Cosmic web and galaxy filaments ElmoTempel

Leibniz-InstitutfürAstrophysikPotsdam(AIP),GermanyTartuObservatory,Estonia

KIAS2016

Luminosity density field in the SDSS

Courtesy:JuhanLiivamägi

Observations: selection effects

Tempeletal.(2012,2014) Liivamägi,Tempel,Saar(2012)

Observations: redshift space distortions

Tempeletal.(2012,2014,2016)

Usingfriends-of-friendsgalaxygroups,

wesuppressthefingers-of-Goddistortions.

Courtesy:Tullyetal.2014,Nature,513,71

Friends-of-Friends + multi-modal analysis

Tempeletal.(2016)

Local Universe (2MRS data)

2016,A&A,588,A14

FoF groups vs Tully groupsTempeletal.2016,A&A,588,A14

TullyR.Brent,2015,ApJ,149,171

Bisous model —detecting filamentary

patterns in point processes

Detected filamentary pattern

Courtesy:JuhanLiivamägi

Tempeletal.(2014)

Bisous model in action

Detected filament spines

Bisous model - publications:2013,“Evidenceforspinalignmentofspiralandelliptical/S0galaxiesinfilaments”,(TempelE.,StoicaR.S.,SaarE.;MNRAS,428,1827)

2013,“GalaxySpinAlignmentinFilamentsandSheets:ObservationalEvidence”(TempelE.,LibeskindN.I.;ApJL,775,42)

2014,“Orientationofcosmicwebfilamentswithrespecttotheunderlyingvelocityfield”(TempelE.,LibeskindN.I.,HoffmanY.,LiivamägiL.J.,TammA.;MNRAS,437,L11)

2014,“Detectingfilamentarypatterninthecosmicweb:acatalogueoffilamentsfortheSDSS”(TempelE.,StoicaR.S.,MartínezV.J.,LiivamägiL.J.,CastellanG.,SaarE.;MNRAS,438,3465)

2014,“Galaxyfilamentsaspearlnecklaces”(TempelE.,KipperR.,SaarE.,BussovM.,HektorA.,PeltJ.;A&A,572,A8)

2015,“GalaxiesinFilamentshaveMoreSatellites:TheInfluenceoftheCosmicWebontheSatelliteLuminosityFunctionintheSDSS”(GuoQ.,TempelE.,LibeskindN.I.;ApJ,800,112)

2015,“GalaxypairsalignwithGalacticfilaments”(TempelE.,TammA.;A&A,576,L5)

2015,“Thealignmentofsatellitegalaxiesandcosmicfilaments:observationsandsimulations”(TempelE.,GuoQ.,KipperR.,LibeskindN.I.;MNRAS,450,2727)

2015,“Missingbaryonstracedbythegalaxyluminositydensityinthelarge-scaleWHIMfilaments”(NevalainenJ.,TempelE.,LiivamägiL.J.etal.;A&A,538,A142)

2015,“Filamentsfromthegalaxydistributionandfromthevelocityfieldinthelocaluniverse”(LibeskindN.I.,TempelE.,HoffmanY.,TullyR.B.,CourtoisH.;MNRAS,453,L108)

2016,“ApossibleChandraandHubbleSpaceTelescopedetectionofextragalacticWHIMtowardsPG1116+215”(BonamenteM.,NevalainenJ.,TiltonE.,LiivamägiJ.,TempelE.,HeinämäkiP.,FangT.;MNRAS,457,4236)

2016,“Thealignmentofgalaxyspinwiththeshearfieldinobservations”(PahwaI.,LibeskindN.I.,TempelE.etal.;MNRAS,457,695)

2016,“Bisousmodel-Detectingfilamentarypatternsinpointprocesses”(TempelE.,StoicaR.S.,KipperR,SaarE.;A&C,16,17)

Orientation of cosmic web filaments with respect to the underlying velocity field

Tempel,Libeskind,Hoffmannetal.(2014)

Filaments from the galaxy distribution and from the velocity field in the local universe

Libeskind,Tempel,Hoffman,Tully,Courtois(2015)

FilamentsintheSDSS

The alignment of galaxies

in filaments

Galaxies in filaments have more satellites: the influence of the cosmic web on the satellite luminosity function in the SDSS

Guo,Tempel&Libeskind(2015)

Satelliteluminositywithrespecttocentralgalaxy

Num

berofsatellites

The alignment of satellite galaxies and cosmic filaments: observations and simulations

Tempel,Guo,Kipper,Libeskind(2015)

Anglebetweenthesatellitepositionandfilamentaxis

SDSSobservations Millenniumsimulation

Galaxy Spin Alignment in Filaments: Observational Evidence

Tempel&Libeskind(2013);Tempel,Stoica&Saar(2013)

SpiralgalaxiesEllipticalgalaxies

Innerpart

Galaxy pairs align with galactic filaments Tempel&Tamm(2015)

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Conclusions

Galaxy filaments have a measurable effect on the evolution of galaxies

Mysterious object

Thank you!