J/ApJ/860/37 Stellar specific angular momentum & mass relation (Sweet+, 2018)
Revisiting the stellar mass-angular momentum-morphology relation: extension to
higher bulge fraction and the effect of bulge type.
Sweet S.M., Fisher D., Glazebrook K., Obreschkow D., Lagos C., Wang L.
<Astrophys. J., 860, 37 (2018)>
=2018ApJ...860...37S 2018ApJ...860...37S
ADC_Keywords: Galaxies, radio; Morphology
Keywords: galaxies: bulges ; galaxies: elliptical and lenticular, cD ;
galaxies: evolution ; galaxies: fundamental parameters ;
galaxies: kinematics and dynamics ; galaxies: spiral
Abstract:
We present the relation between stellar specific angular momentum j*,
stellar mass M*, and bulge-to-total light ratio β for The HI
Nearby Galaxy Survey, the Calar Alto Legacy Integral Field Area
Survey, and Romanowsky & Fall (2012ApJS..203...17R 2012ApJS..203...17R) data sets,
exploring the existence of a fundamental plane between these
parameters, as first suggested by Obreschkow & Glazebrook
(2014ApJ...784...26O 2014ApJ...784...26O). Our best-fit M*-j* relation yields a slope of
α=1.03±0.11 with a trivariate fit including β. When
ignoring the effect of β, the exponent α=0.56±0.06 is
consistent with α=2/3 that is predicted for dark matter halos.
There is a linear β-j*/M* relation for β≲0.4, exhibiting a
general trend of increasing β with decreasing j*/M*. Galaxies
with β≳0.4 have higher j* than predicted by the relation.
Pseudobulge galaxies have preferentially lower β for a given
j*/M* than galaxies that contain classical bulges. Pseudobulge
galaxies follow a well- defined track in β-j*/M* space,
consistent with Obreschkow & Glazebrook, while galaxies with classical
bulges do not. These results are consistent with the hypothesis that
while growth in either bulge type is linked to a decrease in j*/M*,
the mechanisms that build pseudobulges seem to be less efficient at
increasing bulge mass per decrease in specific angular momentum than
those that build classical bulges.
Description:
We combine observations from The HI Nearby Galaxy Survey (THINGS,
Leroy+ 2008, J/AJ/136/2782 ; Walter+ 2008, J/AJ/136/2563), Romanowsky
& Fall (RF12, 2012ApJS..203...17R 2012ApJS..203...17R), and Calar Alto Legacy Integral
Field Area Survey (CALIFA, Sanchez+ 2012A&A...538A...8S 2012A&A...538A...8S, 2016,
J/A+A/594/A36 ; Husemann+ 2013A&A...549A..87H 2013A&A...549A..87H and Walcher+
2014A&A...569A...1W 2014A&A...569A...1W) data sets to trace the fundamental relation
between M*, j*, and β over a wide range of β.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 91 Properties of galaxies presented in this paper
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See also:
J/AJ/136/773 : Structure of classical bulges & pseudobulges (Fisher+, 2008)
J/AJ/136/2782 : Star formation efficiency in nearby galaxies (Leroy+, 2008)
J/AJ/136/2563 : HI Nearby Galaxy Survey, THINGS (Walter+, 2008)
J/ApJ/716/942 : Bulges of nearby galaxies with Spitzer (Fisher+, 2010)
J/ApJ/733/L47 : Galaxy bulge types within 11Mpc (Fisher+, 2011)
J/ApJ/754/67 : Longslit spectroscopy of local bulges (Fabricius+, 2012)
J/MNRAS/446/1567 : SAMI Galaxy Survey: EDR (Allen+, 2015)
J/A+A/594/A36 : CALIFA Survey DR3 list of galaxies (Sanchez+, 2016)
J/ApJ/848/87 : CALIFA SFRs. II. Bulges, bars + disks (Catalan-Torrecilla+,
2017)
J/A+A/597/A48 : Stellar kinematics in CALIFA survey (Falcon-Barroso+, 2017)
J/A+A/598/A32 : 2D decomposition of CALIFA galaxies (Mendez-Abreu+, 2017)
J/A+A/604/A4 : CALIFA galaxies observational hints (Ruiz-Lara+, 2017)
J/A+A/618/A34 : Barlenses in the CALIFA survey (Laurikainen+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ID Galaxy identifier
15- 20 A6 --- Survey Survey identifier (1)
22- 25 A4 --- TType Galaxy Hubble type
27- 31 F5.2 [Msun] logM* [8.9/11.4] log stellar mass
33- 36 F4.2 [-] e_logM* [0.1/0.2] Fractional uncertainty in logM*
38- 41 F4.2 --- Beta [0/0.8] Bulge-to-total ratio
43- 46 F4.2 --- e_Beta [0.05/0.1] Uncertainty in Beta
48- 50 F3.1 kpc rd [0.5/7] Scale length
52- 55 F4.1 kpc rflat [0.2/11]? Radius where rotation curve
becomes flat
57- 59 I3 km/s vflat [36/394] Asymptotic velocity
61- 64 I4 kpc.km/s j* [79/5161] Stellar specific angular momentum
66- 69 I4 kpc.km/s e_j* [11/1123] Uncertainty in j*
71- 74 F4.2 --- nbulge [0/6.2]? Bulge Sersic index
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Note (1): Survey as follows:
CALIFA = Calar Alto Legacy Integral Field Area Survey --
Sanchez+ 2012A&A...538A...8S 2012A&A...538A...8S, 2016, J/A+A/594/A36 ;
Husemann+ 2013A&A...549A..87H 2013A&A...549A..87H and Walcher+ 2014A&A...569A...1W 2014A&A...569A...1W
-- 50 occurrences
RF12 = Romanowsky & Fall 2012ApJS..203...17R 2012ApJS..203...17R -- 25 occurrences
THINGS = The HI Nearby Galaxy Survey -- Leroy+ 2008, J/AJ/136/2782 ;
Walter+ 2008, J/AJ/136/2563 -- 16 occurrences
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 14-Jun-2019