We present new images (ground-based optical and mid-infrared [MIR] from the Spitzer Space Telescope) and spectra (from Spitzer) of the archetypal starburst galaxy M82. The Spitzer data show that the MIR emission extends at least 6 kpc along the minor axis of the galaxy. ... The colors of the MIR emission and the spectra indicate that there is a strong component of aromatic feature emission (the MIR features commonly attributed to polycyclic aromatic hydrocarbons). ... ADS Citation Query . ...

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... ESO Supernova . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Future Projects . ... This NASA/ESA Hubble Space Telescope image shows the positions of the past, present and predicted future appearances of the Refsdal supernova behind the galaxy cluster€а MACS J1149+2223 . ...

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

Magnetic Stars, 2011, pp. ... The Ce III spectrum is clearly present in a Cen, making it a candidate for the hottest CP star with a lanthanide in its spectrum. Also present are Kr II, and interesting broad absorption features. ... Key words: Stars: chemically peculiar ­ stars: variable ­ stars: individual (a Cen) ­ line: identification 1 New Identifications in the a Cen Sp ectrum The helium variable a Cen is a bright and well­studied star. ... 2010). ...

... JavaScript version 1.3 provides the following new features and enhancements: . ... See the Client-Side JavaScript Guide for details. ... Changes to the Array object. ... The push method returns the new length of the array rather than the last element added to the array. ... Changes to the Date object. ... Added a day parameter to the setMonth method. ... Added the apply method, which allows you to apply a method of another object in the context of a different object (the calling object). ...

... The foot-point of the bright feature becomes weak. Magnetic fragment behaviour Note A bipolar region with very weak positive and Start of the data set. ... At the east, a stronger bipolar region relate to many bipolar regions. presented and cancellation occurs. 01:34 The negative fragments in the "weak bipolar region" become bigger and stronger. 01:50 The foot-points of The positive fragments in the "weak bipolar the jet-like feature region" become stronger and bigger. ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

Since the light from galaxies represents the integrated contribution of its consitutient stars, then we can learn about stellar populations in galaxies by modelling their light by summing up individual stellar spectra for different kinds of stars. ... The data cover the wavelength range 3500 - 9000 angstroms. ... Retrieve Digital Stellar Spectra Click on the appropriate spectral type. ... Note that the designation V means main sequence, IV means subgiants, III means giants, I means supergiant. ...

Uranian Moons, Rings, And Clouds . ... Credit Copyright: E. Karkoschka ( Univ. of Arizona ), NASA Explanation: The giant planet Uranus is faint and featureless when viewed in visible light . But this pair of near-infrared mosaics from the Hubble Space Telescope's NICMOS camera reveals moons, rings, and clouds of this distant gas planet . ... Ring systems are a common to the solar system's giant planets. Here the main Uranian ring seems to vary in width and is clearly brightest near the top. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. August 11, 1998 . Sun Dance . ... Explanation: Hot gas dances across the surface of the Sun in this picture from the orbiting TRACE satellite . The temperature of the gas is color coded so that blue represents hundreds of thousands of Kelvin , while red represents extreme temperatures in the millions of Kelvin. ... About APOD > . ...

Intricately structured filaments of gas and dust compose the reflection nebula seen around the Pleiades star cluster. These multiwavelength images were presented to the American Astronomical Society meeting in San Antonio, TX on January 16, 1996. Click here for the press release text . ... The Schmidt data were processed further after this photo release; better versions are now available.] Get image: 512x512 (56k) / 1024x1024 (204k) . Pleiades Far-Infrared Heated Dust Emission . ...

The motion of energetic ions and electrons through space is strongly constrained by the local magnetic field. The basic mode is rotation around magnetic field lines, while at the same time sliding along those lines, giving the particles a spiral trajectory. On typical field lines, attached to the Earth at both ends, such motion would soon lead the particles into the atmosphere, where they would collide and lose their energy. ... In this way the Earth holds on to its radiation belts. ...

... The motion of energetic ions and electrons through space is strongly constrained by the local magnetic field. The basic mode is rotation around magnetic field lines, while at the same time sliding along those lines, giving the particles a spiral trajectory. On typical field lines, attached to the Earth at both ends, such motion would soon lead the particles into the atmosphere, where they would collide and lose their energy. ... In this way the Earth holds on to its radiation belts. ...

... Magnetic fields, subatomic particles, etc., traveling in different directions fill the universe. Do they deflect or otherwise affect one another? If so, isnт??t the information we get from them distorted? ... Neutrino astronomy, which is still in its infancy, is attractive because neutrinos interact so weakly with matter that few of these distorting effects occur. Get instant access to subscriber content on Astronomy.com! ...

... We have started a programme of observations of nearby starburst and AGN galaxies with MICHELLE, with the aim of investigating the spatial extent of "Unidentified Infrared Bands (UIB)" emission in these galaxies, and in particular relating these to multi-frequency matched resolution radio maps. ... The spatially integrated MICHELLE spectrum of NGC 7469 in the 8 - 11.5µm range shows an equivalent width of 11.3µm UIB feature which is much smaller then measured by ISO. ...

... This chapter describes the functions that allow a plug-in to display a message on the status line, get agent information, and check on the current version of the Plug-in API and Communicator. ... Displaying a Status Line Message . ... The Communicator and Plug-in API major version numbers represent code release numbers, and their minor version numbers represent point release numbers. ... Differing version numbers may mean that the current Plug-in API and Communicator versions are incompatible. ...

Subatomic resolution on Cu(014)-O . 3nm x 3nm STM image of the Cu(014)-O 0.5ML surface measured with MnNi tip. ... This result has been discussed in Phys. Rev. Letters, 98, 206101 (2007) (A.N.Chaika, V.N.Semenov, S.S.Nazin, S.I.Bozhko, S. Murphy, K. Radican, I.V.Shvets, "Atomic Row Doubling in the STM Images of Cu(014)-O Obtained with MnNi Tips"). Image courtesy of A.Chaika. The image was measured in constant current mode using RT STM GPI-300. Copyright ISSP RAS, LSSS, 2006-2007 . ...

... Duchamp | ... Top | Duchamp is a solution to this problem of three-dimensional source finding. ... A list of the detections and their properties, as well as the input parameters that were used. [text file] . ... It can be downloaded in source format, in a gzipped tar archive. ... Changes from the previous version can be seen here (this file is included in the tar archive), while the archive files and documentation from the previous release versions are here , if you are really interested. ...

HEXTE Phoswich Detector 6/19/2006 Calibration Workshop, Iceland 2006 1 HEXTE Features Aperture Modulator AGC Detector "Mu Metal" Housing 6/19/2006 Calibration Workshop, Iceland 2006 Particle Monitor 2 RXTE/HEXTE Design and Calibration · Calibration begins with instrument design. ... 6/19/2006 Calibration Workshop, Iceland 2006 7 HEXTE Calibration -- Energy Resolution All of the detectors could not be taken to the synchrotron beam for detailed calibration. ...

... Average depth of frozen rocks at the latitude of Isidis basin makes 300-350 m. We count up density of distribution of craters in diameter of 1 km and more, located at the bottom of Isidis basin, on the western slope with difference of heights of 4.5 km and on a plateau. ... On a slope the density of craters has made 2154 while on a plateau 2141 crater Craters with fluidized deposits at the bottom of the basin have made 34 %, on a slope of 21 %, and on a plateau of 60 %. ...