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The observations of the Nova in the outburst were carried out in four nights on 2005 Jan 14-17 at 1-m Zeiss-1000 of the Special Astrophysical Observatory of the Russian Academy of Sciences with CCD EEV 42-40 in V band. ... The ephemeris given for the exterior conjunction of the secondary star is the following: MinI =2451868.8101 +0.16993393*E. Figure 1 is a plot of V band photometry in the outburst, and Figure 2 is this one of Rc band for quiet state. Figure 1. Outburst light curves. ...

... Telescopes, instruments and cameras are keenly affected by local weather and atmospheric conditions. The decision to open any telescope or have access to any instrument or camera is at the sole discretion of the on-duty observing specialist(s) at the time of your requested access. ... Specific parameters exist for access to APO telescopes, instruments, or cameras which protect our highly-sophisticated and sensitive equipment and provide safe work conditions for staff and visitors. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

Next: INTERFEROMETRYFIT Up: Fit routines Previous: Fit routines Contents . This widget handles initial single orbit fits to improve the apparent ellipse or orbit as determined by the E LLIPSE and O RBIT utilities in the O RBIT P LOT widget. The procedure is as follows: the user defines an ellipse first, then fits the apparent ellipse to the binary positions using A STROMETRY E LLIPSE . ...

A. Singh Institute of Mathematical Sciences, C.I.T. Chennai, India anupamk18@gmail.com Real elements in algebraic groups Let G be an algebraic group defined over a field k . ... Let G be a connected semisimple algebraic group of adjoint type defined over a perfect field k . ... It follows that if G is connected semisimple of adjoint type, with -1 in its Weyl group, then every semisimple element in G(k ) is strongly real in G(k ). This also shows that any regular element in such a group is real. ...

... Classes . ... gTime Class Reference . This class implements time calculations. ... gTime (double ai_jDays=0) . ... gTime (const gTime &timeSrc) . ... Set the time value of the time object to the julian day of year, day. ... operator= (const gTime &timeSrc) . ... Returns the time GMT value in Julian days. ... Returns the time_t value of the gTime Object. ... Returns a gTime object setted with the actual machine time. ... gTime Object assigned with real machine time. double gTime::getGmtTm . ...

... NGC 1569: Heavy Elements from a Small Galaxy . ... Still, heavy elements can profoundly influence galaxy and star formation ... not to mention the formation of planets and people. ... Open Cluster NGC 6520 from CFHT . ... For the open cluster of stars NGC 6520, every day is like this. ... Nearby Spiral Galaxy NGC 4945 . ... Sunspot Region 30 . ... Star-Forming Region RCW38 from 2MASS . ... Looking at the star forming region RCW38 will not normally reveal most of the stars in this cluster. ...

Subject of Celestial Mechanics. ... Differential Absolute Coordinates Equations of the Problem. ... General Integral of Non-Perturbed Motion. ... General Equation of Non-Perturbed Orbit. ... Other Integration Methods of Non-Perturbed Motion Differential Equations; Bine Equation for Case of Non-Perturbed Motion. ... Ellipsical Motion, Kepler Equation. ... Motion Differential Equations in Absolute Coordinates. ... Equation of System of Bodies Motion in Barycentric Coordinates, in Relative Coordinates. ...

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

We present an abundance analysis of light elements in the most massive chemically peculiar (CP) stars, He-rich stars. The analysis is based on both low and high-resolution observations collected at ESO, La Silla, Chile in the optical region and includes 6 standard and 21 He-rich stars. Light element abundances display a diverse pattern from under-solar up to above-solar values. ...