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相关论文: A dearth of young and bright massive stars in the …

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We present a catalog of individual stellar and dust extinction properties along close to 500,000 sight lines in the southwest bar of the Small Magellanic Cloud (SMC). The catalog is based on multiband Hubble Space Telescope photometric data…

We present the first reconstruction of the star formation history (SFH) of the Large and Small Magellanic Clouds (LMC and SMC) using Long Period Variable stars. These cool evolved stars reach their peak luminosity in the near-infrared;…

星系天体物理 · 物理学 2016-10-26 Sara Rezaei kh. , Atefeh Javadi , Habib Khosroshahi , Jacco Th. van Loon

The yellow supergiant content of nearby galaxies provides a critical test of massive star evolutionary theory. While these stars are the brightest in a galaxy, they are difficult to identify because a large number of foreground Milky Way…

太阳与恒星天体物理 · 物理学 2015-05-19 Kathryn F. Neugent , Philip Massey , Brian Skiff , Maria R. Drout , Georges Meynet , Knut A. G. Olsen

We study the evolutionary and physical properties of evolved O stars in the Small Magellanic Cloud (SMC), with a special focus on their surface abundances to investigate the efficiency of rotational mixing as a function of age, rotation and…

We adopt a new chemical evolution model for the Large Magellanic Cloud (LMC) and thereby investigate its past star formation and chemical enrichment histories. The delay time distribution of type Ia supernovae recently revealed by type Ia…

宇宙学与河外天体物理 · 物理学 2015-06-11 Kenji Bekki , Takuji Tsujimoto

The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in…

星系天体物理 · 物理学 2009-07-22 Takuji Tsujimoto , Kenji Bekki

We used Spitzer's Infrared Spectrograph (IRS) to observe stars in the Small Magellanic Cloud (SMC) selected from the Midcourse Space Experiment (MSX) Point Source Catalog. We concentrate on the dust properties of oxygen-rich evolved stars,…

太阳与恒星天体物理 · 物理学 2017-01-13 K. E. Kraemer , G. C. Sloan , P. R. Wood , O. C. Jones , M. P. Egan

We present identifications and kinematic analysis of 7,426 massive ($\mathrm{\geq}8M_{\odot}$) stars in the Small Magellanic Cloud (SMC), using Gaia DR3 data. We used Gaia ($G_\mathrm{BP}-G_\mathrm{RP}$, $G$) color-magnitude diagram to…

星系天体物理 · 物理学 2025-02-19 Satoya Nakano , Kengo Tachihara , Mao Tamashiro

We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ~ 0.4 deg^2 located in the South-West of the Small Magelllanic Cloud (SMC)…

We have studied the optical spectra of a sample of 31 O- and early B-type stars in the Small Magellanic Cloud, 21 of which are associated with the young massive cluster NGC 346. Stellar parameters are determined using an automated fitting…

Aims: Following our comprehensive studies of the WR stars in the Milky Way, we now present spectroscopic analyses of almost all known WN stars in the LMC. Methods: For the quantitative analysis of the wind-dominated emission-line spectra,…

太阳与恒星天体物理 · 物理学 2014-05-14 R. Hainich , U. Rühling , H. Todt , L. M. Oskinova , A. Liermann , G. Gräfener , C. Foellmi , O. Schnurr , W. -R. Hamann

Observational studies have identified several sub-structures in different regions of the Magellanic Clouds, the nearest pair of interacting dwarf satellites of the Milky Way. By studying the metallicity of the sources in these…

星系天体物理 · 物理学 2026-01-14 Abinaya O. Omkumar , Smitha Subramanian , Maria-Rosa L. Cioni , Jos de Bruijne

Our goal in this paper is to derive a carbon-star luminosity function that will eventually be used to determine distances to galaxies at $50$-$60$ Mpc and hence yield a value of the Hubble constant. Cool N-type carbon stars exhibit redder…

太阳与恒星天体物理 · 物理学 2020-05-29 Paul Ripoche , Jeremy Heyl , Javiera Parada , Harvey Richer

Red Supergiants (RSGs) are cool (~4000K), highly luminous stars (L - 10^5 Lsun), and are among the brightest near-infrared (NIR) sources in star-forming galaxies. This makes them powerful probes of the properties of their host galaxies,…

星系天体物理 · 物理学 2015-06-11 Ben Davies , Rolf-Peter Kudritzki , Zach Gazak , Bertrand Plez , Maria Bergemann , Chris Evans , Lee Patrick

We present the first results from the Swift Ultraviolet Survey of the Magellanic Clouds (SUMaC), the highest resolution ultraviolet (UV) survey of the Magellanic Clouds yet completed. In this paper, we focus on the Small Magellanic Cloud…

星系天体物理 · 物理学 2017-04-19 Lea M. Z. Hagen , Michael H. Siegel , Erik A. Hoversten , Caryl Gronwall , Stefan Immler , Alex Hagen

We show the results of deep V and I HST photometry of 6 rich star clusters in the Large Magellanic Cloud with different ages and metallicities. The number of stars with measured magnitudes in each cluster varies from about 3000 to 10000. We…

天体物理学 · 物理学 2009-11-06 B. Santiago , S. Beaulieu , R. Johnson , G. Gilmore

We present the chemical abundances of Fe, alpha- and neutron-capture elements in 12 metal-poor Small Magellanic Cloud (SMC) giant stars, observed with the high-resolution spectrographs UVES/VLT and MIKE/Magellan. These stars have [Fe/H]…

We present a dense model grid with tailored input chemical composition appropriate for the Large Magellanic Cloud. We use a one-dimensional hydrodynamic stellar evolution code, which accounts for rotation, transport of angular momentum by…

太阳与恒星天体物理 · 物理学 2015-01-16 K. Köhler , N. Langer , A. de Koter , S. E. de Mink , P. A. Crowther , C. J. Evans , G. Gräfener , H. Sana , D. Sanyal , F. R. N. Schneider , J. S. Vink

The Magellanic Clouds provide the only laboratory to study the effect of metallicity and galaxy mass on molecular gas and star formation at high (~20 pc) resolution. We use the dust emission from HERITAGE Herschel data to map the molecular…

The stars in the Magellanic Clouds with the largest degree of obscuration are used to probe the highly uncertain physics of stars in the asymptotic giant branch (AGB) phase of evolution. Carbon stars in particular, provide key information…

太阳与恒星天体物理 · 物理学 2016-02-17 P. Ventura , A. I. Karakas , F. Dell'Agli , D. A. García-Hernández , M. L. Boyer , M. Di Criscienzo