Release 7.11 ("Paola")

http://snipurl.com/gclusters

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Parameters Positional Parameters cluster NGC 6809 name M 55 RA 19 39 59. Declination -30 57 44 Galactic longitude 8.8 Galactic latitude -23.27 R sun 5.3 R gc 3.9 X 4.8 Y 0.7 Z -2.1 Photometric Parameters E (B-V) 0.08 V HB 14.4 (m-M) 13.87 Vt 6.32 MVt -7.55 (U-B) 0.11 (B-V) 0.72 (V-R) 0.48 (V-I) 1 S_RR 12.4 HBR 0.87 hbt 1 Structural Parameters [Fe / H] -1.81 SpT F4 v_r 174.8 err 0.4 v_LSR 183.4 c 0.76 r_c 2.83 r_h 2.89 r_t 16.28 lg(tc) 9.47 lg(th) 9.3 mu_V 19.13 rho_v 2.14 Color-magnitude diagrams author Mandushev, Georgi I.; Fahlman, Gregory; Richer, Harvey B.; Thompson, Ian B. title A Photometric Study of the Globular Cluster M55 journal "Astronomical Journal", 1996, v.112, p.1536 CM diagram

DSS image Image of the cluster from the Digital Sky Survey Other Resources for NGC 6809 ADS "Object Search" SEDS data Web Links for this cluster (0 links in the database at the moment) Users comments for this cluster (0 comments in the database at the moment) Selected biblio Paper n. 1 Lanzoni, B.; Dalessandro, E.; Perina, S.; Ferraro, F. R.; Rood, R. T.; Sollima, A. The Surprising External Upturn of the Blue Straggler Radial Distribution in M55 2007, The Astrophysical Journal, Volume 670, Issue 2, pp. 1065-1073 (NGC 6809 ) Paper n. 2 Mandushev, Georgi I.; Fahlman, Gregory; Richer, Harvey B.; Thompson, Ian B. A Photometric Study of the Globular Cluster M55 "Astronomical Journal", 1996, v.112, p.1536 (NGC 6809 cmd ) See all items (2 papers)

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