... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... AT Deep Fields Home б б б |б б б  ATHDFS Home б б б |б б б  Project Details б б б |б б б  Data б б б |б б б  Catalogues б б б |б б б  Publications б б б |б б б  ATHDFS Team Pages (password required) б б  . ... Column (1) --- Source ID number Column (2) --- Source name. ...

... Home Education Classes AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . ... Classes . AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ April 2016 . ... Dec. ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ...

... Be/X-Ray Binaries and candidates in the Galaxy Up: Be/X-ray binaries and candidates Previous: Introduction . ... We separate galactic sources, systems in Large Magellanic Cloud (LMC) and in the Small Magellanic Cloud (SMC). ... In the first column we give sources names. ... Some comments and more detailed description of each object can be found in subsections "Comments to the tables" below (each subsection refers to galactic, LMC or SMC sources). ... Be/X-Ray Binaries and candidates in the SMC . ...

... 173Wall Peacock We catalogue the brightest extragalactic radio sources at 2.7 GHz. ... These data were originally presented in Wall and Peacock, MNRAS, 216, 173. The values in parenthesis include (units, datatype, example). 1 iauname Name of source in IAU convention (char7, example: '0320-37') . ... 3 ra_1950 rad Right ascension of source in radians (B1950) (real, example: 0.876068) . ... 9 alpha Spectral index of source between 2.7 and 5 GHz (real, example: 0.52) . ... Longair, 1975 . ...

... Bojan Nikolic web pages (r. 329) . Galaxy Evolution . ... By comparing narrow band spectral line indices with recent models of simple stellar populations (SSPs) we investigate trends in the star formation history as a function of galaxy mass (velocity dispersion), density of environment and galactic radius. ... MJD of the SDSS observation of the galaxy . ... The history of star formation and mass assembly in early-type galaxies . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Sternberg Astronomical Institute , Moscow University . ... Present edition unites two parts of Catalogue of interacting galaxies by B.A.Vorontsov-Velyaminov: the first part (Part 1) containing 355 systems was published in 1959 [1] and the second one (Part 2) with 497 objects - in 1976 [2].Thus two published parts of Catalogue include 852 interacting systems. ... All new of them (1162 by number) were taken from the comments to the galaxies in Morphological catalogue by Vorontsov-Velyaminov et al.[ ...

... Infrared astronomy . ... Online resources . ... 1995 - . ... 1996 - . ... The Astronomical Journal . ... 1849 - 1997(ADS) . ... 1989 - 2013 . ... The Astrophysical Journal . ... The Astrophysical Journal Letters . ... The Astrophysical Journal Supplement Series . ... Communicating Astronomy with the Public (CAP) Journal . ... Journal for the History of Astronomy . ... Journal Geophysical Research A : Space Physics . ... Linux Journal ** For online access, please contact the Library . ... 1996 - 2013...

... The Round Earth . ... Aristarchus around 270 BC derived the Moon's distance from the duration of a lunar eclipse (Hipparchus later found an independent method). ... Let R be the radius of that circle and T the time it takes the Moon to go around once, about one month. ... Viewed from Earth, a "new Moon" (occuring between the time a thin crescent is last seen before sunrise and the time one is seen shortly after sunset) happens when the Moon in its apparent motion around the sky overtakes the Sun. ...

Sternberg Astronomical Institute, Moscow University, . Moscow, Russia . Supernovae make us brighter .. Search russian astronomical resources . Mirror of International Supernovae Network ( Original site ) . Catalogue of Supernovae Stars . HTTP access to SAI Catalogue of Supernovae Stars . SAI SN Light Curves Online . ... Sternberg Astronomical Institute ( in Russian ) . ... Astronet - Russian Astronomical Network . ... Russian Foundation for Basic Research . ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... Posts tagged ?distance estimation? ... Since I began to subscribe arxiv/astro-ph abstracts, from an astrostatistical point of view, one of the most frequent topics has been photometric redshifts . ... Tags: cosmology , distance estimation , Lutz-Kelker bias , machine learning , Malmquist bias , Photometric Redshift , spectrum , survey , VO . ... Comment . ... Entries RSS . Comments RSS . ... General comments . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

... In this work, we investigate some a new possibility to estimate correlations between radio source position catalogs (RSC). ... Catalogs AUS AUS AUS AUS AUS AUS BKG BKG BKG BKG BKG GSF GSF GSF BKG GSF IAA MAO OPA USN GSF IAA MAO OPA USN IAA MAO OPA USN MAO OPA USN OPA USN GSF IAA IAA IAA MAO With correlations, the system to be solve consists of the equations: The key point is to obtain a reliable estimates of ij. ...

... HST . CALCOS v2.19.6 Release Notes . ... Staff Directory . ... Data . ... HST Overview . ... Retrieving HST Data . ... ID: ---------------- CALCOS v2.19.6 ---------------------------------- This describes changes from calcos version 2.18.5 to 2.19.6 (version 2.19.7 is the same as 2.19.6 except for the installation procedure). ... 918 71634 G140L Segment B only: no SHIFT applied 919 71762 Calcos should read the TIME column as double. ... 960 72794 Calcos should do the Doppler correction after csum. ...

... The greater the distance, the smaller the parallax. ... That triangle has the same proportions as the much larger triangle ABC, and therefore, if the distance B'C to the thumb is 10 times the distance A'B' between the eyes, the distance AC to the far landmark is also 10 times the distance AB. ... The most distant objects our eyes can see are the stars, and they are very far indeed: light which moves at 300,000 kilometers (186,000 miles) per second, would take years, often many years, to reach them. ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

SAI VO . ... SAI CAS . ... Access . ... http://vo.astronet.ru/sai_cas/conesearch?RA= $RA &DEC= $DEC &SR= $radius &cat= $catalog &tab= $table &format= $format . http://vo.astronet.ru/sai_cas/conesearch?RA= $RA &DEC= $DEC &SR= $radius &cat= $catalog &tab= $table &format= $format &columns= $columns . http://vo.astronet.ru/sai_cas/conesearch?RA= $RA &DEC= $DEC &SR= $radius &cat= $catalog &tab= $table &format= $format &withdist= $withdist &NULLS= $nulls where . ... File to store the results . ...

... Previous: Why Indexing the Sky is Desirable . ... An alternative algorithm, proposed here, is based on covering the sky with pixels of approximately equal area, and assigning a unique integer to each pixel. ... For each table, the pixel code value corresponding to the central position (RA, Dec) of each source is computed and inserted into a new column called PCODE. ... This cannot be the primary index of a table since PCODE values are not necessarily unique: one pixel may contain more than one...

The starting page - The catalogues page - The list of the PUL2 fields - The list of the Pul-3(Pul-3SE) fields - The list of the PUL_ERS fields . please read short description of the access form controls . ... catalogue number of star (Obligatory parameter) . ... Right Ascension (ICRF/Tycho-1) J2000 at the central epoch of obs. (hours, minutes, seconds) (Obligatory parameter) . ... Declination (ICRF/Tycho-1) J2000 at the central epoch of obs. (degrees, arcmin, arcsec) (Obligatory parameter) . ...

... Byte-by-byte Description of files: star -S1.txt , star -S2.txt, star -S3.txt ------------------------------------------------------------------------------- Bytes Format Units Label Explanations 1- 4 I4 --- YYYY Year of the date 6- 7 I2 --- MM Month of the date 9- 10 I2 d DD Day of the date 13- 14 I2 h h Hour of the day 18- 24 F7,2 d JD* Julian day of the date , JD*=JD-2450000.5 28- 31 F4.1 degrees M-S Apparent distance between ...

... If mipmethod is set to ``none then MIP events are only flagged but not the column of this event in this readout frame . if set to ``sas then also the corresponding column is flagged, and `` com means additional flagging of the neighbouring columns with flagging of the whole frame if five or more MIPs in one frame . `` onboard emulates the revised algorithm after the ...