The scaling relations of early-type dwarf galaxies across a range of environments

Samantha J. Penny; Joachim Janz; Duncan A. Forbes; Andrew J. Benson; Jeremy Mould

doi:10.1093/mnras/stv1850

The scaling relations of early-type dwarf galaxies across a range of environments

Samantha J. Penny, Joachim Janz, Duncan A. Forbes, Andrew J. Benson, Jeremy Mould

Institute of Cosmology & Gravitation

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Abstract

We present the results of a Keck-ESI study of dwarf galaxies across a range of environment: the Perseus Cluster, the Virgo Cluster, the NGC 1407 group, and the NGC 1023 group. Eighteen dEs are targeted for spectroscopy, three for the first time. We confirm cluster membership for one Virgo dE, and group membership for one dE in the NGC 1023 group, and one dE in the NGC 1407 group for the first time. Regardless of environment, the dEs follow the same size-magnitude and $\sigma$-luminosity relation. Two of the Virgo dwarfs, VCC 1199 and VCC 1627, have among the highest central velocity dispersions ($\sigma_{0}$ = 58.4 km s$^{-1}$ and 49.2 km s$^{-1}$) measured for dwarfs of their luminosity ($M_{R}\approx -17$). Given their small sizes ($R_{e}

Original language	English
Pages (from-to)	3635-3648
Journal	Monthly Notices of the Royal Astronomical Society
Volume	453
Issue number	4
Early online date	9 Sept 2015
DOIs	https://doi.org/10.1093/mnras/stv1850
Publication status	Published - 2015

Keywords

astro-ph.GA
galaxies: dwarf
galaxies: evolution
galaxies: kinematics and dynamics

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10.1093/mnras/stv1850

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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Cite this

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title = "The scaling relations of early-type dwarf galaxies across a range of environments",

abstract = "We present the results of a Keck-ESI study of dwarf galaxies across a range of environment: the Perseus Cluster, the Virgo Cluster, the NGC 1407 group, and the NGC 1023 group. Eighteen dEs are targeted for spectroscopy, three for the first time. We confirm cluster membership for one Virgo dE, and group membership for one dE in the NGC 1023 group, and one dE in the NGC 1407 group for the first time. Regardless of environment, the dEs follow the same size-magnitude and $\sigma$-luminosity relation. Two of the Virgo dwarfs, VCC 1199 and VCC 1627, have among the highest central velocity dispersions ($\sigma_{0}$ = 58.4 km s$^{-1}$ and 49.2 km s$^{-1}$) measured for dwarfs of their luminosity ($M_{R}\approx -17$). Given their small sizes ($R_{e}",

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note = "15 pages, 8 figures, 5 tables. Accepted for publication in MNRAS",

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pages = "3635--3648",

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AU - Penny, Samantha J.

AU - Janz, Joachim

AU - Forbes, Duncan A.

AU - Benson, Andrew J.

AU - Mould, Jeremy

N1 - 15 pages, 8 figures, 5 tables. Accepted for publication in MNRAS

PY - 2015

Y1 - 2015

N2 - We present the results of a Keck-ESI study of dwarf galaxies across a range of environment: the Perseus Cluster, the Virgo Cluster, the NGC 1407 group, and the NGC 1023 group. Eighteen dEs are targeted for spectroscopy, three for the first time. We confirm cluster membership for one Virgo dE, and group membership for one dE in the NGC 1023 group, and one dE in the NGC 1407 group for the first time. Regardless of environment, the dEs follow the same size-magnitude and $\sigma$-luminosity relation. Two of the Virgo dwarfs, VCC 1199 and VCC 1627, have among the highest central velocity dispersions ($\sigma_{0}$ = 58.4 km s$^{-1}$ and 49.2 km s$^{-1}$) measured for dwarfs of their luminosity ($M_{R}\approx -17$). Given their small sizes ($R_{e}

AB - We present the results of a Keck-ESI study of dwarf galaxies across a range of environment: the Perseus Cluster, the Virgo Cluster, the NGC 1407 group, and the NGC 1023 group. Eighteen dEs are targeted for spectroscopy, three for the first time. We confirm cluster membership for one Virgo dE, and group membership for one dE in the NGC 1023 group, and one dE in the NGC 1407 group for the first time. Regardless of environment, the dEs follow the same size-magnitude and $\sigma$-luminosity relation. Two of the Virgo dwarfs, VCC 1199 and VCC 1627, have among the highest central velocity dispersions ($\sigma_{0}$ = 58.4 km s$^{-1}$ and 49.2 km s$^{-1}$) measured for dwarfs of their luminosity ($M_{R}\approx -17$). Given their small sizes ($R_{e}

KW - astro-ph.GA

KW - galaxies: dwarf

KW - galaxies: evolution

KW - galaxies: kinematics and dynamics

U2 - 10.1093/mnras/stv1850

DO - 10.1093/mnras/stv1850

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SN - 0035-8711

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JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

The scaling relations of early-type dwarf galaxies across a range of environments

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Keywords

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