Hot stars of *spectral type O, B, and A. They were originally thought, wrongly, to be at an earlier stage of evolution that *late-type stars. ... Young massive O stars that show selectively enhanced emission lines of ionized helium (HeII) and nitrogen (NIII) in addition to a well-developed absorption spectum. ... The emission lines are thought to arise in an expanding stellar atmosphere moving at very high speeds of up to 3000 km/s so that the star is continuously and rapidly losing mass. ...

SAI, graduates year 1982. ... Note: when just a 7-digit phone number is shown, it refers to a phone located in Moscow (international access 007-495). "+" in front of a number means that you must dial an international access code first (or just press "+" on your mobile phone keypad). ... 939-1672(work); . ... Ataev Sasha . 1-(703)-536-8881(home) (USA); . ... Bychkov Sergey . ... 1-(410)-740-8205(home), +1-(301)-286-2150(work) (USA); . ... 1-(412)-767-0332(home), +1-(412)-608-9339(mobile) (USA); . ...

Astronomy Discussion Forums . Forums: . ... I Don't Think So . ... Post Message | ... how can things of ultimate reality be representable? If ultimate means "nothing missing", you must interact directly with it, surely? Where does that leave "representation", but as non-ultimate by definition?* ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Загрузить программу (~10 MB). ... Программа izmccd предназначена для высокоточной астрометрической обработки числовых изображений небесных объектов. Программа позволяет получать как измеренные, так и экваториальные координаты малых планет, комет, спутников больших планет, визуально-двойных звезд и других объектов, а также идентифицировать уже известные малые планеты и найти на числовых изображениях движущиеся объекты. ... Программа является бесплатной. ... Автоматическая обработка, один объект. ...

... Planets and Brown Dwarfs . ... Mission Definition . Ask anyone on the street to give an example of a planet, and they'll consider you a bit dim. ... Finally, if you ask "What is the exact scientific definition of 'planet'?", it turns out that nobody can answer it, because there really isn't one. ... The word itself means "wanderer" in Greek, and other cultures generally have words for "planet" with a similar meaning. So why isn't that good enough for us today? ...

... Chandra | ESO | ... Field selection . ... Color composite image of the Chandra Deep Field South of 940 ks (pixel size = 0.984 arcsec, smoothed with a s =1 arcsec Gaussian). ... The Chandra Deep Field South (CDF-S) is one of the deepest observations obtained with the X-ray Chandra satellite, which stared at the same path of the sky for 11 days. ... ESO press release on March 13 , 2001 . ... APOD : The Chandra Deep Field South has been the Astronomical Picture of the Day on March 28, 2001 . ...

... spectrum . ... nsource <n> : choice of source function (def: 3=Feautrier) . noptype <n> : choice of continuous opacity (def: 1=Kiel) . nhedat <nhedat> : choice of HeI data (BCS or Mon treal) (def: 1=BCS) . ... read_model <filename>: read model atmosphere in QUB/STERNE2 format . ... wavmax <w_max> : distance from line centre to compute . ... nvturb <n vt > : number of points in -dependent v turb . ... tau_exp <n> : increase resolution of optical depth scale by adding additional points . ...

Next: Sky background definition Up: Background Definition Previous: Smoothing spline interpolation . The command BACKGROUND/SMOOTH enables to define the background without previous order definition. This feature is useful for example to correct for the background the image required for the order definition. ... All above methods are implemented in command BACKGROUND/ECHELLE and selected by the echelle keyword BKGMTD . ...

... title='Villeroy & Boch Artesano Original Молочник 0,15 л - Villeroy & Boch - Villeroy & Boch' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . title=' Японские наручные мужские часы Casio GMA-S110GD-2A. Коллекция G-Shock - Casio' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Кварцевые часы. 12/24 часовой формат времени. ... Коллекция: Осень-зима 2015/2016 . ... Пол: Мужской . Ботинки Norway Originals. ...

previous next contents elements attributes index . ... Document conventions . ... Sections 2 and 3: Introduction to HTML 4.0 . ... The brief SGML tutorial gives readers some understanding of HTML's relationship to SGML and gives summary information on how to read the HTML Document Type Definition (DTD). ... Each attribute definition specifies the type of its value. ... Title to copyright in this document will at all times remain with copyright holders. previous next contents elements attributes index ...

... Next: An IRAF-Independent Interface Up: Software Systems Previous: A New PROS . ... We present a high-level representation of the packages and tasks within IRAF/PROS. ... We have produced a high-level overview of PROS. ... The incremental stages were the short-term goals: a project overview diagram (i.e., an organizational diagram of software modules); high-level diagram (i.e., a bubble diagram of each module in the system); and unifying element tables (i.e., tables of task vs. software attributes)....