... Posts tagged ?star formation? ... Star Formation via the Little Guy: A Bayesian Study of Ultracool Dwarf Imaging Surveys for Companions by P. R. Allen. ... ArXiv] Bayesian Star Formation Study, July 13, 2007? ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

... Science . ... The goal is to bring together two communitities: the one working on star formation (mostly galactic) and the one working on the formation of young massive clusters (mostly extra-galactic). We will link galactic with extra-galactic work, optical/NIR techniques with sub-mm/mm/radio ones, the formation of stars with the one of massive star clusters - observations and theory. ... Coordinated by Marina Rejkuba (abstract) . ... How did star formation proceed in Globular Clusters? ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Star Atlas . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... star formation . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

We use the near-infrared BrнЕ hydrogen recombination line as a reference star formation rate (SFR) indicator to test the validity and establish the calibration of the Herschel/PACS 70 нјm emission as a SFR tracer for sub-galactic regions in external galaxies. ... We use the extinction corrected BrнЕ emission to derive the SFR(70) calibration for H II regions in these two galaxies. ...

... The dates for the 3 rd Asian-Pacific Astronomy Olympiad are November 21-29. ... See personal data of the previous APAO as an example. ... Teams may stay in Xiamen since two days before before November 21 and two days later November 29, i.e. it is possible to arrive since November 19 and depart not later December 1. ... Monday November 19 Possible delegations arrive . Tuesday November 20 Possible delegations arrive . ... Friday November 30 Possible delegations depart . ...

... New IRAF tools for the photometric calibration of optical/IR images are presented. The new tools are standard star catalog and world coordinate driven, requiring both accurate standard star catalog coordinate and accurate image coordinate data. Network access to standard star catalog servers is supported. ... The photometric calibration software will automatically convert the standard star coordinates from the standard star coordinate system to the image coordinate system. ...

... The history of star formation was successfully analyzed for the first time based on the spectra of the stellar population of dwarf galaxies of low surface brightness outside the Local Group. We have investigated the stellar population of two dwarf spheroidal galaxies KDG61 and KDG64 in the central part of a close group of galaxies M81. ... These galaxies are dominated by the old stellar population (12-14 billion years) of low metallicity ([Fe/H] ~ -1.5). ... KDG61 . ... KDG64 ...

. Next: Routines of the Calibration Up: Coordinate Definitions used by Previous: Spatial coordinate systems Contents . Several calibration entities are time dependent, i.e., change on a time-scale given by the typical duration of an observation ( ksecs). Each corresponding CAL subroutine receives a time argument which specifies a point in time represented as ellapsed number of seconds since the fixed mission reference time . 1998-01-01T00:00:00.00 TT = 1997-12-31T23:58.56.816 UTC . Michael Smith 2011-09-20

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... Staff . Research staff . Technical, administrative & librarian staff . ... Staff in alphabetic order . Research . ... Galaxies, AGN, Cosmology . ... Infrared astronomy . Optical turbulence . ... Historical highlights . Historical research . ... At the Observatory, there are active experimental groups which develop technologies for the realization of the largest optical and infrared telescopes and of advanced optical instrumentation for visible wavelengths, infrared and radio. ...

... 2002) Coordinated fueling: nearby AGN hosts Narrowline AGN hosts in SDSS: high M* and * but "black" rum younger stellar ages (not just in nucleus!) coordinated fueling of star formation and light rum accretion is key. ... Vermeulen et al. (2003): 33% of radioloud AGN (z < 0.8) show HI absorption features, more frequently (and more highly) blueshifted than redshifted. ... HI absorption against radioloud AGN traces a mixture of infall, outflow, and rotation; key fuel may be hot gas. ...

The INTERBALL space mission ( INTERBALL-1 with its subsatellite MAGION-4 in orbits with an apogee of 30 Re, and INTERBALL-2 with its recently reactivated MAGION-5 subsatellite in orbits with an apogee of 4 Re geocentric) continue to conduct important measurements in the solar wind, magnetosheath, magnetotail, magnetopause and above the auroral region. ... Plasma Boundaries in Near-Earth Space . ... Now we announce that online ABSTRACT submission is available at the SYMPOSIUM home page . ...

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

Peremennye Zvezdy ( Variable Stars ) 35 , No. 3, 2015 . ... GCVS names are announced for 13 galactic variable stars of rare types (mostly Novae) discovered in 2013-2015. ... 2013). ... Till the end of 2013, announcements of permanent GCVS names in BAT publications continued (Kazarovets 2013, Nakano et al. 2013a, 2013c, 2014, Nishiyama et al. 2014a, Samus 2013c), with names announced for 7 stars. ... GCVS name . ... Kazarovets, E.V., Samus, N.N., 2013, Peremennye Zvezdy/Variable Stars , 33 , No. ...

The FITS "World Coordinate System" (WCS) standard defines keywords and usage that provide for the description of astronomical coordinate systems in a FITS image header. ... I: "Representations of world coordinates in FITS" , Greisen, E.W. & Calabretta, M.R. (2002), Astronomy & Astrophysics , 395 , 1061-1075. ... This diagram illustrating Bonne's projection with conformal latitude +35 was produced by WCSLIB , a C implementation of the coordinate transformations defined in the FITS WCS papers. ...

... MPC (Minor Planets Circular) 62565,62566,62864,63122,63123 Informations. relative to: absolute reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: UTC reduction: no information coordinates: absolute diff. refraction: no information receptor: see in the data telescope: 0.36-m f/3.9 Schmidt-Cassegrain observers: D. Herald data included in standard data file: no Comments. ... Hour of right ascension (alpha, h) 6. ... Degree of declination (delta, deg) 9. ...

The FITS archive & data processing pipelines . ... The archived data are broad band images (BBI) and long-slit spectra (LSS) plus their associated template and calibration files. The data in HFA can enter into the HyperLeda processing pipeline and the results can be freely downloaded. ... Definition of the file system (structure of the archive) . ... The coordinate systems must be updated when the data (pixel data, other keywords, related tables) are altered (eg. rebinning of the image). ...

This is the first announcement for the conference: GALAXY EVOLUTION OVER FIVE DECADES Sept 3-6, 2013 Cavendish Astrophysics, Cambridge, UK Dear colleagues, We are pleased to announce that pre-registration is now open for a conference on galaxy evolution to be held at Cambridge University, which will focus on studies from infrared to long radio-wavelengths. ...

USA Solar Mission . Courtesy of NASA's National Space Science Data Center . The Solar Maximum Mission (SMM) was designed to provide coordinated observations of solar activity, in particular solar flares, during a period of maximum solar activity. ... Complementary studies were made as part of the SMM guest investigator program, and coordinated in situ measurements of flare particle emissions were made from the ISEE 3 spacecraft. The spacecraft was launched on February 14, 1980. ...