2020AJ....160..208S

Query : 2020AJ....160..208S

2020AJ....160..208S - Astron. J., 160, 208-208 (2020/November-0)

Re-examining the radial distributions of M13 multiple populations.

SMOLINSKI J.P., HOOGENDAM W.B., VAN KOOTEN A.J., BENAC P. and BRUCE Z.J.

Abstract (from CDS):

We seek to resolve the tension in the literature regarding the presence of radially segregated multiple populations in the Galactic globular cluster M13. Previous studies of this nearby cluster have presented discordant results about the degree of dynamical mixing in M13's inner region. Using ground-based (UBVI) photometry, we show that cumulative radial distributions of stars on the blue and red sides of the red giant branch are statistically identical. Interestingly, these results are obtained using data from large-aperture, ground-based telescopes as well as a more modestly sized instrument, and both are in agreement with previous work done using Hubble Space Telescope and Stromgren photometry. Results are derived using the C_U,B,I index, shown to be sensitive to compositional differences. We discuss our conclusions that the chemically distinct populations within M13 may be dynamically mixed in the context of published results from simulations.

Journal keyword(s): Globular star clusters - Red giant branch - Hertzsprung Russell diagram - Broad band photometry - Dynamical evolution

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	M 13	GlC	16 41 41.634	+36 27 40.75			5.8			~	2291	0

Query : 2020AJ....160..208S

Basic data :

M 13 -- Globular Cluster

GlC (2013A&A,GCl), Cl* (C,[KPS2012]), G (2MASX)

16 41 41.634 +36 27 40.75 (Infrared) [ ] C 2006AJ....131.1163S

16 39 54.397 +36 33 20.27 [ ]

059.009475 +40.911761 [ ]

-3.18 -2.56 [0.01 0.01 90] C 2019MNRAS.482.5138B

V(km/s) -244.4 [0.3] / z(spectroscopic) -0.000815 [0.000001] / cz -244.30 [0.30] (Opt) A 2018MNRAS.478.1520B

0.127 [0.010] C 2021MNRAS.505.5978V

33.00 33.00 0 (~) D 2019MNRAS.489.3093S

V 5.8 [~] E ~

J 4.452 [0.015] C 2006AJ....131.1163S

H 3.941 [0.015] C 2006AJ....131.1163S

K 3.854 [0.015] C 2006AJ....131.1163S

g (AB) 6.903 [0.005] C 2014MNRAS.437.1725V

r (AB) 6.667 [0.003] C 2014MNRAS.437.1725V

i (AB) 6.397 [0.004] C 2014MNRAS.437.1725V

z (AB) 6.076 [0.002] C 2014MNRAS.437.1725V

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`M 13`	`GCl 45`	`NAME Hercules Globular Cluster`	`[KPS2012] MWSC 2445`
`C 1639+365`	`2MASX J16414163+3627407`	`NGC 6205`

References (2291 between 1850 and 2026) (Total 2291)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : M 13

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2MASX J16414163+3627407 NGC 6205

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