... We have started a programme of observations of nearby starburst and AGN galaxies with MICHELLE, with the aim of investigating the spatial extent of "Unidentified Infrared Bands (UIB)" emission in these galaxies, and in particular relating these to multi-frequency matched resolution radio maps. ... The spatially integrated MICHELLE spectrum of NGC 7469 in the 8 - 11.5µm range shows an equivalent width of 11.3µm UIB feature which is much smaller then measured by ISO. ...

ATCA flux density scale at 12mm R.J. Sault 7 December 2003 The flux of PKSB1934-638 at centimetre wavelengths has been well-studied by Reynolds (1994), and is in routine use as the primary flux density reference for the ATCA. ... With the installation of receivers at the ATCA which operate in the 16-25 GHz window, there is a clear need for a flux density scale in this band. ... The data were measured as part of pro ject C1225 and as special observations to determine the flux density of 1934-638. ...

... A hundred years later, a handful of Tunguska-sized asteroids have been spotted by telescopes, but most remain unseen. The asteroid designated 2008 TC3 , which made the news on October 6th before colliding with the Earth on October 7th was too small to constitute a part of the "Earth impact hazard". ... 2008 TC3, for example, finally exploded in the atmosphere above Sudan . ... Wednesday, 8 October 2008 01:15 . International Year of Astronomy, Ireland National Node . ...

Instrument Science Report NICMOS-98-010 NICMOS Parallel Thermal Background: Results from SMOV and Cycle 7. ... Parallel observations in NICMOS Camera 2 and Camera 3 are taken at different pointings and analysis of the data shows the HST thermal emission to be fairly stable, with an orbital variation of ~5% and a secular variation of ~8%. ... In this study, the thermal background measurements are presented as the average count-rate calculated over the entire chip. ...

Proposal Identification No.: P2115 Date Received: 2005-Jun-01 23:45:27 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 12 Hours Possible Radius-to-Intensity Mapping and Mode Switching in PSR B0950+08 We request 12 hours of telescop e time for observations of a well-known pulsar, PSR B0950+08, in which we want to investigate whether its average profile at the same observing frequency represents ...

... Circle area is proportional to the number of tweets + retweets tweets retweets . Order accounts: by user number (effectively random) by number of tweets (includes retweets) by number of followers by number of followers that also tweeted about AAS223 by number of friends that also tweeted about AAS223 . ... The top/left position is for the user with the largest number of followers, and the bottom/right is for the smallest number of followers. by number of followers that also tweeted about AAS223 . ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Next: The main observational parameters Up: Spectral survey of Case Previous: CCD observations and data . ... We divided the presentation of the observed galaxies into the two main groups. In Tables 2 and 3 we give some general parameters, line intensities and equivalent widths for 142 galaxies with the detected emission lines. We summarize data in Table 4 for the rest 44 galaxies where we have not detected emission lines (in the blue part of the spectrum). ... Quasar CG 273 . ...

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

... The resolution used was R=19,000 (= 0.2-0.5 е) from 3600- 9000 е ABSTRACT H H Highly Variable Balmer Lines a) Inverse P-Cygni Profiles H and H present consistent IPC profiles in their emissions with red-displaced absorption components Recent detections of rapid variability in most lines observed (3600 to 9000 е, resolution = 0.2-0.5 е), in the enigmatic Herbig Be star ... However, a small number of HAeBe (11%) and T Tauri (7%) stars have been found to present IPC profiles in H (3)....

Peremennye Zvezdy ( Variable Stars ) 35 , No. ... We present the results of our new observations of QS Draconis, a recently discovered double-mode high-amplitude Scuti variable, HADS(B) type. ... Our CCD observations in the Johnson bands were performed at the Tien Shan Astronomical Observatory of the V.G. Fesenkov Astrophysical Institute, at the altitude of 2750 m above the sea level. ... The finding chart (Fig. 1) identifies the variable star, comparison star, and check star. ... Fig. ...

Next: The X-ray Optics Up: No Title Previous: No Title . ... NASA's newest Great Observatory, the Chandra X-Ray Observatory (CXO) - formally known as the Advanced X-Ray Astrophysics Facility (AXAF) - launched on July 23, 1999 and represents such an advance. ... CXO has broad scientific objectives and an outstanding capability to provide high-resolution ( 0.5-arcsec) imaging, spectrometric imaging and high resolution dispersive spectroscopy over the energy band from 0.1 to 10 keV. ...

The radial distribution of metallicity of star-forming galaxies in a galaxy cluster can inform us about the mass assembly and enrichment history of the galaxy cluster. ... Both galaxy clusters are cool-core clusters at redshift z т?? ... The gas-phase metallicity of star- forming galaxies in MACS1115+01 exhibit anti-correlation with projected distance т??0.15 ТБ 0.08 dex/Mpc, whereas the radial metallicity distribution of RXJ1532+30 is statistically flat (т??0.09 ТБ 0.12 dex/Mpc). ...

... We describe a new library (AST) which provides a flexible high-level programming interface for handling world coordinate systems in astronomy and for producing graphical output. ... Relationships between coordinate systems are represented within AST by objects called Mappings. ... While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... Like all objects, a Frame also provides methods. ...

We present the results of our observations of the white-light corona in polarized light performed at Criciuma eclipse, Brazil. During the observation of 3.11.94 we have made five couple of pictures of the solar corona in polarization light. ... Koutchmy S., Molodensky M., Starkova L., Ershov A., Matsuura O .: ... Molodensky M., Starkova L., Koutchmy S., Ershov A .: ... Koutchmy S., Molodensky M.M., Starkova L.I . ... Koutchmy S., Molodensky M.M., Starkova L.I. Koutvitsky V. and Ershov A . ...

... STScI-PRC00-28 IC 418: THE "SPIROGRAPH" NEBULA Glowing like a multi-faceted jewel, the planetary nebula IC 418 lies about 2,000 light-years from Earth in the direction of the constellation Lepus. This photograph is one of the latest from NASA's Hubble Space Telescope, obtained with the Wide Field Planetary Camera 2. A planetary nebula represents the final stage in the evolution of a star similar to our Sun. ...

XMM-Newton CCF Release Note XMM-CCF-REL-183 EPIC-pn spectral response R. D. Saxton 11 November 2004 1 CCF components Name of CCF VALDATE Blocks changed XSCS ag EPN QUANTUMEF 0015.CCF 2000-01-01 FRACTION CHANNEL, FRACTION ENERGY QE TOTAL, EBINS FRACTION NO EPN REDIST 0009.CCF 2000-01-01 NOISE PARAMS, PARTEVENT PARAMS THRESH LOSS NO 2 Changes Recent calibration work has shown that the Epic-pn redistribution function is in practice narrower than that represented in the current matrices. ...

... Microstructure RAS; Nizhny Novgorod; Russia 4 National Institute for Materials Science, Tsukuba 3050047, Japan A Superconducting Integrated Receiver ( SIR ) [1] comprises on one chip a low-noise SIS mixer with quasioptical antenna, an Flux-Flow Oscillator ( FFO ) acting as a Local Oscillator (LO) and a second SIS harmonic mixer (HM) for the FFO phase locking ... Continuous tuning of the phaselocked local oscillator has been realized at any frequency in the range 300-750 GHz. ...

In this method the fields outside and inside a particle are represented by expansions in term of proper basis functions (practically always the vector spherical harmonics). Since the particle surface does not coincide with the coordinate surface, it is impossible to satisfy the boundary conditions exactly, and the expansions are limited by a finite number of terms, and the boundary conditions are considered in a finite set of points (matching points). ...

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...