Evidence for a 3 x 10^8 solar mass black hole in NGC 7052 from HST observations of the nuclear gas disk . ... We present a Hubble Space Telescope (HST) study of the nuclear region of the E4 radio galaxy NGC 7052, which has a nuclear disk of dust and gas. ... NGC 7052 can be added to the list of active galaxies for which HST spectra of a nuclear gas disk provide evidence for the presence of a central black hole. ...

... December 21, 1997 . ... Advantages are briefly discussed of gaining in spectral resolution, which is accompanied by losses in signal level, as compared with the attempts to improve the accuracy of measurement of line parameters by means of rising the S/N ratio alone with increasing the exposure time. To partially solve the problem of observations of faint objects at the BTA a new design echelle spectrometer is proposed. high resolution spectroscopy . ...

CATS home ] [ Back to CATS list ] [ ftp ] . ... See also MRC 1Jy sample I. and MRC 1Jy sample III. Received 1998 February 5; accepted 1998 May 1 0.5 and linear size l ~20 kpc (for H0 = 50 km s-1 Mpc-1; q0 = 0.5). ... SUMMARY * ACKNOWLEDGMENTS * REFERENCES * FIGURES * TABLES * REFERENCES TO THIS ARTICLE FOOTNOTES 1 National Centre for Radio Astrophysics, TIFR, Pune University Campus, Ganeshkhind, Pune-411007, India; vijay@ncra.tifr.res.in, ramana@ncra.tifr.res.in, crs@ncra.tifr.res.in. ...

... 238, Astronomical Data Analysis Software and Systems X, eds. F. R. Harnden, Jr., ... We present here ASTROVIRTEL : a project supported by the European Commission within the ``Enhanced Access to Research Infrastructures'' action. ASTROVIRTEL is already being used by European astronomers as a Virtual Telescope, enabling them to access a huge amount of astronomical data with the support of the ASTROVIRTEL personnel. ... The ASTROVIRTEL Cycle I Call-for-Proposal deadline was June 15, 2000. ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... We have generated high resolution maps by using standard spherical harmonics expansion for the CMB fluctuations and by extrapolating available full sky maps to predict the Galaxy emission at frequencies and angular scales appropriate to the PLANCK space mission. ... Beam responses are typically not symmetric when they are coupled to a telescope to reach high resolutions, whereas theoretical predictions and standard deconvolution methods generally assume pure symmetric beams. ... PPEUC Proceedings . ...

Next: Observations and Data Reduction Up: Coronal Hole Diagnostics out Previous: Coronal Hole Diagnostics out . ... Line width variations combined with simultaneous electron density estimates, provides a very powerful diagnostic for the solar corona. ... They find that for distances of a few arc seconds outside the solar limb, the average line of sight electron densities in the coronal holes are about a factor of 2 lower than in quiet sun regions. ... The Western limb data showed a similar trend. ...

... About ATNF overview . News | ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Publications overview . ... Careers overview . ... Parkes radio telescope . Australia Telescope Compact Array . ... New, high resolution observations of the HI emission line and 20-cm continuum at the Australia Telescope Compact Array (ATCA) for the prototype polar ring galaxy NGCб 4650A are presented. ...

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Peremennye Zvezdy ( Variable Stars ) 33 , No. ... The new variable star HD 305629, with a Cepheid-like light curve, is demonstrated, from our optical observations and ASAS-3 data, to actually be an ellipsoidal variable star on a highly eccentric orbit. ... During a systematic search of variable stars in the publicly available ASAS-3 database (Pojmanski 2002), apparent variability was found in the star HD 305629 (10 51 34 35, -60 47 57 4, J2000.0; Fig. ... The light curve and color curves of HD 305629. ...

Next: NICMOS Science Up: NICMOS Data Calibration and Previous: NICMOS Software at the . ... Reference File Tools . Image Analysis and Reduction . ... These include the tasks used in the STScI pipeline, tools to generate the reference files used by the calibration pipeline tasks, and general image analysis, manipulation, and arithmetic tasks. ... Calnica is used to apply instrumental calibrations to individual datasets, while calnicb is used to process associated sets of NICMOS images. ...

Close binary systems of the RS CVn and Algol type are characterized by a highly variable radio emission, from typical flux densities of a few mJy during low-activity (quiescent) periods, up to 1 Jy during strong flares. The origin of this radio emission is attributed to the gyrosynchrotron mechanism. Several observations of these stars have shown an evolution of the radio spectrum during both the rising and decay phases of flares. ...

... David P. Stern Laboratory for Extraterrestrial Physics NASA . ... Early Work on Geomagnetism . ... Polar Magnetic Storms . ... This review traces early research on the Earth's magnetic environment, covering the period when only ground-based observations were possible. ... This is an account of early research on the Earth's distant magnetic environment, work that led to magnetospheric physics and to space plasma physics. ...

... David P. Stern Laboratory for Extraterrestrial Physics NASA . ... Early Work on Geomagnetism . ... Polar Magnetic Storms . ... This review traces early research on the Earth's magnetic environment, covering the period when only ground-based observations were possible. ... This is an account of early research on the Earth's distant magnetic environment, work that led to magnetospheric physics and to space plasma physics. ...

On combined processing of different space geodetic observations . ... A software for combined processing of different space geodetic observations is developed along with the work on the co-location of various observational techniques at the observatories of Quasar VLBI network. ... Various aspects of the combined processing of different types of space geodetic observations are also discussed. ... space geodetic observations, combined processing, normal equations, software package, SINEX-format. ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: ALMACAL: the evolution of the molecular gas in galaxies using ALMA calibrator observations . ... ALMA . ... ESO-MIDAS . ... It is therefore essential to probe the evolution of cold gas over cosmic time. ... We are looking for an enthusiastic PhD student who is interested in working with us in using ALMACAL to address exciting and topical science questions related to the evolution of molecular gas in galaxies. ...

. XMM-Newton Science Analysis System . omsrclistcomb (omsrclistcomb-2.3) [xmmsas_20060628_1801-7.0.0] . Meta Index . Combines OSW source list into an observation source list . Instruments/Modes . Use . Description . Instrumental Magnitudes and Colours . Standard Magnitudes and Colours . Astrometric correction . General source table layout . Comments on Individual Table Columns . Parameters . Errors . Input Files . Output Files . Algorithm . Bibliography . Index . XMM-Newton SOC/SSC -- 2006-06-28

... in PDF format . ... 316, P 279-286 (1996). ... 316, P 287-295 (1996). ... 316, P 296-303 (1996). ... 316, P 304-312 (1996). ... 316, P 313-322 (1996). ... 316, P 323-332 (1996). ... 316, P 333-341 (1996). ... 316, P 342-345 (1996). ... 316, P 346-349 (1996). ... 316, P 350-354 (1996). ... 316, P 355-367 (1996). ... 316, P 368-373 (1996). ... 316, P 374-383 (1996). ... 316, P 384-395 (1996). ... 316, P 396-405 (1996). ... 316, P 406-412 (1996). ... 316, P 413-424 (1996). ... helpdesk@link.springer.de...

Find Similar Abstracts . ... 26, Jan. 1983, p. 77-83. ... CAUSTICS (OPTICS), COSMOLOGY, PARTICLE MOTION, GEOMETRICAL OPTICS, GRAVITATIONAL EFFECTS, UNIVERSE . ... The analogy between caustics in geometrical optics and the singularities that arise in irrotational flows in a cold collisionless medium is discussed. ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... Telescopes . ... The time requests are accepted in an electronic version with on-line form in Russian or English. ... Unregistered request will be disregarded by the Large Telescopes Programm Committee. In exclusive cases the secreatry of the Committee is entitled to accept an observational time request given permission of the Chairman of the Committee or the director of the SAO RAS. The Program Committee considers generally one time request submitted by the principal applicant. ...