The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

... 2014 September 12 . Supernova Remnant Puppis A . Image Credit: X-ray: NASA/CXC/IAFE/ G. Dubner et al. ... It is based on the most complete X-ray data set so far from the Chandra and XMM/Newton observations, and infrared data from the Spitzer Space Telescope. ... Light from the initial supernova itself, triggered by the collapse of the massive star's core , would have reached Earth about 3,700 years ago, though the Puppis A supernova remnant remains a strong source in the X-ray sky . ...

Astronomy Picture of the Day . Puppis A Supernova Remnant . ... 28.08.2015 . ... Credit Copyright: Don Goldman Explanation: Driven by the explosion of a massive star, supernova remnant Puppis A is blasting into the surrounding interstellar medium about 7,000 light-years away. At that distance, this colorful telescopic field based on broadband and narrowband optical image data is about 60 light-years across. ... Publications with keywords: supernova remnant . ... Supernova Remnant Puppis A . ...

... Science Users Information > Science Publications > Science Announcements > Revised Acknowledgement for Publications Based on ESO Data . ... Science Archive Facility . ... When findings based on ESO data are published, acknowledgement is requested through a specific statement, to be found here . ... Please add this acknowledgement to your future papers which are based on ESO data, regardless of whether these are new observations using proprietary data or data obtained from the ESO Science Archive . ...

K-band Arcetri Obscured Supernova Search . What is the KAOSS Project? W hat is the KAOSS Project? Some recent surveys aimed at detecting Supernovae (SNe) in the optical have found that starburst galaxies do not show evidence for an enhanced SN rate, with respect to quiescent galaxies (Richmond et al. ... A similar result was obtained by Navasardyan et al. (2001) who looked for SNe in interacting galaxies, finding no evidence for correlations between SN rate and galaxy properties. ...

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... Recent Results . ... last 10 years in ADS) . in SAO press releases . ... observations database) . ... Last update: . ... Measurement of the dark halo shape in polar ring galaxies . Determining the mass of supermassive black hole in galaxy Mrk6 nucleus based on spectropolarimetric observations . The dust jets in the nucleus of comet 29P/Schwassmann-Wachmann 1 . ... New Polar Ring Galaxies . Traces of recent interactions in isolated Seyfert galaxies . ...

... Mokhovaya st., 11, Moscow, 103907, Russia . ... Moscow Institute for Physics and Technology . ... 9, Dolgoprudny, Moscow region, Russia. ... 1999, Vol. ... In this report, we discuss an approach to construction of information searching systems based on dynamic chaos and intended to operate in computer networks, local area or Internet. Also we discuss an application of this technology to the problems of searching for information in unstructured text databases with natural-language requests. ...

... We describe the construction of convolution kernels that allow one to generate (multiwavelength) images with a common PSF, thus preserving the colors of the astronomical sources. We generate convolution kernels for the cameras of Spitzer, Herschel Space Observatory, Galaxy Evolution Explorer (GALEX), Wide-field Infrared Survey Explorer (WISE), ground-based optical telescopes (Moffat functions and sum of Gaussians), and Gaussian PSFs. ... ADS ] . ADS Citation Query . citations = 125 . ...

Paul J. Francis . ... This page provides information about, and copies of the role-playing exercises and problem-based learning exercises I use in my undergraduate Astronomy classes. You are very welcome to use, copy and modify these exercises. I only ask that you cite me as the source, and that you let me know that you are using them, and how the exercises went. ... For further information, contact Dr. Paul Francis, either by e-mail at . ... Maintainer: Paul Francis . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ... Next: Step 3: Postprocessing to Up: How Pieflag works Previous: Step 1: Amplitude-based flagging . ...

... Posts tagged ?model based? ... arXiv:stat.ME:0910.2585] . Variable Selection and Updating In Model-Based Discriminant Analysis for High Dimensional Data with Food Authenticity Applications . ... Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Jargon , Methods , Spectral , Stat | ... Tags: bimodality , chi-square minimization , Classification , CMD , Estimation , machine learning , massive data , model based , PCA , spectral analysis , spectroscopic , survey , VO . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... Based on the measurements of the Stokes parameters in the continuum and in the broad 0.6563 nm hydrogen emission line obtained with the 6-m telescope for the Seyfert galaxy Mkn 6, secular variability of the hydrogen line profile polarization was discovered; a time lag of less than 2 days between the continuum flux and the polarized continuum emission was determined which corresponds to the size of the region where the polarization of the continuum occurs, less than 0.001 pc. ...

Atomic Data and Plasma Diagnostics Centre . Yuri Ralchenko Database List . ... Atomic and Molecular data bases . Data Base Code . ... Atomic Data for Astrophysics . University of Kentucky, USA . MSCD . ... Center of Atomic data and Plasma diagnostics . ... Atomic Data for Res. ... Atom. ... Atomic Photoionization Database . ... BIBL . ... Atom Data Cent. ... BIBL:MSCD . ... Strasbourg, France . ... DAta Base for X-Ray project . ... Atom.Mol.Data Inf.System . ... Atomic Data Databases . ...

. A new study suggests the massive star that became the Cassiopeia A supernova remnant may have turned inside out as it exploded. Comparing a "before" artist's illustration with an "after" image from Chandra shows key elements are in different areas following the explosion. These results are based on a million seconds of Chandra observing time. Credit: Illustration: NASA/CXC/M.Weiss; X-ray: NASA/CXC/GSFC/U.Hwang J.Laming

... The NAIC requests that any publication based on results from Arecibo Observatory contain the following acknowledgement: . ... NAIC budget permitting, for U.S.-based scientists able to show conditions of demonstrable hardship , NAIC can contribute towards publication costs for papers reporting original observations made with the Arecibo telescope. ... List of publications (PDF) . ... July 1, 2008 - June 30, 2009 . ... July 1, 1994 - June 30, 1995 . July 1, 1993 - June 30, 1994 . ...

This document describes when and how to use name-based virtual hosts. ... IP-based virtual hosts use the IP address of the connection to determine the correct virtual host to serve. ... To use name-based virtual hosting, you must designate the IP address (and possibly port) on the server that will be accepting requests for the hosts. ... For example, suppose that you are serving the domain www.domain.tld and you wish to add the virtual host www.otherdomain.tld , which points at the same IP address. ...

... Based on the accurate radio position, GT 0236+610 was identified with LSI+61 303 (Gregory et al. , 1979[ 59 ]), a B0 star at a distance of 2 kpc (Frail and Hjellming, 1991[ 52 ]) with unusually broad, double-peaked, and variable and emission lines. ... The star wind velocity is estimated as  km s (Howarth, 1983[ 67 ]). ... The radio emission from LSI+61 303 exhibits non-thermal periodic outbursts of variable amplitude with a period of days (Taylor and Gregory, 1982, 1984[ 188 , 189 ]; Coe et al. ...