Results 41 to 50 of about 190,834 (283)

Young massive star clusters in M51 [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
A search for young massive star clusters (YMCs) in the nearby face-on spiral galaxy M51 (NGC 5194) has been carried out using UBV CCD images from the prime focus camera on the Lick 3 meter Shane telescope. The YMC population is found to be quite rich with a specific U-band luminosity T_L(U) = 1.4, consistent with the high current star formation rate of
openaire   +3 more sources

The Impact of Stellar Radiative Feedback on Formation of Young Massive Clusters via Fast H i Gas Collisions

The Astrophysical Journal
Young massive clusters (YMCs) are dense aggregates of young stars and are often speculated as potential precursors to globular clusters. However, the formation mechanism of massive and compact gas clumps that precede YMCs remains unknown.
Ryunosuke Maeda, Tsuyoshi Inoue, Kazuyuki Omukai, Yasuo Fukui, Kisetsu Tsuge   +4 more
doaj   +1 more source

JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc

The Astrophysical Journal, 2023
Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc.
Eros Vanzella, Adélaïde Claeyssens, Brian Welch, Angela Adamo, Dan Coe, Jose M. Diego, Guillaume Mahler, Gourav Khullar, Vasily Kokorev, Masamune Oguri, Swara Ravindranath, Lukas J. Furtak, Tiger Yu-Yang Hsiao, Abdurro’uf, Nir Mandelker, Gabriel Brammer, Larry D. Bradley, Maruša Bradač, Christopher J. Conselice, Pratika Dayal, Mario Nonino, Felipe Andrade-Santos, Rogier A. Windhorst, Nor Pirzkal, Keren Sharon, S. E. de Mink, Seiji Fujimoto, Adi Zitrin, Jan J. Eldridge, Colin Norman   +29 more
doaj   +1 more source

Star Clusters in M31: I. A Catalog and a Study of the Young Clusters [PDF]

, 2008
We present an updated catalog of 1300 objects in the field of M31, including 670 likely star clusters of various types. Archival images were inspected to confirm cluster classifications where possible, but most of the classifications were based on ...
Auriere, Barmby, Barmby, Barmby, Battistini, Battistini, Battistini, Beasley, Beaton, Binney, Burstein, Chandar, Cohen, Dame, Dubath, Fusi Pecci, Gieles, Gordon, Heather Morrison, Hodge, James A. Rose, Jarrett, Jeff Kriessler, Kim, Koekemoer, Larsen, Lee, Leitherer, Leonardi, Loinard, Massey, Massey, Mateo, McLaughlin, Mochejska, Morrison, Nelson Caldwell, Paul Harding, Perrett, Ricardo Schiavon, Schiavon, Vetešnik, Whitmore, Williams, Williams, Worthey   +45 more
core   +3 more sources

SPG4 and Dementia: Expanding the Clinical Spectrum

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza, Arun Meyyazhagan, Eliseo Picchi, Gustavo Ribas, Ingrid Faber, Ryosuke Miyamoto, Preethi Basavaraju, Paolo Eusebi, Haripriya Kuchi Bhotla, Mario Stasi, Fabrizio Gaudiello, Francesco Patti, Filippo Maria Santorelli, Marcondes Cavalcante França Jr, José Luiz Pedroso, Orlando Graziani Povoas Barsottini, Hélio Afonso Ghizoni Teive, Peter Henry St George‐Hyslop, Toshitaka Kawarai, Antonio Orlacchio   +19 more
wiley   +1 more source

Massive stars in the Cl 1813-178 Cluster. An episode of massive star formation in the W33 complex

, 2011
Young massive (M >10^4 Msun) stellar clusters are a good laboratory to study the evolution of massive stars. Only a dozen of such clusters are known in the Galaxy. Here we report about a new young massive stellar cluster in the Milky Way.
Ben Davies, Beuther, Bibby, Bieging, Bonanos, Brogan, Brunthaler, Christine Trombley, Conti, Dame, Davies, Donald F. Figer, Elena Valenti, F. Najarro, Figer, Figer, Goss, Hanson, Helfand, Helfand, Hillier, Indebetouw, Koornneef, Levesque, Maria Messineo, Massey, Mauerhan, Mercer, Messineo, Messineo, Messineo, Meynet, Meynet, Moorwood, Najarro, Najarro, R. Michael Rich, R. P. Kudritzki, Reid, Ritchie, Schaerer, Schaller, Skinner, Skrutskie, Waldron, Wegner, White, Zacharias   +47 more
core   +1 more source

The Young Massive Stellar Cluster Associated with RCW 121

The Astronomical Journal, 2006
We report NIR broad and narrow band photometric observations in the direction of the IRAS17149-3916 source that reveal the presence of a young cluster of massive stars embedded in an HII region coincident with RCW121. These observations, together with published radio data, MSX and Spitzer images were used to determine some of the physical parameters of
Roman-Lopes, Alexandre, Abraham, Zulema
openaire   +2 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source

Star-forming Nuclear Clusters in Dwarf Galaxies Mimicking Active Galactic Nucleus Signatures in the Mid-infrared

The Astrophysical Journal
Effectively finding and identifying active galactic nuclei (AGNs) in dwarf galaxies is an important step in studying black hole formation and evolution.
Megan R. Sturm, Bayli Hayes, Amy E. Reines   +2 more
doaj   +1 more source

Massive stars in young VVV clusters [PDF]

Proceedings of the International Astronomical Union, 2016
The role of massive stars in the Galactic evolution is crucial. During their lifetime these stars change the kinematics around them through stellar winds, affect the formation of new stars, ionise and chemically enrich the media with the final supernova explosion. But the census of both massive stars and their host clusters is still poor.
S. Ramírez Alegría, J. Borissova, A.-N. Chené   +2 more
openaire   +1 more source