... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Dust in the Crab Nebula Supernova Remnant . ... Data Handling and Products . ... Science Data Products Forum . ... The Crab Nebula supernova remnant, NGC 1952, is the remains of a massive star that underwent a supernova explosion in AD 1054 (see the HST image ). ... A thesis topic to study in detail the properties of the dust features in the Crab Nebula is outlined. ...

... Dust in the region is studied photometrically at ultraviolet, optical, and far-infrared wavelengths to analyze nebular colors, grain properties, and scattering geometry. Constraints on this geometry are provided by spectroscopy of radio emission lines and optical absorption lines of the interstellar gas, which also reveal a significant amount of fine-scale filamentary structure. ... Return to Thesis Page ...

An unusual pulsar wind nebula associated with PSR B0906-49 . B. M. Gaensler (Astrophysics Dept, University of Sydney, Australia), . ... Other properties of the system such as the PWN's low luminosity and apparent steep spectrum, and the pulsar's large characteristic age, lead us to suggest that this nebula is substantially different from other radio PWNe, and may represent a transition between young pulsars with prominent radio PWNe and older pulsars for which no radio PWN has been detected. ...

... 22.09.1999 . ... Credit Copyright: Subaru 8.3-m Telescope , NAOJ Explanation: What's happened to the Ring Nebula? ... The Ring Nebula , also known as M 57, is an elongated planetary nebula , a type of nebula that is created when a Sun-like star evolves to throw off its outer atmosphere and becomes a white dwarf . ... Publications with keywords: planetary nebula - Ring Nebula . Publications with words: planetary nebula - Ring Nebula . ... NGC 7293: The Helix Nebula . ... M57: The Ring Nebula . ...

This report describes the procedures for processing a Target of Opportunity activation request. ... Insuring that the submitted Phase II abstract includes the desired turn-around time ( See Visits Requiring Rapid Processing ), triggering event, and probability of occurrence. ... Providing to the Principal Investigator (PI) a list of people to contact when a visit is activated (See UIR: "Activating Your Target of Opportunity Proposal" ). ... Director's Office (Macchetto) . ...

... We present near infrared broad band (J,H and K) and narrow band (H2 S(1)1-0 and Brackett gamma) images, and high resolution molecular observations (C{34}S(2-1), (3-2), (5-4) and {13}CO(2-1)) around the highly variable H2O maser located between the S235 A and B optical nebulosities. These observations are part of an on-going search for the sources of excitation of H2O masers in regions of star formation or, alternatively, for the earlieast evolutionary phases of massive stars. ...

... September 22, 1999 . Halos Around the Ring Nebula . Credit: Subaru 8.3-m Telescope , NAOJ . Explanation: What's happened to the Ring Nebula? ... The above recently-released, false-color image taken by the giant Subaru Telescope shows details of giant halos of diffuse gas that are seen to envelop the entire structure. ... The origin and future evolution of the Ring Nebula 's outer halos is still being investigated. ... About APOD > . ...

... 321, P L39-L42 (1997). Abstract . ... 321, P L43-L45 (1997). ... 321, P 691-695 (1997). ... 321, P 696-702 (1997). ... 321, P 703-712 (1997). ... 321, P 713-723 (1997). ... 321, P 724-732 (1997). ... 321, P 733-748 (1997). ... 321, P 749-753 (1997). ... 321, P 754-764 (1997). ... The neutral gas content of X-ray bright elliptical galaxies . ... 321, P 765-770 (1997). ... 321, P 771-775 (1997). ... 321, P 776-790 (1997). ... 321, P 791-802 (1997). ... helpdesk@link.springer.de . ...

... Authors: Spyros Basilakos (Imperial College London) . ... Title: Populating a cluster of galaxies - I. Results at z=0 . ... Title: The Merger Rate to Redshift One from Kinematic Pairs: Caltech Faint Galaxy Redshift Survey XI . ... Title: Multi-wavelength observations of an evolved galaxy group: An endpoint of galaxy merging? ... 23 matches for the search pattern galaxy merging . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+merging/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Most of the Abstracts and Full Papers that appear here are in Postscript Format . To view them, you must have access to Ghostview , or another suitable viewer. ... A 313, 664 (1996) . ... Full Paper . 241 Modelling of Circumstellar Environments around Carbon and Oxygen Rich Stars . ... View Abstract . ... P.J. Amado and P.B. Byrne . ... 196 A Provisional Long Mean Air Temperature Series for Armagh Observatory . ...

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

... Schaaff, A. 2003, in ASP Conf. ... Started at CDS in 2002, the work around Web Services is in a full exploitation phase. ... A portal is available to publish all information about how to use CDS XML Webservices and also hints on how to start to use XML Web Services (tutorial, links, etc.) ... Figure: The CDS Web Service Portal at http://cdsweb.u-strasbg.fr/cdsws.gml . ... Note that it is not necessary to deal with the contents of a SOAP file to have client access to the CDS XML Web Services. ...

... 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 . ...

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Astronomical Society . ... ASP Staff . ... ASP Annual Meeting . ... The ASP is now accepting abstract proposals for its 2013 Annual Meeting, ?Ensuring STEM Literacy.? ... The Astronomical Society of the Pacific Invites Nominations for the OrganizationтАЩs 2016 Annual Awards . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ...

Giant planets and brown dwarfs around A-F type stars: a Harps survey Simon Borgniet, Anne-Marie Lagrange, Franck Galland, NadХge Meunier Institut de PlanИtologie et d'Astrophysique de Grenoble (France) Email : Simon.Borgniet@obs.ujf-grenoble.fr Abstract: Since 1995, the radial velocity technique has allowed to detect nearly 600 planets and has widely contributed to the dramatical improvement of our knowledge of exoplanets. ... Data Reduction : Early-type stars : few spectral lines, rotation-broadened. ...

20-23 September 2016, St.Petersburg, Russia . ... Abstracts . Registration . ... Participants who wish to present a contribution to the conference are invited to submit title, abstract, and type of presentation (poster or 15 min talk including questions) along with the registration form. The deadline for the Abstracts and Early Registration is 30th June 2016 . ... Name and affiliation . Title: . ... Presentation . ... Yes No . ... Oral Poster . Presentation Title: . ... Poster Title: . ...

... Study of Mg-Fe-silicate glasses of variable composition. ... With the new data, the astrophysical discussion started in Paper I was continued and focussed on the comparison of the olivine glass data with IRAS LRS spectra of O-rich circumstellar envelopes around Mira stars. ... The new olivine glasses point to the interesting consequence that the temperature for silicate dust grains at the inner edge of circumstellar envelopes must be considerably higher than the values often given in the literature....

... David P. Stern Laboratory for Extraterrestrial Physics NASA . ... Alfv?n's Theory and Electric Fields . ... The debate between proponents of a static corona, Parker's solar wind theory, and an alternative "solar breeze" theory of Chamberlai n [1960, 1961; Dessler 1967] was only settled by observations from space. ... Rapidly spreading plasma clouds produced by solar flares, like those envisioned by Chapman and Ferraro, are sometimes superposed on the solar wind flow. ...

... David P. Stern Laboratory for Extraterrestrial Physics NASA . ... Alfv?n's Theory and Electric Fields . ... The debate between proponents of a static corona, Parker's solar wind theory, and an alternative "solar breeze" theory of Chamberlai n [1960, 1961; Dessler 1967] was only settled by observations from space. ... Rapidly spreading plasma clouds produced by solar flares, like those envisioned by Chapman and Ferraro, are sometimes superposed on the solar wind flow. ...