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Title: SHαDE: survey description and mass–kinematics scaling relations for dwarf galaxies

Abstract

ABSTRACT The Study of H α from Dwarf Emissions (SHαDE) is a high spectral resolution (R = 13 500) H α integral field survey of 69 dwarf galaxies with stellar masses 106 < M⋆ < 109 M⊙. The survey used FLAMES on the ESO Very Large Telescope. SHαDE is designed to study the kinematics and stellar populations of dwarf galaxies using consistent methods applied to massive galaxies and at matching level of detail, connecting these mass ranges in an unbiased way. In this paper, we set out the science goals of SHαDE, describe the sample properties, outline the data reduction, and analysis processes. We investigate the log M⋆–log S0.5 mass–kinematics scaling relation, which has previously shown potential for combining galaxies of all morphologies in a single scaling relation. We extend the scaling relation from massive galaxies to dwarf galaxies, demonstrating this relation is linear down to a stellar mass of M⋆ ∼ 108.6 M⊙. Below this limit, the kinematics of galaxies inside one effective radius appears to be dominated by the internal velocity dispersion limit of the H α-emitting gas, giving a bend in the log M⋆–log S0.5 relation. Replacing stellar mass with total baryonic mass using gas mass estimate reduces the severity but does not remove the linearity limitmore » of the scaling relation. An extrapolation to estimate the galaxies’ dark matter halo masses, yields a log Mh–log S0.5 scaling relation that is free of any bend, has reduced curvature over the whole mass range, and brings galaxies of all masses and morphologies on to the virial relation.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3];  [4]; ORCiD logo [5]
  1. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia, ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia
  2. Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, Gent B-9000, Belgium
  3. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia, School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia
  4. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia, ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia, International Centre for Radio Astronomy Research (ICRAR), University of Western Australia, Crawley, WA 6009, Australia
  5. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia, International Centre for Radio Astronomy Research (ICRAR), University of Western Australia, Crawley, WA 6009, Australia
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1670498
Resource Type:
Journal Article: Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 498 Journal Issue: 4; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Barat, Dilyar, D’Eugenio, Francesco, Colless, Matthew, Sweet, Sarah M., Groves, Brent, and Cortese, Luca. SHαDE: survey description and mass–kinematics scaling relations for dwarf galaxies. United Kingdom: N. p., 2020. Web. doi:10.1093/mnras/staa2716.
Barat, Dilyar, D’Eugenio, Francesco, Colless, Matthew, Sweet, Sarah M., Groves, Brent, & Cortese, Luca. SHαDE: survey description and mass–kinematics scaling relations for dwarf galaxies. United Kingdom. doi:10.1093/mnras/staa2716.
Barat, Dilyar, D’Eugenio, Francesco, Colless, Matthew, Sweet, Sarah M., Groves, Brent, and Cortese, Luca. Mon . "SHαDE: survey description and mass–kinematics scaling relations for dwarf galaxies". United Kingdom. doi:10.1093/mnras/staa2716.
@article{osti_1670498,
title = {SHαDE: survey description and mass–kinematics scaling relations for dwarf galaxies},
author = {Barat, Dilyar and D’Eugenio, Francesco and Colless, Matthew and Sweet, Sarah M. and Groves, Brent and Cortese, Luca},
abstractNote = {ABSTRACT The Study of H α from Dwarf Emissions (SHαDE) is a high spectral resolution (R = 13 500) H α integral field survey of 69 dwarf galaxies with stellar masses 106 < M⋆ < 109 M⊙. The survey used FLAMES on the ESO Very Large Telescope. SHαDE is designed to study the kinematics and stellar populations of dwarf galaxies using consistent methods applied to massive galaxies and at matching level of detail, connecting these mass ranges in an unbiased way. In this paper, we set out the science goals of SHαDE, describe the sample properties, outline the data reduction, and analysis processes. We investigate the log M⋆–log S0.5 mass–kinematics scaling relation, which has previously shown potential for combining galaxies of all morphologies in a single scaling relation. We extend the scaling relation from massive galaxies to dwarf galaxies, demonstrating this relation is linear down to a stellar mass of M⋆ ∼ 108.6 M⊙. Below this limit, the kinematics of galaxies inside one effective radius appears to be dominated by the internal velocity dispersion limit of the H α-emitting gas, giving a bend in the log M⋆–log S0.5 relation. Replacing stellar mass with total baryonic mass using gas mass estimate reduces the severity but does not remove the linearity limit of the scaling relation. An extrapolation to estimate the galaxies’ dark matter halo masses, yields a log Mh–log S0.5 scaling relation that is free of any bend, has reduced curvature over the whole mass range, and brings galaxies of all masses and morphologies on to the virial relation.},
doi = {10.1093/mnras/staa2716},
journal = {Monthly Notices of the Royal Astronomical Society},
issn = {0035-8711},
number = 4,
volume = 498,
place = {United Kingdom},
year = {2020},
month = {9}
}

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The Baryonic Tully-Fisher Relation of Gas-Rich Galaxies as a test of Λcdm and mond
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LITTLE THINGS in 3D: robust determination of the circular velocity of dwarf irregular galaxies.
journal, December 2016

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The size distribution of galaxies in the Sloan Digital Sky Survey
journal, August 2003


The distribution of atomic gas and dust in nearby galaxies - III. Radial distributions and metallicity gradients
journal, June 2004


The host in blue compact galaxies.: Structural properties and scaling relations
journal, May 2009


Quantifying the impact of mergers on the angular momentum of simulated galaxies
journal, October 2017

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Toward accurate radial velocities with the fiber-fed GIRAFFE multi-object VLT spectrograph
conference, December 2002

  • Royer, Frederic; Blecha, Andre; North, Pierre
  • Astronomical Telescopes and Instrumentation, SPIE Proceedings
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Constraints on the Relationship Between Stellar mass and halo mass at low and high Redshift
journal, January 2010

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The H I Tully-Fisher relation of early-type galaxies
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Small Scatter and Nearly Isothermal mass Profiles to four Half-Light Radii from Two-Dimensional Stellar Dynamics of Early-Type Galaxies
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Rotational Dynamics and star Formation in the Nearby Dwarf Galaxy ngc 5238
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Sdss-Iii: Massive Spectroscopic Surveys of the Distant Universe, the Milky way, and Extra-Solar Planetary Systems
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An Exploration of the Tully-Fisher Relation for Extreme Late-Type Spiral Galaxies
journal, November 1998

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What drives the velocity dispersion of ionized gas in star-forming galaxies?
journal, April 2019

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Rotational Widths for Use in the Tully-Fisher Relation. I. Long-Slit Spectroscopic Data
journal, September 2005

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Pipe3D stellar and gaseous velocity dispersions for CALIFA Galaxies
journal, October 2018

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Efficient multi-Gaussian expansion of galaxies
journal, June 2002


Focal ratio degradation in lightly fused hexabundles
journal, December 2013

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A Survey of Galaxy Kinematics to z ∼1 in the TKRS/GOODS‐N Field. I. Rotation and Dispersion Properties
journal, December 2006

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Revisiting the Integrated Star Formation Law. I. Non-starbursting Galaxies
journal, February 2019

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The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence
journal, May 2020

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The Gaia mission
journal, November 2016


The low-mass end of the baryonic Tully–Fisher relation
journal, September 2016

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The EAGLE project: simulating the evolution and assembly of galaxies and their environments
journal, November 2014

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Mass Transport and Turbulence in Gravitationally Unstable disk Galaxies. i. the case of pure Self-Gravity
journal, November 2015

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Galaxy And Mass Assembly (GAMA): Structural Investigation of Galaxies via Model Analysis
journal, March 2012

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The SAMI Galaxy Survey: the link between angular momentum and optical morphology
journal, August 2016

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NIHAO VI. The hidden discs of simulated galaxies
journal, March 2016

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Physical Conditions in the Interstellar Medium of Intensely Star-Forming Galaxies at Redshift∼2
journal, June 2009


The Tully–Fisher and mass–size relations from halo abundance matching
journal, September 2015

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What controls the ionized gas turbulent motions in dwarf galaxies?
journal, April 2015

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The Romulus cosmological simulations: a physical approach to the formation, dynamics and accretion models of SMBHs
journal, May 2017

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Is the dark-matter halo spin a predictor of galaxy spin and size?
journal, July 2019

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Star Formation in AEGIS Field Galaxies since z  = 1.1: The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-forming Galaxies
journal, April 2007

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High-Resolution mass Models of Dwarf Galaxies from Little Things
journal, May 2015


Comparing galaxy formation in semi-analytic models and hydrodynamical simulations
journal, October 2017

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LESS THAN 10 PERCENT OF STAR FORMATION IN z ∼ 0.6 MASSIVE GALAXIES IS TRIGGERED BY MAJOR INTERACTIONS
journal, September 2009


Kinematic structure of the 30 Doradus giant H II region
journal, April 1994

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Evolution of the angular momentum of protogalaxies from tidal torques: Zel'dovich approximation
journal, September 1996

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Flux-calibrated stellar population models of Lick absorption-line indices with variable element abundance ratios: Stellar population models of Lick indices
journal, January 2011

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A statistical investigation of the mass discrepancy–acceleration relation
journal, October 2016

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A flux-calibrated, high-resolution atlas of optical sky emission from UVES
journal, September 2003


Improving the full spectrum fitting method: accurate convolution with Gauss–Hermite functions
journal, November 2016

  • Cappellari, Michele
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Accretion-driven turbulence as universal process: galaxies, molecular clouds, and protostellar disks
journal, September 2010


The Origin of the Mass‐Metallicity Relation: Insights from 53,000 Star‐forming Galaxies in the Sloan Digital Sky Survey
journal, October 2004

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Little Things
journal, October 2012