... 5 National Astronomy and Ionosphere Center, Cornell University, Ithaca, NY 14853, U.S.A. In this paper we present new radio and near-infrared observations of a bright Halpha knot located south-east of the Cepheus OB3 association, near the ionization front that divides the S155 diffuse HII region from the Cepheus B molecular cloud. ... The larger of the small--diameter components is a blister-type compact HII region, still partly bounded by high density molecular gas. ...

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• Ronbun (Abstract)
• Tegami (Abstract)
• NIR Inages of H2O Masers (Abstract)

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...

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• High-resolution Near-infrared Study of the Deeply Embedded Young Stellar Object

Why areNuclear Star Clusters interesting? 1) Many -- if not all ґ nuclear star clusters appear to be young, or at least have a young population of stars. ... 3) If nuclear clusters indeed form in the galaxy center, their impact on the dynamics of stars and gas in the central region of the host galaxy needs to be understood, because it can potentially influence the galaxy morphology. For example, it has been suggested that nuclear clusters can destroy stellar bars and thus form galaxy bulges. ...

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• HST this week: 092
• HST this week: 266
• HST this week: 222

Advisor's project abstract: . How do stars form? ... The fact that stars form in dense clusters raises the possibility that interactions between stars may govern the process of star and planet formation. ... As a project, the student will be assigned a star forming region in the Orion molecular cloud containing a cluster of young stars. ... A summer intern will also carry out diagnostics studies of the stellar activity and variability using the results from these simulations. ... Abstract: . ...

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• SAO Summer Intern Program Projects, 2015
• Southern SHARC survey
• X--ray Activity and PMS Stars.

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

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• Object Detection Using Multi-Resolution Analysis
• The ISO Post-Mission Archive
• Clustering Analysis Algorithms and Their Applications to Digital POSS-II

... 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? ...

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• ESO - Thesis Topic: High-mass Star Formation at High-Angular Resolution
• Infrared/visible crossfade of the Monoceros R2 star-forming region | ESO
• ESO - Thesis Topic: Studying the first galaxy clusters with ALMA

... NGC 3293: A Bright Young Open Cluster . ... Credit: David Malin ( AAO ), AATB Explanation: Hot blue stars shine brightly in this beautiful, recently formed galactic or "open" star cluster. Open cluster NGC 3293 is located in the constellation Carina , lies at a distance of about 8000 light years , and has a particularly high abundance of these young bright stars. ... If true, star formation in this open cluster took at least 15 million years. ... M45: The Pleiades Star Cluster . ...

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• Star Forming Region NGC 6357
• NGC 281: Cluster, Clouds, and Globules
• XWare > APOD

The Detection of Prebiotic Molecules in the ULIRG Arp 220 Ghosh, T., Catinella B., Lebron M., Lerner M.S., Minchin R., Momjian E., Salter C.J. (NAIC - Arecibo Observatory) ABSTRACT Organic molecules in space are thought to form mostly on the surface of dust grains. ... Methanimine is seen in emission, and is likely to be a weak maser. ... These HCN lines, previously undetected in any source, appear in absorption against the continuum radiation of this galaxy. ...

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• HISA Poster for the 195th Meeting of the AAS, January, 2000
• The Pleiades

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. ...

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• ATNF Daily Astronomy Picture
• Programme - Abstract
• The giant HII region NGC 3603

... 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. ...

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• Catalog of Galaxies behind the Milky Way
• XID: Cross-Association of ROSAT/Bright Source Catalog
• A 10-GHz Radio Continuum Survey

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

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• IAU Commission #37 (Star Clusters and Associations)
• Designated Observatory Application
• GSAOI Orion Nebula Cluster Science Page

... August 23, 1996 . NGC 3293: A Bright Young Open Cluster . ... Explanation: Hot Blue stars shine brightly in this beautiful, recently formed galactic or "open" star cluster. Open cluster NGC 3293 is located in the constellation Carina , lies at a distance of about 8000 light years, and has a particularly high abundance of these young bright stars. ... If true, star formation in this open cluster took at least 15 million years. ... About APOD | ...

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• APOD: March 29, 1998 - NGC 3293: A Bright Young Open Cluster
• APOD: 2015 April 6 - NGC 3293: A Bright Young Star Cluster
• APOD: 2001 September 9 - NGC 3293: A Bright Young Open Cluster

... Future seminars . P a s t seminars . Seminar council . Stability of cold fronts in clusters of galaxies " . E. Churazov (IKI, MPA) . ... One of the insteresting results of Chandra and XMM-Newton observatories is the discovery of sharp structures in the X-ray surface brightness of galaxy clusters. These structures (a.k.a. cold fronts) are likely associated with the contacted discontinuities formed when a hot gas flows over a colder gravitationally bound gas cloud. ...

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• INTERBALL Zvenigorod Symposium Preliminary Registration Form

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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• Astro-2 and the UIT Experiment
• Astronomy HyperText Book: Stellar Clusters
• Constrains on Dark Matter

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б? Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

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• A Spectacular View of the Lagoon Nebula | Astronotes

... 320, P L45-L48 (1997). Abstract . ... 320, P L49-L52 (1997). ... 320, P L53-L56 (1997). ... 320, P L57-L59 (1997). ... 320, P 685-695 (1997). ... 320, P 696-704 (1997). ... 320, P 705-716 (1997). ... 320, P 717-730 (1997). ... 320, P 731-745 (1997). ... 320, P 746-756 (1997). ... 320, P 757-775 (1997). ... 320, P 776-782 (1997). ... 320, P 783-786 (1997). ... 320, P 787-790 (1997). ... 320, P 791-798 (1997). ... 320, P 799-810 (1997). ... 320, P 811-822 (1997). ... helpdesk@link.springer.de . ...

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• Springer LINK:A&A-EE: Table of Contents Volume 317 Number 2 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 331 Number 1 (1998)
• Springer LINK:A&A-EE: Table of Contents Volume 322 Number 3 (1997)

... All previous such superstars have been found along with many companion stars in the centres of crowded star clusters. The star is known as VFTS 682 from the VLT-FLAMES Tarantula Survey catalogue of the European Southern Observatory's Very Large Telescope (VLT) located at Paranal in Chile by means of the attached FLAMES instrument. ... Although VFTS 682 seems to be alone now it is not very far away from a very rich star cluster known as RMC 136 that contains several similar superstars. ...

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• M.D. Smith, Research Astronomer
• William Herschel
• Bright Point Studies

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

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• Achievements - Page 4
• Dept. for Physics of Stars&Galaxies
• MAO NASU :: Topic: Fw: IAU Commission Reform (1/1)

... For this paper: postscript PPEUC CMB index 1 Introduction.. ... We report on a 16 ks X-ray observation with the ROSAT PSPC towards the center of a CMB decrement detected by Jones et al. (1997) in the direction of the quasar pair PC1643+4631 A & B. At the position of the decrement we find no evidence for emission by hot gas which could give rise to the Sunyaev-Zel'dovich effect. ... We conclude that the CMB decrement is not a typical galaxy cluster. ... 2 The ROSAT PSPC observation . ...

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• Galaxy Evolution: Cosmological evolution of star formation
• Bojan Nikolic -- 90 GHz Continuum Observations of Messier 66
• Galaxy Evolution Over Five Decades

. Cygnus X hosts many young stellar groupings, including the OB2 and OB9 associations and the cluster NGC 6910. The combined outflows and ultraviolet radiation from the region's numerous massive stars have heated and pushed gas away from the clusters, producing cavities of hot, lower-density gas. In this 8-micron infrared image, ridges of denser gas mark the boundaries of the cavities. Bright spots within these ridges show where stars are forming today. NASA/IPAC/MSX

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• Airborne observatory views star-forming region W40 | Astronomy.com
• Do globular clusters form in a galaxy's halo or migrate in from outside? If the
• Chandra X-ray Observatory delivers new insight into formation of star clusters