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A New Look at Open Cluster Ngc 6520

Odell, Andrew P. (2014) A New Look at Open Cluster Ngc 6520. Astronomical Journal, 147 (1). ISSN 1538-3881


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Publisher’s or external URL: http://dx.doi.org/10.1088/0004-6256/147/1/7


We use CCD and photoelectric photometry with Stromgren filters along with medium resolution spectra to investigate NGC 6520, an open cluster very nearly in the direction of the galactic center. We find an age of 60 Myr, a distance of 2 kpc, and an average reddening E( b - y) = 0.295, which increases toward the south. The average heliocentric radial velocity of the B stars is - 29 km s(-1), while the velocity of the nearby Barnard 86 is about 0 ( heliocentric; - 11 km s(- 1) compared to the LSR). This velocity difference amounts to about 1.8 kpc since the cluster formed, implying that it is extremely doubtful NGC 6520 is related to Barnard 86.

Item Type: Article
Publisher’s Statement: © 2014 The American Astronomical Society. IOP Publishing.
ID number or DOI: 10.1088/0004-6256/147/1/7
Keywords: ages; DISTANCES; open clusters and associations: general; open clusters and associations: individual (NGC 6520); Stars
Subjects: Q Science > QB Astronomy
NAU Depositing Author Academic Status: Faculty/Staff
Department/Unit: College of Engineering, Forestry, and Natural Science > Physics and Astronomy
Date Deposited: 30 Sep 2015 16:45
URI: http://openknowledge.nau.edu/id/eprint/376

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