DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: SDSS-IV MaNGA: the inner density slopes of nearby galaxies

Journal Article · · Monthly Notices of the Royal Astronomical Society
ORCiD logo [1];  [1]; ORCiD logo [2];  [3];  [3];  [3];  [4];  [5]; ORCiD logo [6];  [7]; ORCiD logo [8]; ORCiD logo [9];  [7];  [9]; ORCiD logo [10]
  1. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China, Key laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China, School of Astronomy and Space Science, University of Chinese Academy of Science, Beijing 100049, China
  2. Institute for Computational Cosmology, Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK
  3. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China, Key laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
  4. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China, Key laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China, School of Astronomy and Space Science, University of Chinese Academy of Science, Beijing 100049, China, Institute for Computational Cosmology, Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK
  5. Physics Department and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
  6. New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates
  7. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
  8. Physics Department and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China
  9. Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
  10. Department of Physics and Astronomy, University of Utah, 115 S. 1400 E., Salt Lake City, UT 84112, USA

ABSTRACT We derive the mass-weighted total density slopes within the effective (half-light) radius, γ′, for more than 2000 nearby galaxies from the SDSS-IV (Sloan Digital Sky Survey IV) MaNGA survey using Jeans-anisotropic-models applied to integral field unit observations. Our galaxies span a wide range of the stellar mass (109 M⊙ < M* < 1012 M⊙) and the velocity dispersion (30 km s−1 < σv < 300 km s−1). We find that for galaxies with velocity dispersion σv > 100 km s−1, the density slope has a mean value 〈γ′〉 = 2.24 and a dispersion σγ = 0.22, almost independent of velocity dispersion, consistent with previous lensing and stellar dynamical analysis. We also quantitatively confirm with high accuracy a turnover in the γ′–σv relation is present at σ ∼ 100 km s−1, below which the density slope decreases rapidly with σv, consistent with the results reported by previous analysis of $${\rm ATLAS^{\rm 3D}}$$ survey. Our analysis shows that a large fraction of dwarf galaxies (below M* = 1010 M⊙) have total density slopes shallower than 1, which implies that they may reside in cold dark matter haloes with shallow density slopes. We compare our results with that of galaxies in hydrodynamical simulations of EAGLE, Illustris, and IllustrisTNG projects, and find all simulations predict shallower density slopes for massive galaxies with high σv. Finally, we explore the dependence of γ′ on the positions of galaxies in haloes, namely centrals versus satellites, and find that for the same velocity dispersion, the amplitude of γ′ is higher for satellite galaxies by about 0.1.

Sponsoring Organization:
USDOE
OSTI ID:
1571323
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 490 Journal Issue: 2; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (84)

The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment journal April 2018
The unexpected diversity of dwarf galaxy rotation curves journal August 2015
Baryonic pinching of galactic dark matter halos journal December 2006
THE MASSIVE SURVEY. I. A VOLUME-LIMITED INTEGRAL-FIELD SPECTROSCOPIC STUDY OF THE MOST MASSIVE EARLY-TYPE GALAXIES WITHIN 108 Mpc journal October 2014
The Structure of Cold Dark Matter Halos journal May 1996
The sl2s Galaxy-Scale lens Sample. iv. the Dependence of the Total mass Density Profile of Early-Type Galaxies on Redshift, Stellar Mass, and size journal October 2013
The cores of dwarf galaxy haloes journal December 1996
Hα Rotation Curves: The Soft Core Question journal August 2002
Baryon effects on the internal structure of ΛCDM haloes in the EAGLE simulations journal June 2015
The Motions of Stars in a Kapteyn-Universe journal January 1922
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe journal June 2017
A Universal Density Profile from Hierarchical Clustering journal December 1997
No cores in dark matter-dominated dwarf galaxies with bursty star formation histories journal April 2019
High-Resolution Rotation Curves of Low Surface Brightness Galaxies. I. Data journal November 2001
CALIFA, the Calar Alto Legacy Integral Field Area survey: I. Survey presentation⋆ journal January 2012
Mass Models for Low Surface Brightness Galaxies with High‐Resolution Optical Velocity Fields journal April 2008
A mass-dependent density profile for dark matter haloes including the influence of galaxy formation journal May 2014
Forged in fire: cusps, cores and baryons in low-mass dwarf galaxies journal October 2015
The SAMI Galaxy Survey: instrument specification and target selection journal January 2015
The ATLAS3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation: The ATLAS3D project - VII. Morphology-density journal August 2011
The Multi-Object, Fiber-Fed Spectrographs for the Sloan Digital sky Survey and the Baryon Oscillation Spectroscopic Survey journal July 2013
The SLUGGS Survey: The Inner Dark Matter Density Slope of the Massive Elliptical Galaxy NGC 1407 journal August 2018
emcee : The MCMC Hammer
  • Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
  • Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925 https://doi.org/10.1086/670067
journal March 2013
High-Resolution Rotation Curves and Galaxy mass Models from Things journal November 2008
The removal of cusps from galaxy centres by stellar feedback in the early Universe journal August 2006
The ATLAS3D project – XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane journal May 2013
SDSS-IV MaNGA: global stellar population and gradients for about 2000 early-type and spiral galaxies on the mass–size plane journal February 2018
Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics journal October 2008
SDSS-IV/MaNGA: SPECTROPHOTOMETRIC CALIBRATION TECHNIQUE journal December 2015
On the Global mass Distribution in disk Galaxies journal March 2015
Assessing the Jeans Anisotropic Multi-Gaussian Expansion method with the Illustris simulation journal November 2015
First results from the IllustrisTNG simulations: the galaxy colour bimodality journal November 2017
Dark matter cores all the way down journal March 2016
Structure and Kinematics of Early-Type Galaxies from Integral Field Spectroscopy journal September 2016
The illustris simulation: Public data release journal November 2015
First results from the IllustrisTNG simulations: a tale of two elements – chemical evolution of magnesium and europium journal March 2018
OBSERVING STRATEGY FOR THE SDSS-IV/MaNGA IFU GALAXY SURVEY journal June 2015
Evidence for radial variations in the stellar mass-to-light ratio of massive galaxies from weak and strong lensing journal August 2018
The bulge–halo conspiracy in massive elliptical galaxies: implications for the stellar initial mass function and halo response to baryonic processes journal January 2014
Mass loss from dwarf spheroidal galaxies: the origins of shallow dark matter cores and exponential surface brightness profiles journal January 2005
The Luminosity Function and Stellar Evolution. journal January 1955
OVERVIEW OF THE SDSS-IV MaNGA SURVEY: MAPPING NEARBY GALAXIES AT APACHE POINT OBSERVATORY journal December 2014
NIHAO – IV: core creation and destruction in dark matter density profiles across cosmic time journal January 2016
How supernova feedback turns dark matter cusps into cores: Supernova feedback and dark matter cores journal March 2012
The Structure and Dynamics of Massive Early-Type Galaxies: on Homology, Isothermality, and Isotropy Inside one Effective Radius journal September 2009
Medium-resolution Isaac Newton Telescope library of empirical spectra journal September 2006
Contraction of dark matter galactic halos due to baryonic infall journal February 1986
Cusp-core transformations in dwarf galaxies: observational predictions journal January 2013
Galaxy Groups in the SDSS DR4. I. The Catalog and Basic Properties journal December 2007
SPIDER - I. Sample and galaxy parameters in the grizYJHK wavebands: SPIDER - I. Sample and data analysis journal September 2010
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies journal December 2017
Dark matter and IMF normalization in Virgo dwarf early-type galaxies journal November 2015
The vertical structure of gaseous galaxy discs in cold dark matter haloes journal September 2017
The Sloan lens acs Survey. x. Stellar, Dynamical, and Total mass Correlations of Massive Early-Type Galaxies journal November 2010
Efficient multi-Gaussian expansion of galaxies journal June 2002
Maximum feedback and dark matter profiles of dwarf galaxies journal June 2002
Dark matter heats up in dwarf galaxies journal January 2019
The Manga Integral Field unit Fiber feed System for the Sloan 2.5 m Telescope journal January 2015
The EAGLE project: simulating the evolution and assembly of galaxies and their environments journal November 2014
THE DATA REDUCTION PIPELINE FOR THE SDSS-IV MaNGA IFU GALAXY SURVEY journal September 2016
Luminous and dark Matter Profiles from Galaxies to Clusters: Bridging the gap with Group-Scale Lenses journal November 2015
First results from the IllustrisTNG simulations: matter and galaxy clustering journal December 2017
Adaptive spatial binning of integral-field spectroscopic data using Voronoi tessellations journal June 2003
NIHAO XX: the impact of the star formation threshold on the cusp–core transformation of cold dark matter haloes journal March 2019
Systematic trends in total-mass profiles from dynamical models of early-type galaxies journal January 2017
The core–cusp problem: a matter of perspective journal November 2017
The Seventh data Release of the Sloan Digital sky Survey journal May 2009
SDSS-IV MaNGA IFS GALAXY SURVEY—SURVEY DESIGN, EXECUTION, AND INITIAL DATA QUALITY journal November 2016
Properties of galaxies reproduced by a hydrodynamic simulation journal May 2014
Parametric Recovery of Line‐of‐Sight Velocity Distributions from Absorption‐Line Spectra of Galaxies via Penalized Likelihood journal February 2004
The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations journal April 2015
SPARC: MASS MODELS FOR 175 DISK GALAXIES WITH SPITZER PHOTOMETRY AND ACCURATE ROTATION CURVES journal November 2016
The dichotomy of dark matter fraction and total mass density slope of galaxies over five dex in mass journal August 2019
Light versus dark in strong-lens galaxies: dark matter haloes that are rounder than their stars journal December 2015
Systematic variations of central mass density slopes in early-type galaxies journal September 2014
Phase-space mixing and the merging of cusps journal July 2005
Introducing the Illustris Project: simulating the coevolution of dark and visible matter in the Universe journal August 2014
Observational and theoretical constraints on singular dark matter halos journal May 1994
Introducing the Illustris project: the evolution of galaxy populations across cosmic time journal September 2014
Response of Dark Matter Halos to Condensation of Baryons: Cosmological Simulations and Improved Adiabatic Contraction Model journal November 2004
First results from the IllustrisTNG simulations: radio haloes and magnetic fields journal August 2018
Improving the full spectrum fitting method: accurate convolution with Gauss–Hermite functions journal November 2016
The 2.5 m Telescope of the Sloan Digital Sky Survey journal April 2006
The SDSS-IV MaNGA Sample: Design, Optimization, and Usage Considerations journal August 2017