... High-resolution Herschel spectroscopy reveals the proto-planetary disk around the young star T Tau N . ... A study led by Linda Podio ( AstroFIt fellow at the Arcetri Observatory) with Inga Kamp (Kapteyn Institute, the Netherlands), Claudio Codella (Observatory of Arcetri) and other collaborators from Grenoble, UK and USA, makes use of high-resolution spectroscopic observations with HIFI on board the Herschel space observatory to characterize the disk around the young star T Tau N . ...

... For SIMS (Secondary Ion Mass Spectrometry) analysis, a solid surface is bombarded by primary ions of some keV energy. ... The subsequent mass analysis of the emitted ions provides detailed information on the elemental and molecular composition of the surface. ... Extremely short ion pulses with a duration below . ... By rastering a fine-focussed ion beam over the surface, like an electron beam in an electron microprobe, mass resolved secondary ion images (chemical maps) can be obtained...

Proposal Identi cation No.: ... Although there is no question that the CO(1-0) transition at 115 GHz is an e ective tracer of translucent and dense molecular gas, there are some problems when this transition is used in regions where signi cant di use molecular gas may be present. In these regions, the CH hyper ne, main-line, ground state transition at 3335 MHz may be a more e ective tracer of low-density molecular gas in clouds with visual extinction less than 1 magnitude. ...

... The Interactive Spectral Interpretation System (ISIS) is designed to facilitate the interpretation and analysis of high resolution X-ray spectra like those obtained using the grating spectrographs on Chandra and XMM and the microcalorimeter on Astro-E. It is being developed as an interactive tool for studying the physics of X-ray spectrum formation, supporting measurement and identification of spectral features, and interaction with a database of atomic structure parameters and plasma emission...

On 19/20 October 1995 we used GRIM II to attempt spectroscopy of the 2.3 micron CO absorption band in stellar clusters. ... Read Noise Our typical backgrounds in 60s were about 100 DN (about 500 e), and so for faint objects our noise is utterly dominated by the read noise of about 110 e. We can think of three ways to improve this situation: integrate longer; reduce the read noise; or implement multiple reads. ... Flats The quartz lamps were too dim for flats. ...

Next: The Joint Approach Up: Primary Beams and Mosaicing Previous: Visibility Processing . ... In this case, all pointings are handled simultaneously by the imaging and deconvolution software. With the individual approach, a mosaic experiment is treated like a large number of conventional observations, where each pointing is imaged and deconvolved separately. ... Next: The Joint Approach Up: Primary Beams and Mosaicing Previous: Visibility Processing Miriad manager . ...

High-resolution mid-infrared spectra are presented for 155 nuclear and extranuclear regions from the Spitzer Infrared Nearby Galaxies Survey (SINGS). ... Conversely, the radiation hardness for galaxy nuclei powered by accretion around a massive black hole is independent of metal abundance. ... However, similar to [Ne III] 15.56 ЮМm/[Ne II] 12.81 ЮМm, these mid-infrared line ratios lose their AGN/star-formation diagnostic powers for very low metallicity star-forming systems with hard radiation fields. ...

Next: Public Understanding of Science, Up: Technical Research Summaries Previous: New Approaches to Risk . ... Michael Smith has been analysing new infrared data collected from 11 PPN and PN by Chris Davis (Joint Astronomy Centre, Hawaii) to search for clues as to how the objects evolve. ... Georgi Pavlovski studied the properties of supersonic turbulence in molecular clouds and its effect on the molecular cloud properties and their chemical evolution. ...

... Searches for Star Formation in Damped Systems . ... The objective was to measure the star-formation rates in these systems. However, no H emission was detected above our limits of Wm -2 , corresponding to star formation rates ( q 0 =0.5). ... For q 0 =0.5 our limits are in conflict with the star formation rates predicted under the assumption that the high- z DLAs are the fully-formed galactic-disk counterparts of today's massive spiral galaxies. ...

... Vinay Kashyap and Jeremy Drake . ... We describe a Markov-Chain Monte-Carlo process using a Metropolis algorithm to derive Differential Emission Measures (DEMs) and element abundances from EUV line fluxes. ... These 8 files all use the Ov applet. f1QFlRay.htm - Active Region Emission Measures, Feldman et al. abundances, Raymond ion balances . ... 154, The Tenth Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun , eds. R.A. Donahue & J.A. Bookbinder (San Francisco: ASP), 844 . ...

Next: Emission-line galaxies Up: The Hamburg/SAO Survey for Previous: Data reduction . In total 217 candidates were observed during the January - June, 1995, of which 34 objects were observed with the 6m telescope, 183 objects with the Calar Alto 2.2m telescope, and 4 with both instruments. ... For 11 of the known ELGs we measure emission line ratios and make quantitative classification. ... Emission-line galaxies . ... Objects without emission lines . Absorption-line galaxies . ...

... The optical spectrum of the infrared source IRAS04296+3429 (optical counterpart - G0Ia star, V=14.2) was obtained with the echelle spectrometer PFES at the prime focus of the 6m telescope. ... 1995, Szczerba et al. 1996), our detailed modelling of its spectral energy distribution suggested that this source also should show the 30 m band. ... Stars: abundances - Stars: atmospheres - Stars: AGB and post-AGB - Stars: individual: IRAS04296+3429 . ... Spectral energy distribution . ...

... Credit Copyright: ISS Expedition 28 Crew , NASA Explanation: For the last time, the US Space Shuttle has approached the International Space Station (ISS). ... Although NASA is discontinuing the aging shuttle fleet, NASA astronauts in the near future will be able to visit the ISS on Russian space flights. ... Publications with keywords: space shuttle Atlantis - international space station - ISS . Publications with words: space shuttle Atlantis - international space station - ISS . ...

... 2009 February 2 . Comet Lulin Approaches . ... Explanation: How bright will Comet Lulin become? ... As Comet Lulin moves into the northern sky in mid February to rise around midnight, it should at least be spotted by comet watchers with binoculars and a good sky chart . Tracking observations indicate that the comet officially designated C/2007 N3 (Lulin) has now swung by the Sun and is approaching Earth on a trajectory that will bring it within half the Earth-Sun distance in late February. ...

Since 1991 I have mainly worked on Nearby Supernovae, carrying out optical spectroscopy and photometry. ... Supernovae . ... A list of all my publications can be found here , while refereed papers can be seen here . ... A review on The Age of Wonder (published on Science, People and Politics) . ... In this way, we know how to react to the inevitable discrepancies that are found when we compare the results of our calculations with measurements of the real things. ... Back To Nando Patat Home Page ...

... Bojan Nikolic web pages (r. 329) . Understanding Infrared emission from galaxies . Although the package <a href=?dustmodel.html?>dust</a> is primarily aimed at modelling emission from interstellar dust at mid/far IR wavelengths it has the facilities to compute both Mie <em>scattering</em> and <em>absorption</em>. ... This is a python script which calls the pydust library to compute the Mie absorption and scattering efficiencies: . ... Mie Extinction . Computing Mie Scattering . ...

... Talks . Integral field spectroscopy of AGN host galaxies . Talk at the Research School of Astronomy and Astrophysics, The Australian National University, October 17th, 2011, in Canberra, Australia . ... Talk at the Centre for Astrophysics Supercomputing, Swinburne University of Technology, February 25th, 2010, in Melbourne, Australia . ... Talk at the Research School of Astronomy and Astrophysics of the Australian National University, May 28th, 2009, in Canberra, Australia . ...

... Wiebe D.S., Shematovich V.I., and Shustov B.M.        Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract ). ... Shematovich V.I., Wiebe D.S., and Shustov B.M.      Chemical and dynamical evolution of protostellar clouds: chemistry at early stages of collapse ( abstract ). ... Li, Z.-Y., Shematovich, V. I. , Wiebe , D. S., and Shustov , B. M.      A Coupled Dynamical and Chemical Model of Starless Cores of Magnetized Molecular Clouds. ...

... Информация Руководство и преподаватели Еремин Роман Александрович . ... Публикации . ... Eremin R.A. , Kholmurodov Kh.T., Petrenko V.I. и др. ... Eremin R.A. , Kholmurodov Kh.T., Petrenko V.I., Avdeev M.V. Chapter 3. ... Eremin R.A. , Kholmurodov Kh.T., Petrenko V.I., Avdeev M.V. Solute-solvent interaction in nonpolar solutions of oleic acid as revealed by molecular dynamics simulation // Journal of Surface Investigation. ... Еремин Р.А. , Холмуродов Х.Т., Петренко В.И. и др. ...

Lectures . ... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬThe Mystery of Beta Lyrae: Astronomical Spectroscopy for AmateursтАЭ ? Fred Chromey . ... Lecture Series 2011-2012 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...