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The correlation between halo mass and stellar mass for the most massive galaxies in the universe

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Tojeiro_2017_AJ_HaloMass_FinalPubVersion.pdf (896.7Kb)
Date
20/04/2017
Author
Tinker, Jeremy L.
Brownstein, Joel R.
Guo, Hong
Leauthaud, Alexie
Maraston, Claudia
Masters, Karen
Montero-Dorta, Antonio D.
Thomas, Daniel
Tojeiro, Rita
Weiner, Benjamin
Zehavi, Idit
Olmstead, Matthew D.
Keywords
Cosmology: observations
Galaxies: abundances
Galaxies: evolution
Galaxies: halos
Galaxies: luminosity function, mass function
QB Astronomy
QC Physics
Astronomy and Astrophysics
Space and Planetary Science
3rd-DAS
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Abstract
We present measurements of the clustering of galaxies as a function of their stellar mass in the Baryon Oscillation Spectroscopic Survey. We compare the clustering of samples using 12 different methods for estimating stellar mass, isolating the method that has the smallest scatter at fixed halo mass. In this test, the stellar mass estimate with the smallest errors yields the highest amplitude of clustering at fixed number density. We find that the PCA stellar masses of Chen et al. clearly have the tightest correlation with halo mass. The PCA masses use the full galaxy spectrum, differentiating them from other estimates that only use optical photometric information. Using the PCA masses, we measure the large-scale bias as a function of M∗ for galaxies with log M∗ ≥ 11.4, correcting for incompleteness at the low-mass end of our measurements. Using the abundance matching ansatz to connect dark matter halo mass to stellar mass, we construct theoretical models of b (M∗) that match the same stellar mass function but have different amounts of scatter in stellar mass at fixed halo mass, σlog M∗. Using this approach, we find σlogM∗ =  0.18 -0.02 +0.01. This value includes both intrinsic scatter as well as random errors in the stellar masses. To partially remove the latter, we use repeated spectra to estimate statistical errors on the stellar masses, yielding an upper limit to the intrinsic scatter of 0.16 dex.
Citation
Tinker , J L , Brownstein , J R , Guo , H , Leauthaud , A , Maraston , C , Masters , K , Montero-Dorta , A D , Thomas , D , Tojeiro , R , Weiner , B , Zehavi , I & Olmstead , M D 2017 , ' The correlation between halo mass and stellar mass for the most massive galaxies in the universe ' , Astrophysical Journal , vol. 839 , no. 2 , 121 . https://doi.org/10.3847/1538-4357/aa6845
Publication
Astrophysical Journal
Status
Peer reviewed
DOI
https://doi.org/10.3847/1538-4357/aa6845
ISSN
0004-637X
Type
Journal article
Rights
© 2017 The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.3847/1538-4357/aa6845
Description
I.Z. is supported by NSF grant AST-1612085. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10951

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