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

Alpaslan, Mehmet, Robotham, Aaron S. G., Obreschkow, Danail, Penny, Samantha, Driver, Simon, Norberg, Peder, Brough, Sarah, Brown, Michael, Cluver, Michelle, Holwerda, Benne, Hopkins, Andrew M., Kampen, Eelco van, Kelvin, Lee S., Lara-Lopez, Maritza A., Liske, Jochen, Loveday, Jon, Mahajan, Smriti and Pimbblet, Kevin (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. doi:10.1093/mnrasl/slu019

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Author Alpaslan, Mehmet
Robotham, Aaron S. G.
Obreschkow, Danail
Penny, Samantha
Driver, Simon
Norberg, Peder
Brough, Sarah
Brown, Michael
Cluver, Michelle
Holwerda, Benne
Hopkins, Andrew M.
Kampen, Eelco van
Kelvin, Lee S.
Lara-Lopez, Maritza A.
Liske, Jochen
Loveday, Jon
Mahajan, Smriti
Pimbblet, Kevin
Title Galaxy and Mass Assembly (GAMA): fine filaments of galaxies detected within voids
Journal name Monthly Notices of the Royal Astronomical Society: Letters   Check publisher's open access policy
ISSN 1745-3933
1745-3925
Publication date 2014-05-01
Year available 2014
Sub-type Article (original research)
DOI 10.1093/mnrasl/slu019
Open Access Status File (Publisher version)
Volume 440
Issue 1
Start page L106
End page L110
Total pages 5
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Collection year 2015
Language eng
Formatted 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.
Keyword Methods
Data analysis
Surveys
Large-scale structure of Universe
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2015 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 21 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 21 times in Scopus Article | Citations
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