Environmental dependence of the galaxy stellar mass function in the Dark Energy Survey Science Verification Data
J. EtheringtonInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKD. ThomasSEPnet, South East Physics Network, (www.sepnet.ac.uk)Claudia MarastonSEPnet, South East Physics Network, (www.sepnet.ac.uk)I. Sevilla-NoarbeCentro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Complutense 40, E-28040 Madrid, SpainK. BechtolWisconsin IceCube Particle Astrophysics Center (WIPAC), Madison, WI 53703, USAJ. PforrAix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, F-13388 Marseille, FranceP. S. PellegriniLaboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilJ. GschwendObservatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilA. Carnero RosellObservatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilM. A. G. MaiaLaboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilL. N. da CostaLaboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilA. Benoit-LévyAstrophysics Group, Department of Physics and Astronomy, University College London, 132 Hampstead Road, London NW1 2PS, UKM. E. C. SwansonNational Center for Supercomputing Applications, 1205 West Clark St, Urbana, IL 61801, USAW G HartleyETH Zürich, Institut für Astronomie, Wolfgang-Pauli-Str. 27, CH-8093 Zürich, SwitzerlandT. M. C. AbbottCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileF. B. AbdallaDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKS. AllamFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAR. A. BernsteinCarnegie Observatories, 813 Santa Barbara St, Pasadena, CA 91101, USAE. BertinCNRS, UMR 7095, Institut d'Astrophysique de Paris, F-75014 Paris, FranceDavid BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKE. Buckley‐GeerFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAM. Carrasco KindNational Center for Supercomputing Applications, 1205 West Clark St, Urbana, IL 61801, USAJ. CarreteroInstitut de Ciències de l'Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Bellaterra, Barcelona, SpainF. J. CastanderInstitut de Ciències de l'Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Bellaterra, Barcelona, SpainM. CrocceInstitut de Ciències de l'Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Bellaterra, Barcelona, SpainC. E. CunhaKavli Institute for Particle Astrophysics and Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USAS. DesaiDepartment of Physics, IIT Hyderabad, Kandi, Telangana 502285, IndiaP. DoelDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKT. F. EiflerJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USAA. E. EvrardDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAA. Fausti NetoLaboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilD. A. FinleyFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAB. FlaugherFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAP. FosalbaInstitut de Ciències de l'Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Bellaterra, Barcelona, SpainJ. FriemanFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAD. W. GerdesDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAD. GruenKavli Institute for Particle Astrophysics and Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USAR. A. GruendlDepartment of Astronomy, University of Illinois, 1002 W. Green Street, Urbana, IL 61801, USAG. GutiérrezFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAK. HonscheidCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAD. J. JamesCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileK. KuehnAustralian Astronomical Observatory, North Ryde, NSW 2113, AustraliaN. KuropatkinFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAO. LahavDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKM. LimaDepartment of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140, South AfricaPaul MartiniDepartment of Astronomy, The Ohio State University, Columbus, OH 43210, USAP. MelchiorDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USAR. MiquelInstitució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, SpainJ. J. MohrExcellence Cluster Universe, Boltzmannstr. 2, D-85748 Garching, GermanyB. NordFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAR. L. C. OgandoObservatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilA. A. PlazasJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USAA. K. RomerDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UKE. S. RykoffSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAE. SánchezCentro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Complutense 40, E-28040 Madrid, SpainV. ScarpineFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAM. SchubnellDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAR. C. SmithCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileM. Soares-SantosFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAF. SobreiraLaboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ 20921-400, BrazilG. TarléDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAV. VikramArgonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USAA. R. WalkerCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileY. ZhangFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA
2016en
ABI
Abstract
Measurements of the galaxy stellar mass function are crucial to understand the formation of galaxies in the Universe. In a hierarchical clustering paradigm it is plausible that there is a connection between the properties of galaxies and their environments. Evidence for environmental trends has been established in the local Universe. The Dark Energy Survey (DES) provides large photometric datasets that enable further investigation of the assembly of mass. In this study we use ~3.2 million galaxies from the (South Pole Telescope) SPT-East field in the DES science verification (SV) dataset. From grizY photometry we derive galaxy stellar masses and absolute magnitudes, and determine the errors on these properties using Monte-Carlo simulations using the full photometric redshift probability distributions. We compute galaxy environments using a fixed conical aperture for a range of scales. We construct galaxy environment probability distribution functions and investigate the dependence of the environment errors on the aperture parameters. We compute the environment components of the galaxy stellar mass function for the redshift range 0.15<z<1.05. For z<0.75 we find that the fraction of massive galaxies is larger in high density environment than in low density environments. We show that the low density and high density components converge with increasing redshift up to z~1.0 where the shapes of the mass function components are indistinguishable. Our study shows how high density structures build up around massive galaxies through cosmic time.
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Citations and references
Cited by 20 references