Results 11 to 20 of about 106,016 (255)

THE BRIGHTEST YOUNG STAR CLUSTERS IN NGC 5253 [PDF]

The Astrophysical Journal, 2015
The nearby dwarf starburst galaxy NGC 5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the “radio nebula”).
D. Calzetti, K. Johnson, A. Adamo, J. Gallagher, J. Andrews, Linda J. Smith, G. Clayton, J. Lee, J. Lee, E. Sabbi, L. Úbeda, Hwihyun Kim, Hwihyun Kim, J. Ryon, D. Thilker, S. Bright, E. Zackrisson, R. Kennicutt, S. D. Mink, B. Whitmore, A. Aloisi, R. Chandar, M. Cignoni, D. Cook, D. Dale, B. Elmegreen, D. Elmegreen, A. Evans, A. Evans, M. Fumagalli, D. Gouliermis, D. Gouliermis, K. Grasha, E. Grebel, M. Krumholz, R. Walterbos, A. Wofford, T. Brown, C. Christian, C. Dobbs, A. Herrero, A. Herrero, L. Kahre, M. Messa, P. Nair, A. Nota, G. Östlin, A. Pellerin, E. Sacchi, D. Schaerer, M. Tosi   +50 more
semanticscholar   +11 more sources

Intermediate mass black hole formation in compact young massive star clusters [PDF]

, 2020
Young dense massive star clusters are a promising environment for the formation of intermediate mass black holes (IMBHs) through collisions. We present a set of 80 simulations carried out with Nbody6++GPU of 10 initial conditions for compact $\sim 7 ...
Francesco Paolo Rizzuto, Thorsten Naab, Rainer Spurzem, Mirek Giersz, Jeremiah P. Ostriker, Nicholas C. Stone, Long Wang, Peter Berczik, Markus Rampp   +8 more
openalex   +3 more sources

Formation of a low-mass galaxy from star clusters in a 600-million-year-old Universe. [PDF]

Nature
The most distant galaxies detected were seen when the Universe was a scant 5% of its current age. At these times, progenitors of galaxies such as the Milky Way were about 10,000 times less massive.
Mowla L, Iyer K, Asada Y, Desprez G, Tan VYY, Martis N, Sarrouh G, Strait V, Abraham R, Bradač M, Brammer G, Muzzin A, Pacifici C, Ravindranath S, Sawicki M, Willott C, Estrada-Carpenter V, Jahan N, Noirot G, Matharu J, Rihtaršič G, Zabl J.   +21 more
europepmc   +2 more sources

Intermediate-mass Black Holes on the Run from Young Star Clusters [PDF]

Astrophysical Journal, 2022
The existence of black holes (BHs) with masses in the range between stellar remnants and supermassive BHs has only recently become unambiguously established.
Elena Gonz'alez Prieto, K. Kremer, G. Fragione, Miguel A. S. Martinez, Newlin C. Weatherford, M. Zevin, F. Rasio   +6 more
semanticscholar   +1 more source

Intermediate-mass black holes from stellar mergers in young star clusters [PDF]

Monthly notices of the Royal Astronomical Society, 2021
Intermediate-mass black holes (IMBHs) in the mass range $10^2\!-\!10^5\, \mathrm{M_{\odot }}$ bridge the gap between stellar black holes (BHs) and supermassive BHs. Here, we investigate the possibility that IMBHs form in young star clusters via runaway
Ugo N Di Carlo, M. Mapelli, M. Pasquato, S. Rastello, A. Ballone, Marco Dall’Amico, N. Giacobbo, G. Iorio, M. Spera, S. Torniamenti, F. Haardt   +10 more
semanticscholar   +1 more source

Radii of young star clusters in nearby galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2021
We measure the projected half-light radii of young star clusters in 31 galaxies from the Legacy Extragalactic UV Survey (LEGUS). We implement a custom pipeline specifically designed to be robust against contamination, which allows us to measure radii ...
Gillen Brown, O. Gnedin
semanticscholar   +1 more source

Dynamics of binary black holes in low-mass young star clusters [PDF]

Monthly notices of the Royal Astronomical Society, 2021
Young star clusters are dynamically active stellar systems and are a common birthplace for massive stars. Low-mass star clusters (∼300–103 M⊙) are more numerous than massive systems and are characterized by a two-body relaxation time-scale of a few Myr:
S. Rastello, M. Mapelli, Ugo N Di Carlo, G. Iorio, A. Ballone, N. Giacobbo, F. Santoliquido, S. Torniamenti   +7 more
semanticscholar   +1 more source

Massive White Dwarfs in Young Star Clusters [PDF]

Astrophysical Journal, 2021
We have carried out a search for massive white dwarfs (WDs) in the direction of young open star clusters using the Gaia DR2 database. The aim of this survey was (1) to provide robust data for new and previously known high-mass WDs regarding cluster ...
H. Richer, I. Caiazzo, Helen Du, S. Grondin, James Hegarty, J. Heyl, R. Kerr, David R. Miller, S. Thiele   +8 more
semanticscholar   +1 more source

Compact Object Mergers in Hierarchical Triples from Low-Mass Young Star Clusters [PDF]

, 2021
A binary star orbited by an outer companion constitutes a hierarchical triple system. The outer body may excite the eccentricity of the inner binary through the von Zeipel-Lidov-Kozai (ZLK) mechanism, triggering the gravitational wave (GW) coalescence of
A. Trani, S. Rastello, U. N. D. Carlo, F. Santoliquido, A. Tanikawa, M. Mapelli   +5 more
semanticscholar   +1 more source

Populating the Upper Black Hole Mass Gap through Stellar Collisions in Young Star Clusters [PDF]

Astrophysical Journal, 2020
Theoretical modeling of massive stars predicts a gap in the black hole (BH) mass function above ∼40–50 M ⊙ for BHs formed through single star evolution, arising from (pulsational) pair-instability supernovae (PISNe).
K. Kremer, M. Spera, Devin R. Becker, S. Chatterjee, U. N. Di Carlo, G. Fragione, C. Rodriguez, Claire S. Ye, F. Rasio   +8 more
semanticscholar   +1 more source