SIMBAD references

2002ApJ...574L..43C - Astrophys. J., 574, L43-L46 (2002/July-3)

An upper limit to the age of the galactic bar.


Abstract (from CDS):

Using data from the Two Micron All Sky Survey, we identify a population of infrared carbon stars with J-KS≥2 in the Milky Way. These stars are shown to trace the stellar bar previously identified in IR and optical surveys. The properties of C stars strongly suggest that they are of intermediate age. We conclude that the bar is likely to have formed more recently than 3 Gyr ago and must be younger than 6 Gyr. Implications and further tests of this conclusion are briefly discussed.

Abstract Copyright:

Journal keyword(s): Galaxy: Disk - Galaxy: Structure - Stars: Carbon

Simbad objects: 21

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