Keck spectroscopy and Spitzer space telescope analysis of the outer disk of the Triangulum spiral galaxy M 33
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Altmetric Citations
Block, D L; Combes, F; Puerari, I; Freeman, Kenneth; Stockton, A; Canalizo, G; Jarrett, Thomas H; Groess, R; Worthey, G; Gehrz, R. D.; Woodward, Chick E; Polomski, E. F.; Fazio, G. G.
Description
In an earlier study of the spiral galaxy M 33, we photometrically identified arcs or outer spiral arms of intermediate age (0.6-2 Gyr) carbon stars precisely at the commencement of the HI-warp. Stars in the arcs were unresolved, but were likely thermally-pulsing asymptotic giant branch carbon stars. Here we present Keck I spectroscopy of seven intrinsically bright and red target stars in the outer, northern arc in M 33. The target stars have estimated visual magnitudes as faint as V ∼ 25m....[Show more]
Collections | ANU Research Publications |
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Date published: | 2007 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/24750 |
Source: | Astronomy and Astrophysics |
DOI: | 10.1051/0004-6361:20065908 |
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File | Description | Size | Format | Image |
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01_Block_Keck_spectroscopy_and_Spitzer_2007.pdf | 656.54 kB | Adobe PDF | Request a copy |
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