A Deep View of the Monoceros Ring in the Anticenter Direction: Clues of Its Extra-galactic Origin

A. Sollima; D. Valls-Gabaud; D. Martinez-Delgado; J. Fliri; J. Peñarrubia; H. Hoekstra

doi:10.1088/2041-8205/730/1/L6

A Deep View of the Monoceros Ring in the Anticenter Direction: Clues of Its Extra-galactic Origin

A. Sollima, D. Valls-Gabaud, D. Martinez-Delgado, J. Fliri, J. Peñarrubia, H. Hoekstra

School of Physics and Astronomy

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

Abstract

We present the results of deep imaging obtained at the Canada-France-Hawaii Telescope with MegaCam in the anticenter direction at two different heights above the Galactic disk. We detect the presence of the Monoceros ring in both fields as a conspicuous and narrow main-sequence feature which dominates star counts over a large portion of the color-magnitude diagram down to g' ~ 24. The comparison of the morphology and density of this feature with a large variety of Galactic models excludes the possibility that it can be due to a flare of the Galactic disk, supporting an extra-Galactic origin for this ring-like structure.

Original language	English
Journal	Astrophysical Journal Letters
Volume	730
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/730/1/L6
Publication status	Published - 1 Mar 2011

Keywords / Materials (for Non-textual outputs)

galaxies: interactions
Galaxy: disk
Galaxy: structure
methods: data analysis
techniques: photometric

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10.1088/2041-8205/730/1/L6

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http://adsabs.harvard.edu/abs/2011ApJ...730L...6S

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title = "A Deep View of the Monoceros Ring in the Anticenter Direction: Clues of Its Extra-galactic Origin",

abstract = "We present the results of deep imaging obtained at the Canada-France-Hawaii Telescope with MegaCam in the anticenter direction at two different heights above the Galactic disk. We detect the presence of the Monoceros ring in both fields as a conspicuous and narrow main-sequence feature which dominates star counts over a large portion of the color-magnitude diagram down to g' ~ 24. The comparison of the morphology and density of this feature with a large variety of Galactic models excludes the possibility that it can be due to a flare of the Galactic disk, supporting an extra-Galactic origin for this ring-like structure.",

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T1 - A Deep View of the Monoceros Ring in the Anticenter Direction: Clues of Its Extra-galactic Origin

AU - Sollima, A.

AU - Valls-Gabaud, D.

AU - Martinez-Delgado, D.

AU - Fliri, J.

AU - Peñarrubia, J.

AU - Hoekstra, H.

PY - 2011/3/1

Y1 - 2011/3/1

N2 - We present the results of deep imaging obtained at the Canada-France-Hawaii Telescope with MegaCam in the anticenter direction at two different heights above the Galactic disk. We detect the presence of the Monoceros ring in both fields as a conspicuous and narrow main-sequence feature which dominates star counts over a large portion of the color-magnitude diagram down to g' ~ 24. The comparison of the morphology and density of this feature with a large variety of Galactic models excludes the possibility that it can be due to a flare of the Galactic disk, supporting an extra-Galactic origin for this ring-like structure.

AB - We present the results of deep imaging obtained at the Canada-France-Hawaii Telescope with MegaCam in the anticenter direction at two different heights above the Galactic disk. We detect the presence of the Monoceros ring in both fields as a conspicuous and narrow main-sequence feature which dominates star counts over a large portion of the color-magnitude diagram down to g' ~ 24. The comparison of the morphology and density of this feature with a large variety of Galactic models excludes the possibility that it can be due to a flare of the Galactic disk, supporting an extra-Galactic origin for this ring-like structure.

KW - galaxies: interactions

KW - Galaxy: disk

KW - Galaxy: structure

KW - methods: data analysis

KW - techniques: photometric

U2 - 10.1088/2041-8205/730/1/L6

DO - 10.1088/2041-8205/730/1/L6

M3 - Article

SN - 2041-8205

VL - 730

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

ER -

A Deep View of the Monoceros Ring in the Anticenter Direction: Clues of Its Extra-galactic Origin

Abstract

Keywords / Materials (for Non-textual outputs)

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