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Mapping the Galactic Halo. IV. Finding Distant Giants Reliably with the Washington System

Morrison, Heather; Olszewski, Edward W; Mateo, Mario; Norris, John; Harding, Paul; Dohm-Palmer, Robbie C; Freeman, Kenneth

Description

We critically examine the use of the Washington photometric system (with the DDO51 filter) for identifying distant halo giants. While this is the most powerful photometric technique for isolating G and K giant stars, spectroscopic follow-up of giant candidates is vital. There are two situations in which interlopers outnumber genuine giants in the diagnostic M - 51/M -T2 plot and are indistinguishable photometrically from the giants. (1) In deep surveys covering tens of square degrees, very...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
URI: http://hdl.handle.net/1885/94779
Source: Astronomical Journal

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