Results 51 to 60 of about 3,144 (170)

The IACOB project

Astronomy & Astrophysics
Context. Massive stars play a fundamental role in the evolution of the Universe, yet several physical processes governing their evolution remain poorly constrained.
Sciarini Luca, de Burgos Abel, Rosu Sophie, Ekström Sylvia, Simón-Díaz Sergio, Georgy Cyril   +5 more
doaj   +1 more source

Weakly Magnetized Accreting Neutron Stars as Seen by IXPE

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT The Imaging X‐ray Polarimetry Explorer, recently awarded by the American Astronomical Society with the Bruno Rossi prize, observed several accreting neutron stars in X‐ray binaries during the first 2 years of its prime mission. Results obtained for weakly magnetized neutron stars allow us to model the geometry and the physical status of the ...
Alessandro Di Marco, on behalf of IXPE Science Team   +1 more
wiley   +1 more source

The chemistry of dust formation in red supergiants

, 2013
Massive stars in their late stages of evolution as Red Supergiants experience mass loss. The resulting winds show various degrees of dynamical and chemical complexity and produce molecules and dust grains.
I. Cherchneff, Cherchneff, I.
core   +1 more source

Long-Term Spectroscopic Monitoring and Surveys of Early-Type Stars with and without Circumstellar Envelopes

Open Astronomy, 2017
Ongoing studies of different groups of stars result in improving our knowledge of their fundamental parameters and evolutionary status. Also, they result in finding new phases of stellar evolution, which require theoretical explanation. At the same time,
Miroshnichenko Anatoly S., Danford Steven, Zharikov Sergei V., Manset Nadine, Levato Hugo, Grosso Monica, Korčáková Daniela, Kusakin Anatoly V., Khokhlov Serik A., Prendergast Peter   +9 more
doaj   +1 more source

Insulin‐Like Growth Factor 1 (IGF1) in the Chinese Soft‐Shelled Turtle, Pelodiscus sinensis: Molecular Characterization, Expression Pattern, and Polymorphism Analysis

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Insulin‐like growth Factor 1 (IGF1) plays a vital role in vertebrate growth, and its sexually biased expression may influence the development and evolution of sexual size dimorphism (SSD). To investigate the role of IGF1 in regulating the growth of the Chinese soft‐shelled turtle (Pelodiscus sinensis), this study quantified IGF1 mRNA abundance across ...
Dan Zeng, Yangyang Tu, Gongwei Sun, Mengying Chen, Yunsheng Zhang, Xiaoqing Wang, Liangguo Liu, Levy Otwoma   +7 more
wiley   +1 more source

Red Supergiants in the Milky Way and Nearby Galaxies

Galaxies
Identifications of red supergiants (RSGs) in the Milky Way and nearby galaxies have experienced an exponential increase in recent years, driven by advancements in selection techniques, the continued expansion of archival datasets, and a steady increase ...
Alceste Z. Bonanos
doaj   +1 more source

The regional economics of mineral resource wealth in Africa

Economica, Volume 91, Issue 364, Page 1424-1453, October 2024.
Abstract We study the regional economics of mineral resource activity in Africa. Using geocoded data on mine openings and closures in Africa, we document that mining regions experience local economic booms while a mine is in operation. We then explore how mineral resources affect non‐mining regions.
Zareh Asatryan, Thushyanthan Baskaran, Carlo Birkholz, Patrick Hufschmidt   +3 more
wiley   +1 more source

Micritisation products in the inner ramp settings of the Abu Dhabi Lagoon

The Depositional Record, Volume 10, Issue 4, Page 402-425, September 2024.
Journey inside carbonate grains; internal microstructures of micritic envelopes and peloids in the Abu Dhabi lagoon. Abstract In numerous carbonate reservoirs in the Middle East, peloidal packstone‐grainstones are rock types with excellent pore storage potential in micritised microporous grains.
Thomas Teillet, Mohamed Harkat, Kai Hachmann, Elisa Garuglieri, Viswasanthi Chandra, Daniele Daffonchio, Mónica Sánchez‐Román, Volker Vahrenkamp   +7 more
wiley   +1 more source

Hidden massive eclipsing binaries in red supergiant systems

Astronomy & Astrophysics
Context. The majority of massive stars are part of binary systems and may interact with their companions during their evolution. This has important consequences for systems in which one star evolves into a red supergiant (RSG).
Jadlovský D., Molnár L., Ercolino A., Bernini-Peron M., Mérand A., Krtička J., Wang L., Ádám R. Z., Baade D., Bayo A., González-Torà G., Granzer T., Henry G. W., Janík J., Kolář J., Kravchenko K., Langer N., Oskinova L. M., Pauli D., Ramachandran V., Rubio A. C., Sander A. A. C., Strassmeier K. G., Weber M., Wittkowski M., Brahm R., Schaffenroth V., Vanzi L., Skarka M.   +28 more
doaj   +1 more source

Vibrational Relaxation of D2O Induced by Collision with He: A Rigid Bender Close Coupling Study

ChemPhysChem, Volume 25, Issue 15, August 1, 2024.
The vibrational quenching cross sections for the relaxation of the D2O (ν2=1,3ka,kc) molecule by collision with He are presented. A monotonic increase of the cross sections is observed for high collision energies. Abstract The vibrational relaxation of the first excited bending state of D2O induced by collision with He is studied at the close coupling ...
Ricardo Manuel García‐Vázquez, Lisán David Cabrera‐González, Otoniel Denis Alpizar, Thierry Stoecklin   +3 more
wiley   +1 more source