
I4
# Frames:
6324
 # Events:
239787
 Events/sec:
12
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-115.2
Parameter Block:
0x006e6034
 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:
10

pgf@space.mit.edu Thu Apr 3 20:00:53 EST 2025