... 2015 . ... Observations using the Arecibo S-band (2380 MHz, 12.6 cm) planetary radar system started in 1976 and its power and sensitivity were greatly improved with the telescope upgrade and Gregorian-dome installation in the mid-1990s. Below, we show the number of near-Earth asteroids attempted and detected since the radar program resumed in 1998. ... The number of NHATS objects detected with Arecibo similarly jumped in 2012, and 2015 was again a record year, where we detected 23 of these objects. ...

Supernova 2002fk in NGC 1309 . This page is devoted to information on Supernova 2002fk in NGC 1309 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. ... 2002/09/19.848 . ... JM Llapasset image . ... 13.0 . ... Josep M. Bosch . ... Josep M. Bosch image . ... vsnet-campaign-sn 476 ] SN 2002fk in NGC 1309 . ...

... Data . ... As part of the STIS calibration closeout effort, a number of revised calibration reference files have recently been delivered for STIS data. ... Time dependent sensitivity tables (*_tds.fits files listed in the TDSTAB keyword of the science data file headers) contain the information necessary to correct the STIS flux calibration for those throughput variations as a function of wavelength that depend directly on time or detector temperature. ... MAMA Detector Dark (DRK and TDC) files . ...

... The NSFnet backbone supports Internet connectivity to this site and hopefully the delivery of real data in quasi-real time demonstrates the power of the Internet today. ... Last Images of Comet prior to first Impact . ... Fragment A . KPNO Image taken near Fragment B Impact time . ... Well besides weighing a lot and being cold all the time, here is some animation to show you what the impact events might look like if you were riding one of the fragments . ...

... We present the results of our new observations of TYC 0075 01143 1, a recently discovered double-mode Scuti variable. We improved the frequencies and and pulsation amplitudes, detected the interaction frequencies , , and a possible nonradial frequency . ... The finding chart of TYC 0075 01143 1. ... Using our new observations of TYC 0075 01143 1, we improved the frequencies and , detected oscillations corresponding to interaction between and : and ; we also found a possible nonradial frequency . ...

GCVS Research Group: . Recent publications . Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 81st Name-List of Variable Stars. ... Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 80th Name-List of Variable Stars. ... Samus N.N., Kazarovets E.V., Kireeva N.N., Pastukhova E.N., Durlevich O.V. General Catalogue of Variable Stars: Current status and new Name-lists Odessa Astronomical Publications, 2010, V. 23, p. 102-105. ...

... Gravitational wave search provides insights into galaxy evolution and mergers . ... milky way . ... Astronomy for Kids . ... Has dark matter ever been detected in or around the Milky Way Galaxy? ... While some scientists claim theyт??ve seen evidence of a т??windт?? of dark-matter particles, most members of the astronomy community believe this was a false detection and direct observation of this mysterious material hasnт??t happened yet. ... Get instant access to subscriber content on Astronomy.com!...

... Posts tagged ?Earth? ... Posted by vlk . There is a new report from Bernabei et al. ( arXiv:0804.2741 ) of the direct detection of the effects of Dark Matter that is causing a lot of buzz. ... Category: arXiv , News | 2 Comments . ... Tags: astrostatistics , curve fitting , Earth , ellipses , epicycles , Galileo , history , inference , iTunesU , Kepler , Mars , Owen Gingerich , planetary motion , Ptolemy , Quotes . ... Entries RSS . Comments RSS . ... Entries (RSS) and Comments (RSS) . ...

... 2001 July 25 . Hot Gas Halo Detected Around Galaxy NGC 4631 . ... Explanation: Is our Milky Way Galaxy surrounded by a halo of hot gas? ... Since NGC 4631 is similar to the Milky Way , this observation indicates that our own Galaxy is indeed surrounded by a halo of hot X-ray emitting gas, although we are too close to clearly differentiate it from more nearby extended X-ray sources. The clusters of massive stars probably heat the halo gas. ... About APOD | ...

... Previous: The ACSIS Data Reduction System . ... The AST library supports the attachment of astrometric calibrations to astronomical datasets, the processing of this information, and generation of associated graphical output. ... In this paper we outline some more recent developments and applications, which include a set of efficient data re-gridding algorithms for curvilinear coordinate systems, improved FITS support, user-defined coordinate transformations, and pin-cushion/barrel distortion. ...

16th of July 2015 . On the neutral gas content of nine new Milky Way satellite galaxy candidates . ... Westmeier et al. (2015) use a new, improved version of the HI Parkes All-Sky Survey (HIPASS) to search for HI emission from nine new, ultra-faint Milky Way satellite galaxy candidates recently discovered in data from the Dark Energy Survey (DES). ... The resulting upper limits on M HI /L V and M HI /M * suggest that at least some of the new galaxy candidates are HI deficient. ... today * ATNF | ...

... 8, ``Celestial Mechanics'', 2002 Regularity and chaos for planetary orbits in binaries D. Benest Observatoire de Nice, Nice, France 1. ... Previous papers showed that stable planetary orbits, around either the lightest or the heaviest component of several nearby binary systems, exist up to distances from their primary of the order of more than half the binary's periastron sep­ aration. ... Chaos: bounded or sticky? It is now well­known that planetary dynamics may include some proportion of chaos. ...

... By means of deep optical images obtained at the Special Astrophysical Observatory 6-m telescope it was discovered that some Seyfert galaxies that were earlier considered to be non-interacting objects displayed signatures of elongated tidal envelopes belonging to satellite debris. ... Our results suggest that statistic studies based on popular imaging surveys (for example SDSS) can lead to an underestimation of the fraction of minor mergers among galaxies with active nuclei (AGN). ...

... Flaring events were detected when the fluxes increased by a factor of 2-200. ... Radio flaring events of SS433, Cyg X-3, LSI+61d303 were often optically thin at >5 GHz, and follow to general predictions of the relativistic outflows of mass or fast electrons from binaries. ... After 18 days of the quenched state (10 mJy) Cyg X-3 exhibited the 1Jy- radio flare on 1 Feb 2006. ... At last on 25 July we have detected a very p owerful flare (15 Jy) from Cyg X-3 again. ... ATel, 2006, #729. ...

... Massachusetts Institute of Technology, Rm 54416 Cambridge, MA (617) 253-7568 hbh@zilla.mit.edu HUBBLE SPACE TELESCOPE WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS OF NEPTUNE Two groups have recently used the Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC 2) to acquire new high-resolution images of the planet Neptune. ... These bright clouds and dark spots were tracked as they moved across the planet's disk, revealing wind speeds as large as 325 meters per second (730 miles per hour)....

... The Armagh Observatory . ... Calendar Year 2004 . Financial Year 2004/2005) . Prepared by the Director and Staff . ... Cover: The 2004 June 8 transit of Venus around third contact, observed using the projection method at Armagh Observatory with the recently restored 10-inch Grubb Refractor. ... Research Environment . Staff . ... New TSN Action Plan . ... Armagh Observatory Staff 2004 . ... Presentations by Armagh Observatory Staff 2004 . ... Armagh Observatory New TSN Action Table 2005 . ...

... Star Clusters . ... Stars@ESO . ... By discovering the first double star where a pulsating Cepheid variable and another star pass in front of one another, an international team of astronomers has solved a decades-old mystery. ... This embarrassing discrepancy has been known since the 1960s. To resolve this mystery, astronomers needed to find a double star containing a Cepheid where the orbit happened to be seen edge-on from Earth. ... It contains a Cepheid variable star pulsating every 3.8 days. ...

... Project page . ... Project workpage . Turbulence in the Multiphase Interstellar Medium . Project I | ... Project highlight | ... Towards simulating turbulence with adaptive meshes . ... A. Kritsuk, P. Padoan, M. Norman . ... A. Kritsuk M. Norman . ... A. Kritsuk, M. Norman, P. Padoan . astro-ph/0411626 | ... P. Padoan, A. Kritsuk, M. Norman, A. Nordlund . ... Introducing Enzo, an AMR Cosmology Application . B. O'Shea, G. Bryan, J. Bordner, M. Norman, T. Abel, R. Harkness, A. Kritsuk . ...

... Our Galaxy . ... Stars . ... Space Flight . ... NGC 2841: a spiral galaxy some 46 million light years away. ... It is especially hard to explain this process of star birth in some spiral galaxies. ... Targets include both star clusters and galaxies, and star formation rates seen range from the starburst galaxy M82 (the Cigar Galaxy) which is creating about ten new stars in its core alone every year to the much less fecund star producer NGC 2841. ... Tweets that mention Baby stars of NGC 2841 | ...

... To avoid problems with font mismatches, the files have been converted to pdf format, which means that some dynamic content is lost. ... pdf . Lecture delivered in DAMTP, 2003 . ... A short lecture delivered to the Astrophysics Group in March 2003. ... A marathon 3-hour lecture delivered in January 2003 as part of the joint Cambridge-MIT workshop on quantum information processing. ... A talk delivered to the Astrohpysics, Cosmology and Quantum Information research groups at various times in 2002. ...