... Chandra Survey . ... Fields Observed . ... Data Archive . X-ray Database . ... Bulge Windows Survey . ... The ChaMPlane survey is being conducted at the Harvard-Smithsonian Center for Astrophysics. 20 ksec) galactic plane fields (|b| ~ Grindlay et al. (2005) for general description). ... The ChaMPlane project is currently supported by NASA (Chandra Archive), NOAO, and NSF. ... Chandra ACIS chip boundaries (green lines) and X-ray source positions (red circles) are superimposed on the image. ...

... Use of This Manual . ... Spectral-Line Observing at Arecibo (3.25 Mbyte) + Spectral line Appendices (0.56 Mbyte) ( HTML page ) . ... Data Analysis . ... Continuum Observing at Arecibo (0.36 Mbyte) + Continuum Appendices (0.31 Mbyte) . ... Pulsar Observations at Arecibo (4.03 Mbyte) + Pulsar Appendices (0.70 Mbyte) ( HTML page ) . ... VLBI Observing at Arecibo (0.36 Mbyte) + VLBI Appendices (0.35 Mbyte) . ... Introduction to Computing at Arecibo (0.33 Mbyte) + Computing Appendices (0.32 Mbyte) . ...

Compilation of rotation of the galaxies from gas . HyperLeda home | Documentation | ... Search an object in the gas rotation catalogue . Rotation of the galaxy from gas. ... Twice the rotation velocity of the gas (logarithm of km/s) with uncertainty and quality flag in parentheses . This quantity is the logarithm of a radio line width. ... The definitions are given in the "telescopes_codes" table: . ... 20% of the maximum . ... 20% of the mean flux . ... mean of code 1 and 8 . ...

... Observing . ... Subscriber Extras . ... Web Extras . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Observing springtime deep-sky objects with a large telescope . ... Web Extra: Astronomers animate one of the largest galaxy clusters ever observed . ... At the center of the Phoenix Cluster, a large elliptical galaxy lurks where the hot gas is ejected, giving off unprecedented levels of X-rays, which have been observed by the orbiting Chandra X-ray telescope. ...

... orbitdump [tstep=<value>] [offsett=true|false] >orbit.dat . ... The tasks dumps the contents of the orbit file in the current ODF (pointed at via environment variable SAS_ODF ) to stdout in the format t x y z d vx vy vz vabs where t time in Mission-Elapsed-Time [s] . x, y, z components of S/C position vector in Earth-centeredJ2000 reference frame [km] . d norm of vector (x, y, z) [km] . vx, vy, vz components of S/C velocity vector in Earth-centeredJ2000 reference frame [km/s] . ...

... The Lin-Shu Theory | ... As we have seen here, understanding the spiral structure of galaxies took many twists and turns even in the hands of Bertil Lindblad who seems rightly regarded the main father of this whole subject. By the early 1960s, with the arrival of computers, plasma physics and several fresh investigators, it entered a new period of unusually vigorous activity, not always very united or monothematic, but broadly grouped under the umbrella marked `density-wave theory'. ...

NAUTICAL ASTRONOMICAL YEARBOOK (in Russian) . The "Nautical Astronomical Yearbook" (NAY) had been published since 1930 by the Russian Academy of Sciences. The main content of the Yearbook is the daily tables containing data for the calculation of the local hourly angles and the declinations of the Sun, Moon, Venus, Mars, Jupiter, Saturn, and also 160 stars at any time moment. ... The ephemerides have the accuracy 0.1'. ... Ph.D. M.V. Lukashova (editor-in-chief), . Ph.D. N.I. Glebova , . ...

... О Далекой Галактике . ... Теперь в Далекой Галактике вы всегда можете увидеть свежие фотографии Солнца. ... Форум . Форум "Далекой Галактики" - прекрасное место для общения всех астрономов. ... Новости из космоса . ... Подписаться на новости Далекой Галактики Вы можете здесь: . ... Новости из Далекой Галактики - популярно об Астрономии . ... Если вы хотите выразить свое мнение о сайте "Далекая Галактика", или просто почитать мнения других посетителей - пожалуйста, заходите в Гостевую книгу . ...

... We suggest simple method of the selection of distant galaxies based on their radio properties. ... RC0015+0503a , RC0015+0503b , RC0015+0501 , RC0034+0513 , RC0038+0449 , RC0042+0504 . ... RC0105+0501 , RC0110+0500 , RC0117+0503 , RC0126+0502 , RC0133+0459 , RC0135+0450 , RC0137+0539 , RC0143+0505 , RC0152+0453 , RC0154+0459 , RC0159+0448 . ... RC0209+0501b , RC0213+0516 , RC0226+0512 , RC0250+0512 . ... RC0302+0456 , RC0308+0454 , RC0311+0507 , RC0318+0456 , RC0355+0449 . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 5, 1996 . Watch Galaxies Form . ... Although peculiar by present standards of galaxies , these blobs may have been normal in the distant past, many billions of years ago. This adds evidence that galaxies formed from the conglomeration of smaller objects instead of the fragmentation of larger objects . ... About APOD | ...

The points are analogous to ones for the 4 th , 5 th , 6 th , 7 th , 8 th and 9 th Asian-Pacific Astronomy Olympiads . Details are published in the 2 nd announcement . National Astronomy Olympic Committees and interested organizations are welcome to ask more about the 10 th APAO and in 2014 may form the teams for the 19 th IAO as well as for the 10 th APAO. ... Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the Asian-Pacific Astronomy Olympiad (APAO) . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... By admin August 17, 2015 Posted in: Armagh Planetarium . ... If you are not a regular pinner, Pinterest is a website where users can share images and media. Inside of just liking and sharing content, users can pin media onto different pin boards, arranged perhaps by theme or content. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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... List of courses | LIST and CONTENTS of COURSES . ... Introduction . ... Application: . ... Alumni: . List of Alumni . ... Alumni reports . ... At least one semester of Advanced Calculus and one semester of Linear Algebra are necessary prerequisites to all our courses, including Elementary ones. For additional prerequisites to Intermediate and Advances courses please consult the course description. ... Non-Euclidean geometry . ... Ergodic Theory of Dynamical Systems . ... Advanced courses . ...

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