Current data on the globular cluster Palomar 14 are consistent with MOND (Research Note)

G. Gentile, B. Famaey, G. Angus, P. Kroupa

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Context: Certain types of globular clusters have the very important property that the predictions for their kinematics in the Newtonian and modified Newtonian dynamics (MOND) contexts are divergent. Aims: Here, we advice regarding the recent claim that the stellar kinematics data (using 17 stars) of the globular cluster Palomar 14 are inconsistent with MOND. Methods: We compare the observations to the theoretical predictions using a Kolmogorov-Smirnov test, which is appropriate for small samples. Results: We find that with the currently available data the MOND prediction for the velocity distribution can only be excluded with a very low confidence level, clearly insufficient to claim that MOND is falsified.

Original languageEnglish
Article numberA97
JournalAstronomy and Astrophysics
Volume509
Issue number1
DOIs
Publication statusPublished - 2010

Fingerprint

globular clusters
kinematics
prediction
predictions
Kolmogorov-Smirnov test
confidence
velocity distribution
stars

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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abstract = "Context: Certain types of globular clusters have the very important property that the predictions for their kinematics in the Newtonian and modified Newtonian dynamics (MOND) contexts are divergent. Aims: Here, we advice regarding the recent claim that the stellar kinematics data (using 17 stars) of the globular cluster Palomar 14 are inconsistent with MOND. Methods: We compare the observations to the theoretical predictions using a Kolmogorov-Smirnov test, which is appropriate for small samples. Results: We find that with the currently available data the MOND prediction for the velocity distribution can only be excluded with a very low confidence level, clearly insufficient to claim that MOND is falsified.",
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Current data on the globular cluster Palomar 14 are consistent with MOND (Research Note). / Gentile, G.; Famaey, B.; Angus, G.; Kroupa, P.

In: Astronomy and Astrophysics, Vol. 509, No. 1, A97, 2010.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Current data on the globular cluster Palomar 14 are consistent with MOND (Research Note)

AU - Gentile, G.

AU - Famaey, B.

AU - Angus, G.

AU - Kroupa, P.

PY - 2010

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AB - Context: Certain types of globular clusters have the very important property that the predictions for their kinematics in the Newtonian and modified Newtonian dynamics (MOND) contexts are divergent. Aims: Here, we advice regarding the recent claim that the stellar kinematics data (using 17 stars) of the globular cluster Palomar 14 are inconsistent with MOND. Methods: We compare the observations to the theoretical predictions using a Kolmogorov-Smirnov test, which is appropriate for small samples. Results: We find that with the currently available data the MOND prediction for the velocity distribution can only be excluded with a very low confidence level, clearly insufficient to claim that MOND is falsified.

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