Opendata, web and dolomites


NEw Science from the phase space of old stellar SYstems

Total Cost €


EC-Contrib. €






Project "NESSY" data sheet

The following table provides information about the project.


Organization address
postcode: EH8 9YL

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Project website
 Total cost 183˙454 €
 EC max contribution 183˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-RI
 Starting year 2015
 Duration (year-month-day) from 2015-10-15   to  2017-10-14


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE UNIVERSITY OF EDINBURGH UK (EDINBURGH) coordinator 183˙454.00


 Project objective

In the last few years our traditional interpretative paradigm of the internal dynamics of globular star clusters (GCs) has been revolutionized by a series of discoveries about their chemical, structural, and kinematic properties. The existence of multiple stellar populations is now regarded as a ubiquitous phenomenon, while for decades GCs have been viewed as the epitome of a “simple stellar population”. Empirical scaling relations between super massive black holes masses and the velocity dispersion of their host galaxy encourage to consider GCs as host systems of intermediate mass black holes (IMBHs). Finally, little attention has been traditionally paid to the role played by angular momentum in the dynamical evolution of these systems, yet an increasing number of young and old star clusters are now being observed to have evidence of rotation. The astrometric mission Gaia, by allowing the acquisition of the proper motion of thousands of stars in Galactic GCs with exquisite detail, will soon unlock the full phase space of these stellar systems. Such a tremendous observational progress, coupled with recent improvements on the side of numerical simulations, calls for a renewed effort on dynamical modelling. The proposed research program is therefore exceptionally timely and, by means of a unique combination of analytical models, numerical simulations, and the exploitation of state-of-the-art observational data, aims at forming a more realistic dynamical paradigm for this class of stellar systems by providing answers to the following key questions: (1) Are there specific signatures in phase space characterizing the dynamical evolution of multiple stellar populations in GCs? (2) What is the role of the angular momentum in the early and long-term dynamical evolution of star clusters? (3) Is there a dynamical connection between internal rotation and the presence of IMBHs in GCs?


year authors and title journal last update
List of publications.
2016 M. J. Cordero, V. Hénault-Brunet, C. A. Pilachowski, E. Balbinot, C. I. Johnson, A. L. Varri
Differences in the rotational properties of multiple stellar populations in M13: a faster rotation for the ‘extreme’ chemical subpopulation
published pages: 3515-3535, ISSN: 0035-8711, DOI: 10.1093/mnras/stw2812
Monthly Notices of the Royal Astronomical Society 465/3 2019-06-14
2016 Maria A. Tiongco, Enrico Vesperini, Anna Lisa Varri
Kinematical evolution of tidally limited star clusters: the role of retrograde stellar orbits
published pages: stw1341, ISSN: 0035-8711, DOI: 10.1093/mnras/stw1341
Monthly Notices of the Royal Astronomical Society 2019-06-14
2017 A. Bellini, P. Bianchini, A. L. Varri, J. Anderson, G. Piotto, R. P. van der Marel, E. Vesperini, L. L. Watkins
Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. V. The Rapid Rotation of 47 Tuc Traced and Modeled in Three Dimensions
published pages: 167, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aa7c5f
The Astrophysical Journal 844/2 2019-06-14
2017 Emanuele Dalessandro, Alice Zocchi, Anna Lisa Varri, Alessio Mucciarelli, Michele Bellazzini, Francesco R. Ferraro, Barbara Lanzoni, Emilio Lapenna, Livia Origlia
Three candidate double clusters in the LMC: truth or dare?
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/stx2892
Monthly Notices of the Royal Astronomical Society 2019-06-14
2017 Philip G. Breen, Anna Lisa Varri, Douglas C. Heggie
The kinematic richness of star clusters – I. Isolated spherical models with primordial anisotropy
published pages: 2778-2789, ISSN: 0035-8711, DOI: 10.1093/mnras/stx1750
Monthly Notices of the Royal Astronomical Society 471/3 2019-06-14
2017 Breen, Phil; Varri, Anna Lisa; Penarrubia, Jorge; Heggie, Douglas C.
Dynamical evolution of globular clusters in dark matter halos
published pages: , ISSN: , DOI:
American Astronomical Society, DDA meeting \"#48, id.303.04\" 2019-06-14
2017 Maria A. Tiongco, Enrico Vesperini, Anna Lisa Varri
Kinematical evolution of tidally limited star clusters: rotational properties
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/stx853
Monthly Notices of the Royal Astronomical Society 2019-06-14
2016 Tiongco, Maria; Vesperini, Enrico; Varri, Anna Lisa
Effects of dynamical evolution on the internal kinematical properties of star clusters
published pages: , ISSN: , DOI:
American Astronomical Society, DDA meeting \"#47, id.200.02\" 2019-06-14
2017 David R. Cole, Victor P. Debattista, Anna-Lisa Varri, Markus Adam, Anil C. Seth
Spatial and kinematic segregation in star-cluster merger remnants
published pages: 2895-2909, ISSN: 0035-8711, DOI: 10.1093/mnras/stw3325
Monthly Notices of the Royal Astronomical Society 466/3 2019-06-14
2017 Jorge Peñarrubia, Anna Lisa Varri, Philip G. Breen, Annette M. N. Ferguson, Rubén Sánchez-Janssen
Stellar envelopes of globular clusters embedded in dark mini-haloes
published pages: L31-L35, ISSN: 1745-3933, DOI: 10.1093/mnrasl/slx094
Monthly Notices of the Royal Astronomical Society: Letters 471/1 2019-06-14
2017 Owen M. Boberg, Enrico Vesperini, Eileen D. Friel, Maria A. Tiongco, Anna Lisa Varri
Internal Rotation in the Globular Cluster M53
published pages: 114, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aa7070
The Astrophysical Journal 841/2 2019-06-14
2017 Kathryne J. Daniel, Douglas C. Heggie, Anna Lisa Varri
An approximate analytic model of a star cluster with potential escapers
published pages: 1453-1473, ISSN: 0035-8711, DOI: 10.1093/mnras/stx571
Monthly Notices of the Royal Astronomical Society 468/2 2019-06-14
2017 Varri, Anna Lisa; Breen, Philip G.; Heggie, Douglas C.; Tiongco, Maria; Vesperini, Enrico
New science from the phase space of old stellar systems
published pages: , ISSN: , DOI:
American Astronomical Society, DDA meeting \"#48, id.201.01\" 2019-06-14
2016 Varri, A. L.
Rotating and anisotropic models of globular clusters
published pages: , ISSN: , DOI:

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