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Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... Observatory . ... Science . ... Science Users Information > Science Publications > Science Announcements > Restricted Services from 21 December to 01 January . ... Science Users Information . Observing Facilities . ... Instrumentation Development . Future Facilities and Development . ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ...

. ATCA / VLA Followup . (restricted) . Optical Followup . (restricted) . Parkes Schedule . OBSERVING DOCUMENTATION .

In the STIS instrument, imaging mirrors and gratings are contained in the mode select mechanism (MSM) while filters and slits are in the aperture wheel. ... If no central wavelength is specified, e.g., " stis,ccd,g430m,52X0.2 ", results for the entire bandpass of the instrument will be calculated, while if a central wavelength is included, e.g., " stis,ccd,g430m,52X0.2,c4451 ", the calculation will be restricted to the actual wavelength range covered by that wavelength setting. ...

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... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

... 2008 April 16 . A Protected Night Sky Over Flagstaff . ... Explanation: This sky is protected. Yesterday marked the 50 year anniversary of the first lighting ordinance ever enacted, which restricted searchlight advertisements from sweeping the night skies above Flagstaff , Arizona , USA . Flagstaff now enjoys the status of being the first International Dark Sky City , and maintains a lighting code that limits lights from polluting this majestic nighttime view . ... About APOD | ...

A team of U.S. and German astrophysicists have made the first ever detection of X-rays coming from a comet. ... Following the initial detection, the team reported repeated X-ray emissions from the comet over the next 24 hours. ... One preliminary theory is that X-ray emission from the Sun was absorbed by a cloud of gaseous water molecules surrounding the nucleus of the comet, and then were re-emitted by the molecules in a process physicists call "fluorescence." ... Comets . ...

... Images and Data from the Shared Skies Partnership . ... Open access to selected images and data . Restricted access to user data . Restricted access for schools . Restricted access for the astronomy lab . Other Data and Image Resources . Sky View (internet virtual telescope) . SIMBAD Astronomical Database . ... International Astronomical Union Circulars (restricted access) . Sloan Digital Sky Survey Release 8 . Multimission Archive at Space Telescope . ...

... 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. ...

Astronomy Picture of the Day . ... 28.02.1996 . ... Credit: J. Schoemer ( NASM ) Explanation: Tremendous explosions near the center of our Galaxy were discovered just this past December and are being announced today by a paper in Nature and a press conference at NASA . Bursts like these have never been seen before, and so the exact cause is unknown and will likely be the source of astronomical speculations and observations for years to come. ... Publications with keywords: Galactic Center . ...

Magneti c fiel d variation s o f th e whit e dwar f PG1658+44 1 V.G . ... Zeema n polarimetri c observation s o f th e magneti c whit e dwar f 16 PG1658+44 1 ar e presented . ... Geometrica l parameter s o f th e magneti c dipol e mode l ar e restricted . ... A possibilit y o f complet e determinatio n o f al l dipol e parameter s o n th e basi s o f observation s o f th e transvers e magneti c fiel d i n th e spectra l lin e o f -component s i s discussed . ...

... 0 ) = Z '' '' 0 [(1 \Gamma '')'' 1=2 sin 2 i sin 2!] ... We use the similarity theory to present the non--dimensional period T \ Lambda of the evolution of the parameters '' and i as a product of the independent factors: T \ Lambda = \ Gamma (4=15)(a \ Gamma3 =2 \ Lambda =LD )jL c (c 1 ; c 2 )j. Here LD = Ї k \ Lambda a \ Gamma3 k \ Lambda '' \ Gamma3 =2 k Ї \Gamma1=2 \ Lambda is the non-- dimensional parameter of disturbances similarity dependent on the dynamical characteristics of the ...

sas-admin -- Admin List XMM SAS developers [restricted membership] . ... The current archive is only available to the list members. ... To post a message to all the list members, send email to sas-admin@xmm.esac.esa.int . You can subscribe to the list, or change your existing subscription, in the sections below. ... To change your subscription (set options like digest and delivery modes, get a reminder of your password, or unsubscribe from sas-admin), enter your subscription email address: . ...

... Optical observations of pulsars have been restricted to a small handful of objects which are probably not representative of the pulsar population. The main problem is that pulsars are optically faint with short radiative lives. The talk will review current Irish research in pulsars. ... The talk will conclude with a discussion of the implications for pulsar astronomy with the proposed ESO/EU 42 m optical telescope due to be commissioned 2017. ... Last Revised: 2007 January 31st . ...

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

... Luminous blue variable (LBV) stars are the most massive stars with 40-120 solar masses, which are passing the short stage of evolution losing their hydrogen envelopes before exploding as Supernovae. These are extremely rare objects, only about a dozen of the most massive LBVs are known in the Galaxy. ... In the spectral observations of stars with infrared circular nebulae, found in the Spitzer survey (24 microns), a new LBV star in the Galaxy was discovered. It was named MN112. ...

Появление жизни основанной на аминооксидах и РНК/ДНК на планетах земного типа требует довольно узкого диапазона физических параметров. Наиболее важные из параметров это масса планеты и температурные условия. Кроме того, только звезды спектральных классов от F до K могут иметь планеты пригодные для жизни. ... умеренную гравитацию; . ... умеренный период вращения; . умеренный экцентриситет орбиты; . умеренный наклон экваториальной плоскости к плоскости орбиты; . ...

... English astronomer and mathematician. ... American astronomer. ... Bond, William Cranch 1789-1859 . ... At the observatory, he studied Saturn and (with William Lassell ) discovered its moon Hyperion . ... Polish astronomer who advanced the heliocentric theory that the earth and other planets revolve around the Sun. ... Galileo Galilei 1564-1642 . ... Van Allen discovered the Earth's radiation belts, which now bear his name, with an instrument aboard the first successful American satellite, Explorer...