Constraining MOND using the vertical motion of stars in the solar neighbourhood

Ben Margalit; Nir J. Shaviv

doi:10.1093/mnras/stv2721

Constraining MOND using the vertical motion of stars in the solar neighbourhood

Ben Margalit, Nir J. Shaviv

Racah Institute of Physics

The Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

Abstract

Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.

Original language	English
Pages (from-to)	1163-1171
Number of pages	9
Journal	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume	456
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stv2721
State	Published - 2016

Keywords

Galaxy: disc
Galaxy: kinematics and dynamics
Solar neighbourhood

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/stv2721

Cite this

@article{a00317bdfc2f4228aa471fae0dccb042,

title = "Constraining MOND using the vertical motion of stars in the solar neighbourhood",

abstract = "Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.",

keywords = "Galaxy: disc, Galaxy: kinematics and dynamics, Solar neighbourhood",

author = "Ben Margalit and Shaviv, \{Nir J.\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors. Published by Oxford University Press.",

year = "2016",

doi = "10.1093/mnras/stv2721",

language = "الإنجليزيّة",

volume = "456",

pages = "1163--1171",

journal = "MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

TY - JOUR

T1 - Constraining MOND using the vertical motion of stars in the solar neighbourhood

AU - Margalit, Ben

AU - Shaviv, Nir J.

PY - 2016

Y1 - 2016

N2 - Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.

AB - Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.

KW - Galaxy: disc

KW - Galaxy: kinematics and dynamics

KW - Solar neighbourhood

UR - http://www.scopus.com/inward/record.url?scp=84960830871&partnerID=8YFLogxK

U2 - 10.1093/mnras/stv2721

DO - 10.1093/mnras/stv2721

M3 - مقالة

SN - 0035-8711

VL - 456

SP - 1163

EP - 1171

JO - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IS - 2

ER -

Constraining MOND using the vertical motion of stars in the solar neighbourhood

Abstract

Keywords

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this