Measuring the cosmic bulk flow with 6dFGSv

Christina Magoulas; Christopher Springob; Matthew Colless; Jeremy Mould; John Lucey; Pirin Erdoǧdu; D Heath Jones

doi:10.1017/S1743921316010115

Measuring the cosmic bulk flow with 6dFGSv

Christina Magoulas
, Christopher Springob
, Matthew Colless
, Jeremy Mould
, John Lucey
, Pirin Erdoǧdu
, D Heath Jones

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

7 Citations (Scopus)

Abstract

While recent years have seen rapid growth in the number of galaxy peculiar velocity measurements, disagreements remain about the extent to which the peculiar velocity field - a tracer of the large-scale distribution of mass - agrees with both ΛCDM expectations and with velocity field models derived from redshift surveys. The 6dF Galaxy Survey includes peculiar velocities for nearly 9 000 early-type galaxies (6dFGSv), making it the largest and most homogeneous galaxy peculiar velocity sample to date. We have used the 6dFGS velocity field to determine the amplitude and scale of large-scale cosmic flows in the local universe and test standard cosmological models. We also compare the galaxy density and peculiar velocity fields to establish the distribution of dark and luminous matter and better constrain key cosmological parameters such as the redshift-space distortion parameter.

Original language	English
Title of host publication	Proceedings of the 308th Symposium of the International Astronomical Union
Subtitle of host publication	The Zeldovich Universe: Genesis and Growth of the Cosmic Web
Editors	Rien van de Weygaert, Sergei Shandarin, Enn Saar, Jaan Einasto
Place of Publication	Cambridge UK
Publisher	Cambridge University Press
Pages	336-339
Number of pages	4
ISBN (Print)	9781107078604
DOIs	https://doi.org/10.1017/S1743921316010115
Publication status	Published - 2016
Event	The Zeldovich Universe: Genesis and Growth of the Cosmic Web - Tallinn University Conference Centre, Talinn, Estonia Duration: 23 Jun 2014 → 28 Jun 2014 https://web.archive.org/web/20140419194514/http://iau.maido.ee/

Publication series

Name	IAU Symposium Proceedings Series
Publisher	Cambridge University Press
ISSN (Print)	1743-9213

Conference

Conference	The Zeldovich Universe
Abbreviated title	IAU Symposium 308
Country/Territory	Estonia
City	Talinn
Period	23/06/14 → 28/06/14
Internet address	https://web.archive.org/web/20140419194514/http://iau.maido.ee/

Keywords

cosmology: observations - distance scale - large-scale structure of universe
galaxies: distances and redshifts

Access to Document

10.1017/S1743921316010115

Cite this

Magoulas, C., Springob, C., Colless, M., Mould, J., Lucey, J., Erdoǧdu, P., & Jones, D. H. (2016). Measuring the cosmic bulk flow with 6dFGSv. In R. van de Weygaert, S. Shandarin, E. Saar, & J. Einasto (Eds.), Proceedings of the 308th Symposium of the International Astronomical Union: The Zeldovich Universe: Genesis and Growth of the Cosmic Web (pp. 336-339). (IAU Symposium Proceedings Series). Cambridge University Press. https://doi.org/10.1017/S1743921316010115

Magoulas, Christina ; Springob, Christopher ; Colless, Matthew et al. / Measuring the cosmic bulk flow with 6dFGSv. Proceedings of the 308th Symposium of the International Astronomical Union: The Zeldovich Universe: Genesis and Growth of the Cosmic Web. editor / Rien van de Weygaert ; Sergei Shandarin ; Enn Saar ; Jaan Einasto. Cambridge UK : Cambridge University Press, 2016. pp. 336-339 (IAU Symposium Proceedings Series).

@inproceedings{841ba54abcfe4a69abe85379cdffdcbc,

title = "Measuring the cosmic bulk flow with 6dFGSv",

abstract = "While recent years have seen rapid growth in the number of galaxy peculiar velocity measurements, disagreements remain about the extent to which the peculiar velocity field - a tracer of the large-scale distribution of mass - agrees with both ΛCDM expectations and with velocity field models derived from redshift surveys. The 6dF Galaxy Survey includes peculiar velocities for nearly 9 000 early-type galaxies (6dFGSv), making it the largest and most homogeneous galaxy peculiar velocity sample to date. We have used the 6dFGS velocity field to determine the amplitude and scale of large-scale cosmic flows in the local universe and test standard cosmological models. We also compare the galaxy density and peculiar velocity fields to establish the distribution of dark and luminous matter and better constrain key cosmological parameters such as the redshift-space distortion parameter.",

keywords = "cosmology: observations - distance scale - large-scale structure of universe, galaxies: distances and redshifts",

author = "Christina Magoulas and Christopher Springob and Matthew Colless and Jeremy Mould and John Lucey and Pirin Erdoǧdu and Jones, \{D Heath\}",

year = "2016",

doi = "10.1017/S1743921316010115",

language = "English",

isbn = "9781107078604",

series = "IAU Symposium Proceedings Series",

publisher = "Cambridge University Press",

pages = "336--339",

editor = "\{van de Weygaert\}, Rien and Sergei Shandarin and Enn Saar and Jaan Einasto",

booktitle = "Proceedings of the 308th Symposium of the International Astronomical Union",

address = "United Kingdom",

note = "The Zeldovich Universe : Genesis and Growth of the Cosmic Web, IAU Symposium 308 ; Conference date: 23-06-2014 Through 28-06-2014",

url = "https://web.archive.org/web/20140419194514/http://iau.maido.ee/",

}

Magoulas, C, Springob, C, Colless, M, Mould, J, Lucey, J, Erdoǧdu, P & Jones, DH 2016, Measuring the cosmic bulk flow with 6dFGSv. in R van de Weygaert, S Shandarin, E Saar & J Einasto (eds), Proceedings of the 308th Symposium of the International Astronomical Union: The Zeldovich Universe: Genesis and Growth of the Cosmic Web. IAU Symposium Proceedings Series, Cambridge University Press, Cambridge UK, pp. 336-339, The Zeldovich Universe, Talinn, Estonia, 23/06/14. https://doi.org/10.1017/S1743921316010115

Measuring the cosmic bulk flow with 6dFGSv. / Magoulas, Christina; Springob, Christopher; Colless, Matthew et al.
Proceedings of the 308th Symposium of the International Astronomical Union: The Zeldovich Universe: Genesis and Growth of the Cosmic Web. ed. / Rien van de Weygaert; Sergei Shandarin; Enn Saar; Jaan Einasto. Cambridge UK: Cambridge University Press, 2016. p. 336-339 (IAU Symposium Proceedings Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

TY - GEN

T1 - Measuring the cosmic bulk flow with 6dFGSv

AU - Magoulas, Christina

AU - Springob, Christopher

AU - Colless, Matthew

AU - Mould, Jeremy

AU - Lucey, John

AU - Erdoǧdu, Pirin

AU - Jones, D Heath

PY - 2016

Y1 - 2016

N2 - While recent years have seen rapid growth in the number of galaxy peculiar velocity measurements, disagreements remain about the extent to which the peculiar velocity field - a tracer of the large-scale distribution of mass - agrees with both ΛCDM expectations and with velocity field models derived from redshift surveys. The 6dF Galaxy Survey includes peculiar velocities for nearly 9 000 early-type galaxies (6dFGSv), making it the largest and most homogeneous galaxy peculiar velocity sample to date. We have used the 6dFGS velocity field to determine the amplitude and scale of large-scale cosmic flows in the local universe and test standard cosmological models. We also compare the galaxy density and peculiar velocity fields to establish the distribution of dark and luminous matter and better constrain key cosmological parameters such as the redshift-space distortion parameter.

AB - While recent years have seen rapid growth in the number of galaxy peculiar velocity measurements, disagreements remain about the extent to which the peculiar velocity field - a tracer of the large-scale distribution of mass - agrees with both ΛCDM expectations and with velocity field models derived from redshift surveys. The 6dF Galaxy Survey includes peculiar velocities for nearly 9 000 early-type galaxies (6dFGSv), making it the largest and most homogeneous galaxy peculiar velocity sample to date. We have used the 6dFGS velocity field to determine the amplitude and scale of large-scale cosmic flows in the local universe and test standard cosmological models. We also compare the galaxy density and peculiar velocity fields to establish the distribution of dark and luminous matter and better constrain key cosmological parameters such as the redshift-space distortion parameter.

KW - cosmology: observations - distance scale - large-scale structure of universe

KW - galaxies: distances and redshifts

UR - https://www.scopus.com/pages/publications/84991314212

U2 - 10.1017/S1743921316010115

DO - 10.1017/S1743921316010115

M3 - Conference Paper

AN - SCOPUS:84991314212

SN - 9781107078604

T3 - IAU Symposium Proceedings Series

SP - 336

EP - 339

BT - Proceedings of the 308th Symposium of the International Astronomical Union

A2 - van de Weygaert, Rien

A2 - Shandarin, Sergei

A2 - Saar, Enn

A2 - Einasto, Jaan

PB - Cambridge University Press

CY - Cambridge UK

T2 - The Zeldovich Universe

Y2 - 23 June 2014 through 28 June 2014

ER -

Magoulas C, Springob C, Colless M, Mould J, Lucey J, Erdoǧdu P et al. Measuring the cosmic bulk flow with 6dFGSv. In van de Weygaert R, Shandarin S, Saar E, Einasto J, editors, Proceedings of the 308th Symposium of the International Astronomical Union: The Zeldovich Universe: Genesis and Growth of the Cosmic Web. Cambridge UK: Cambridge University Press. 2016. p. 336-339. (IAU Symposium Proceedings Series). doi: 10.1017/S1743921316010115

Measuring the cosmic bulk flow with 6dFGSv

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Cite this