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Aims. HD166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve independently, following single-star…

太阳与恒星天体物理 · 物理学 2017-11-22 L. Mahy , Y. Damerdji , E. Gosset , C. Nitschelm , P. Eenens , H. Sana , A. Klotz

The Tarantula Nebula (30 Doradus) is the most important star-forming complex in the Local Group, offering a microscope on starburst astrophysics. At its heart lies the exceptionally rich young stellar cluster R136, containing the most…

高能天体物理现象 · 物理学 2024-04-25 Leisa K. Townsley , Patrick S. Broos , Matthew S. Povich

The Tarantula Nebula (30 Dor) is a spectacular star-forming region in the Large Magellanic Cloud, seen through gas in the Galactic Disc and Halo. Diffuse Interstellar Bands offer a unique probe of the diffuse, cool-warm gas in these…

We estimate physical parameters for the late-type massive stars observed as part of the VLT-FLAMES Tarantula Survey (VFTS) in the 30 Doradus region of the Large Magellanic Cloud (LMC). The observational sample comprises 20 candidate red…

The Wolf-Rayet star Mk 34 was observed more than 50 times as part of the deep T-ReX Chandra ACIS-I X-ray imaging survey of the Tarantula Nebula in the Large Magellanic Cloud conducted between 2014 May and 2016 January. Its brightness showed…

太阳与恒星天体物理 · 物理学 2018-03-14 A. M. T. Pollock , P. A. Crowther , K. Tehrani , Patrick S. Broos , Leisa K. Townsley

We present the discovery of NGTS J214358.5-380102, an eccentric M-dwarf binary discovered by the Next Generation Transit Survey. The system period of 7.618 days is greater than many known eclipsing M-dwarf binary systems. Its orbital…

The spectral and spatial characteristics of two special categories of O stars found in the VFTS dataset are presented. One of them comprises very rapid rotators, including several more extreme than any previously known. These objects are…

太阳与恒星天体物理 · 物理学 2011-12-20 Nolan R. Walborn , Hugues Sana , William D. Taylor , Sergio Simon-Diaz , Christopher J. Evans

Double-lined spectroscopic binary systems, containing a Wolf-Rayet and a massive O-type star, are key objects for the study of massive star evolution because these kinds of systems allow the determination of fundamental astrophysical…

太阳与恒星天体物理 · 物理学 2015-09-25 A. Collado , R. Gamen , R. H. Barbá , N. Morrell

We present the spectroscopic analysis of 333 OB-type stars extracted from VLT-MUSE observations of the central 30 x 30 pc of NGC 2070 in the Tarantula Nebula on the Large Magellanic Cloud, the majority of which are analysed for the the…

太阳与恒星天体物理 · 物理学 2021-04-14 N. Castro , P. A. Crowther , C. J. Evans , J. S. Vink , J. Puls , A. Herrero , M. Garcia , F. J. Selman , M. M. Roth , S. Simón-Díaz

TLUSTY non-LTE model atmosphere calculations have been used to determine atmospheric parameters and nitrogen (N) abundances for 34 single and 18 binary B-type supergiants (BSGs). The effects of flux contribution from an unseen secondary…

We compile the first comprehensive census of hot luminous stars in the 30 Doradus (30 Dor) star forming region of the LMC. The census extends to a radius of 10arcmin (150pc) from the central cluster, R136. Stars were selected…

The galactic cluster Westerlund 1 contains a rich population of evolved, massive stars, and a high binary fraction has been inferred from previous multiwavelength observations. We use multi-epoch spectroscopy of a large sample of early-type…

太阳与恒星天体物理 · 物理学 2022-04-20 B. W. Ritchie , J. S. Clark , I. Negueruela , F. Najarro

A review of the properties of the Tarantula Nebula (30 Doradus) in the Large Magellanic Cloud is presented, primarily from the perspective of its massive star content. The proximity of the Tarantula and its accessibility to X-ray through…

太阳与恒星天体物理 · 物理学 2019-11-11 Paul Crowther

The initial distribution of spin rates of massive stars is a fingerprint of their elusive formation process. It also sets a key initial condition for stellar evolution and is thus an important ingredient in stellar population synthesis. So…

Double white dwarf binaries are an important remnant of binary evolution as they are possible type Ia supernova progenitors and strong sources of gravitational waves in the low-frequency regime. The double-lined double white dwarf (DBL)…

$\zeta$ Phoenicis is a bright binary system containing B6V and B8V stars. It has deep total and annular eclipses, a slightly eccentric orbit with a period of 1.669 d, apsidal motion and a third body on a wider orbit. The Transiting…

太阳与恒星天体物理 · 物理学 2020-12-22 John Southworth

In a variability survey of M81 using the Large Binocular Telescope we have discovered a peculiar eclipsing binary (MV ~ -7.1) in the field of the dwarf galaxy Holmberg IX. It has a period of 272 days and the light curve is well-fit by an…

We present radial velocity and photometry for four early-type, massive double-lined spectroscopic binaries in the R136 cluster. Three of these systems are eclipsing, allowing orbital inclinations to be determined. One of these systems,…

天体物理学 · 物理学 2009-11-07 Philip Massey , Laura R. Penny , Julia Vukovich

We present results from the B-type Binaries Characterisation (BBC) programme, a multi-epoch spectroscopic study of 88 early B-type binary candidates in the 30 Doradus region of the Large Magellanic Cloud (LMC). From radial-velocity analysis…

太阳与恒星天体物理 · 物理学 2021-08-11 J. I. Villaseñor , W. D. Taylor , C. J. Evans , O. H. Ramírez-Agudelo , H. Sana , L. A. Almeida , S. E. de Mink , P. L. Dufton , N. Langer

Spectroscopic and photometric behaviour of the class of recurrent novae with giant secondaries (T Coronae Borealis, RS Ophiuchi, V3890 Sagittarii and V745 Scorpii) at quiescence are presented in this study. The hot component in these…

天体物理学 · 物理学 2007-05-23 G. C. Anupama , J. Mikolajewska