... The stars examined here were primarily culled from two lists of X--ray sources in Orion. ... The second region is two degrees in extent east--west and ten degrees north--south with Orionis being near the northern edge. ... In the end, two main regions were chosen for monitoring: stars near Orionis and stars northwest of the belt of Orion. ... The PSPC identified 22 sources within 15 of Orionis in addition to the sources listed in Table 1 , giving a total of 85 X--ray sources in the Orionis region. ...

... 227Wink This paper containes an investigation of 91 sources which appear to be point sources when observed with the angular resolution of the 100-m telescope at 4.9 GHz, teta_a = 2.6', and which we expected to be HII regions. The basic search list was prepared from the 4.9 GHz survey of the galactic plane by Altenhoff et al. ... In the present paper we list 4.9 GHz flux densities only for sources for sources for which we present new observations. ... source structure indicated . ...

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

... Near-IR broad-band imaging of V1318 Cygni reveals the presence of two distinct stellar components oriented north-south, a result recently reported by Aspin et al. ... The distribution of the high density molecular gas traced by the CS J emission is highly concentrated around V1318 and V1686 Cygni, while the total column density of gas traced by the J shows a ridge morphology centered on these sources. ... A molecular outflow has been detected in CO J . ...

AN X-RAY TOUR OF MASSIVE STAR-FORMING REGIONS WITH CHANDRA Not Your Grandmother's HII Regions Leisa Townsley Patrick Broos Eric Feigelson Gordon Garmire Konstantin Getman Junfeng Wang The Penn State Chandra/ACIS Star Formation Group Orion: Chandra Orion Ultradeep Project (COUP, PI Feigelson) 2005, ApJS 160 30 Doradus diffuse: Townsley et al. ... 14 O stars, several form a 1 ring. 15 в 15 2MASS image The 40-ksec Chandra/ACIS-I observation of M17 (17 в 17): 0.5­2 keV; 2­8 keV. ...

T H E AU S T R A L I A T E L E S C O P E C A M PA I G N T O S T U DY SOUTHERN CLASS I METHANOL MASERS M.A.Voronkov (ATNF), K.J.Brooks, A.M.Sobolev, S.P.Ellingsen, A.B.Ostrovskii, J.L.Caswell contact: Maxim.Voronkov@csiro.au Introduction Class I methanol masers (e.g. 9.9 , 25, 104 GHz ) Maser spots are spread around the protostar location Avoid strong infrared ... This fact supports the idea that some class I masers reside in the interface regions of outflows. ...

... Flux density at 1 GHz (/Jy): 22 . ... Distance: H I absorption gives about 10 kpc. ... 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=35.5 Jy) and Parkes 64-m at 5 GHz (4': S=7.8 Jy). ADS . ... 1975, A&A, 45, 239. ... FIRST at 1415 MHz (1'), plus observations of the nearby point source. ... VLA observations of nearby source, plus Einstein observations. ... VLA at 1.4 GHz (1'?2'.9), including H I absorption. ... VLA at 327 MHz (1'), 1.5 (7"?14") and 5 GHz (7"), including spectral comparison. ...

... GRAPHICS SOURCE: W3OH (STAR FORMING REGION) SOURCE: TCOM (STAR) SOURCE: RHYA (STAR) SOURCE: WLEO (STAR) SOURCE: ARP220 (EXTRAGLACTIC SOURCE) Results SOURCE S W 3OH TCom RH ya W Leo Arp220 DIST ANCE S (pc) 2200 1253 617 1220 Z=0.018 TYPE SFR * * * EG INT. FLUX (Jy Km/s) 432.34 1.97 17.05 1.34 52.20 L/L (SNR) 3.6 10(6.8) 5.2 10(14.9) 1.1 10(5.9) 3.4 10(12.7) 6 Tsys (K ) 41.52 RM S/Calc 0.02/0.017 0.01/0.009 0.01/0.008 0.01/0.009 0.008/0.006 9 15.05 8 16.67 9 15.17 16.33 512 (701.9) Table 1. ...

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

... During observations of Sagittarius A* with the orbiting Chandra X-ray Observatory, the bright X-ray source at the very center of our Milky Way brightened dramatically for a few minutes. ... Hot blue stars shine brightly in this beautiful, recently formed galactic or "open" star cluster. ... Moon AND Stars . ... Visible as the central dot is quasar 3C175, the active center of a galaxy so distant that the light we see from it was emitted when the Earth was just forming. 2dF Sees Waves of Galaxies . ...

... One striking feature is a small source of almost pure H 2 line emission, which is located near one of the compact sources in Orion reported by O'Dell and collaborators (HST-18 = 203-504). ... H-H objects, Proplyds, Orion Bar, H 2 . ... We obtained a series of images across the bright rim of the Orion Bar near the peaks of mm-wave molecular line emission with NICMOS cameras 1-3 (NIC1, NIC2, NIC3) in several filters on 1998 February 18. ... The suggestion of an H-H object does not seem compelling. ...

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

... We compare our results with the GRANAT X-ray observations of the Galactic center (Churazov et al. ... It is instructive to compare our results for the Galactic center starburst with what might be expected for a continuous star formation, with the average rate characteristic for the whole Galaxy. For this continuous star formation model, we would expect to observe in the region of around the Galactic center about 10% of the total number of X-ray sources in the Galaxy. ...

... Space Research Institute . Main . ... Main results of the experimental and theoretical research completed in 2010 . ... Moon's topography is shown based on LOLA laser altimeter data, white contour shows a permanently shadowed region and a white rhomb indicates LCROSS spacecraft impact location. ... Ultra deep survey of the sky in hard X-rays, performed by INTEGRAL observatory . INTEGRAL observatory has completed the first and the most sensitive survey of the sky in hard X-ray energy band. ...

... Flux Sign Expo . ... 0.27 PHA . ... The map above is movable . ... Original shows mosaics with all data available. Flux map Error map Significance Exposure . Flux and error maps are in mCrab units. All maps are convolved with instrumental point spread function (PSF) which is Gaussian ( =5'). Exposure maps are in ksec. INTEGRAL/IBIS 9-year Galactic Hard X-Ray Survey* , A , Volume 545, id.A27 { NASA ADS | ... 7-year Galactic Bulge map , 2009 . 9-year Galactic survey , 2012 . ...

We report here on those proposed UIT targets that, in fact, were successfully acquired. ... Note on Filters: . A1 centered at 2500 angstroms with a width of 1200 angstroms . ... NGC 2300 is in a small group of galaxies which has a substantial amount of X-ray emission. ... LUNA again for 777 through lots of filters. ... Supernova 1987A in the Large Magellanic Cloud was observed for 3740 seconds through B5, A1 and B1. ... NGC 5128 or Cen A was observed for 1454 seconds through the B1 filter. ...

spaceweb@oulu.fi - last update: 20 September 1998, 2020 UT (RR) . Traveling Convection Vortex (TCV) is a name given to a specific type of daytime magnetic impulsive events observed by high-latitude ground-based magnetometer arrays. Since the most likely source for TCVs is the solar wind , they are considered to be important processes in transfering energy from the solar wind into the magnetosphere . ... For example, one AMPTE Lithium release in the solar wind caused a TCV event . ...

ESO Phase 3 Data Release Description Please start from this template when preparing the documentation for your ESO Phase 3 data release. ... Finally, the release description will be published as submitted - without further editing by ESO - to support the user community in utilizing the data. ... Please indicate if this is a catalogue data release. ... Data Reduction and Calibration Please address the following questions for scientific catalogue data, particularly in case of source catalogues: . ...

... 2002 October 6 . The Lagoon Nebula in Three Colors . ... Explanation: The bright Lagoon Nebula is home to a diverse array of astronomical objects. Particularly interesting sources include a bright open cluster of stars and several energetic star-forming regions . When viewed by eye, cluster light is dominated by an overall red glow that is caused by luminous hydrogen gas , while the dark filaments are caused by absorption by dense lanes of dust . ... About APOD | ...