We present Spitzer Space Telescope IRAC and MIPS observations of the Galactic globular cluster M15 (NGC 7078), one of the most metal-poor clusters, with a [Fe/H]=-2.4. Our Spitzer images reveal a population of dusty red giants near the cluster center, a previously detected planetary nebula designated K648, and a possible detection of the intracluster medium arising from mass-loss episodes from the evolved stellar population. ...

... The 7 and 15 um observations of selected fields in the Galactic Plane obtained with ISOCAM during the ISOGAL program offer an unique possibility to search for previously unknown YSOs, undetected by IRAS because of lower sensitivity or confusion problems. ... The main indications of the previous analysis are confirmed, but the criteria for selecting YSO candidates had to be revised to select only bright objects, in order to limit the contamination of the sample by Post-MS stars. ...

... These observations are a precursor to a large scale, extragalactic, Zone of Avoidance (ZOA) survey with the Arecibo L-band Feed Array (ALFA). ... Full survey observations, which will begin in 2007, will reveal local large scale structure in a part of the extragalactic sky that is relatively unexplored due to the obscuration of optical light by dust in our Galaxy. ... Figure 3 Spectrum of a previously unknown galaxy from the precursor observations. Figure 4 HI Image of the galaxy from Figure 3. ...

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... What is a pulsar? ... Group . ... Parkes Pulsar Observing Wiki . ... Pulsar Groups . ... Main / . Dr George Hobbs . ... Dr Richard Manchester . ... Natasa Vranesevic, USyd (supervised by R. Manchester, D. Melrose) (2002 -) . ... Daniel Yardley, USyd (supervised by G. Hobbs, B. Gaensler) (2007 -) . ...

Next: Radiopulsars as Sources of Up: Cosmic Rays and Evolution Previous: Cosmic Rays and Evolution . Presently, there is little doubt that galactic CR can be generated at rapidly expanding shock fronts produced by supernova explosions. ... Statistical properties of radiopulsars in our Galaxy indicate a formation rate of NS of about 1 per 10-20 years in the present cosmological epoch, while direct astronomical observations have so far not detected supernova explosions at this high rate. ...

Nuffield Research Placements offer up to 1000 funded places a year, so that students across the UK can get an insight into the world of scientific research. The Nuffield Foundation offers bursaries to first year post-16 science students in England, Northern Ireland, Wales and Scotland, helping students to take part in science based projects, lasting 4-6 weeks, in universities, industry or research institutions during the summer holidays. ... 2012 James Murphy : (pdf) . ... 2007 Emma Riley: (ppt) . ...

Next: On-Line Catalog Information Up: The Second EGRET Catalog Previous: Discussion . ... The 91 sources with include the LMC, 40 sources identified with active galactic nuclei (AGN) with high confidence, 11 sources which may be AGN, and 39 unidentified sources. 31 sources reported in the first EGRET catalog do not appear in this catalog. 5 of these are sources which were identified with AGN; all 5 of these now have statistical significance just below the threshold for the present catalog. ...

Next: Discussion Up: Other Stars Previous: Stars with Less . While periods were detected on 59 of 105 stars monitored only 12, ten in Orion OB1a and OB1b plus TAP 26 and P1724, had detections with FAP's below 1%. This seems consistent with results from the Van Vleck Observatory. ... The Van Vleck Observatory has reported periods for 75 stars (Choi & Herbst 1996) and variability has been seen in 186 stars (Attridge & Herbst 1992) over four years. ... Thu Dec 5 13:29:36 EST 1996 ...

... Bojan Nikolic web pages (r. 329) . ALMA . We present a framework for modelling atmospheric phase errors and their correction by both the fast-switching and water vapour radiometeric techniques. ... We use this framework to simulate relative point source sensitivity and effective resolution for a range of atmospheric conditions, with and without phase correction. ... Published as ALMA Memo #582. ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ...

... We show the analysis of low-hard and intermediate states of sources XTE J1550-564, H 1743-322, GX 339-4, XTE J1859-226, XTE J1650-500 and GRS 1915+105. ... Directly applying the scaling technique we also obtain that a ratio of the BH masses in XTE J1859-226 and in XTE J1550-564 is , and the corresponding ratio for XTE J1650-500 and XTE J1550-564 is . These values of scaling factors r implies that BH masses are ; solar masses in XTE J1859-226 and XTE J1650-500 respectively. ...

... We present preliminary results from two programs to image the host galaxies of radio-quiet quasars in 1.6 micron light using NICMOS camera 2 on HST. The high redshift program consists of QSOs covering the redshift range 0.8 < z < 4.4 and a range of QSO luminosities. Of the six objects for which data have been obtained the results range from no host galaxy detected, to an obvious galaxy with an interacting companion, to a possible high redshift galaxy cluster. ...

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Next Previous Contents . ... There are filesystems on disk partitions and other devices, and there is the filesystem as it is presented to you by a running Linux system. In Linux, you ``mount'' a disk filesystem onto the system's filesystem. ... A filesystem imposes some structure on this, and makes it look like files within directories within directories.. ... If the power cuts out at this point, the filesystem will be broken. ... Usually, the kernel mounts its root file system read-only. ...

Peremennye Zvezdy ( Variable Stars ) 28 , No. ... Received 15 November 2007; accepted 21 February 2008. ... Multi-night CCD observations of the previously unknown variable GSC 02805-00766 reveal its nature as a contact binary. We present its light elements and light curve. ... It was monitored by S. Kleidis in autumn/winter 2006 and autumn 2007 for fifteen nights. ... Fig. ... The phased light curves in both filters are given in Fig. 1 and Fig. 2, they are typical for W UMa systems. ...

... CTI . ... The table is used/accessed by: CAL_ctiCorrect() Generic CTI correction algorithm: . ... The table is used/accessed by: CAL_pnCtiCorrect() Main table to drive the high-accuracy EPN CTI correction algorithm in calpnalgo; Contains four sets of parameters per CCD column; numbers come from hardware group at MPE . ... The table is used/accessed by: CAL_pnAdditionalGainCtiCorrect() Holds single scalar offset values used by EPN gain correction in calpnalgo . ... The table is used/accessed by: TBD....

... Unlike the previous digital-only Messages, Arecibo-1974 and Evpatoria-1999, the TAM has complex, three-section structure with different forms of information. Section 1 represents coherent sounding radio signal with slow Doppler wavelength tuning to imitate transmission from Sun's center. ... Section 2 is an analog information and represents musical melodies, performed on the Theremin. ... There were seven musical compositions in the 1st Theremin Concert for Aliens. ...

... Hughes STX/COSSC NASA/GSFC, Greenbelt, MD 20771 . ... The exploration of hypertextual data presentation at the COSSC was facilitated by the creation of tables of data, in electronic form, which describe the BATSE and EGRET datasets available in the Compton Observatory archive. ... As our store of data continues to grow, we will continue to explore new and novel ways in which hypertext allows the data in the COSSC archive to be presented and selected. 56 kB PostScript reprint . ...

... Kepler stars and planets are bigger than previously thought . ... In a new study using the National Optical Astronomy Observatory s (NOAO) Kitt Peak National Observatory Mayall 4-meter telescope, observations of a large sample of stars with candidate planets identified by the NASA Kepler mission have revealed that many of the stars, and hence their planets, are actually somewhat larger than originally thought. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

Next: Sample Properties Up: Sample Identification Previous: Comments on Individual Sources . Previously known serendipitous sources were selected by cross-correlating WGACAT with a variety of optical and radio catalogs, including the Ver?n-Cetty & Ver?n (1996) and Hewitt & Burbidge (1993) quasar catalogs, the 1 Jy (Stickel et al. 1994) and S4 (Stickel & K?hr 1994) radio catalogs, and the BL Lac catalog of Padovani & Giommi (1995b). ... Details of these 97 objects are given in Table 6. ...