The Sagittarius dwarf mass-to-light ratio

S. Zaggia; P. Bonifacio; M. Bellazzini; E. Caffau; F. Ferraro; G. Marconi; L. Monaco; S. Monai; L. Sbordone

doi:10.1017/S174392130500356X

The Sagittarius dwarf mass-to-light ratio

S. Zaggia, P. Bonifacio, M. Bellazzini, E. Caffau, F. Ferraro, G. Marconi, L. Monaco, S. Monai, L. Sbordone

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Abstract

We report on the use of high-resolution spectra to obtain a detailed description of the Sagittarius dwarf spheroidal internal dynamics, its Mass and Mass to Light ratio (M/L). Our direct measure of the central velocity dispersion of SGR give σSGR = 8.1 ± 0.4 km/s which translates in a total mass estimate of M_SGR = 1.6 × 10⁸ M_⊙ and corresponding (M/L)_SGR = 9.1(M/L)_⊙. We also report on a possible detection of rotation in the core of SGR.

Original language	English
Pages (from-to)	101-104
Number of pages	4
Journal	Proceedings of the International Astronomical Union
Volume	1
Issue number	C198
DOIs	https://doi.org/10.1017/S174392130500356X
Publication status	Published - 2005

Keywords

Dwarf galaxies
Kinematics
Mass

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S174392130500356X

Cite this

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title = "The Sagittarius dwarf mass-to-light ratio",

abstract = "We report on the use of high-resolution spectra to obtain a detailed description of the Sagittarius dwarf spheroidal internal dynamics, its Mass and Mass to Light ratio (M/L). Our direct measure of the central velocity dispersion of SGR give σSGR = 8.1 ± 0.4 km/s which translates in a total mass estimate of MSGR = 1.6 × 108 M⊙ and corresponding (M/L)SGR = 9.1(M/L)⊙. We also report on a possible detection of rotation in the core of SGR.",

keywords = "Dwarf galaxies, Kinematics, Mass",

author = "S. Zaggia and P. Bonifacio and M. Bellazzini and E. Caffau and F. Ferraro and G. Marconi and L. Monaco and S. Monai and L. Sbordone",

year = "2005",

doi = "10.1017/S174392130500356X",

language = "English",

volume = "1",

pages = "101--104",

journal = "Proceedings of the International Astronomical Union",

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TY - JOUR

T1 - The Sagittarius dwarf mass-to-light ratio

AU - Zaggia, S.

AU - Bonifacio, P.

AU - Bellazzini, M.

AU - Caffau, E.

AU - Ferraro, F.

AU - Marconi, G.

AU - Monaco, L.

AU - Monai, S.

AU - Sbordone, L.

PY - 2005

Y1 - 2005

N2 - We report on the use of high-resolution spectra to obtain a detailed description of the Sagittarius dwarf spheroidal internal dynamics, its Mass and Mass to Light ratio (M/L). Our direct measure of the central velocity dispersion of SGR give σSGR = 8.1 ± 0.4 km/s which translates in a total mass estimate of MSGR = 1.6 × 108 M⊙ and corresponding (M/L)SGR = 9.1(M/L)⊙. We also report on a possible detection of rotation in the core of SGR.

AB - We report on the use of high-resolution spectra to obtain a detailed description of the Sagittarius dwarf spheroidal internal dynamics, its Mass and Mass to Light ratio (M/L). Our direct measure of the central velocity dispersion of SGR give σSGR = 8.1 ± 0.4 km/s which translates in a total mass estimate of MSGR = 1.6 × 108 M⊙ and corresponding (M/L)SGR = 9.1(M/L)⊙. We also report on a possible detection of rotation in the core of SGR.

KW - Dwarf galaxies

KW - Kinematics

KW - Mass

UR - http://www.scopus.com/inward/record.url?scp=63549108128&partnerID=8YFLogxK

U2 - 10.1017/S174392130500356X

DO - 10.1017/S174392130500356X

M3 - Article

AN - SCOPUS:63549108128

VL - 1

SP - 101

EP - 104

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

SN - 1743-9213

IS - C198

ER -

The Sagittarius dwarf mass-to-light ratio

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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