... October 2, 1999 . Phi Persei: Double Star . ... Based on recent results , this artist's vision of the double star Phi Persei , 720 light years away, shows a bright, rapidly rotating massive star surrounded by a disk of gas. A small companion star orbits 100 million miles away. ... Ten million years ago the small companion was actually the most massive star in the system and because of its greater mass evolved into a giant star more quickly. ... About APOD > . ...

... 2012 October 27 . A Halo for NGC 6164 . ... Explanation: Beautiful emission nebula NGC 6164 was created by a rare, hot, luminous O-type star, some 40 times as massive as the Sun. ... That makes it similar in appearance to more familiar planetary nebulae - the gaseous shrouds surrounding dying sun-like stars. Also like many planetary nebulae, NGC 6164 has been found to have an extensive, faint halo , revealed in this deep telescopic image of the region. ... About APOD | ...

... Based on recent results , this artist's vision of the double star Phi Persei , 720 light years away, shows a bright, rapidly rotating massive star surrounded by a disk of gas. A small companion star orbits 100 million miles away. ... Astronomers consider the ultimate fate of such mass-exchanging, interacting binary systems an open question and a challenge for present theories of stellar evolution . ... Publications with keywords: stellar evolution - binary star . ...

... Sunday , October 6, 2013 Standard quasar-like AGN Standard AGN have: · · · · · Luminous accretion disk (with X-ray corona) Bright line emission (ionised by disk) Dusty obscuring torus (emits in IR/sub-mm) Orientation-dependent observed properties Sometimes, extended radio jets Sunday , October 6, 2013 Another class of AGN Other AGN , exemplified by weak radio ... Sunday, October 6, 2013 Summary · · · · · · Not all AGN follow the "standard" accretion disk picture. ...

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

... HST has resumed astrometric observations using the Fine Guidance Sensors. ... Filling the Period Gap for Massive Binaries . ... Artist's impression of the O star binary LH54-425, an LMC system . ... The FGS is a white-light interferometer, which is not only capable of achieving sub-milliarcsecond accuracy astrometry, but also allows the binary detection via fringe analysis. ... Observations of more than 40 OB stars are scheduled for the coming week. ... Past weeks: . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Posted on December 10, 2012 | No Comments Music can be a great way to relax and unwind. Many people play an instrument, are part of a band or enjoying listening to their favourite song on the radio [ ] . Continue Reading.. Posted on November 29, 2012 | ... Posted on September 20, 2012 | ... Posted on August 29, 2012 | ... Posted on July 3, 2012 | ... Posted on April 19, 2012 | ... Posted on January 19, 2012 | ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2011 > Very Low Mass Stars and Brown Dwarfs . ... Observing Facilities . ... Observing with ESO Telescopes . ... ESO Data . ... This workshop will review the current progress in our understanding of low mass star and brown dwarf formation in nearby molecular clouds, and will bring together observers and theoreticians to promote an energizing discussion. ... Surveys for young very low mass stars and brown dwarfs . ...

Armagh Observatory . ... Armagh, BT61 9DG . ... The closing date for receipt of applications: 31/05/2008 . ... Applications are invited for a fixed-term postdoctoral research position for up to 3 years to be held at Armagh Observatory beginning October 2008 or as soon as possible thereafter. ... Further information about Armagh Observatory and the current massive stars research programme may be obtained by consulting the Observatory's web-site or via email to Jorick Vink (jsv arm.ac.uk). ...

... If the mass of the collapsing star is more than three solar masses, however, no force can prevent it from collapsing completely to become a black hole. What is a black hole? Mini black holes . ... For Further Reading About Black Holes A black hole is a region of space in which the pull of gravity is so strong that nothing can escape. ... A black hole with a mass less than three solar masses would not form on its own; its gravity is too weak to cause it to completely collapse in on itself. ...