J/MNRAS/474/1307 S0 galaxies morpho-kinematic properties (Mendez-Abreu+, 2018)
Morpho-kinematic properties of field S0 bulges in the CALIFA survey.
Mendez-Abreu J., Aguerri J.A.L., Falcon-Barroso J., Ruiz-Lara T.,
Sanchez-Menguiano L., de Lorenzo-Caceres A., Costantin L.,
Catalan-Torrecilla C., Zhu L., Sanchez-Blazquez P., Florido E.,
Corsini E.M., Wild V., Lyubenova M., van de Ven G., Sanchez S.F.,
Bland-Hawthorn J., Galbany L., Garcia-Benito R., Garcia-Lorenzo B.,
Gonzalez Delgado R.M., Lopez-Sanchez A.R., Marino R.A., Marquez I.,
Ziegler B.
<Mon. Not. R. Astron. Soc., 474, 1307-1334 (2018)>
=2018MNRAS.474.1307M 2018MNRAS.474.1307M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies ; Morphology ; Photometry, SDSS
Keywords: galaxies: bulges - galaxies: evolution - galaxies: formation -
galaxies: kinematics and dynamics - galaxies: photometry -
galaxies: structure
Abstract:
We study a sample of 28 S0 galaxies extracted from the integral field
spectroscopic (IFS) survey Calar Alto Legacy Integral Field Area. We
combine an accurate two-dimensional (2D) multicomponent photometric
decomposition with the IFS kinematic properties of their bulges to
understand their formation scenario. Our final sample is
representative of S0s with high stellar masses (M*/M☉>1010).
They lay mainly on the red sequence and live in relatively isolated
environments similar to that of the field and loose groups. We use our
2D photometric decomposition to define the size and photometric
properties of the bulges, as well as their location within the
galaxies. We perform mock spectroscopic simulations mimicking our
observed galaxies to quantify the impact of the underlying disc on our
bulge kinematic measurements (ν and v/λ). We compare our
bulge corrected kinematic measurements with the results from
Schwarzschild dynamical modelling. The good agreement confirms the
robustness of our results and allows us to use bulge deprojected
values of λ and v/σ. We find that the photometric (n and
B/T) and kinematic (v/σ and λ) properties of our field S0
bulges are not correlated. We demonstrate that this morpho-kinematic
decoupling is intrinsic to the bulges and it is not due to projection
effects. We conclude that photometric diagnostics to separate
different types of bulges (disc-like versus classical) might not be
useful for S0 galaxies. The morpho-kinematics properties of S0 bulges
derived in this paper suggest that they are mainly formed by
dissipational processes happening at high redshift, but dedicated
high-resolution simulations are necessary to better identify their
origin.
Description:
We have studied the photometric and kinematic properties of a sample
of 34 S0 bulges drawn from the IFS CALIFA survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 65 102 Structural parameters of the bulge structures
in our sample galaxies
tablea2.dat 85 102 Structural parameters of the disc structures
in our sample galaxies
tablea3.dat 59 102 Structural parameters of the bar structures
in our sample galaxies
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Galaxy Galaxy name
15 A1 --- Band [griz] SDSS band
17- 20 F4.1 mag/arcsec2 SuBre Effective surface brightness in Band
22- 24 F3.1 mag/arcsec2 e_SuBre Error in effective surface brightness
in Band
26- 29 F4.1 arcsec re Effective radius in Band in arcsec
31- 33 F3.1 arcsec e_re Error in effective radius in Band in arcsec
35- 37 F3.1 kpc rek Effective radius in Band in kpc
39- 41 F3.1 kpc e_rek Error in effective radius in Band in kpc
43- 45 F3.1 --- n Sersic index in Band
47- 49 F3.1 --- e_n Error on Sersic index in Band
51- 54 F4.2 --- qbulge Bulge axis ratio in Band
56- 59 F4.2 --- e_qbulge Error in Bulge axis ratio in Band
61- 63 I3 deg PA Position angle of the bulge in Band
65 I1 deg e_PA Error on position angle of the bulge in Band
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Galaxy Galaxy name
15 A1 --- Band [griz] SDSS band
17- 20 F4.1 mag/arcsec2 SuBr0 Central surface brightness in Band
22- 24 F3.1 mag/arcsec2 e_SuBr0 Error on central surface brightness in Band
26- 29 F4.1 arcsec h Scalelength in Band in arcsec
31- 33 F3.1 arcsec e_h Error on scalelength in Band in arcsec
35- 38 F4.1 arcsec hk Scalelength in Band in kpc
40- 42 F3.1 arcsec e_hk Error on scalelength in Band in kpc
44- 45 I2 arcsec rbreak ?=- Break radius in Band in arcsec
47 I1 arcsec e_rbreak ?=- Error on break radius in Band in arcsec
49- 52 F4.1 kpc rbreakk ?=- Break radius in Band in kpc
54- 56 F3.1 kpc e_rbreakk ?=- Error on break radius in Band in kpc
58- 59 I2 arcsec h0 ?=- Outer scalelength in Band in arcsec
61 I1 arcsec e_h0 ?=- Error on outer scalelength in Band
in arcsec
63- 65 F3.1 kpc h0k ?=- Outer scalelength in Band in kpc
67- 69 F3.1 kpc e_h0k ?=- Error on outer scalelength in Band
in kpc
71- 74 F4.2 --- qdisc Axis ratio in Band
76- 79 F4.2 --- e_qdisc Error on axis ratio in Band
81- 83 I3 deg PA Position angle of the disc in Band
85 I1 deg e_PA Error on position angle of the disc in Band
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Galaxy Galaxy name
15 A1 --- Band [griz] SDSS band
17- 20 F4.1 mag/arcsec2 SuBrbar ?=- Central surface in Band
22- 24 F3.1 mag/arcsec2 e_SuBrbar ?=- Error on central surface in Band
26- 30 F5.2 arcsec abar ?=- Semi-major axis length in Band in arcsec
32- 34 F3.1 arcsec e_abar ?=- Error on semi-major axis length in Band
in arcsec
36- 39 F4.1 arcsec abark ?=- Semi-major axis length in Band in kpc
41- 43 F3.1 arcsec e_abark ?=- Error on semi-major axis length in Band
in kpc
45- 48 F4.2 --- qbar ?=- Axis ratio
50- 53 F4.2 --- e_qbar ?=- Error on axis ratio
55- 57 I3 deg PA ?=- Position angle of the bar
59 I1 deg e_PA ?=- Error on position angle of the bar
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Feb-2021