The effect of external tidal field on life-time of star clusters in collisional and collision-less codes

globular clusters; life-time; tidal field; Collisional system; Evolutionary mechanisms; Galactocentric distances; Globular clusters; Life-times; N-body simulation; Stellar evolutions; Physics and Astronomy (miscellaneous)

Abstract :

[en] The results of several performed N-body simulations using a collisionless N-body code named NMODY are reported here which aim at studying the evolution and life-time of star clusters under influence of an external tidal field. The code does not include stellar evolution, two body relaxation, and external tidal field as well. Having added the external tidal field to the code, we simulated our model clusters which are moving in circular orbits, in different galactocentric distances with various half-mass radius and initial mass around the Galaxy. Thereafter the results are compared with those of claimed by collisional code Nbody6. As the relaxation plays a main role in evolution of collisional systems, the main focus is to study how using an either collisional or collisionless code, changes the life-time of clusters. Finally the obtained relations between life-time of globular clusters with their initial half-mass radius are presented which numerically and virtually examine the strength of evolutionary mechanisms of globular clusters.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Naddaf Moghaddam, Mohammad Hassan ; Physics Department, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran

Haghi, Hosein; Physics Department, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran

Language :

English

Title :

The effect of external tidal field on life-time of star clusters in collisional and collision-less codes

Publication date :

20 November 2015

Event name :

2015 International Young Scientists Forum on Applied Physics (YSF)

Event place :

Dnipropetrovsk, Ukraine

Event date :

29-09-2015 => 02-10-2015

Audience :

International

Main work title :

YSF 2015 - International Young Scientists Forum on Applied Physics

Publisher :

Institute of Electrical and Electronics Engineers Inc.

ISBN/EAN :

978-1-4673-6977-0

Peer review/Selection committee :

Editorial reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx7/7328155/7333122/07333254.pdf?arnumber=7333254

Available on ORBi :

since 16 January 2025

Statistics

Number of views

23 (4 by ULiège)

Number of downloads

0 (0 by ULiège)

More statistics

Scopus citations^®

Scopus citations^®
without self-citations

OpenCitations

OpenAlex citations

Bibliography

G. Piotto, A Cool, I. King, "A Comparison of Deep HST Luminosity Functions of Four Globular Clusters", AJ, vol. 113, p. 1345, 1997.
G. De-Marchi, B. Leibundgut, F. Paresce, L. Pulone, "A deep optical luminosity function of NGC 6712 with the VLT: Evidence for severe tidal disruption", A&A, vol. 343, p. 9, 1999.
C..I. Grillmair, K.C. Freeman, M. Irwin, "Globular clusters with tidal tails: deep two-color star counts", A.I, vol. 109, p. 2553, 1995.
M. Odenkirchen et aZ., 'The Extended tails of Palomar 5: A Ten degree arc of globular cluster tidal debris", AJ, vol. 126, p. 2385, 2003.
M. Montuori, R. Capuzzo-Dolcetta, P. Di Matteo, A Lepinette, P. Miocchi, "Tidal Tails around Globular Clusters: Are They a Good Tracer of Cluster Orbits?", ApJ, vol. 659, p. 1212,2007.
AH.W.K Upper, A Macleod, D.C. Heggie, "On the structure of tidal tails", MNRAS, vol. 387, p. 1248,2008.
A.H.W. KUpper, P. Kroupa, H. Baumgardt, D.C. Heggie, "Tidal tails of star clusters", MNRAS, vol. 401, p. 105,2010.
O. Y. Gnedin, J.P. Ostriker, "Destruction of the galactic globular cluster system", ApJ, vol. 474, p. 223,1997.
E. Vesperini, D.C. Heggie, "On the effects of dynamical evolution on the initial mass function of globular clusters", MNRAS, vol. 289, p. 898, 1997.
H. Baumgardt,.I. Makino, "Dynamical evolution of star clusters in tidal fields", MNRAS, vol. 340, p. 227, 2003.
P.E.R. Alexander, M. Gieles, "A prescription and fast code for the longterm evolution of star clusters", MNRAS, vol. 422, p. 3415,2012.
J.R. Hurley, MM. Shara, "A direct N-body model of core-collapse and core oscillations", MNRAS, vol. 425, p. 2872, 2012.
P. Kroupa, S. Aarseth, J. Hurley, "The formation of a bound star cluster: from the orion nebula cluster to the pleiades", MNRAS, vol. 321, p. 699, 2001.
S. P. Goodwin, "Residual gas expulsion from young globular clusters", MNRAS, vol. 284, p. 785, 1997.
P. Kroupa, C.M. Boily, "The impact of mass loss on star cluster formation-II. Numerical N-body integration and further applications", MNRAS, vol. 338, p. 673,2003.
H. Baumgardt, P. Hut, D.C. Heggie, "Long-term evolution of isolated Nbody systems", MNRAS, vol. 336, p. 1069,2002.
L. Ciotti, P. Londrillo, C. Nipoti, "Axisymmetric and Triaxial MOND Density-Potential Pairs", ApJ, vol. 640, p. 741,2006.
D. P. Clemens, "Massachusetts-Stony Brook Galactic plane CO survey-The Galactic disk rotation curve", ApJ, vol. 295, p. 422, 1985.
Z. Khorrami, "Investigating the stellar system's life-time and the evolution of their mass function using N-body simulation", Master thesis, IASBS, Feb 2011.
G.F. Kennedy, "Application of three body stability to globular clusters 1: the tidal radius", MNRAS, vol. 444, p. 3328,2014.
Aarseth S..I., "Gravitational N-Body Simulations", Cambridge Univ. Press, Cambridge, 2003.
AH. Zonoozi, AH.W. Kuepper, H. Baumgardt, H. Haghi, P. Kroupa, M. Hilker, "Direct N-body simulations of globular clusters: (I) Palomar 14", MNRAS, vol. 411, p. 1989,2011.
AH. Zonoozi, H. Haghi, AH.W. Kuepper, H. Baumgardt, M..I. Frank, P. Kroupa, "Direct N-body simulations of globular clusters: (II) Palomar 4", MNRAS, vol. 440, p. 3172, 2014.
G.F. Kennedy, "Application of three-body stability to globular clusters II. Observed velocity dispersions", MNRAS, vol. 445, p. 4446,2014.