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O B S E R V A T I O N   C A T A L O G

OBSID:
27078
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 07
Sequence Number:
402413
Instrument:
ACIS-I
Grating:
NONE
SI Mode:
TE_006E6B
Raster Scan:
N
Annotated DOT:
DEC2622a

Proposal Number:
24400340
Right Ascension:
83.8792
Declination:
-66.9572
Status:
archived
Start Date:
2023-01-04 05:35:48
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:
25
Time Remaining:
25.084
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:
13
Processing Date:
Jan 18 2023
psci Directory:
/nfs/maaxnew/r3/fi/acis123a/acis123.log
OBSID:
27078
SIM Mode:
ACIS-I
OTG Mode:
NONE
Seq Number:
402413
Target Name:
LMC_Deep_Field_
AO:
24
Start VCDU:
62619:056
Start Time (UTC):
004:21207.258
Stop Time (UTC):
004:46303.971
Kilosecs:
25.1
% Frames:
100.0
# CCDs:
I4
# Frames:
7990
# Events:
527148
Events/sec:
21
PSCI errors:
0
% drops:
0.0
Bias Errs:
0
FP Temp:
-113.8
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:
13


pgf@space.mit.edu Tue Apr 8 9:48:31 EST 2025