Results 41 to 50 of about 4,003,229 (276)

HST FUV Spectroscopy of Super Star Cluster A in the Green Pea Analog Mrk 71: Revealing the Presence of Very Massive Stars

The Astrophysical Journal, 2023
Mrk 71 is a low-metallicity ( Z = 0.16 Z _☉ ) starburst region in the local dwarf galaxy NGC 2366, hosting two super star clusters (SSCs A and B), and it is recognized as a Green Pea (GP) analog with SSC A responsible for the GP properties.
Linda J. Smith, M. S. Oey, Svea Hernandez, Jenna Ryon, Claus Leitherer, Stephane Charlot, Gustavo Bruzual, Daniela Calzetti, You-Hua Chu, Matthew J. Hayes, Bethan L. James, Anne E. Jaskot, Göran Östlin   +12 more
doaj   +1 more source

Demographics of Neutron Stars in Young Massive and Open Clusters [PDF]

The Astrophysical Journal Letters, 2020
Abstract Star clusters appear to be the ideal environment for the assembly of neutron star–neutron star (NS–NS) and black hole–neutron star (BH–NS) binaries. These binaries are among the most interesting astrophysical objects, being potential sources of gravitational waves (GWs) and gamma-ray bursts.
Giacomo Fragione, Sambaran Banerjee
openaire   +2 more sources

Universal Upper End of the Stellar Initial Mass Function in the Young and Compact LEGUS Clusters

The Astrophysical Journal, 2023
We investigate the variation in the upper end of the stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within ∼5 Mpc. All the young stellar clusters (YSCs) in the sample have ages ≲ 4 Myr and masses above
Dooseok Escher Jung, Daniela Calzetti, Matteo Messa, Mark Heyer, Mattia Sirressi, Sean T. Linden, Angela Adamo, Rupali Chandar, Michele Cignoni, David O. Cook, Clare L. Dobbs, Bruce G. Elmegreen, Aaron S. Evans, Michele Fumagalli, John S. Gallagher III, Deidre A. Hunter, Kelsey E. Johnson, Robert C. Kennicutt Jr., Mark R. Krumholz, Daniel Schaerer, Elena Sabbi, Linda J. Smith, Monica Tosi, Aida Wofford   +23 more
doaj   +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

The spatial evolution of young massive clusters

Astronomy & Astrophysics, 2020
International audience ; Context. Better understanding of star formation in clusters with high-mass stars requires rigorous dynamical and spatial analyses of star-forming regions.Aims. We seek to demonstrate that “INDICATE” is a powerful spatial analysis tool which when combined with kinematic data from Gaia DR2 can be used to probe star formation ...
Buckner, Anne, Khorrami, Zeinab, González, Marta, Lumsden, Stuart, Moraux, Estelle, Oudmaijer, René, Clark, Paul, Joncour, Isabelle, Blanco, José Manuel, de La Calle, Ignacio, Hacar, Álvaro, Herrera-Fernandez, José, Motte, Frédérique, Salgado, Jesús, Valero-Martín, Luis   +14 more
openaire   +2 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

Gamma ray emission from embedded young massive star clusters unveiled by Fermi-LAT [PDF]

EPJ Web of Conferences
Massive star clusters (SCs) have been proposed as additional contributors to Galactic Cosmic rays (CRs), to overcome the limitations of supernova remnants (SNR) to reach the highest energy end of the Galactic CR spectrum.
Peron Giada, Morlino Giovanni, Amato Elena, Menchiari Stefano   +3 more
doaj   +1 more source

GOALS-JWST: Revealing the Buried Star Clusters in the Luminous Infrared Galaxy VV 114

The Astrophysical Journal Letters, 2023
We present the results of a James Webb Space Telescope NIRCam investigation into the young massive star cluster (YMC) population in the luminous infrared galaxy VV 114.
Sean T. Linden, Aaron S. Evans, Lee Armus, Jeffrey A. Rich, Kirsten L. Larson, Thomas Lai, George C. Privon, Vivian U, Hanae Inami, Thomas Bohn, Yiqing Song, Loreto Barcos-Muñoz, Vassilis Charmandaris, Anne M. Medling, Sabrina Stierwalt, Tanio Diaz-Santos, Torsten Böker, Paul van der Werf, Susanne Aalto, Philip Appleton, Michael J. I. Brown, Christopher C. Hayward, Justin H. Howell, Kazushi Iwasawa, Francisca Kemper, David T. Frayer, David Law, Matthew A. Malkan, Jason Marshall, Joseph M. Mazzarella, Eric J. Murphy, David Sanders, Jason Surace   +32 more
doaj   +1 more source

The Size Distribution of Massive Young Clusters [PDF]

Symposium - International Astronomical Union, 2002
We have searched the WFPC2/HST archive for data on nearby massive young clusters with low extinction and we have analyzed 27 such objects. A clear dichotomy between objects with a compact core and without it is observed. We attribute this bimodality to the initial conditions of the parent giant molecular clouds and we discuss its implication towards ...
openaire   +1 more source

Small RNA pathways in mammalian oocytes

FEBS Open Bio, EarlyView.
Three distinct small RNA pathways operate in mammalian oocytes: RNAi interference (RNAi), the microRNA (miRNA) pathway, and the PIWI‐associated RNA (piRNA) pathway. These pathways use small RNAs to guide sequence‐specific repression and contribute to oocyte biology by targeting genes and mobile elements or appear insignificant since different ...
Petr Svoboda, Josef Pasulka
wiley   +1 more source