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Ionized gas extends over 40 kpc in an odd radio circle host galaxy

A new class of extragalactic astronomical sources discovered in 2021, named odd radio circles (ORCs)1, are large rings of faint, diffuse radio continuum emission spanning approximately 1 arcminute on the sky. Galaxies at the centres of several ORCs have photometric redshifts of z ≃ 0.3–0.6, implying physical scales of several 100 kpc in diameter for the radio emission, the origin of which is unknown. Here we report spectroscopic data on an ORC including strong [O ii] emission tracing ionized gas in the central galaxy of ORC4 at z = 0.4512. The physical extent of the [O ii] emission is approximately 40 kpc in diameter, larger than expected for a typical early-type galaxy2 but an order of magnitude smaller than the large-scale radio continuum emission. We detect an approximately 200 km s−1 velocity gradient across the [O ii] nebula, as well as a high velocity dispersion of approximately 180 km s−1. ....

Western Australia , Planck Collaborationet Al , Library Of Fast Radiative Shock Models , Astrophysics Source Code Library , Sloan Digital Sky , Evolutionary Map , Australian Square Kilometre Array , Australian Square Kilometre Array Pathfinder , Boolardy Engineering Test , Giant Meterwave Radio , Keck Cosmic Web Imager Integral Field , Fast Radiative Shock , Hubble Space Telescope , Source Code Library , Sloan Digital Sky Survey , Wide Field Infrared Survey Explorer ,

A planetary collision afterglow and transit of the resultant debris cloud

Planets grow in rotating disks of dust and gas around forming stars, some of which can subsequently collide in giant impacts after the gas component is removed from the disk1–3. Monitoring programmes with the warm Spitzer mission have recorded substantial and rapid changes in mid-infrared output for several stars, interpreted as variations in the surface area of warm, dusty material ejected by planetary-scale collisions and heated by the central star: for example, NGC 2354–ID8 (refs. 4,5), HD 166191 (ref. 6) and V488 Persei7. Here we report combined observations of the young (about 300 million years old), solar-like star ASASSN-21qj: an infrared brightening consistent with a blackbody temperature of 1,000 Kelvin and a luminosity that is 4 percent that of the star lasting for about 1,000 days, partially overlapping in time with a complex and deep, wavelength-dependent optical eclipse that lasted for about 500 days. The op ....

United States , Distrito Federal , Rizzo Smith , Astronomical Society Of The Pacific , Analysis Center , Sky Automated Survey For Supernovae , American Chemical Society , G All Sky Automated Survey Catalog , Astrophysics Source Code Library , Exoplanet Survey Satellite , Sky Automated , Astronomical Data Analysis Software , Space Sci , All Sky Automated Survey , All Sky Automated , Acta Astron , Sky Automated Survey , Vizier On Line Data Catalog , Remote Observatory Atacama Desert , Variable Star Observers , Release Products , Infrared Processing , Astronomical Society , Open Science , Milky Way , Large Magellanic Cloud ,

1С: Библиотека стандартных подсистем, редакция 3.1

1С: Библиотека стандартных подсистем, редакция 3.1
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Means Administrationi Service , Source Code Library , Development New , Means Administration , மூல குறியீடு நூலகம் ,

1С: Библиотека стандартных подсистем, редакция 3.1

1С: Библиотека стандартных подсистем, редакция 3.1
linux.org.ru - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from linux.org.ru Daily Mail and Mail on Sunday newspapers.

Means Administrationi Service , Source Code Library , Development New , Means Administration , மூல குறியீடு நூலகம் ,

1С: Библиотека стандартных подсистем, редакция 3.1

1С: Библиотека стандартных подсистем, редакция 3.1
linux.org.ru - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from linux.org.ru Daily Mail and Mail on Sunday newspapers.

Means Administrationi Service , Source Code Library , Development New , Means Administration , மூல குறியீடு நூலகம் ,