0
Assigned ID: 894
----- Attempting Submission 1 (Fri Apr 10 21:56:49 GMT 2015) -----
HST Phase I Proposal 894 (apt_piscesstreams_15.apt) successfully submitted.
Receipt: # 894-1
----- Attempting Submission 2 (Fri Apr 10 22:28:09 GMT 2015) -----
HST Phase I Proposal 894 (apt_piscesstreams_15_fin.apt) successfully submitted.
Receipt: # 894-2
----- Attempting Submission 3 (Fri Apr 10 22:29:10 GMT 2015) -----
HST Phase I Proposal 894 (apt_piscesstreams_15_fin.apt) successfully submitted.
Receipt: # 894-3
The number of orbits used exceeds the number allocated
visit 11, HOPR repeat of visit 10
136254214
----- Attempting Submission 1 (Tue Jul 21 15:50:54 GMT 2015) -----
----- Attempting Submission 2 (Mon May 02 17:53:10 GMT 2016) -----
----- Attempting Submission 3 (Fri Jul 08 12:27:02 GMT 2016) -----
Resolved halo substructures beyond the Local Group: the assembly histories of NGC 253 and NGC 5128
We request HST/ACS imaging to follow up the 10 most prominent newly discovered substructures in the halos of NGC 253 and NGC 5128 (both at D=3.8 Mpc, and the dominant galaxies of their respective groups, Sculptor and Centaurus A). The substructures were found via our ongoing ground-based (Magellan/Megacam) survey out to 150 kpc for each galaxy, and include stunning disrupting satellites, streams and shells. Current Cold Dark Matter based simulations provide testable predictions for the physical properties (e.g ages and metallicities) of in-situ/accreted components, but the lack of a robust observational census of outer halos for a wide range of galaxies beyond the Local Group prevents robust conclusions. Our proposed observations of the halo substructures in NGC 253 and NGC 5128 will confirm their distance, group membership, and allow for an accurate derivation of their luminosities, metallicities, and star formation histories: for the first time, substructures around Milky Way-sized halos beyond the Local Group will be characterized in great detail. The substructures' properties will be compared to those of the smooth halo, as derived from our wide-field imaging as well as from extant HST halo observations, and to similar substructures in the halos of the Milky Way and M31. This program will constitute a critical observational test to cosmological predictions of the hierarchical assembly process.
The observations are going to be performed with ACS/WFC (primary) and WFC3/UVIS (parallel), and target streams and substructures in the extended haloes of two nearby galaxies, NGC5128 and NGC253. We request imaging in F606W and F814W filters (broad V and I) for both instruments, in order to compute accurate TRGB distances for our targets and characterize their stellar content (star formation histories and metallicities), while optimizing the exposure times. The parallel pointings will allow us to observe a field region next to our targets, which are extended and completely fill the ACS field of view. This will enable a comparison between the stellar populations of the galaxies' smooth halo and those of their substructures.
To achieve our goal, we need to obtain a minimum SNR of 10 at ~1.5 mag below the TRGB in I band, the TRGB having M_I = -4.0 and M_V = -2.5 (assuming metal-poor populations with an average V-I=1.5), or I~24 and V~25.5 at the distance of the target galaxies (~3.7 Mpc). This requires ~2250 sec in the F606W filter and ~2100 sec in the F814W filter, which nicely fit into one orbit per filter after taking into account overheads, and subdividing the exposures into three dithered observations to remove detector defects. We combine the two orbits per target into one visit in order to maintain the same orientation, and restrict the orientation range when needed in order to obtain substructure-free field regions.
RESOLVED STELLAR POPULATIONS
12
false
false
false
false
false
false
SUPPORTED
GALAXY
ELLIPTICAL
HALO
INTERACTING GALAXY
estimated TRGB magnitude
CENA-MM-DW16
CENA-DW-133024-421124
J2000
J2000
GALAXY
ELLIPTICAL
HALO
TIDAL TAIL
estimated TRGB magnitude
J2000
J2000
GALAXY
ELLIPTICAL
HALO
TIDAL TAIL
estimated TRGB magnitude
J2000
J2000
GALAXY
ELLIPTICAL
HALO
SHELL
estimated TRGB magnitude
J2000
J2000
GALAXY
ELLIPTICAL
HALO
TIDAL TAIL
estimated TRGB magnitude
J2000
J2000
GALAXY
ELLIPTICAL
HALO
SHELL
estimated TRGB magnitude
J2000
J2000
GALAXY
HALO
SHELL
SPIRAL
estimated TRGB magnitude
J2000
J2000
GALAXY
HALO
SHELL
SPIRAL
estimated TRGB magnitude
J2000
J2000
GALAXY
HALO
SHELL
SPIRAL
estimated TRGB magnitude
J2000
J2000
GALAXY
HALO
INTERACTING GALAXY
SPIRAL
estimated TRGB magnitude
SCL-MM-DW2
SCL-DW-005021-244312
J2000
J2000
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F606W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F606W
WFC3/UVIS
Imaging
No
No
F814W
POS-TARG
DITHER
3.011
LINE
false
false
3
85.28
ACS-WFC-DITHER-LINE
1
false
The scheduling data was generated by CASM 24.0.
CASM was run in Phase II mode.
1466580409000
94.61408340151849
(Tic-Visit
:proposal-id 14259
:visit-id "01"
:proposal-version -1
:trans-version "20160129"
:date "02-May-2016 13:51:50.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "01"
:obset-id "01"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "01"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "01"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
(Tic-Visit
:proposal-id 14259
:visit-id "02"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:43:58.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "02"
:obset-id "02"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "02"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "02"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
1453836836000
294.04642416767297
(Tic-Visit
:proposal-id 14259
:visit-id "03"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:03.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "03"
:obset-id "03"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "03"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "03"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
(Tic-Visit
:proposal-id 14259
:visit-id "04"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:08.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "04"
:obset-id "04"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "04"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "04"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
1454215042000
297.6457759195033
(Tic-Visit
:proposal-id 14259
:visit-id "05"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:12.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "05"
:obset-id "05"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "05"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "05"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
(Tic-Visit
:proposal-id 14259
:visit-id "06"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:16.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "06"
:obset-id "06"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "06"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2974
:al-overhead-at-end 110
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "06"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3085
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3307
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
1465088081000
235.40420766136555
(Tic-Visit
:proposal-id 14259
:visit-id "07"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:21.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "07"
:obset-id "07"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "07"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2896
:al-overhead-at-end 108
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "07"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3007
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
1464904952000
239.0
(Tic-Visit
:proposal-id 14259
:visit-id "08"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:25.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "08"
:obset-id "08"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "08"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2896
:al-overhead-at-end 108
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "08"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3007
:al-overhead-at-end 100
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
(Tic-Visit
:proposal-id 14259
:visit-id "09"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:29.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "09"
:obset-id "09"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "09"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2896
:al-overhead-at-end 102
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "09"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3007
:al-overhead-at-end 94
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3229
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 23.2.
CASM was run in Phase II mode.
1466794125000
259.11925993169825
(Tic-Visit
:proposal-id 14259
:visit-id "10"
:proposal-version -1
:trans-version "20150609"
:date "21-Jul-2015 10:44:34.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "10"
:obset-id "10"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "10"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2889
:al-overhead-at-end 109
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3222
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "10"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3000
:al-overhead-at-end 101
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3222
:pcs-gap 0
)
true
2
0
/private/var/folders/dv/kllm6qvx1m3bq_0v7lp6wwtc000702/T/OPVisit9128844455215762285.xml
HOPR repeat of visit 10
(Tic-Visit
:proposal-id 14259
:visit-id "11"
:proposal-version -1
:trans-version "20160601"
:date "08-Jul-2016 08:25:45.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 3437840
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14259
:visit-id "11"
:obset-id "11"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14259
:visit-id "11"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2889
:al-overhead-at-end 109
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3222
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14259
:visit-id "11"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3000
:al-overhead-at-end 101
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3222
:pcs-gap 0
)
true
2
0