Searching in the dark: the dark mass content of the Milky Way globular clusters NGC288 and NGC6218

Autor:	Alessio Mucciarelli, E. Lapenna, Emanuele Dalessandro, Livia Origlia, Antonio Sollima, Francesco R. Ferraro, C. Pallanca, Barbara Lanzoni, Filippo Contenta, Enrico Vesperini, L. Lovisi
Přispěvatelé:	Sollima, A., Ferraro, F.R., Lovisi, L., Contenta, F., Vesperini, E., Origlia, L., Lapenna, E., Lanzoni, B., Mucciarelli, A., Dalessandro, E., Pallanca, C., ITA, USA, GBR
Rok vydání:	2016
Předmět:	Astrophysics::High Energy Astrophysical Phenomena Milky Way FOS: Physical sciences Tidal heating Stars: luminosity function Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences 0103 physical sciences Cluster (physics) Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics Physics Techniques: radial velocitie 010308 nuclear & particles physics NGC288 Astronomy Astronomy and Astrophysics Stars: kinematics and dynamic Astronomy and Astrophysic Astrophysics - Astrophysics of Galaxies Globular clusters: individual: NGC6218 Stars Astrophysics - Solar and Stellar Astrophysics Stars: Population II Space and Planetary Science Mass content Astrophysics of Galaxies (astro-ph.GA) Mass function Globular cluster Dark galaxy Methods: data analysi
Zdroj:	Monthly Notices of the Royal Astronomical Society. 462:1937-1951
ISSN:	1365-2966 0035-8711
DOI:	10.1093/mnras/stw1779
Popis:	We present an observational estimate of the fraction and distribution of dark mass in the innermost region of the two Galactic globular clusters NGC 6218 (M12) and NGC 288. Such an assessment has been made by comparing the dynamical and luminous mass profiles derived from an accurate analysis of the most extensive spectroscopic and photometric surveys performed on these stellar systems. We find that non-luminous matter constitutes more than 60% of the total mass in the region probed by our data (R 17 pages, 10 figures, accepted for publication by MNRAS
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df938ec0a32b16d19107efea6a96e2a9 https://doi.org/10.1093/mnras/stw1779 Zobrazit plný text záznamu