... Programme . ... Abstract: Planetary nebulae constitute a unique source of light element abundances for individual stars in a distant stellar population. Multi-slit spectra of 50 planetary nebulae (PN) in NGC 5128 have been observed with the ESO VLT and FORS1 spectrometer. The planetary nebulae were observed in three fields covering a range of galactic radii from 2 to 19 kpc. The emission line spectra have been analysed for light element abundances (He, O, N, Ne, S, Ar). ...

... In reducing some FORS2 MXU spectra, we are using a star which was observed in MOS mode to flux-calibrate the spectra. For chip1, everything is ok, but chip 2 fails. ... Observing with ESO Telescopes . ... ESO-MIDAS . ... In the MOS observations on the standard star, the standard is located on chip 1. Therefore the chip 1 data has to be used to determine the spectral response function for both chips, so you will have to use the chip 1 data for input, even when reducing the chip 2 data. ...

... We present the fifth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies (HSS therein, SAO - Special Astrophysical Observatory, Russia). ... The data of this snap-shot spectroscopy survey confirmed 166 emission-line objects out of 209 observed candidates and allowed their quantitative spectral classification and redshift determination. ... For the remaining 30 previously known ELGs we give either improved data of the line intensities or some independent measurements. ... Galaxies ...

... A DISTANCE LIMITED SAMPLE OF WOLF-RAYET STARS } \author{Claus Leitherer\\ \\ Space Telescope Science Institute,\thanks{Operated by AURA for NASA under contract NAS5-26555} 3700 San Martin Drive, Baltimore, MD 21218\\ \\ e-mail: leitherer@stsci.edu\\ \and Jessica M.\ Chapman\\ \\ Anglo-Australian Observatory, P.O.\ Box 296, Epping, NSW 2121, Australia \\ \\ and\\ \\ Australia Telescope National Facility, P.O.\ Box 76, Epping, NSW 2121, ... We derive mass-loss rates for the thermal sources. ...

... We study the variation of the line width and electron density as a function of height above two coronal holes from forbidden spectral lines of Si VIII. The spectra were obtained with the Solar Ultraviolet Measurements of Emitted Radiation spectrometer flown on the Solar and Heliospheric Observatory spacecraft. ... The electron density shows a decrease from 1.1 10 8 cm -3 to 1.6 10 7 cm -3 over the same distance. ...

... 2000; Persi et al. 2000). One of these stars (Cha Halpha1) is a bona-fide brown dwarf, with mass 0.04-0.05 Msun. ... This result provides a first indication that the formation mechanism of T Tauri stars (via core contraction and formation of an accretion disk) extends to objects in the brown dwarf mass range. ...

Emission Line Diagnostics in a ``No UV Bump'' Quasar PHL909 Smita Mathur, Belinda Wilkes, Martin Elvis and Jonathan McDowell Abstract PHL909 is a quasar with unusually low ultraviolet luminosity (blue bump strength C UV=IR = \Gamma0:20 compared to an average value of 0:4 (McDowell et al. ... The intrinsic continuum of PHL909 ( i.e. as seen by the BELR ) may thus be similar to the `standard' continuum, with a big blue bump, reddened along the line of sight. ...

... Data of obs. ... Reduced (Paper I) . NGC 0023 . VIII.1998 . ... NGC 0132 . ... Reduced . NGC 0157 . ... NGC 0615 . ... NGC 0753 . ... NGC 0945 . ... Bad data (clouds); . NGC 0972 . ... II.1998 . ... NGC 1024 . ... NGC 1058 . ... NGC 1073 . ... NGC 1084 . ... NGC 1134 . ... NGC 1637 . ... NGC 2276 . ... NGC 2608 . ... NGC 2964 . ... NGC 3184 . ... Bad data (low S/N) . NGC 3338 . ... Bad data (IFP failure) . NGC 3344 . ... Reduced (bad data) . ... Back to Project Vortex. ...

... Field dependent thermal conductivity of Tl 2 Ba 2 CuO 6 : evidence for Andreev scattering of quasiparticles. Abstract: . We have studied the thermal conductivity of Tl 2 Ba 2 CuO 6 (Tl-2201) crystals as functions of temperature and magnetic field. A thermal conductivity peak is observed near 0.6 T c which is greatly reduced on application of a magnetic field along the c axis. ... A model based on Andreev reflection by vortex screening currents is shown to be consistent with these results. ...

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...