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Author
dc.contributor.author
Hirata, C M 
Author
dc.contributor.author
Mandelbaum, R 
Author
dc.contributor.author
Seliak, U 
Author
dc.contributor.author
Guzik, J 
Author
dc.contributor.author
Padmanabhan, N 
Author
dc.contributor.author
Blake, C 
Author
dc.contributor.author
Brinkmann, J 
Author
dc.contributor.author
Budavari, T 
Author
dc.contributor.author
Connolly, A 
Author
dc.contributor.author
Csabai, I 
Availability Date
dc.date.accessioned
2020-08-08T20:20:02Z
Availability Date
dc.date.available
2020-08-08T20:20:02Z
Release
dc.date.issued
2004
uri
dc.identifier.uri
http://hdl.handle.net/10831/49232
Abstract
dc.description.abstract
Galaxy-galaxy lensing has emerged as a powerful probe of the dark matter haloes of galaxies, but is subject to contamination if intrinsically aligned satellites of the lens galaxy are used as part of the source sample. We present a measurement of this intrinsic shear using 200 747 lens galaxies from the Sloan Digital Sky Survey (SDSS) spectroscopic sample and a sample of satellites selected using photometric redshifts. The mean intrinsic shear at transverse separations of 30-446 h(-1) kpc is constrained to be -0.0062 < Delta gamma < +0.0066 (99.9 per cent confidence, including identified systematics), which limits contamination of the galaxy-galaxy lensing signal to at most similar to15 per cent on these scales. We present these limits as a function of transverse separation and lens luminosity. We furthermore investigate shear calibration biases in the SDSS, which can also affect galaxy-galaxy lensing, and conclude that the shear amplitude is calibrated to better than 18 per cent. This includes noise-induced calibration biases in the ellipticity, which are small for the sample considered here, but which can be more important if low signal-to-noise ratio or poorly resolved source galaxies are used.
Language
dc.language
Angol
Title
dc.title
Galaxy-galaxy weak lensing in the Sloan Digital Sky Survey: intrinsic alignments and shear calibration errors
Type
dc.type
folyóiratcikk
Date Change
dc.date.updated
2020-06-05T12:20:49Z
Scope
dc.format.page
529-549
Doi ID
dc.identifier.doi
10.1111/j.1365-2966.2004.08090.x
Wos ID
dc.identifier.wos
000224054100016
ID Scopus
dc.identifier.scopus
4544375971
MTMT ID
dc.identifier.mtmt
1064336
Issue Number
dc.identifier.issue
2
abbreviated journal
dc.identifier.jabbrev
MON NOT R ASTRON SOC
Journal
dc.identifier.jtitle
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume Number
dc.identifier.volume
353
Release Date
dc.description.issuedate
2004
department of Author
dc.contributor.institution
Alba Regia Egyetemi Központ
department of Author
dc.contributor.institution
Fizikai Intézet
department of Author
dc.contributor.institution
Mérnöki Intézet
department of Author
dc.contributor.institution
Komplex Rendszerek Fizikája Tanszék
Author institution
dc.contributor.department
Komplex Rendszerek Fizikája Tanszék


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Galaxy-galaxy weak lensing in the Sloan Digital Sky Survey: intrinsic alignments and shear calibration errors
 

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