Results 81 to 90 of about 58,157 (106)
La fine di un mondo. Rapporto ISPI 2019
, 2019 Anche nell’ultimo anno si sono moltiplicati i segnali di scomposizione del mondo politico, economico e istituzionale concepito alla fine della Seconda guerra mondiale e definitivamente liberato dalla fine della guerra fredda. Intanto, l’avvento di Donald
Paolo Magri, Alessandro Colombo
core
Kinematic signatures of cluster formation from cool collapse in the Lagoon Nebula cluster NGC 6530 [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 We examine the mass dependence of the velocity dispersion of stars in the young cluster NGC 6530 to better understand how it formed. Using a large sample of members we find that the proper motion velocity dispersion increases with stellar mass.
N J Wright +2 more
exaly +4 more sources
Mass Segregation in Very Young Open Clusters: A Case Study of NGC 2244 and NGC 6530
Astronomical Journal, 2007 We derive the proper motions, membership probabilities, and velocity dispersions of stars in the regions of the young (similar to 2 - 4 Myr old) open clusters NGC 2244 ( the central cluster in the Monoceros R2 association) and NGC 6530 ( the dominant ...
Richard De Grijs
exaly +2 more sources
Pulsating pre-main sequence stars in IC 4996 and NGC 6530
Astronomy and Astrophysics, 2006 Context. Asteroseismology of pulsating pre-main sequence (PMS) stars has the potential of testing the validity of current models of PMS structure and evolution.
K Zwintz, Werner W Weiss
exaly +2 more sources
The star formation region NGC 6530: Distance, ages and initial mass function
Astronomy and Astrophysics, 2005 We present astrometry and BVI photometry, down to $V\simeq22$, of the very young open cluster NGC 6530, obtained from observations taken with the Wide Field Imager camera at the MPG/ESO 2.2 m Telescope. Both the V vs. $B-V$ and the V vs.
F Damiani, G Micela, S Sciortino
exaly +2 more sources