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  The Wendelstein Weak Lensing (WWL) pathfinder: Accurate weak lensing masses for Planck clusters

Rehmann, R. L., Gruen, D., Seitz, S., Bender, R., Riffeser, A., Kluge, M., et al. (2019). The Wendelstein Weak Lensing (WWL) pathfinder: Accurate weak lensing masses for Planck clusters. Monthly Notices of the Royal Astronomical Society, 486(1), 77-100. doi:10.1093/mnras/stz817.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-E54F-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-E599-D
Genre: Journal Article

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Rehmann, R. L.1, Author              
Gruen, D., Author
Seitz, S.1, Author              
Bender, R.1, Author              
Riffeser, A.1, Author              
Kluge, M.2, Author              
Goessl, C., Author
Hopp, U.1, Author              
Mana, A., Author
Ries, C., Author
Schmidt, M., Author
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159888              

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 Abstract: We present results from the Wendelstein Weak Lensing (WWL) pathfinder project, in which we have observed three intermediate-redshift Planck clusters of galaxies with the new 30 arcmin × 30 arcmin wide field imager at the 2 m Fraunhofer Telescope at Wendelstein Observatory. We investigate the presence of biases in our shear catalogues and estimate their impact on our weak lensing mass estimates. The overall calibration uncertainty depends on the cluster redshift and is below 8.1–16 per cent for z ≈ 0.27–0.77. It will decrease with improvements on the background sample selection and the multiplicative shear bias calibration. We present the first weak lensing mass estimates for PSZ1 G109.88+27.94 and PSZ1 G139.61+24.20, two Sunyaev-Zeldovich (SZ)-selected cluster candidates. Based on Wendelstein colours and SDSS (Sloan Digital Sky Survey) photometry, we find that the redshift of PSZ1 G109.88+27.94 has to be corrected to z ≈ 0.77. We investigate the influence of line-of-sight structures on the weak lensing mass estimates and find upper limits for two groups in each of the fields of PSZ1 G109.88+27.94 and PSZ1 G186.98+38.66. We compare our results to SZ and dynamical mass estimates from the literature, and in the case of PSZ1 G186.98+38.66 to previous weak lensing mass estimates. We conclude that our pathfinder project demonstrates that weak lensing cluster masses can be accurately measured with the 2 m Fraunhofer Telescope.

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 Dates: 2019-03-20
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz817
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 486 (1) Sequence Number: - Start / End Page: 77 - 100 Identifier: ISSN: 1365-2966
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150