Results 1 to 10 of about 350,936 (202)

Structural Parameters of Seven SMC Intermediate-Age and Old Star Clusters [PDF]

, 2009
We present structural parameters for the seven intermediate-age and old star clusters NGC121, Lindsay 1, Kron 3, NGC339, NGC416, Lindsay 38, and NGC419 in the Small Magellanic Cloud.
Alves, Andrea Kayser, Andreas Koch, Antonella Nota, Binney, Crowl, Da Costa, Da Costa, Daniel Harbeck, Dotter, Elena Sabbi, Eva K. Grebel, Gary Da Costa, Geyer, Gieles, Gisella Clementini, Glatt, Glatt, Gnedin, Goodwin, Grebel, Harris, Hatzidimitriou, Hill, Holtzman, Hunter, John S. Gallagher, Johnson, Katharina Glatt, Koch, Koekemoer, Kontizas, Kontizas, Kontizas, Lah, Mackey, Marco Sirianni, McLaughlin, Mighell, Monica Tosi, Parmentier, Sabbi, van den Bergh, Zaritsky   +43 more
core   +2 more sources

Dust-buried Compact Sources in the Dwarf Galaxy NGC 4449

The Astrophysical Journal, 2023
Multiwavelength images from the Hubble Space Telescope covering the wavelength range 0.27–1.6 μ m show that the central area of the nearby dwarf galaxy NGC 4449 contains several tens of compact sources that are emitting in the hydrogen recombination line
Daniela Calzetti, Sean T. Linden, Timothy McQuaid, Matteo Messa, Zhiyuan Ji, Mark R. Krumholz, Angela Adamo, Bruce Elmegreen, Kathryn Grasha, Kelsey E. Johnson, Elena Sabbi, Linda J. Smith, Varun Bajaj   +12 more
doaj   +1 more source

Unveiling Hidden Stellar Aggregates in the Milky Way: 1656 New Star Clusters Found in Gaia EDR3

The Astrophysical Journal Supplement Series, 2022
We report 1656 new star clusters found in the Galactic disk (∣ b ∣ < 20°) beyond 1.2 kpc, using Gaia EDR3 data. Based on an unsupervised machine-learning algorithm, DBSCAN, and following our previous studies, we utilized a unique method to do the data ...
Zhihong He, Xiaochen Liu, Yangping Luo, Kun Wang, Qingquan Jiang   +4 more
doaj   +1 more source

Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3

The Astrophysical Journal Supplement Series, 2023
Studying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude ...
Huanbin Chi, Feng Wang, Wenting Wang, Hui Deng, Zhongmu Li   +4 more
doaj   +1 more source

Hunting for Neighboring Open Clusters with Gaia DR3: 101 New Open Clusters within 500 pc

The Astrophysical Journal Supplement Series, 2023
We systematically searched for open clusters in the solar neighborhood within 500 pc using the pyUPMASK and HDBSCAN clustering algorithms based on Gaia DR3.
Songmei Qin, Jing Zhong, Tong Tang, Li Chen   +3 more
doaj   +1 more source

oMEGACat. I. MUSE Spectroscopy of 300,000 Stars within the Half-light Radius of ω Centauri

The Astrophysical Journal, 2023
Omega Centauri ( ω Cen) is the most massive globular cluster of the Milky Way and has been the focus of many studies that reveal the complexity of its stellar populations and kinematics.
M. S. Nitschai, N. Neumayer, C. Clontz, M. Häberle, A. C. Seth, T.-O. Husser, S. Kamann, M. Alfaro-Cuello, N. Kacharov, A. Bellini, A. Dotter, S. Dreizler, A. Feldmeier-Krause, M. Latour, M. Libralato, A. P. Milone, R. Pechetti, G. van de Ven, K. Voggel, Daniel R. Weisz   +19 more
doaj   +1 more source

The Role of Binarity and Stellar Rotation in the Split Main Sequence of NGC 2422

The Astrophysical Journal, 2022
In addition to the extended main-sequence turnoffs widely found in young and intermediate-age (∼600 Myr to 2 Gyr old) star clusters, some younger clusters even exhibit split main sequences (MSs).
Chenyu He, Weijia Sun, Chengyuan Li, Lu Li, Zhengyi Shao, Jing Zhong, Li Chen, Richard de Grijs, Baitian Tang, Songmei Qin, Zara Randriamanakoto   +10 more
doaj   +1 more source

Molecular Gas Properties in Young Stellar Clusters with a Suppressed Star Cluster Wind

The Astrophysical Journal Letters, 2023
In compact and dense star-forming clouds a global star cluster wind could be suppressed. In this case stellar feedback is unable to expel the leftover gas from the cluster. Young massive stars remain embedded in a dense residual gas and stir it by moving
Sergiy Silich, Jean Turner, Jonathan Mackey, Sergio Martínez-González   +3 more
doaj   +1 more source

Star cluster formation and star formation: the role of environment and star-formation efficiencies [PDF]

, 2008
“The original publication is available at www.springerlink.com”. Copyright Springer. DOI: 10.1007/s10509-009-0088-5By analyzing global starburst properties in various kinds of starburst and post-starburst galaxies and relating them to the properties of ...
A. Pasquali, A. Schulz, B.C. Whitmore, B.C. Whitmore, B.C. Whitmore, B.G. Elmegreen, B.W. Miller, C. Maraston, C.D. Wilson, C.D. Wilson, C.J. Jog, C.J. Jog, D. Calzetti, E. Hummel, F. Schweizer, F. Schweizer, F. Schweizer, F. Schweizer, G. Parmentier, G. Parmentier, G. Trancho, G. Worthey, G.R. Meurer, H. Krueger, J. Gorgas, J. Schulz, J.H. Brown, K.A. Knierman, M. Haas, M.D. Mora, O.M. Kurth, P. Anders, P. Anders, P. Anders, P. Anders, P. Goudfrooij, P. Goudfrooij, P. Goudfrooij, P. Goudfrooij, P.M. Solomon, R. Grijs de, R. Grijs de, S. Bergh van der, S.C. Gallagher, S.E. Zepf, S.G. Boutloukos, S.S. Larsen, S.S. Larsen, T. Lilly, T. Lilly, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, Uta Fritze, Y. Gao, Y. Gao, Y. Li, Y. Shioya   +58 more
core   +2 more sources

Surviving infant mortality in the hierarchical merging scenario [PDF]

, 2011
We examine the effects of gas expulsion on initially sub-structured and out-of-equilibrium star clusters. We perform $N$-body simulations of the evolution of star clusters in a static background potential before removing that potential to model gas ...
Aarseth, Allen, Allison, Allison, Allison, Bastian, Bate, Baumgardt, Bergin, Bertout, Boily, Boily, Bonnell, Bressert, Chen, Clarke, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Geyer, Goodman, Goodwin, Goodwin, Goodwin, Goodwin, Goodwin, Gutermuth, Hills, Kraus, Kroupa, Lada, Lada, M. Fellhauer, Mathieu, McKee, Moeckel, P. Assmann, Parmentier, Pinto, Proszkow, R. Smith, S. Goodwin, Tutukov, Verschueren   +44 more
core   +2 more sources