Draft version September 5, 2005 A Preprint typ eset using L TEX style emulateap j v. 11/26/04 THE DEMOGRAPHICS OF LONG-PERIOD COMETS Paul J. Francis Research School of Astronomy and Astrophysics, the Australian National University, Mt STromlo Observatory, Cotter Road, Weston ACT 2611, Australia Draft version September 5, 2005 ABSTRACT The absolute magnitude and perihelion distributions of long-perio d comets are derived, using data from the Lincoln Near-Earth Asteroid Research (LINEAR) survey. ...
This is a new popup window - close it when you are done . Submitted by John Blomquist on 03/14/2013 13:51:45 . ... 2013 . Pan-STARRS is seen at about 7:57PM from Wal-Mart Mountain in Lunenburg. This photo was taken with a Canon 400mm DO lens at f5.6, mounted on a Canon T-3i camera body. A 3.2sec. exposure was used with the ISO set at 800. Some minor levels adjustment done in PhotoShop. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...
Rep ort by the ESA-ESO Working Group on Galactic p opulations, chemistry and dynamics Abstract Between the early 40s, when Baade showed the first evidence for the existence of two distinct stellar populations, and today, with our Galaxy surprising us with new substructures discovered almost on a monthly basis, it is clear that a remarkable progress has been achieved in our understanding of the Galaxy, of its structure and stellar populations, and of its chemical and dynamical signatures. Yet, some questions
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Ссылки http://www.stecf.org/coordination/esa_eso/galpops/report.pdf -- 2038.4 Кб -- 04.09.2008 Похожие документы
... EYEPIECE April 2013 Volume 61 Number 4 ISSN 0146-7662 Isaac Asimov Memorial "Debate About Nothing" By Richard Brounstein NASA ROVER FINDS CONDITIONS ONCE SUITED FOR ANCIENT LIFE ON MARS WASHINGTON - An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes. ... 11 EYEPIECE April 2013 FOCUS ON THE UNIVERSE Comet Chasing: Photographing PanSTARRS By Stan Honda wasn't expecting to dodge cow chips while photographing Comet PanSTARRS. ...
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Ссылки http://www.aaa.org/EyepieceFiles/aaa/2013_04_April_Eyepiece.pdf -- 2920.6 Кб -- 14.10.2015 Похожие документы