... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

Instrument Science Report WFC3 2000-06 Science Impact of a New Coating for the WFC3 CCD UVIS Channel Ilana Dashevsky, Mauro Giavalisco October 2, 2000 ABSTRACT We assess the science impact of using a new coating for the reflective elements of WFC3. ... Two possibilities have been identified, namely to use the new coating only on the pick-off mirror of WFC3 (single surface) or to use it on all its reflective elements (3 surfaces). ... Figure 1: The efficiency of the single surface coating. ...

Next: M.D. Smith, Research Astronomer Up: Research Previous: J.G. Doyle, Research Astronomer Contents . During the final stages in its life, a star is transformed in ways which remain poorly understood. ... Each transformation is a response to changes in chemical composition in the stellar interior as nuclear reactions convert one source of fuel into another. ... Consequently, the number of stars currently in these late stages of stellar evolution is comparatively small. ...

... July 10, 1998 . NGC 1531/2: Interacting Galaxies . ... Explanation: This dramatic image of an interacting pair of galaxies was made using the 1.5 meter telescope at the Cerro Tololo Inter-American Observatory near La Serena, Chile. NGC 1531 is the background galaxy with a bright core just above center and NGC 1532 is the foreground spiral galaxy laced with dust lanes. ... These galaxies lie close enough together so that each feels the influence of the other's gravity. ... About APOD > . ...

... Planets . ... Alien Life . ... By admin March 21, 2011 Posted in: Alien Life . ... X,Y,Z in the Wow! signal. ... The discovery of these new planets has made the possible discovery of alien life seem that little bit more realistic. ... Then contact the government, the International Astronomical Union, the United Nations and those scientific societies that support SETI . 4.€а€а€а€а€а€а Make a public announcement, crediting your institution and all sponsors. 5.€а€а€а€а€а€а Make your data available ...

The 2016 Project ASTRO introductory workshop will take place September 16-17, 2016. ... Participating teachers and astronomers are required to attend. ... Home Phone: . ... work email . ... Please briefly describe your background and your experiences in astronomy (if different). Describe experiences you have working with schools or explaining astronomy to students and/or the public. ... What grade level(s) do you prefer to work with (check all that apply) . ... either work or home . ...

... Tonight's Sky . ... Observing . ... Star Atlas . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... A "super-Earth" identified . ... This icy super-Earth dominates the region around its star that in our solar system is populated by the gas-giant planets Jupiter and Saturn," explains Andrew Gould, leader of MicroFUN and professor of astronomy at The Ohio State University. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

SAS home . ... EPIC background spectra are normally extracted from regions of the observation field-of-view, once "contamination" due to individual discrete celestial sources has been removed. ... In order to cope with this situation, blank sky event lists can be downloaded from the XMM-Newton Science Operations Center web site. ... It is in principle possible as well to extract background spectra from blank field event lists, if the spectrum accumulation regions are defined in sky coordinates. ...

... The DT tag element specifies a term name, and you can have several terms per DD element. ... CLASS . This a space separated list of SGML NAME tokens and is used to subclass tag names. ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...

... There are several explanations for these X--ray quiet PMS stars. To examine the explanations, it is proper to divide the PMS stars into three groups: those bluer than R - I = 0.7, those redder than the X--ray sources (R - I > 1.25) and those with colors similar to the X--ray sources. ... A total of 26 of the non--X--ray detected PMS candidates had spectra taken. ... Between V=14 and V=16, I find 25 stars which are X--ray sources and estimate 19 non--X--ray PMS stars. ...