Where cores are no more: assessing the role of dissipation in the assembly of early-type galaxies
Outcomes of violent dissipative and non-dissipative galaxy mergers are predicted to have different dynamical states and different nuclear profiles. The current paradigm is that flat (core) light profiles are results of coalescence of supermassive black holes in non-dissipative mergers of galaxies. These merger are also thought to produce remnants with low angular momentum (slow rotators) within a half-light radius. Matching the archival HST imaging with the volume-limited Atlas3D sample of nearby early-type galaxies (with integral-field stellar kinematics), indicates that the current paradigm is not complete. A recent study revealed the existence of fast rotating galaxies with core nuclear light profiles, and, more significantly, it postulated the existence of core-less slow rotators. The implication on galaxy formation scenarios of the latter finding is straightforward: dissipative mergers can create dynamically different galaxies both of high and low angular momentum. Unfortunately, the sample of Atlas3D galaxies with HST imaging misses a key set of low angular momentum objects with intermediate masses which provide the unique opportunity to (i) determine to what extent and to what upper mass limit dissipative processes dominate the formation of ETGs and (ii) to conclusively test the connection between nuclear structure and global parameters such as the stellar angular momentum, total mass and stellar velocity dispersion. We ask to observe the 12 carefully selected galaxies in this category.
Each target is to be observed during one orbit. The observations during the orbit comprise the Primary observations with WFC3/UVIS in F814W and F475W filters and Parallel observatios with ACS/WFC in the same filters. The observations with each filter are split in two separate observations which are dithetered to improve the final resolution and remove the cosmic rays. There is also a third and much shorter exposure with F814W filter to ensure a good quality data at the very nucleus (which could be saturated during the longer exposures).
UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE
Default
false
false
false
false
false
SUPPORTED
GALAXY
ELLIPTICAL
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
ELLIPTICAL
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
ELLIPTICAL
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
ELLIPTICAL
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
LENTICULAR
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
GALAXY
ELLIPTICAL
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F475W
WFC3/UVIS
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F475W
ACS/WFC
Imaging
No
No
F814W
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 661
(Tic-Visit
:proposal-id 13324
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:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "01"
:obset-id "01"
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)
(Tic-Orbit
:proposal-id 13324
:visit-id "01"
:orbit-number 1
:pcs-time 333
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:al-overhead-at-end 40
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3192
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 1222
(Tic-Visit
:proposal-id 13324
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:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:33.0"
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:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
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:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "02"
:obset-id "02"
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)
(Tic-Orbit
:proposal-id 13324
:visit-id "02"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2832
:al-overhead-at-end 30
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3165
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 1289
(Tic-Visit
:proposal-id 13324
:visit-id "03"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:37.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "03"
:obset-id "03"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13324
:visit-id "03"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2832
:al-overhead-at-end 42
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3165
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 3522
(Tic-Visit
:proposal-id 13324
:visit-id "04"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:40.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "04"
:obset-id "04"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13324
:visit-id "04"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2843
:al-overhead-at-end 31
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3176
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 4191
(Tic-Visit
:proposal-id 13324
:visit-id "05"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:44.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "05"
:obset-id "05"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13324
:visit-id "05"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2829
:al-overhead-at-end 4
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3162
:pcs-gap 0
)
false
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 4690
(Tic-Visit
:proposal-id 13324
:visit-id "06"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:47.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "06"
:obset-id "06"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13324
:visit-id "06"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2832
:al-overhead-at-end 42
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3165
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 5481
(Tic-Visit
:proposal-id 13324
:visit-id "07"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:51.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13324
:visit-id "07"
:obset-id "07"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13324
:visit-id "07"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2949
:al-overhead-at-end 40
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3284
:pcs-gap 0
)
false
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 5631
(Tic-Visit
:proposal-id 13324
:visit-id "08"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:42:54.0"
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:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
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:data-volume 2580640
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:coron NIL
)
(Tic-Obset
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:obset-id "08"
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)
(Tic-Orbit
:proposal-id 13324
:visit-id "08"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2976
:al-overhead-at-end 48
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3312
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 7454
(Special position on CCD + orient angle due to a bright star)
(Tic-Visit
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)
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)
(Tic-Orbit
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:si-vis-utilization 2830
:al-overhead-at-end 3
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3163
:pcs-gap 0
)
false
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to PGC 28887
(Tic-Visit
:proposal-id 13324
:visit-id "10"
:proposal-version -1
:trans-version "20130502"
:date "12-Jun-2013 09:43:01.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
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:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 2580640
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:coron NIL
)
(Tic-Obset
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)
(Tic-Orbit
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:orbit-number 1
:pcs-time 333
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:al-overhead-at-end 2
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3158
:pcs-gap 0
)
false
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to PGC 50395
(Tic-Visit
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:trans-version "20130502"
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:coron NIL
)
(Tic-Obset
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)
(Tic-Orbit
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:pcs-time 333
:si-vis-utilization 2949
:al-overhead-at-end 40
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3284
:pcs-gap 0
)
true
1
0
The scheduling data was generated by CASM 21.2.
CASM was run in Phase II mode.
Applies to NGC 3960
(Tic-Visit
:proposal-id 13324
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(Tic-Obset
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)
(Tic-Orbit
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:orbit-number 1
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:si-vis-utilization 2843
:al-overhead-at-end 31
:internal-dur-at-end 1015
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3176
:pcs-gap 0
)
true
1
0