Hunting the parent of the orphan stream: Identifying stream members from low-resolution spectroscopy
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Casey, Andrew; Da Costa, Gary; Keller, Stefan; Maunder, Elizabeth
Description
We present candidate K-giant members in the Orphan Stream that have been identified from low-resolution data taken with the AAOmega spectrograph on the Anglo-Australian Telescope. From modest signal-to-noise spectra and independent cuts in photometry, kinematics, gravity, and metallicity we yield self-consistent, highly probable stream members. We find a revised stream distance of 22.5 ± 2.0 kpc near the celestial equator and our kinematic signature peaks at V GSR = 82.1 ± 1.4 km s-1. The...[Show more]
Collections | ANU Research Publications |
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Date published: | 2013 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/70885 |
Source: | Astrophysical Journal, The |
DOI: | 10.1088/0004-637X/764/1/39 |
Access Rights: | Open Access |
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01_Casey_Hunting_the_parent_of_the_2013.pdf | 689.76 kB | Adobe PDF |
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