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相关论文: Smallest scale clumpy star formation in Stephan's …

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A mosaic of four UIT far-UV (FUV; 1620A) images, which covers most of the SMC bar, is presented, with derived stellar and HII region photometry. The UV morphology of the SMC's Bar shows that recent star formation there has left striking…

天体物理学 · 物理学 2007-05-23 Robert H. Cornett , Theodore P. Stecher , the UIT Science Team

We study young star-forming clumps on physical scales of 10-500 pc in the Lyman-Alpha Reference Sample (LARS), a collection of low-redshift (z = 0.03-0.2) UV-selected star-forming galaxies. In each of the 14 galaxies of the sample, we…

星系天体物理 · 物理学 2019-06-19 Matteo Messa , Angela Adamo , Göran Östlin , Jens Melinder , Matthew Hayes , Johanna S. Bridge , John Cannon

We present the clump populations detected in 18 lensed galaxies at redshifts 1 to 8.5 within the lensing cluster field SMACS0723. The recent JWST Early Release Observations of this poorly known region of the sky have revealed numerous…

AIMS: Search for star formation regions in the hosts of potentially young radio galaxies (Gigahertz Peaked Spectrum and Compact Steep Spectrum sources). METHODS: Near-UV imaging with the Hubble Space Telescope Advanced Camera for Surveys.}…

天体物理学 · 物理学 2009-11-13 A. Labiano , C. P. O'Dea , P. D. Barthel , W. H. de Vries , S. A. Baum

We investigate the resolved properties of star-forming clumps and their host galaxies at $0.5<z<5$ in the JWST CANUCS fields. We find that the fraction of clumpy galaxies peaks near $z\sim2$ for galaxies with masses of…

We study the populations of stellar clumps in three high-redshift galaxies, at z=4.92, 4.88 and 4.03, gravitationally lensed by the foreground galaxy clusters MS1358, RCS0224 and MACS0940, respectively. The lensed galaxies consist of…

High-redshift galaxies exhibit compact regions of intense star formation, known as ``clumps,'' which are conspicuous in the rest-frame ultraviolet. Studying them can shed light on how they form and evolve and inform theoretical models of…

星系天体物理 · 物理学 2026-04-08 Alexander de la Vega , Bahram Mobasher , Zahra Sattari , Nima Chartab , Faezeh Manesh , Niloofar Sharei

We present a study of the hierarchical clustering of the young stellar clusters in six local (3--15 Mpc) star-forming galaxies using Hubble Space Telescope broad band WFC3/UVIS UV and optical images from the Treasury Program LEGUS (Legacy…

We study the ultraviolet (UV) continuum $\beta$ slope of a sample of 166 clumps, individual star-forming regions observed in high redshift galaxies. They are hosted by 67 galaxies with redshift between 2 and 6.2, strongly lensed by the…

Although giant clumps of stars are crucial to galaxy formation and evolution, the most basic demographics of clumps are still uncertain, mainly because the definition of clumps has not been thoroughly discussed. In this paper, we study the…

We characterize the morphological properties of a statistically relevant sample of H$\alpha$ and UV young star-forming clumps and optical complexes, observed with the \textit{Hubble Space Telescope} in six galaxies of the GASP sample…

星系天体物理 · 物理学 2023-10-12 Giunchi , E , Poggianti , B. M. , Gullieuszik , M. , Moretti , A. , Werle , A. , Zanella , A. , Vulcani , B. , Tonnesen , S. , Calzetti , D. , Bellhouse , C. , Scarlata , C. , Bacchini , C

We present UV (2300 Ang) images, obtained with the HST Faint Object Camera, of the central 20'' of five galaxies containing circumnuclear star-forming rings. The five galaxies are from a well-defined sample of 103 normal, nearby galaxies we…

We present a local sample (z<0.15) of 280 Star-Forming Compact Groups (SFCGs) of galaxies identified in the ultraviolet Galaxy Evolution EXplorer (GALEX) All-sky Imaging Survey (AIS). So far, just one prototypical example of SFCG, the Blue…

星系天体物理 · 物理学 2015-09-09 Jonathan D. Hernandez-Fernandez , Claudia Mendes de Oliveira

We explore how the estimated star formation rate (SFR) of a sample of isolated, massive dusty star-forming galaxies at early cosmic epochs ($1.5 < z < 3.5$) changes when their ultraviolet (UV) to near-infrared (NIR) spectral energy…

星系天体物理 · 物理学 2019-12-24 Zacharias E. Escalante , Shardha Jogee , Sydney Sherman

Rest-frame far-ultraviolet (FUV) luminosities form the `backbone' of our understanding of star formation at all cosmic epochs. These luminosities are typically corrected for dust by assuming that the tight relationship between the UV…

天体物理学 · 物理学 2007-05-23 Eric F. Bell

Star-forming, H$\alpha$-emitting clumps are found embedded in the gaseous tails of galaxies undergoing intense ram-pressure stripping in galaxy clusters, so-called jellyfish galaxies. These clumps offer a unique opportunity to study star…

JWST observations of galaxies at $z\gtrsim 8$ suggest that they are more luminous and clumpier than predicted by most models, prompting several proposals on the physics of star formation and feedback in the first galaxies. In this paper, we…

星系天体物理 · 物理学 2024-11-15 Kazuyuki Sugimura , Massimo Ricotti , Jongwon Park , Fred Angelo Batan Garcia , Hidenobu Yajima

We present total infrared (IR) and ultraviolet (UV) luminosity functions derived from large representative samples of galaxies at z ~ 0, selected at IR and UV wavelengths from the IRAS IIFSCz catalogue, and the GALEX AIS respectively. We…

宇宙学与河外天体物理 · 物理学 2015-05-27 M. S. Bothwell , R. C. Kennicutt , B. D. Johnson , Y. Wu , J. C. Lee , D. Dale , C. Engelbracht , D. Calzetti , E. Skillman

We have tested some relations for star formation rates used in extra-galactic studies for regions within the Galaxy. In nearby molecular clouds, where the IMF is not fully-sampled, the dust emission at 24 micron greatly underestimates star…

星系天体物理 · 物理学 2015-06-15 Nalin Vutisalchavakul , Neal J. Evans

Analysis of Hubble Space Telescope/Wide Field Planetary Camera 2 images of Stephan's Quintet, Hickson Compact Group 92, yielded 115 candidate star clusters (with V-I < 1.5). Unlike in merger remants, the cluster candidates in Stephan's…

天体物理学 · 物理学 2009-11-06 S. C. Gallagher , J. C. Charlton , S. D. Hunsberger , D. Zaritsky , B. C. Whitmore