M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . 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. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

Detected Supernovae . The search have produced till now the detections of 4 SNe. ... This result highlights the power of infrared monitoring in detecting Obscured SNe and indicates that optical surveys are probably missing a significant fraction of SNe, especially in obscured systems such as starburst galaxies. ... In Fig. we show the archival SOFI image of NGC3256 (left) and the first image obtained in 2001 (right) where SN2001db has been detected. ...

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Using the 21-cm line of HI to search for galaxies is a relatively new technique, and it is important to understand the types of objects which will be discovered by large HI blind searches, such as those to be conducted with the multibeam system. Will a 21-cm-selected sample consist of the same types of galaxies which are found in optical- or IR-selected samples, or will they differ? ...

... I have been involved into the La Sagra asteroids team since the beginning of the La Sagra Observatory (OLS) in Andalusia, Spain in 2006. ... In the following years I contributed to the continuous improvements of the search methods and data reduction pipelines. ... There I got introduced to a study to examine the effect of host galaxy dust extinction on the observed properties of Type Ia supernovae (SNe Ia). ... GRBs host galaxies photometry . ... Copyright 2012 Aleksandar Cikota. ...

... HST . ... Home . ... Data . ... HST Peer Review Process . ... WFPC2 Home . ... Calibration . Calibration Home . ... Data Analysis . Data Analysis Home . Data Analysis Library . ... Instrument Handbook . Data Handbook . ... Input the surface brightness in magnitudes per square arcsecond, and choose a spectral type from the menu. The default is to use Johnson Visual magnitudes, but you can use the "Visual" menu to select other Johnson-Cousins magnitudes, or AB magnitudes. ...

Supernova 2011ja in NGC 4945 . This page is devoted to information on 2011ja in NGC 4945 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . ... Discovered by Berto Monard (South Africa). ... This supernova is in the Constellation Centarus . If anybody has any images of NGC 4945 taken in around the discovery date (2011/12/18) I would be interested in them. ... Berto Monard . ... Joseph Brimacombe . ... 2012/01/01 . ...

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

Peremennye Zvezdy ( Variable Stars ) 26 , No. ... The light and colour curves are typical for this class of objects, the absolute magnitude at maximum and decline rate are in agreement with the relationship between these parameters established for SNe Ia. SN 2004fu was discovered by Arbour (2004) on unfiltered CCD images taken with a 0.3-m Schmidt-Cassegrain reflector on 2004 November 4.87 (approximately at 16 8) and 5.81 (approximately at 16 5). ... 2004). ... 0.03 . ... C60 . ...

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

So how do we find objects on the other side of the Universe? ... The latest instruments enable us to scan large areas of sky. Using Cerro Tololo's Blanco 4m telescope and the Canada-France-Hawaii 3.5 metre telescope , we are able to scan a piece of sky larger than the size of the moon every 5 minutes to a faintness level which allows us to find Type Ia supernovae halfway across the Universe. Type Ia supernovae are very rare - but each image we take contains 50000 galaxies. ...

... Luminous blue variable (LBV) stars are the most massive stars with 40-120 solar masses, which are passing the short stage of evolution losing their hydrogen envelopes before exploding as Supernovae. These are extremely rare objects, only about a dozen of the most massive LBVs are known in the Galaxy. ... In the spectral observations of stars with infrared circular nebulae, found in the Spitzer survey (24 microns), a new LBV star in the Galaxy was discovered. It was named MN112. ...

... News . ... Star Atlas . ... stars . ... Astronomers discover a new kind of supernova . This new class of supernova, type Iax, is fainter and less energetic than type Ia. ... Today, astronomers are reporting their discovery of a new kind of supernova called type Iax. ... Based on a variety of observational data, the team concluded that a type Iax supernova comes from a binary star system containing a white dwarf and a companion star that has lost its outer hydrogen, leaving its helium dominated. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Our Galaxy . ... To locate it, look along the imaginary line between the two end stars on the leading edge of the PloughтАЩs blade (Merak and Dubhe) and Polaris (the North Star), the galaxy M82 (also known as the Cigar Galaxy) along with its companion M81, lies just off this line about a third of the way between the Plough and Polaris. €а€аAs usual, the supernova is far brighter than its home galaxy, appearing as an extra star. ...

... X-ray sources in galaxies: active nuclei, primodal black holes or microquasars . The last findings in observations of point-like X-ray sources in galaxies are reported. ... A new class of objects has been discovered - the Ultraluminous X-ray (ULX) sources, which could be as black holes of intermediate mass (100-1000 suns), being captured by galaxies and spiralling in because of dynamical friction, or microquasars (SS433-like stars), being orientated "face-on". ...

A1439 2000-May-31 10:13:28 Technical Page Proposal Type: Regular General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Extragalactic Total Time Requested: 86 Hours Proposal Title: HI observations of low surface brightness 2MASS galaxies ABSTRACT: We propose to obtain 21cm HI line spectra at Arecibo of a unique sample of low surface brightness (LSB) galaxies discovered in the 2MASS near-infrared survey. ... These data will be used for the Ph.D. Thesis project of the PI. ...

... Seminar archive . ... Type Ia Supernovae (SNe Ia) have an important role to measure a distance to an anonymous galaxy because they have a good correlation of the decline rates of the light curves with the absolute luminosity. ... First, super-Chandrasekhar SNe which have extremely high luminosity, slow decline rate of the light curves, slow expansion velocity and strong carbon features. ... As another example of diversity of SNe Ia, I would like also to introduce Type Iax SNe. ... All seminars: . ...