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相关论文: Star-Formation Knots in IRAS Galaxies

200 篇论文

Stars form by gravoturbulent fragmentation of interstellar gas clouds. The supersonic turbulence ubiquitously observed in Galactic molecular gas generates strong density fluctuations with gravity taking over in the densest and most massive…

天体物理学 · 物理学 2007-05-23 Ralf S. Klessen , Javier Ballesteros-Paredes , Yuexing Li , Mordecai-Mark Mac Low

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

The relationship between star formation and infrared emission in galaxies will be investigated. If galaxies were simple objects and young stars were completely covered with dust, then all the absorbed light of the young stars would be…

天体物理学 · 物理学 2023-03-08 Nikolaos D. Kylafis , Angelos Misiriotis

We present deep optical B, V, R images of a sample of 10 interacting systems which were selected for their resemblance to disturbed galaxies at high redshift. Photometry is performed on knots in the tidal features of the galaxies. We…

天体物理学 · 物理学 2007-05-23 Peter M. Weilbacher , P. -A. Duc , U. Fritze-v. Alvensleben , P. Martin , K. J. Fricke

We have observed the cluster RX J0152.7-1357 (z$\sim$0.83) at 24$\mu$m with the Multiband Imaging Photometer for Spitzer (MIPS). We detected twenty-two sources associated with spectroscopically confirmed cluster members, while ten more have…

天体物理学 · 物理学 2008-11-26 D. Marcillac , J. Rigby , G. Rieke , D. Kelly

Using Spitzer/IRAC observations of a region to be observed by the CoRoT satellite, we have unraveled a new complex star-forming region at low metallicity in the outer Galaxy. We perform a study of S284 in order to outline the chain of…

星系天体物理 · 物理学 2015-05-13 E. Puga , S. Hony , C. Neiner , A. Lenorzer , A. -M. Hubert , L. B. F. M. Waters , F. Cusano , V. Ripepi

We report the discovery of a new young stellar cluster in the outer Galaxy located at the position of an IRAS PSC source that has been previously mis-identified as an external galaxy. The cluster is seen in our near-infrared imaging towards…

太阳与恒星天体物理 · 物理学 2015-08-06 J. L. Yun , D. Elia , A. A. Djupvik , J. M. Torrelles , S. Molinari

Observations for seven infrared luminous starburst galaxies are reported in the mid-infrared from 8 - 18 microns using the Keck Telescopes with spatial resolution approaching the diffraction limit. All of the galaxies observed show evidence…

An evolutionary model of star formation in ULIRGs was created using existing star formation and radiative transfer codes (STARBURST99, RADMC and RADICAL) as building blocks. The results of the simulations are compared to data from two IRAS…

天体物理学 · 物理学 2007-05-23 A. F. Loenen , W. A. Baan , M. Spaans

We analyze the physical conditions in the interstellar gas of 11 actively star-forming galaxies at z~2, based on integral-field spectroscopy from the ESO-VLT and HST/NICMOS imaging. We concentrate on the high H-alpha surface brightnesses,…

宇宙学与河外天体物理 · 物理学 2011-02-11 M. D. Lehnert , N. P. H. Nesvadba , L. Le Tiran , P. Di Matteo , W. van Driel , L. S. Douglas , L. Chemin , F. Bournaud

A strong correlation has been known to exist between the far-infrared (FIR) and radio emission of the star-forming galaxies. Observations have shown that although scatter is present, this correlation holds over a range of redshifts and does…

星系天体物理 · 物理学 2019-10-02 Marina Pavlovic , Tijana Prodanovic

We present low resolution (R~450) K-band spectroscopy for 16 of the 43 circumnuclear star-forming knots in M100 identified by Ryder & Knapen (1999). We compare our measurements of equivalent widths for the Br-gamma emission line and CO 2.29…

天体物理学 · 物理学 2015-06-24 S. D. Ryder , J. H. Knapen , M. Takamiya

Supernova remnants (SNRs) arise from the interaction between the ejecta of a supernova (SN) explosion and the surrounding circumstellar and interstellar medium. Some SNRs, mostly nearby SNRs, can be studied in great detail. However, to…

高能天体物理现象 · 物理学 2018-04-25 Knox S. Long

This review addresses what can be learned from infrared observations about galaxies powered predominantly by star formation. Infrared techniques mostly probe the interstellar medium of galaxies, yielding physical and chemical information on…

天体物理学 · 物理学 2007-05-23 George Helou

Spectroscopic redshifts have been measured for 9 K-band luminous galaxies at 1.7 < z < 2.3, selected with Ks < 20 in the "K20 survey" region of the Great Observatories Origins Deep Survey area. Star formation rates (SFRs) of ~100-500…

With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely to undergo a sudden enhancement before the…

天体物理学 · 物理学 2009-11-13 Scott C. Porter , Somak Raychaudhury , Kevin A. Pimbblet , Michael J. Drinkwater

IRAS 17256-3631 is a southern Galactic massive star forming region located at a distance of 2 kpc. In this paper, we present a multiwavelength investigation of the embedded cluster, the HII region, as well as the parent cloud. Radio images…

星系天体物理 · 物理学 2016-01-27 V. S. Veena , S. Vig , A. Tej , W. P. Varricatt , S. K. Ghosh , T. Chandrasekhar , N. M. Ashok

A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) to deduce details about star formation in nearby disk galaxies selected with no bias to optical surface brightness…

天体物理学 · 物理学 2009-11-11 J. F. Helmboldt , R. A. M. Walterbos , G. D. Bothun , K. O'Neil

Following on from IRAS, ISO has provided a huge advancement in our knowledge of the phenomenology of the infrared (IR) emission of normal galaxies and the underlying physical processes. Highlights include: the discovery of an extended cold…

天体物理学 · 物理学 2009-11-11 Marc Sauvage , Richard J. Tuffs , Cristina C. Popescu

A multi-wavelength set of photometric data including UV (GALEX), optical, near-IR, infrared (Spitzer) and radio (VLA 20cm) images and spectroscopic observations are used to map the dust-obscured and unobscured star formation in the galaxy…

天体物理学 · 物理学 2007-05-23 I. Damjanov , D. Fadda , F. Marleau , P. Appleton , P. Choi , M. Lacy , L. Storrie-Lombardi , L. Yan