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OBSID:
25370
Title:
Revealing obscured quasars at z~6        
Investigator:
Iwasawa
Observer:
Iwasawa, Kazushi
Phone:
+34934031323
Email:
kazushi.iwasawa@icc.ub.edu
Target Name:
[MOK2016b] HSC J142331.71-001809.1
Sequence Number:
704414
Instrument:
ACIS-S
Grating:
NONE
SI Mode:
TE_00914B
Raster Scan:
N
Annotated DOT:
DEC1321a

Proposal Number:
23700304
Right Ascension:
215.882
Declination:
-0.302528
Status:
archived
Start Date:
2021-12-14 05:06:38
Category:
ACTIVE GALAXIES AND QUASARS
Type:
GO
AO Cycle:
23
Dither Flag:
Y
Y Offset:
0
Z Offset:
0
Est. Count Rate:
0.0002
Order-1 Count Rate:

Exposure Time:
20
Time Remaining:
20.088
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:
We propose exploratory observations of five obscured AGN candidates at z~6, selected by the Subaru HSC survey. X-ray surveys indicate increasing obscured AGN fraction towards high-z and theoretical work predicts this trend to continue to z=6-7. Despite the expected abundance, no reliable detection of obscured AGN has been made so far. The proposed targets are selected among the faint quasars discovered in the unprecedented large area and greater depths of the HSC survey, and are characterised by a faint rest-frame UV continuum and luminous (>1e44 erg/s) and extremely large EW (>250A) of narrow Ly_alpha. Our proposed program may reveal the first, powerful obscured quasars at z~6 and provide us with crucial constraints on SMBH formation mechanism in the early Universe.

psci Run:
111
Processing Date:
Dec 30 2021
psci Directory:
/nfs/maaxnew/r3/fd/acis118c/acis118.log
OBSID:
25370
SIM Mode:
ACIS-S
OTG Mode:
NONE
Seq Number:
704414
Target Name:
[MOK2016b]_HSC_
AO:
23
Start VCDU:
53170:072
Start Time (UTC):
348:19670.638
Stop Time (UTC):
348:39771.671
Kilosecs:
20.1
% Frames:
100.0
# CCDs:
S1
# Frames:
6610
# Events:
191194
Events/sec:
9
PSCI errors:
0
% drops:
0.0
Bias Errs:
0
FP Temp:
-113.8
Parameter Block:
0x00914014
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?:
Yes
Trickle?:
Yes
Bias Run:
111


pgf@space.mit.edu Thu Dec 12 21:19:55 EST 2024