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相关论文: Starburst-like Dust Extinction in the Small Magell…

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We explore variations of the dust extinction law of the Milky Way by selecting stars from the Swift/UVOT Serendipitous Source Catalogue, cross-matched with Gaia DR2 and 2MASS to produce a sample of 10,452 stars out to ~4kpc with photometry…

星系天体物理 · 物理学 2021-05-12 I. Ferreras , M. Tress , G. Bruzual , S. Charlot , M. Page , V. Yershov , P. Kuin , D. Kawata , M. Cropper

The kinematics of 150 carbon stars observed at moderate dispersion on the periphery of the Small Magellanic Cloud are compared with the motions of neutral hydrogen and early type stars in the Inter-Cloud region. The distribution of radial…

天体物理学 · 物理学 2009-10-31 William Kunkel , Serge Demers , M. J. Irwin

We derive the bolometric to X-ray correlation for a local sample of normal and starburst galaxies and use it, in combination with several UV reddening schemes, to predict the 2--8 keV X-ray luminosity for a sample of 24 Lyman-break galaxies…

天体物理学 · 物理学 2009-11-07 Mark Seibert , Timothy M. Heckman , Gerhardt R. Meurer

The attenuation of starlight by dust in galactic environments is investigated through models of radiative transfer in a spherical, clumpy ISM. Extinction properties for MW, LMC, and SMC dust types are considered. It is illustrated that the…

星系天体物理 · 物理学 2016-12-28 Kwang-Il Seon , Bruce T. Draine

We have computed the evolving ultraviolet-millimeter spectral energy distribution (SED) produced by proto-galactic starbursts at high redshift, incorporating the chemical evolution of the interstellar medium in a consistent manner. Dust…

天体物理学 · 物理学 2009-10-31 Raul Jimenez , Paolo Padoan , James Dunlop , David Bowen , Mika Juvela , Francesca Matteucci

We analyze the optical-near infrared spectra of 33 quasars with redshifts 3.9<z<6.4 to investigate the properties of dust extinction at these cosmic epochs. The SMC extinction curve has been shown to reproduce the dust reddening of most…

宇宙学与河外天体物理 · 物理学 2015-05-19 S. Gallerani , R. Maiolino , Y. Juarez , T. Nagao , A. Marconi , S. Bianchi , R. Schneider , F. Mannucci , T. Oliva , C. J. Willott , L. Jiang , X. Fan

We analyze low resolution Spitzer infrared (IR) 5-14 micron spectra of the diffuse emission toward a carefully selected sample of stars. The sample is composed of sight lines toward stars that have well determined ultraviolet (UV)…

星系天体物理 · 物理学 2022-02-02 Derck Massa , Karl D. Gordon , E. L. Fitzpatrick

We present the spatially-resolved star formation and chemical enrichment history of the Small Magellanic Cloud (SMC) across the entire central $4-degree x 4.5-degree area of the main body, based on UBVI photometry from our Magellanic Clouds…

天体物理学 · 物理学 2008-12-18 J. Harris , D. Zaritsky

We use SDSS photometry of 73 million stars to simultaneously obtain best-fit main-sequence stellar energy distribution (SED) and amount of dust extinction along the line of sight towards each star. Using a subsample of 23 million stars with…

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 derive the star formation history in four regions of the Small Magellanic Cloud (SMC) using the deepest VI color-magnitude diagrams (CMDs) ever obtained for this galaxy. The images were obtained with the Advanced Camera for Surveys…

星系天体物理 · 物理学 2015-06-16 M. Cignoni , A. A. Cole , M. Tosi , J. S. Gallagher , E. Sabbi , J. Anderson , E. K. Grebel , A. Nota

We measure the dust and gas content of the three sub-millimeter galaxies (SMGs) in the GN20 proto-cluster at $z=4.05$ using new IRAM Plateau de Bure interferometer (PdBI) CO(4-3) and 1.2-3.3 mm continuum observations. All these three SMGs…

Dust in the host galaxies of gamma-ray bursts (GRBs) dims and reddens their afterglow spectra. Knowledge of the nature of this dust is crucial for correcting for extinction, providing clues to the nature of GRB progenitors, and probing the…

天体物理学 · 物理学 2009-11-11 Shilun Chen , Aigen Li , Daming Wei

The presence of the dust in the circumnuclear region strongly affects our view of the nucleus itself. The effect is strong in type 2 objects but weaker effect is likely to be present in type 1 objects as well. In these objects a correction…

天体物理学 · 物理学 2007-05-23 B. Czerny

We study the star formation rate and dust extinction properties of a sample of nearby star forming galaxies as derived from Halpha and UV (2000 A) observations and we compare them to those of a sample of starburst galaxies. The dust…

天体物理学 · 物理学 2016-08-30 V. Buat , A. Boselli , G. Gavazzi , C. Bonfanti

The structure and dynamics of the star-forming disk of the Small Magellanic Cloud (SMC) have long confounded us. The SMC is widely used as a prototype for galactic physics at low metallicity, and yet we fundamentally lack an understanding…

We derive the spatially-resolved star formation history (SFH) for a $96$ deg$^2$ area across the main body of the Large Magellanic Cloud (LMC), using the near-infrared photometry from the VISTA survey of the Magellanic Clouds (VMC). The…

We present Space Telescope Imaging Spectrograph (STIS) broad band imagery and optical slitless spectroscopy of three young star clusters in the Small Magellanic Cloud (SMC). MA 1796 and MG 2 were previously known as Planetary Nebulae, and…

天体物理学 · 物理学 2009-11-10 Letizia Stanghellini , Eva Villaver , Richard A. Shaw , Max Mutchler

We summarize recent studies of the predominantly neutral gas in the Magellanic Clouds (MC), based on combinations of high-resolution optical spectra and UV spectra obtained with IUE, HST, and FUSE. Similarities in relative gas-phase…

天体物理学 · 物理学 2007-05-23 Daniel E. Welty

We present a study of the three-dimensional (3D) structure of the Large Magellanic Cloud (LMC) using ~2.2 million red clump (RC) stars selected from the Survey of the MAgellanic Stellar History. To correct for line-of-sight dust extinction,…