Results 41 to 50 of about 2,681,556 (391)

First Evidence of Multi-iron Subpopulations in the Bulge Fossil Fragment Candidate Liller 1

The Astrophysical Journal, 2023
In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation epoch), here we present the first determination of the metallicity distribution of Liller 1.
Chiara Crociati, Elena Valenti, Francesco R. Ferraro, Cristina Pallanca, Barbara Lanzoni, Mario Cadelano, Cristiano Fanelli, Livia Origlia, Silvia Leanza, Emanuele Dalessandro, Alessio Mucciarelli, R. Michael Rich   +11 more
doaj   +1 more source

Ionizing the intergalactic medium by star clusters: the first empirical evidence [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present a VLT/X-Shooter spectroscopy of the Lyman continuum (LyC) emitting galaxy Ion2 at z = 3.2121 and compare it to that of the recently discovered strongly lensed LyC emitter at z = 2.37, known as the Sunburst arc. Three main results emerge from
E. Vanzella, G. Caminha, F. Calura, G. Cupani, M. Meneghetti, M. Castellano, P. Rosati, A. Mercurio, E. Sani, C. Grillo, R. Gilli, M. Mignoli, A. Comastri, M. Nonino, S. Cristiani, M. Giavalisco, K. Caputi   +16 more
semanticscholar   +1 more source

Star cluster dynamics [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010
Dynamical evolution plays a key role in shaping the current properties of star clusters and star cluster systems. A detailed understanding of the effects of evolutionary processes is essential to be able to disentangle the properties that result from dynamical evolution from those imprinted at the time of cluster formation.
openaire   +3 more sources

Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We present an investigation of the relationship between giant molecular cloud (GMC) properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793. We combine the star cluster catalogue from the HST LEGUS (Legacy ExtraGalactic UV
K. Grasha, K. Grasha, D. Calzetti, L. Bittle, K. Johnson, J. D. Meyer, R. Kennicutt, B. Elmegreen, A. Adamo, M. Krumholz, M. Fumagalli, E. Grebel, D. Gouliermis, D. Gouliermis, D. Cook, J. Gallagher, A. Aloisi, D. Dale, S. Linden, E. Sacchi, D. Thilker, R. Walterbos, M. Messa, A. Wofford, Linda J. Smith   +24 more
semanticscholar   +1 more source

Massive star and star cluster formation [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractI review the status of massive star formation theories: accretion from collapsing, massive, turbulent cores; competitive accretion; and stellar collisions. I conclude the observational and theoretical evidence favors the first of these models.
openaire   +2 more sources

A Multi-band Catalog of 10978 Star Clusters, Associations, and Candidates in the Milky Way [PDF]

Astronomical Journal, 2018
We present a catalog of Galactic star clusters, associations and candidates with 10978 entries. This multi-band catalog was constructed over 20 years, starting with visual inspections on the Digital Sky Survey and incremented with the 2MASS, WISE, VVV ...
E. Bica, D. Pavani, C. Bonatto, E. F. Lima   +3 more
semanticscholar   +1 more source

Star Formation in the Field and Clusters of NGC 5253 [PDF]

, 2001
We investigate the star formation history of both the bright star clusters and the diffuse `field star' population in the dwarf starburst galaxy NGC 5253 using STIS longslit ultraviolet spectroscopy.
Buat V., Campbell A., Campbell A. W., Christy A. Tremonti, Claus Leitherer, Daniela Calzetti, Garcia-Vargas M. L., Puls J., Timothy M. Heckman, Walsh J. R.   +9 more
core   +2 more sources

The spatial relation between young star clusters and molecular clouds in M51 with LEGUS [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We present a study correlating the spatial locations of young star clusters with those of molecular clouds in NGC 5194, in order to investigate the time-scale over which clusters separate from their birth clouds.
K. Grasha, K. Grasha, D. Calzetti, A. Adamo, R. Kennicutt, B. Elmegreen, M. Messa, D. Dale, K. Fedorenko, S. Mahadevan, S. Mahadevan, E. Grebel, M. Fumagalli, Hwihyun Kim, C. Dobbs, D. Gouliermis, D. Gouliermis, G. Ashworth, J. Gallagher, Linda J. Smith, M. Tosi, B. Whitmore, E. Schinnerer, D. Colombo, A. Hughes, A. Leroy, S. Meidt   +26 more
semanticscholar   +1 more source

Filamentary Star Formation in NGC 1275 [PDF]

, 2014
We examine the star formation in the outer halo of NGC~1275, the central galaxy in the Perseus cluster (Abell 426), using far ultraviolet and optical images obtained with the Hubble Space Telescope.
Canning, R. E. A, Conselice, C. J., Fabian, A. C., Gallagher III, J. S., Hicks, A., Johnstone, R. M., Kotulla, R., O'Connell, R. W., Rosario, D., Ryon, J. E., Wyse, R. F. G.   +10 more
core   +2 more sources

Collisions in primordial star clusters [PDF]

Astronomy & Astrophysics, 2018
Collisions were suggested to potentially play a role in the formation of massive stars in present day clusters, and have likely been relevant during the formation of massive stars and intermediate mass black holes within the first star clusters.
B. Reinoso, D. Schleicher, M. Fellhauer, R. Klessen, T. Boekholt   +4 more
semanticscholar   +1 more source