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相关论文: A panchromatic analysis of starburst galaxy M82: P…

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Interstellar dust plays a central role in shaping the detailed structure of the interstellar medium, thus strongly influencing star formation and galaxy evolution. Dust extinction provides one of the main pillars of our understanding of…

Recent results from Hubble Space Telescope (HST) have resolved starbursts as collections of compact young stellar clusters. Here we present a photometric catalogue of the young stellar clusters in the nuclear starburst of M82, observed with…

天体物理学 · 物理学 2016-08-16 V. P. Melo , C. Muñoz-Tuñón , J. Maíz-Apellániz , G. Tenorio-Tagle

Interstellar dust is a major foreground contaminant for many observations and a key component in the chemistry of the interstellar medium, yet its properties remain highly uncertain. Using low-resolution spectra, we accurately measure the…

星系天体物理 · 物理学 2024-07-23 Xiangyu Zhang , Gregory Green

We investigate the origin of the strong radial gradient in the ultraviolet-to-infrared ratio in the spiral galaxy NGC 300, and emphasize the importance of local variations in the interstellar medium geometry, concluding that they cannot be…

天体物理学 · 物理学 2009-11-11 H. Roussel , A. Gil de Paz , M. Seibert , G. Helou , B. F. Madore , C. Martin

[Abridged] We present Gemini-N GMOS-IFU observations of the central starburst clumps and inner wind of M82, together with WIYN DensePak IFU observations of the inner 2x0.9kpc of the disk. These cover the emission lines of H$\alpha$, [NII],…

星系天体物理 · 物理学 2011-02-11 M. S. Westmoquette , L. J. Smith , J. S. Gallagher , G. Trancho , N. Bastian , I. S. Konstantopoulos

We explore the extinction properties of the dust in the distant universe through the afterglows of high-redshifted GRBs based on the "Drude" model which, unlike previous studies, does not require a prior assumption of template extinction…

天体物理学 · 物理学 2008-12-18 S. L. Liang , Aigen Li

We discuss dust properties in the interstellar medium (ISM) of nearby normal galaxies, by comparing observations in the ultraviolet (UV) with simulations by a radiative transfer model. The observed UV colours of nearby galaxies show a…

When measuring star formation rates using ultraviolet light, correcting for dust extinction is a critical step. However, with the variety of dust extinction curves to choose from, the extinction correction is quite uncertain. Here, we use…

We present a multi-wavelength study of the nearby starburst galaxy M 82 by combining high-resolution Far-ultraviolet (FUV) imaging from the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat and archival Chandra X-ray observations.…

星系天体物理 · 物理学 2026-02-25 Nilkanth Vagshette , Satish S. Sonkamble , Madhav Patil , Sachindra Naik , Ilani Loubser

We attempt to interpret existing data on the evolution of the UV luminosity function and UV colours, $\beta$, of galaxies at $5 \leq z \leq 8$, to improve our understanding of their dust content and ISM properties. To this aim, we…

The empirical reddening function for starburst galaxies generated by Calzetti and her co-workers has proven very successful, and is now used widely in the observational literature. Despite its success, however, the physical basis for this…

天体物理学 · 物理学 2009-11-10 Joerg Fischera , Michael A. Dopita , Ralph S. Sutherland

The Large and Small Magellanic Clouds (LMC and SMC, respectively) are observed to have characteristic dust extinction curves that are quite different from those of the Galaxy (e.g., strength of the 2175 A bump). Although the dust…

星系天体物理 · 物理学 2015-09-09 Kenji Bekki , Hiroyuki Hirashita , Takuji Tsujimoto

We have obtained detailed imaging Fabry-Perot observations of the nearby galaxy M82, in order to understand the physical association between the high-velocity outflow and the starburst nucleus. The observed velocities of the emitting gas in…

天体物理学 · 物理学 2010-01-07 P. L. Shopbell , J. Bland-Hawthorn

We present {\em ROSAT} PSPC and HRI observations of the galactic wind from the starburst galaxy M82. \mbox{X-ray} emission from the wind is detected to a distance of $\sim6\kpc$ from the plane of the galaxy. Making use of the PSPC's mixture…

天体物理学 · 物理学 2007-05-23 Dave Strickland , Trevor Ponman , Ian Stevens

A diverse range of dust attenuation laws is found in star-forming galaxies. In particular, Tress et al. (2018) studied the SHARDS survey to constrain the NUV bump strength (B) and the total-to selective ratio (Rv) of 1,753 star-forming…

To investigate the nature of starbursts' dust, we constructed a model of the stars and dust in starburst galaxies and applied it to 30 observed starburst spectral energy distributions (SEDs). The starburst model was constructed by combining…

天体物理学 · 物理学 2008-11-26 K. D. Gordon , D. Calzetti , A. N. Witt

Deep submillimeter (submm) continuum imaging observations of the starburst galaxy M82 are presented at 350, 450, 750 and 850 micron wavelengths, that were undertaken with the Submillimetre Common-User Bolometer Array (SCUBA) on the James…

天体物理学 · 物理学 2015-05-13 Lerothodi L. Leeuw , E. Ian Robson

Galactic winds are a crucial player in galaxy formation and evolution, but observations of them have proven extraordinarily difficult to interpret, leaving large uncertainties even in basic quantities such as mass outflow rates. Part of…

星系天体物理 · 物理学 2022-11-30 Yuxuan Yuan , Mark R. Krumholz , Crystal L. Martin

Dust attenuation curves in external galaxies are useful to study their dust properties as well as to interpret their intrinsic spectral energy distributions. In particular the presence or absence of a UV bump at 2175 A remains an open issue…