2012MNRAS.422L..21S

Query : 2012MNRAS.422L..21S

2012MNRAS.422L..21S - Mon. Not. R. Astron. Soc., 422, L21-L23 (2012/May-1)

NGC 2419 does not challenge MOND, part 2.

SANDERS R.H.

Abstract (from CDS):

I argue that, despite repeated claims of Ibata et al., the globular cluster NGC 2419 does not pose a problem for modified Newtonian dynamics (MOND). I present a new polytropic model with a running polytropic index. This model provides an improved representation of the radial distribution of surface brightness while maintaining a reasonable fit to the velocity dispersion profile. Although it may be argued that the differences with these observations remain large compared to the reported random errors, there are several undetectable systematic effects which render a formal likelihood analysis irrelevant. I comment generally upon these effects and upon the intrinsic limitations of pressure-supported objects as tests of gravity.

Abstract Copyright: 2012 The Author Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): gravitation - globular clusters: individual: NGC 2419 - dark matter

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 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0

Query : 2012MNRAS.422L..21S

Basic data :
NGC 2419 -- Globular Cluster
Other object types: otypes_help 		GlC (2013A&A,GCl), Cl* (C,[KPS2012]), * ([HMT98])
ICRS coord. (ep=J2000) : 		07 38 08.51 +38 52 54.9 [ ] D 2006MNRAS.365.1357D
FK4 coord. (ep=B1950 eq=1950) : 		07 34 45.50 +38 59 44.3 [ ]
Gal coord. (ep=J2000) : 		180.36964 +25.24161 [ ]
Proper motions mas/yr : 		-0.02 -0.57 [0.02 0.01 90] C 2019MNRAS.482.5138B
Radial velocity / Redshift / cz : 		V(km/s) -20.6 [0.2] / z(spectroscopic) -0.000069 [0.000001] / cz -20.60 [0.20]
   (Opt) A 2018MNRAS.478.1520B
Parallaxes (mas): 		0.003 [0.017] C 2021MNRAS.505.5978V
Angular size (arcmin): 		4.1 4.1 90 (Opt) D 1989Sci...246.1066D
Fluxes (6) :
V 10.05 [~] D 2012AJ....144..126D
K 7.82 [~] D 2008MNRAS.389.1924F
g (AB) 11.198 [0.009] C 2014MNRAS.437.1725V
r (AB) 10.727 [0.009] C 2014MNRAS.437.1725V
i (AB) 10.473 [0.009] C 2014MNRAS.437.1725V
z (AB) 10.371 [0.010] C 2014MNRAS.437.1725V
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 293 		Display criteria :

Identifiers (5) :
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NGC 2419 GCl 12 [KPS2012] MWSC 1290
C 0734+390 [HMT98] AS 17-0

References (998 between 1850 and 2026) (Total 998)
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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Collections of Measurements Description of Measurements

Velocities : 2    Distance : 1    Fe/H : 7    Plx : 1    PM : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 2419

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NGC 2419

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