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. ...

... Introduction In a proposal funded by the ATNF, the University of Queensland and the Uni- versity of Bonn, the ATNF has now developed a narrow-band back-end system for the Parkes Multi-Beam system. The project has provided a narrow-band back-end lter and correlation- system able to use the inner 7-beams of the multi-beam system for observations of spectral lines over 2048 channels with a total bandwidth across each spectrum of either 4 or 8 MHz. ...

Peremennye Zvezdy", . ... Min . ... 2MASS J16480306-6715178 . ... The variable star catalogued as ASAS 164802 6715.2 by Pojmanski (2002) was found to display two types of eclipsing variability by Pilecki and Szczygiel (2007). ... The comparison stars (identified in the finding chart) used were: . ... The data for Star A and B has been obtained using Comp Star 2 between HJD 2455709.956 and 2455710.089 and between 2455718.005 and 2455718.096. All other data was obtained using Comp Star 1. ...

... The Si VIII line width measurements and N e estimates based on SUMER observations are combined with LASCO and UVCS output to provide an overview of its variations with height above a polar coronal hole. ... Combining the Si VIII half width at 1/e of the peak intensity with the UVCS O VI half width, we find a small increase of the half width from 1 to 1.2 , then a plateau until 1.5 , thereafter a sharp increase until 2 , finally a more gradual increase reaching 550 km s -1 at 3.5 . ...

... It is notoriously difficult to identify weak cosmic ray events in long exposure observations. ... The method is to compare the probability distribution function (PDF) of cosmic ray events between an observation and a dark frame matched in exposure time. We illustrate the basic idea using dark exposures from a Tek 1024 1024 CCD with varying exposure lengths and read-out times. ... Figure: Histogram of cosmic ray events in a two hour dark frame. ... Original PostScript figure (78 kB) . ...

Marc White . ... Turbulent entrainment processes may play an important role in the outflows from young stellar objects at all stages of their evolution. In particular, lateral entrainment of ambient material by high-velocity, well-collimated protostellar jets may be the cause of the multiple emission-line velocity components observed in the microjet-scale outflows driven by classical T Tauri stars. ... University of Amsterdam; STARPLAN, Copenhagen, Jul 2013 . ... E marc.white@anu.edu.au . ...

... Research . ... Ljubljana Univ., ... Zagreb Univ., ... Asiago Observatory, Italy . ... ESO, Germany . ... I am an associate astronomer at the European Southern Observatory (ESO). I divide my work between the scientific research and management of the ESO's User Support Department (USD), which is in charge of providing support to observers who use ESO's Paranal Observatory facilities . ... A final standard disclaimer: the opinions expressed in this site do not reflect in any way the opinions of ESO. ...

... 640W A survey of ultracompact (UC) Hii regions has been carried out by searching for 6.669-GHz methanol maser emission from a sample of 535 IRAS-selected candidates. A total of 201 candidates exhibit methanol emission. These sources have been used, in conjunction with previously identified UC Hii regions, to provide a base for further studies of such regions. ... Methanol maser and/or radio continuum emission is found in 364 cases towards IRAS-selected regions. ...

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NASA's Chandra X-ray Observatory (n e AXAF), was launched in July 1999. The Chandra Multiwavelength Project (ChaMP) described here combines radio to X-ray observations of serendipitous Chandra sources, with an optical survey as its backbone, to provide a uniform multiwavelength database to the community. ... Here we describe the ChaMP, with emphasis on optical imaging followup, reaching V ~ 25. ... what fraction missed in soft X-ray and optical surveys due to obscuration? ... Science Goals | ...

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 . ...

... Imaging spectrometer for atmosphere and ionosphere spectral investigation consist the static Michelson interferometer and CCD camera. The prototype of the onboard CCD camera for the spectrometer used the Toshiba 2048 pixels CCD linear array (TCD 1201D) with FPGA-based controller. The controller is building on ACTEL A1020A field programmable gates array with maximum data rate 40 MHz and can be used with linear and area array CCD. ... Toshiba CCD Linear Image Sensor Data Book, 1997. ...