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

Bibcode
2011ApJ...730L...6S
DOI
10.1088/2041-8205/730/1/L6
Sollima, A.; Valls-Gabaud, D.; Martínez-Delgado, D.; Fliri, J.; Peñarrubia, J.; Hoekstra, H.
Bibliographical reference

The Astrophysical Journal Letters, Volume 730, Issue 1, article id. L6 (2011).

Advertised on:
3
2011
Number of authors
6
IAC number of authors
2
Citations
30
Refereed citations
28
Description
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.
Type
Refereed
Galaxies
Methods
Techniques

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