Results 11 to 20 of about 2,502,286 (203)

The Milky Way’s nuclear star cluster: Old, metal-rich, and cuspy [PDF]

Astronomy & Astrophysics, 2020
Context. The environment of Sagittarius A* (Sgr A*), the central black hole of the Milky Way, is the only place in the Universe where we can currently study the interaction between a nuclear star cluster and a massive black hole and infer the properties ...
R. Schödel, F. Nogueras-Lara, E. Gallego-Cano, B. Shahzamanian, A. T. Gallego-Calvente, A. Gardini   +5 more
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GW190412 as a Third-generation Black Hole Merger from a Super Star Cluster [PDF]

Astrophysical Journal, 2020
We explore the possibility that GW190412, a binary black hole merger with a non-equal-mass ratio and significantly spinning primary, was formed through repeated black hole mergers in a dense super star cluster.
C. Rodriguez, K. Kremer, M. Y. Grudi'c, Zachary Hafen, S. Chatterjee, G. Fragione, A. Lamberts, Miguel A. S. Martinez, F. Rasio, Newlin C. Weatherford, Claire S. Ye   +10 more
semanticscholar   +1 more source

Investigating the effect of massive stars on the dynamical evolution of open clusters, using optimal and random sampling [PDF]

Iranian Journal of Physics Research, 2023
Massive OB stars have an important effect on the dynamical evolution of open star clusters. In the simulation of star clusters, the sampling method to determine the mass function of the cluster affects the number and mass of massive stars. Two methods of
Malihe Rabiee, Akram Hasani Zonoozi, Hosein Haghi   +2 more
doaj   +1 more source

The Perseus ALMA Chemistry Survey (PEACHES). II. Sulfur-bearing Species and Dust Polarization Revealing Shocked Regions in Protostars in the Perseus Molecular Cloud

The Astrophysical Journal, 2023
In protostellar cores, sulfur species are effective probes for the energetic environments, such as shocked regions. With the majority of sulfur depleted on dust grains, sulfur-bearing molecules could be liberated back to gas phase by shocks associated ...
Ziwei E. Zhang, Yao-lun Yang, Yichen Zhang, Erin G. Cox, Shaoshan Zeng, Nadia M. Murillo, Satoshi Ohashi, Nami Sakai   +7 more
doaj   +1 more source

Modeling Dense Star Clusters in the Milky Way and beyond with the Cluster Monte Carlo Code [PDF]

Astrophysical Journal Supplement Series, 2021
We describe the public release of the Cluster Monte Carlo (CMC) code, a parallel, star-by-star N-body code for modeling dense star clusters. CMC treats collisional stellar dynamics using Hénon’s method, where the cumulative effect of many two-body ...
C. Rodriguez, Newlin C. Weatherford, S. Coughlin, P. A. Seoane, K. Breivik, S. Chatterjee, F. Kirouglu, K. Kremer, N. Z. Rui, Claire S. Ye, M. Zevin, F. Rasio   +11 more
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Domain-specific p53 mutants activate EGFR by distinct mechanisms exposing tissue-independent therapeutic vulnerabilities

Nature Communications, 2023
Here the authors identify distinct mechanisms by which domain-specific p53 mutations activate cancer cell growth via the epidermal growth factor receptor (EGFR). These mechanisms affect sensitivity to EGFR inhibitors, opening avenues for targeted therapy.
Teresa Lai Fong Ho, May Yin Lee, Hui Chin Goh, Germaine Yi Ning Ng, Jane Jia Hui Lee, Srinivasaraghavan Kannan, Yan Ting Lim, Tianyun Zhao, Edwin Kok Hao Lim, Cheryl Zi Jin Phua, Yi Fei Lee, Rebecca Yi Xuan Lim, Perry Jun Hao Ng, Ju Yuan, Dedrick Kok Hong Chan, Bettina Lieske, Choon Seng Chong, Kuok Chung Lee, Jeffrey Lum, Wai Kit Cheong, Khay Guan Yeoh, Ker Kan Tan, Radoslaw M. Sobota, Chandra S. Verma, David P. Lane, Wai Leong Tam, Ashok R. Venkitaraman   +26 more
doaj   +1 more source

A luminous X-ray outburst from an intermediate-mass black hole in an off-centre star cluster [PDF]

Nature Astronomy, 2018
A unique signature for the presence of massive black holes in very dense stellar regions is occasional giant-amplitude outbursts of multi-wavelength radiation from tidal disruption and subsequent accretion of stars that make a close approach to the black
D. Lin, J. Strader, E. Carrasco, D. Page, A. Romanowsky, J. Homan, J. Irwin, R. Remillard, O. Godet, N. Webb, H. Baumgardt, R. Wijnands, D. Barret, P. Duc, J. Brodie, S. Gwyn   +15 more
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Deep transfer learning for star cluster classification: I. application to the PHANGS–HST survey [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present the results of a proof-of-concept experiment that demonstrates that deep learning can successfully be used for production-scale classification of compact star clusters detected in Hubble Space Telescope(HST) ultraviolet-optical imaging of ...
Wei Wei, E. Huerta, B. Whitmore, Janice C. Lee, S. Hannon, R. Chandar, D. Dale, K. Larson, D. Thilker, L. Úbeda, M. Boquien, M. Chevance, J. Kruijssen, A. Schruba, G. Blanc, E. Congiu   +15 more
semanticscholar   +1 more source

Star cluster catalogues for the LEGUS dwarf galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present the star cluster catalogues for 17 dwarf and irregular galaxies in the HST Treasury Program ‘Legacy ExtraGalactic UV Survey’ (LEGUS). Cluster identification and photometry in this sub-sample are similar to that of the entire LEGUS sample, but ...
D. Cook, J. Lee, A. Adamo, H. Kim, R. Chandar, B. Whitmore, A. Mok, J. Ryon, D. Dale, D. Calzetti, J. Andrews, A. Aloisi, G. Ashworth, S. Bright, T. Brown, C. Christian, M. Cignoni, G. Clayton, R. D. Silva, S. D. Mink, C. Dobbs, B. Elmegreen, D. Elmegreen, A. Evans, M. Fumagalli, J. Gallagher, D. Gouliermis, K. Grasha, E. Grebel, A. Herrero, D. Hunter, E. I. Jensen, K. Johnson, L. Kahre, R. Kennicutt, M. Krumholz, N. Lee, D. Lennon, S. Linden, C. Martin, M. Messa, P. Nair, A. Nota, G. Ostlin, R. Parziale, A. Pellerin, M. Regan, E. Sabbi, E. Sacchi, D. Schaerer, D. Schiminovich, F. Shabani, F. Slane, J. Small, C. L. Smith, L. Smith, S. Taibi, D. Thilker, I. C. D. L. Torre, M. Tosi, J. Turner, L. Úbeda, S. V. Dyk, R. Walterbos, A. S. O. PhysicsAstronomy, C. I. O. Technology., Infrared Processing, A. Center, D. Astronomy, The Oskar Klein Centre, S. University, G. Observatory, D. Physics, Astronomy, U. Toledo, Space Telescope Science Institute, U. Wyoming, D. Astronomy, U. Massachusetts, S. Observatory, U. Arizona, Institute for Computational Cosmology, Centre for Extragalactic Astronomy, D. Physics, University of Pisa, Louisiana State University, Dept. of AstronomyAstrophysics, University of California at Santa Cruz, Astronomical InstituteAnton Pannekoek'', U. Amsterdam, S. O. Physics, U. Exeter, Ibm Research Division, T. J. W. R. Center, Vassar College, U. Virginia, National Radio Astronomy Observatory, U. Wisconsin--Madison, Zentrum fur Astronomie der Universitat Heidelberg, Institut fuer Astro- und Teilchenphysik Institute for Astronomy, A. Rechen-Institut, Instituto de Astrof'isica de Canarias, D. Astrof́isica, U. L. Laguna, L. Observatory, N. University, I. O. Astronomy, U. Cambridge, Research School for Astronomy, Astrophysics, Australian National University, E. Centre, Esa, Villanueva de la Cañada, U. Alabama, State University of New York at Geneseo, Observatoire de Geneve, U. Geneva, Columbia University, T. J. H. University, Bologna University, I. D. Astronomía, Universidad Autonoma de Mexico, Unidad Acad'emica en Ensenada   +123 more
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Young star cluster populations in the E-MOSAICS simulations [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present an analysis of young star clusters (YSCs) that form in the E-MOSAICS cosmological, hydrodynamical simulations of galaxies and their star cluster populations.
J. Pfeffer, N. Bastian, J. Kruijssen, M. Reina-Campos, R. Crain, C. Usher   +5 more
semanticscholar   +1 more source