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

Facultad Ciencias Exactas

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Resumen

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.

Idioma original	Inglés
Páginas (desde-hasta)	101-104
Número de páginas	4
Publicación	Proceedings of the International Astronomical Union
Volumen	1
N.º	C198
DOI	https://doi.org/10.1017/S174392130500356X
Estado	Publicada - 2005

Áreas temáticas de ASJC Scopus

Medicina (miscelánea)
Astronomía y astrofísica
Nutrición y dietética
Salud pública, medioambiental y laboral
Ciencias planetarias y espacial

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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",

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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

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U2 - 10.1017/S174392130500356X

DO - 10.1017/S174392130500356X

M3 - Article

AN - SCOPUS:63549108128

SN - 1743-9213

VL - 1

SP - 101

EP - 104

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - C198

ER -

The Sagittarius dwarf mass-to-light ratio

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