... Once a star loses its disk, it appears to be free to spin--up. ... By the time a star reaches the 1 day periods seen in some stars in Orion OB1a and b it must have lost their disk a relatively long time ago, and have spent only 5% of their post--birthline, PMS lifetime with a disk. ... These stars are roughly 10 Myr old. ... The most rapid rotation period among the Orion OB1a stars is about 0.7 days, which means that such a star would have lost its disk at an age of no older than 250,000 years. ...

Are local neutron stars the source of gamma ray bursts? ... Abstract We investigate models for the galactic neutron star origin for gamma ray bursts given the current parameters from the BATSE experiment. ... We also consider two-population models and find that we cannot reproduce any two population model consisting of a combination of halo and local bursts in which the local bursts originate from further than 1 kpc. ...

... Radio Astronomy . ... ASRAS Board Members . ... To see the most up to date news and events happening with ASRAS log in with your user name and password and then click on the Activities page. ... Messier Marathon (Member Observing) CANCELLED Saturday, April 9, 2016 9:00 PM Location:Farash Center Ionia NY . ... ASRAS Members meeting - Friday May 6 at Farash Center - Ionia NY . ... ASRAS Board members meeting - monday May 9 @ Farash Center Monday, May 9, 2016 7:00 PM Location:Farash Center Ionia NY . ...

Kholtygin A., Brown J., Fabrika S., Surkov A. Magnetic field connected fast line profile variability in spectra of bright O supergiants . ... Conference, held in the Special Astrophysical Observatory of the Russian AS, August 27-31, 2003, Eds.: Yu. ... Results of a study of fast line profile variability ( lpv ) in spectra of selected bright O-stars are reported. ... In the context of testing the MCWS model a program of searching for weak magnetic fields in bright O and early B stars is outlined. ...

... Bojan Nikolic web pages home . ... As an exercise to put through the new InMin library through its paces, I have looked recently at applying Nested Sampling ( Skilling2006 ) algorithm to the fitting of star-formation history as function of redshift. ... The data I used are from Figure 1 of Yuksel08 but I use only the grey data paints, which are just the data originally from Hopkins2006 . ... The next step is to define the function which is the model for the history of the SFR density. ...

Next: Special problems Up: Reducing the observations Previous: Table file output . ... Rejected stars: These are marked with an asterisk (*) in the right margin when the residuals are listed. ... Some plots have fitted lines indicated by a series of dashes. The residual plots identify different stars with different symbols; these are given in the tables of residuals. ... Here, large fluctuations in sky brightness can occur, occasionally producing negative star intensities after sky subtraction. ...

... В теме В разделе По форуму . ... Темы, интересные всем ? ... Научная панорама ? arxiv:0705.4195 VSOP: The Variable Star One-shot Project . предыдущая тема следующая тема . ... 0 Пользователей и 1 Гость просматривают эту тему. ... arxiv:0705.4195 VSOP: The Variable Star One-shot Project I. Описание проекта и первый релиз данных (VSOP: The Variable Star One-shot Project I. Project presentation and first data release) . ... VSOP - The Variable Star One-shot Project ( http://vsop.sc.eso.org/ ). ...

The small solids. Asteroids or the small planetes . ... The comets. ... Ceneca the Young.Procuring about the nature.63 y. The comet is a celestial body of a great size, but a rare one... transparent. Sometimes there seen a core and the medium forms a kind of a tail, beard or dishevelled looks. ... The core is an ice body - conglomeration of frosted gas and dust. ... The comet state is variable: ones have the con tails, others the dust tails, and the third have both. ... Meteors and meteorites. ...

... Development of Ideas of Structure and Evolution of Stars. Integral Features of Stars, Which Determine Their Structure, Direction and Rate of Evolutuion. ... Connection between Potential and Thermal Energy of Star. ... Structure of a Main Sequence Star. Features of Massive Stars Evolution on the Main Sequence. Internal Structure of the Sun. ... White Dwarfs, Their Features. ... Evolution from the Main Sequence of Massive Stars. ... Evolution of Small Mass Stars till White Dwarfs Sequence. ...

... Updates to HST Standard-Star Fluxes . ... These data are in an STScI data base named CRCALSPEC and have been divided into two categories to help the user understand the origin and accuracy of these flux distributions. ... 1990, ApJS, 73, 413) and Oke (1990, AJ, 99, 1621) spectra are available. Oke (1990) used the DoubleSpectrograph on the 5-m Hale Telescope to obtain these spectra for HST calibration; and these data are identified in the HST data bases by the keyword OBSMODE=OKE DBSP. ...

Iggy Pop The Passenger _Lust for Life_ I am a passenger And I ride and I ride I ride through the city's backside I see the stars come out of the sky Yeah, they're bright in a hollow sky You know it looks so good tonight I am a passenger I stay under glass I look through my window so bright I see the stars come out tonight I see the bright and hollow ...

... Subject: G.08 How are stars named? Can I name/buy one? ... The Supernova of 1987 (Supernova 1987A), one of the major astronomical events of this century, was identified with the star named SK -69 202 in the very specialized catalog, the _Deep Objective Prism Survey of the Large Magellanic Cloud_, published by the Warner and Swasey Observatory. These procedures and catalogs accepted by the International Astronomical Union are the only means by which stars receive long-lasting names. ...

... Hidden Hollow 2008 . ... North Star Concessions! ... The Hidden Hollow weekend Star Party at Warren Rupp Observatory will be back again this year the weekend of May 2nd - 4th! ... Be sure to stop by and browse their great selections. ... They supported Hidden Hollow for years and we welcome them! Also joining us this year is Camera Concepts & Telescope Solutions ( CCTS ). ... While you're enjoying the Hidden Hollow Star Party 2008, be sure to support our good friends at North Star Concessions . ...

Next: Discussion Up: Old neutron star distribution Previous: Galactic potential . It proves to be teachful to have a look at the calculated distribution (Fig. ... The galactic z -distribution of stars and peculiar velocities slightly smear out this narrow boundary. ... The final picture (Fig. ) of the old neutron star density distribution is obviously the sum of filled equipotential lobes with different weighted with the probability shown in the Fig. ...

Stellarium 0.12.3 . ... BigStarCatalogExtension::SpecialZoneArray< Star > Class Template Reference . ... SpecialZoneArray (QFile *file, bool byte_swap, bool use_mmap, int level , int mag_min , int mag_range , int mag_steps ) . ... ZoneArray (const QString & fname , QFile *file, int level , int mag_min , int mag_range , int mag_steps ) . ... BigStarCatalogExtension::SpecialZoneArray < Star >:: SpecialZoneArray . ... SpecialZoneData <Star>* BigStarCatalogExtension::SpecialZoneArray < Star >::getZones . ...

В г.Одессе с 16 по 21 августа прошла вторая по счету и обещающая стать традиционной международная конференция "Вселенная Гамова: оригинальные идеи в астрофизике и космологии"(GMIC-99) . ... На хорошей полиграфической основе издательской фирмой "Астропринт" вовремя были подготовлены тезисы всех докладов, включая постерные и текст научной программы. Особенно приятно отметить,что в конференции участвовало много молодых ученых. ... Срок предоставления материалов для печати 31 октября 1999 года. ...

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

... A star party is a gathering of amateur astronomers who set up their telescopes and observe the dynamic night sky. ... Star parties are best scheduled during first quarter and waxing gibbous Moon. During full moon, the moon is so bright it obscures a view of other celestial objects and even the Moon is best viewed when NOT full. ... We will consult local weather forecasters and make a decision by 2:00p on the day of the star party. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Download Izmccd (~2.7 MB). ... a) a choice of the best mode of measurements of stars and objects ("Properties/Measurement"), . b) a choice of reference stars. ... 1) necessity of presence on an image of a plenty of stars (we recommend to apply this mode, if on the frame of reference stars is more 100) . ... Sx and Sy depend from residuals at all reference stars (reference stars are marked by blue color). ... These residuals are the image of the star a minus function of a profile for each pixel. ...

An article on the base of oral presentation “Design and Implementation of the Teen-Age Message” at the 1 st International Workshop “THE ART AND SCIENCE OF INTERSTELLAR MESSAGE COMPOSITION”, March 18, 2002, Paris , France , http://publish.seti.org/art_science . ... A radio signal with constant frequency and so, with zero initial information content, uses the "language of nature" to report to Them some useful astrophysical data about the interstellar medium. ... Continuous Function . ...