J/ApJS/247/31 Dark matter halo models for SPARC galaxies (Li+, 2020)
A comprehensive catalog of dark matter halo models for SPARC galaxies.
Li P., Lelli F., McGaugh S., Schombert J.
<Astrophys. J. Suppl. Ser., 247, 31 (2020)>
=2020ApJS..247...31L 2020ApJS..247...31L
ADC_Keywords: Galaxies, rotation; Morphology; Models
Keywords: Galaxy dark matter halos ; Galaxy dynamics ; Galaxy formation ;
Galaxy evolution ; Galaxy rotation curves ; Galaxy kinematics ;
Dark matter distribution ; Cold dark matter ; Spiral galaxies ;
Dwarf galaxies ; Late-type galaxies
Abstract:
We present rotation curve fits to 175 late-type galaxies from the
Spitzer Photometry and Accurate Rotation Curves database using seven
dark matter (DM) halo profiles: pseudo-isothermal, Burkert,
Navarro-Frenk-White (NFW), Einasto, Di Cintio+ (DC14;
2014MNRAS.441.2986D 2014MNRAS.441.2986D), cored-NFW, and a new semi-empirical profile
named Lucky13. We marginalize over the stellar mass-to-light ratio,
galaxy distance, disk inclination, halo concentration, and halo mass
(and an additional shape parameter for Einasto) using a Markov Chain
Monte Carlo method. We find that cored halo models, such as the DC14
and Burkert profiles, generally provide better fits to rotation curves
than the cuspy NFW profile. The stellar mass-halo mass relation from
abundance matching is recovered by all halo profiles once imposed as a
Bayesian prior, whereas the halo mass-concentration relation is not
reproduced in detail by any halo model.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 11 175 The 175 SPARC (Spitzer Photometry and Accurate
Rotation Curves database) late-type galaxies;
table added by CDS
table1.dat 152 2100 The best-fit parameters for the 175 SPARC galaxies
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See also:
J/ApJ/816/L14 : Tully-Fisher relation in galaxies from SPARC (Lelli+, 2016)
J/ApJ/827/L19 : Central surface densities in SPARC galaxies (Lelli+, 2016)
J/AJ/152/157 : Mass models for 175 disk galaxies with SPARC (Lelli+, 2016)
J/A+A/623/A123 : Einasto parameters for SPARC galaxies (Ghari+, 2019)
http://astroweb.case.edu/SPARC/ : SPARC home page
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy Name
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy Name
13- 24 A12 --- Model Dark matter halo profile (1)
26- 29 F4.2 Msun/Lsun Ydisk [0.1/4.3] Stellar mass-to-light ratio
for disks
31- 34 F4.2 Msun/Lsun e_Ydisk [0.01/0.6] Error on Ydisk
36- 39 F4.2 Msun/Lsun Ybul [0/2.1] Stellar mass-to-light ratio
for bulges
41- 44 F4.2 Msun/Lsun e_Ybul [0/0.3] Error on Ybul
46- 51 F6.2 Mpc Dist [0.02/129] Galaxy distance
53- 57 F5.2 Mpc e_Dist [0.05/15.1] Error in Dist
59- 62 F4.1 deg inc [5.4/90] Disk inclination
64- 67 F4.1 deg e_inc [0.6/14.3] Error in inc
69- 74 F6.2 km/s V200 [10/500] Rotation velocity at r200 (2)
76- 81 F6.2 km/s e_V200 [0.7/158] Error in V200
83- 88 F6.2 --- C200 [1/999.3] Halo concentration (2)
90- 95 F6.2 --- e_C200 [0.01/334.2] Error in C200
97-102 F6.2 kpc rs [0.02/672] Halo scale radius
104-111 F8.2 kpc e_rs [0.01/17815] Error in rs
113-117 F5.2 [Msun/pc3] log(rhos) [-5/3.3] Volume density of
dark matter halos
119-124 F6.2 [Msun/pc3] e_log(rhos) [0.06/271] Error in log(rhos)
126-130 F5.2 [Msun] log(M200) [8.5/13.6] Halo mass (2)
132-136 F5.2 [Msun] e_log(M200) [0.02/20.3] Error in log(M200)
138-141 F4.2 --- alpha [0/2] Shape parameter for
the Einasto model
143-146 F4.2 --- e_alpha [0/0.75] Error in alpha
148-152 F5.2 --- chi2 [0.02/36.6]? Reduced Χ2
(infinite when blank)
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Note (1): Model (see Section 2.2 for details) as follows:
Burkert-Flat = Burkert A. 1995ApJ...447L..25B 1995ApJ...447L..25B
DC14-Flat = Di Cintio+ 2014MNRAS.441.2986D 2014MNRAS.441.2986D (flat priors)
DC14-LCDM = Di Cintio+ 2014MNRAS.441.2986D 2014MNRAS.441.2986D (ΛCDM priors)
Einasto-Flat = Einasto 1965TrAlm...5...87E 1965TrAlm...5...87E (flat priors)
Einasto-LCDM = Einasto 1965TrAlm...5...87E 1965TrAlm...5...87E (ΛCDM priors)
Lucky13-Flat = new semi-empirical profile (flat priors)
Lucky13-LCDM = new semi-empirical profile (ΛCDM priors)
NFW-Flat = Navarro-Frenk-White (Navarro+ 1996ApJ...462..563N 1996ApJ...462..563N)
(flat priors)
NFW-LCDM = Navarro-Frenk-White (Navarro+ 1996ApJ...462..563N 1996ApJ...462..563N)
(ΛCDM priors)
coreNFW-Flat = Read et al. (2016MNRAS.459.2573R 2016MNRAS.459.2573R & 2016MNRAS.462.3628R 2016MNRAS.462.3628R)
(flat priors)
coreNFW-LCDM = Read et al. (2016MNRAS.459.2573R 2016MNRAS.459.2573R & 2016MNRAS.462.3628R 2016MNRAS.462.3628R)
(ΛCDM priors)
pISO-Flat = pseudo-isothermal profile (see e.g.,
Adams+ 2014ApJ...789...63A 2014ApJ...789...63A ; Oh+ 2015AJ....149..180O 2015AJ....149..180O)
Note (2): Defined at r200, the radius where the dark matter density
is 200 times the critical density of the Universe.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 08-Jun-2020