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Over the last decade, tremendous strides have been achieved in our understanding of magnetism in main sequence hot stars. In particular, the statistical occurrence of their surface magnetism has been established (~10%) and the field origin…

The majority of massive stars are formed in binary systems. It is hence reasonable to expect that most core-collapse supernovae (CCSNe) take place in binaries and the existence of a companion star may leave some imprints in observed…

高能天体物理现象 · 物理学 2015-06-19 Ryosuke Hirai , Hidetomo Sawai , Shoichi Yamada

We study the evolution of populations of binary stars within massive cluster-forming regions. We simulate the formation of young massive star clusters within giant molecular clouds with masses ranging from 2 x 10$^{4}$ to 3.2 x 10$^{5}$…

Stellar systems composed of single, double, triple or high-order systems are rightfully regarded as the fundamental building blocks of the Milky Way. Binary stars play an important role in formation and evolution of the Galaxy. Through…

Binary/multiple status can affect stars at all stages of their lifetimes: evolution onto the main sequence, properties on the main sequence, and subsequent evolution. 5 $M_\odot$ stars have provided a wealth of information about the binary…

太阳与恒星天体物理 · 物理学 2016-02-09 Nancy Remage Evans

Massive stars are the drivers of star formation and galactic dynamics due to their relatively short lives and explosive demises, thus impacting all of astrophysics. Since they are so impactful on their environments, through their winds on…

太阳与恒星天体物理 · 物理学 2019-12-16 Kyle C. Augustson

Recent theoretical predictions for low metallicity massive stars predict that these stars should have drastically reduced equatorial winds (mass loss) while on the main sequence, and as such should retain most of their angular momentum.…

天体物理学 · 物理学 2009-11-10 Laura R. Penny , Amanda J. Sprague , George Seago , Douglas R. Gies

Although rare, massive stars, being the main sources of ionizing radiation, chemical enrichment and mechanical energy in the Galaxy, are the most important objects of the stellar population. This review presents the many different aspects…

天体物理学 · 物理学 2007-05-23 Yael Naze

OB associations are low-density groups of young stars that are dispersing from their birth environment into the Galactic field. They are important for understanding the star formation process, early stellar evolution, the properties and…

太阳与恒星天体物理 · 物理学 2022-03-21 Nicholas J. Wright , Simon Goodwin , Robin D. Jeffries , Marina Kounkel , Eleonora Zari

We have conducted a programme to determine the fundamental parameters of a substantial number of eclipsing binaries of spectral types O and B in the Small Magellanic Cloud. New spectroscopic data, obtained with the two-degree-field…

天体物理学 · 物理学 2011-09-29 R. W. Hilditch , I. D. Howarth , T. J. Harries

We present a large sample (20 in total) of optical spectra of Small Magellanic Cloud (SMC) High-Mass X-ray Binaries obtained with the 2dF spectrograph at the Anglo-Australian Telescope. All of these sources are found to be Be/X-ray binaries…

高能天体物理现象 · 物理学 2014-11-20 Vallia Antoniou , Despina Hatzidimitriou , Andreas Zezas , Pablo Reig

We have analysed publicly available MACHO observations of 6833 variable stars in the Large Magellanic Cloud, classified as eclipsing binaries. After finding that a significant fraction of the sample was misclassified, we redetermined…

天体物理学 · 物理学 2009-11-11 A. Derekas , L. L. Kiss , T. R. Bedding

We present an analysis of the long-term optical/IR behavior of 111 high-mass X-ray binaries (HMXBs) in the Small Magellanic Cloud based on data from the OGLE collaboration. Most systems exhibit variability on a range of time scales. This…

高能天体物理现象 · 物理学 2025-01-24 Helena Treiber , Georgios Vasilopoulos , Charles Bailyn , Frank Haberl , Andrzej Udalski

Rotation can have severe consequences for the evolution of massive stars. It is now considered as one of the main parameters, alongside mass and metallicity that determine the final fate of single stars. In massive, fast rotating stars…

太阳与恒星天体物理 · 物理学 2015-05-20 S. E. de Mink , M. Cantiello , N. Langer , O. R. Pols

Eclipsing binaries offer a unique opportunity to determine fundamental physical parameters of stars using the constraints on the geometry of the systems. Here we present a reanalysis of publicly available two-color observations of about…

天体物理学 · 物理学 2009-03-09 A. Derekas , L. L. Kiss , T. R. Bedding

We present the Class I protostellar binary separation distribution based on the data tabulated in the companion paper. We verify the excess of Class I binary stars over solar-type main-sequence stars, especially at separations beyond 500…

天体物理学 · 物理学 2009-11-13 Michael Connelley , Bo Reipurth , Alan Tokunaga

The proper motion of massive stars could cause them to explode far from the geometric centers of their wind-driven bubbles and thereby could affect the symmetry of the resulting diffuse supernova remnants. We use this fact to explain the…

天体物理学 · 物理学 2007-12-28 V. V. Gvaramadze

Most stars are in multiple systems, with the majority of those being binaries. A large number of planets have been confirmed in binary stars and therefore it is important to understand their formation and dynamical evolution. We perform…

地球与行星天体物理 · 物理学 2024-08-15 Matthew Teasdale , Dimitris Stamatellos

The properties of outflows powered by massive stars are reviewed with an emphasis on the nearest examples, Orion and Cepheus-A. The Orion OMC1 outflow may have been powered by the dynamical decay of a non-hierarchical massive star system…

天体物理学 · 物理学 2007-12-13 John Bally

We find that the emission line object OGLEJ005039.05-725751.4, a member of the cluster OGLE-CL SMC 64, exhibits a peculiar light curve pattern repeating with a recurrence time of 141.45 days. The light curve resembles periodic outbursts…

太阳与恒星天体物理 · 物理学 2018-08-08 Ronald E. Mennickent , Thomas Rivinius , Lydia Cidale , Igor Soszyński , J. G. Fernández-Trincado
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