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OBSID:
27080
 Title:
Using the LMC to Understand X-ray Binary Evolution: Mind the Metallicity Gap 
Investigator:
Antoniou
 Observer:
Antoniou, Vallia
 Phone:
515-450-6378
 Email:
vallia.antoniou@ttu.edu
Target Name:
LMC Deep Field 08
 Sequence Number:
402414
 Instrument:
ACIS-I
 Grating:
NONE
 SI Mode:
TE_006E6B
 Raster Scan:
N
 Annotated DOT:
SEP1123b

Proposal Number:
24400340
 Right Ascension:
82.25
 Declination:
-69.8533
 Status:
archived
 Start Date:
2023-09-16 10:52:19
Category:
BH AND NS BINARIES
 Type:
GO
 AO Cycle:
24
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
0.2
 Order-1 Count Rate:

 Exposure Time:
26
 Time Remaining:
26.089
 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:
2
 Optional Chips:
S2 S3
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 a comprehensive survey of 12 fields (each 100 ks) in the LMC probing young (<100 Myr) stellar populations of different ages down to Lx~2E32 erg/s, and matching the ages sampled in the similar depth SMC survey. This Lx limit reaches well into the regime of quiescent accreting binaries and X-ray emitting normal stars. The proposed observations will provide the deepest X-ray luminosity functions (XLF) for X-ray binaries ever recorded, enabling us to: (a) directly measure their formation efficiency as a function of age and metallicity; (b) address the evolution of the XLF in the 10-100 Myr range, and in particular the influence of the propeller effect; (c) by comparison with X-ray binary population synthesis models, constrain parameters relevant to their formation and evolution.

psci Run:
219
 Processing Date:
Oct 2 2023
 psci Directory:
/nfs/maaxnew/r3/fk/acis125c/acis125.log
OBSID:
27080
 SIM Mode:
ACIS-I
 OTG Mode:
NONE
 Seq Number:
402414
 Target Name:
LMC_Deep_Field_
 AO:
24
Start VCDU:
32339:080
 Start Time (UTC):
259:39953.728
 Stop Time (UTC):
259:66055.532
 Kilosecs:
26.1
 % Frames:
100.0
 # CCDs:
I4
# Frames:
8310
 # Events:
401390
 Events/sec:
15
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-115.3
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:
219

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