Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids

M. Alpaslan; Aaron Robotham; Danail Obreschkow; S.J. Penny; Simon Driver; P. Norberg; S. Brough; M.J.I. Brown; M.E. Cluver; B.W. Holwerda; A.M. Hopkins; E.V. Kampen; L.S. Kelvin; M.A. Lara-López; J. Liske; J.N. Loveday; S. Mahajan; K.A. Pimbblet

doi:10.1093/mnrasl/slu019

Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids

M. Alpaslan, Aaron Robotham, Danail Obreschkow, S.J. Penny, Simon Driver, P. Norberg, S. Brough, M.J.I. Brown, M.E. Cluver, B.W. Holwerda, A.M. Hopkins, E.V. Kampen, L.S. Kelvin, M.A. Lara-López, J. Liske, J.N. Loveday, S. Mahajan, K.A. Pimbblet

International Centre for Radio Astronomy Research (ICRAR)

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Abstract

Based on data from the Galaxy and Mass Assembly(GAMA)survey, we report on the discovery of structures that we refer to as 'tendrils' of galaxies: coherent, thin chains of galaxies that are rooted in filaments and terminate in neighbouring filaments or voids. On average, tendrils contain six galaxies and span 10 h-1 Mpc. We use the so-called line correlation function to prove that tendrils represent real structures rather than accidental alignments. We show that voids found in the Sloan Digital Sky Survey, 7th data release survey that overlap with GAMA regions contain a large number of galaxies, primarily belonging to tendrils. This implies that void sizes are strongly dependent on the number density and sensitivity limits of a survey. We caution that galaxies in low-density regions, which may be defined as 'void galaxies,' will have local galaxy number densities that depend on such observational limits and are likely higher than those can be directly measured. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Original language	English
Pages (from-to)	L106-L110
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	440
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slu019
Publication status	Published - 9 Mar 2014

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Alpaslan, M., Robotham, A., Obreschkow, D., Penny, S. J., Driver, S., Norberg, P., Brough, S., Brown, M. J. I., Cluver, M. E., Holwerda, B. W., Hopkins, A. M., Kampen, E. V., Kelvin, L. S., Lara-López, M. A., Liske, J., Loveday, J. N., Mahajan, S., & Pimbblet, K. A. (2014). Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids. Monthly Notices of the Royal Astronomical Society: Letters, 440(1), L106-L110. https://doi.org/10.1093/mnrasl/slu019

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title = "Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids",

abstract = "Based on data from the Galaxy and Mass Assembly(GAMA)survey, we report on the discovery of structures that we refer to as 'tendrils' of galaxies: coherent, thin chains of galaxies that are rooted in filaments and terminate in neighbouring filaments or voids. On average, tendrils contain six galaxies and span 10 h-1 Mpc. We use the so-called line correlation function to prove that tendrils represent real structures rather than accidental alignments. We show that voids found in the Sloan Digital Sky Survey, 7th data release survey that overlap with GAMA regions contain a large number of galaxies, primarily belonging to tendrils. This implies that void sizes are strongly dependent on the number density and sensitivity limits of a survey. We caution that galaxies in low-density regions, which may be defined as 'void galaxies,' will have local galaxy number densities that depend on such observational limits and are likely higher than those can be directly measured. {\textcopyright} 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.",

author = "M. Alpaslan and Aaron Robotham and Danail Obreschkow and S.J. Penny and Simon Driver and P. Norberg and S. Brough and M.J.I. Brown and M.E. Cluver and B.W. Holwerda and A.M. Hopkins and E.V. Kampen and L.S. Kelvin and M.A. Lara-L{\'o}pez and J. Liske and J.N. Loveday and S. Mahajan and K.A. Pimbblet",

year = "2014",

month = mar,

day = "9",

doi = "10.1093/mnrasl/slu019",

language = "English",

volume = "440",

pages = "L106--L110",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

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publisher = "Oxford University Press",

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Alpaslan, M, Robotham, A , Obreschkow, D, Penny, SJ, Driver, S, Norberg, P, Brough, S, Brown, MJI, Cluver, ME, Holwerda, BW, Hopkins, AM, Kampen, EV, Kelvin, LS, Lara-López, MA, Liske, J, Loveday, JN, Mahajan, S & Pimbblet, KA 2014, 'Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids', Monthly Notices of the Royal Astronomical Society: Letters, vol. 440, no. 1, pp. L106-L110. https://doi.org/10.1093/mnrasl/slu019

TY - JOUR

T1 - Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids

AU - Alpaslan, M.

AU - Robotham, Aaron

AU - Obreschkow, Danail

AU - Penny, S.J.

AU - Driver, Simon

AU - Norberg, P.

AU - Brough, S.

AU - Brown, M.J.I.

AU - Cluver, M.E.

AU - Holwerda, B.W.

AU - Hopkins, A.M.

AU - Kampen, E.V.

AU - Kelvin, L.S.

AU - Lara-López, M.A.

AU - Liske, J.

AU - Loveday, J.N.

AU - Mahajan, S.

AU - Pimbblet, K.A.

PY - 2014/3/9

Y1 - 2014/3/9

N2 - Based on data from the Galaxy and Mass Assembly(GAMA)survey, we report on the discovery of structures that we refer to as 'tendrils' of galaxies: coherent, thin chains of galaxies that are rooted in filaments and terminate in neighbouring filaments or voids. On average, tendrils contain six galaxies and span 10 h-1 Mpc. We use the so-called line correlation function to prove that tendrils represent real structures rather than accidental alignments. We show that voids found in the Sloan Digital Sky Survey, 7th data release survey that overlap with GAMA regions contain a large number of galaxies, primarily belonging to tendrils. This implies that void sizes are strongly dependent on the number density and sensitivity limits of a survey. We caution that galaxies in low-density regions, which may be defined as 'void galaxies,' will have local galaxy number densities that depend on such observational limits and are likely higher than those can be directly measured. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

AB - Based on data from the Galaxy and Mass Assembly(GAMA)survey, we report on the discovery of structures that we refer to as 'tendrils' of galaxies: coherent, thin chains of galaxies that are rooted in filaments and terminate in neighbouring filaments or voids. On average, tendrils contain six galaxies and span 10 h-1 Mpc. We use the so-called line correlation function to prove that tendrils represent real structures rather than accidental alignments. We show that voids found in the Sloan Digital Sky Survey, 7th data release survey that overlap with GAMA regions contain a large number of galaxies, primarily belonging to tendrils. This implies that void sizes are strongly dependent on the number density and sensitivity limits of a survey. We caution that galaxies in low-density regions, which may be defined as 'void galaxies,' will have local galaxy number densities that depend on such observational limits and are likely higher than those can be directly measured. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

U2 - 10.1093/mnrasl/slu019

DO - 10.1093/mnrasl/slu019

M3 - Article

SN - 1745-3925

VL - 440

SP - L106-L110

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids

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