Absence of an X-shaped Structure in the Milky Way Bulge Using Mira Variable Stars

Bibcode
2017ApJ...836..218L
DOI
10.3847/1538-4357/836/2/218
López-Corredoira, M.
Bibliographical reference

The Astrophysical Journal, Volume 836, Issue 2, article id. 218, 5 pp. (2017).

Advertised on:
2
2017
Journal
The Astrophysical Journal
Number of authors
1
IAC number of authors
1
Citations
25
Refereed citations
21
Description
The stellar density distribution of the bulge is analyzed through one of its tracers. We use oxygen-rich Mira variables from the Catchpole et al. survey and OGLE-III survey as standard candles. The average age of these stars is around 9 Gyr. The population traced by Mira variables matches a boxy bulge prediction, not an X-shaped one, because only one peak is observed in the density along the analyzed lines of sight, whereas the prediction of an X-shape gives two clear peaks.
Related projects
Project Image
Morphology and dynamics of the Milky Way
This project consists of two parts, each differentiated but both complementary: morphology and dynamics. Detailed study of the morphology of the Milky Way pretends to provide a data base for the stellar distribution in the most remote and heavily obscured regions of our Galaxy, through the development of semiempirical models based on the
Martín
López Corredoira
In progress
Type
Refereed
The Milky Way and the Local Group (MWLG)

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