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O B S E R V A T I O N   C A T A L O G

OBSID:
28094
 Title:
Eat Your Green Pea Galaxies!         
Investigator:
Irwin
 Observer:
Irwin, Jimmy
 Phone:
205-348-3791
 Email:
jairwin@ua.edu
Target Name:
2MASX J02353152+3220376
 Sequence Number:
601588
 Instrument:
ACIS-S
 Grating:
NONE
 SI Mode:
TE_0057A
 Raster Scan:
N
 Annotated DOT:
MAR1124a

Proposal Number:
25620199
 Right Ascension:
38.8814
 Declination:
32.3439
 Status:
archived
 Start Date:
2024-03-15 15:10:00
Category:
NORMAL GALAXIES
 Type:
GO
 AO Cycle:
25
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
0.0025
 Order-1 Count Rate:

 Exposure Time:
10
 Time Remaining:
9.443
 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:
3
 Optional Chips:
I2 I3 S4
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:
The early Universe was re-ionized by high energy photons for which high-mass X-ray binaries (HMXBs) in low-metallicity, dwarf galaxies with high SFR might have contributed significantly to the process. Green Pea galaxies are believed to be low-z analogs to these cosmologically important ionizers, and are characterized by strong [OIII] emission indicative of a very young stellar population. As such, they are predicted to have a high L_{X,HMXB}/SFR ratio. We have identified seven new Green Pea galaxies with J-PLUS that are near enough to be detected with Chandra, and our sample will double the number of X-ray detected Green Peas. Our goal is to use the X-ray emission with joint HST imaging to trace the connection between HMXBs and star formation in such extreme emission line galaxies.

psci Run:
13
 Processing Date:
Jul 18 2024
 psci Directory:
/nfs/maaxnew/r3/fm/acis127a/acis127.log
OBSID:
28094
 SIM Mode:
ACIS-S
 OTG Mode:
NONE
 Seq Number:
601588
 Target Name:
2MASX_J02353152
 AO:
25
Start VCDU:
116426:008
 Start Time (UTC):
075:55988.093
 Stop Time (UTC):
075:65442.608
 Kilosecs:
9.5
 % Frames:
100.0
 # CCDs:
S2
# Frames:
3109
 # Events:
97538
 Events/sec:
10
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-113.4
Parameter Block:
0x0057b034
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te5x5
 BEP Mode:
F
 Start Row:
0
 # Rows:
1024
Primary Exposure:
30
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
No
 Trickle?:
Yes
 Bias Run:
12

pgf@space.mit.edu Sat Mar 29 10:37:19 EST 2025