The Long Bar in the Milky Way: Corroboration of an Old Hypothesis | Zendy

M. LópezCorredoira | Zendy; A. CabreraLavers | Zendy; T. J. Mahoney | Zendy; P. L. Hammersley | Zendy; F. Garzón | Zendy; C. Gónzalez-Fernández | Zendy

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The Long Bar in the Milky Way: Corroboration of an Old Hypothesis

Author(s) -

M. LópezCorredoira,

A. CabreraLavers,

T. J. Mahoney,

P. L. Hammersley,

F. Garzón,

C. Gónzalez-Fernández

Publication year - 2006

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/509605

Subject(s) - milky way , bulge , spiral galaxy , astrophysics , physics , galactic plane , galaxy , extinction (optical mineralogy) , bar (unit) , sky , star count , astronomy , plane (geometry) , spiral (railway) , star formation , galactic center , stars , geometry , optics , mathematics , k type main sequence star , meteorology , t tauri star , mathematical analysis

Recent GLIMPSE data have further confirmed the hypothesis of the existence ofan in-plane long bar different from the bulge of the Milky Way with the samecharacteristics as emphasized some years ago by our team. In this paper, wepresent two new analyses that corroborate recent and earlier claims concerningthe existence in our Galaxy of a long flat bar with approximate dimensions 7.8kpc x 1.2 kpc x 0.2 kpc and a position angle of approximately 43 deg.: 1) starcounts with 2MASS All-Sky Release and MSX data, which give an excess in theplane region along 0

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