... SNe Atlas . ... Charts . ... On supernovae physics.. ... Photographic atlases of galaxies.. ... The Color Atlas of Galaxies by James D. Wray; 1988; Cambridge University Press, The Pitt Building, Trumpington St. Cambridge, CB2 1RP, UK; a CCD color atlas of galaxies bny a professional astronomer using telescopes at McDonald Observatories and Las Campanas. some 600 images of galaxies with excellent resolution of the nuclear regions. ... Great for deep sky work or CCD hunting with a large telescope. ...

It is a matter of common knowledge that in processes of genesis and evolution of many solar phenomena participate magnetic fields of sunspots. ... As a basis for formation of the database we take data on magnetic fields, collected by set of observatories during many years of observations. ... Section "Magnetic field data" contains data of magnetic field observation for separate sunspots, presented in standard text format (ASCII). ... Description of structure of these files is presented here . ...

... We have compiled the Catalogue of extragalactic supernovae using the GCVS card catalogue. ... Doubtful (?), or rejected (-) SN 8 A1 --- RemFlag [*] The '*' indicates a remark in sn_rem.dat 10- 19 A10 --- Gal Parent galaxy designation 21- 22 I2 h RAh Right Ascension 1950 of Parent galaxy 23- 24 I2 min RAm Right Ascension 1950 (minutes) 25- 28 F4.1 s RAs Right Ascension 1950 (seconds) 29 A1 --- DE- Declination 1950 (sign) 30- 31 I2 deg DEd Declination 1950 of Parent ...

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... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... Contacts . 2012: . ... We refined the fundamental parameters of the components, the orbital periods, and the conditions of photospheric heating of the secondary component by the ultraviolet radiation of the hot component. ... The observations of the star clusters associated with ultra-luminous x-ray sources (ULXs) in four galaxies on the 6-meter and VLT telescopes have shown that all the ULXs are located within 200pc of very young star clusters (younger than 5 million years). ... Archive . ...

RTT150 . ... HEAD IKI . This page is a search interface through RTT150 observationsdatabase which is stored at IKI. According to the agreement between participantsof RTT150 project, observational data fully belong to the institution which hascarried out this observation for one year, are available to all three partiesinvolved (IKI, KSU and TUG) during the second year and become freely accessibleto the whole astronomical community starting two years after observation date. ...

... The operators will be explained as they are used. The general notion to keep in mind is that any combination of these operators results in a 2- D affine coordinate transformation in the TF plane, which may be represented using the homogeneous coordinates often used in computer graphicsfoley. ... S _t_c,f_c = g_t_c,f_c,(_t) | ... We denote a time shift to the position , with an operator that has a multiplicative law of composition : (Table 1). ... Note that these two operators do not commute. ...

... BDR FAX: (303) 497-6513 ------------------------------------------------------------------------------- SELECTED GEOMAGNETIC AND SOLAR ACTIVITY INDICES ------------------------------------------------------------------------------- WORLDWIDE INDICES -------------------------------------------------------------- The subscript p means planetary and designates a global magnetic activity in- dex ... 13-14 I2 Kp or PLANETARY 3-HOUR RANGE INDEX for 0000 - 0300 UT. ...

... Abstract (Concise summary of the proposal) WSRT observations of two of the dimmest, HI-selected dwarf galaxies SS47 and SS73 will provide reliable coordinates, as well as a rst look at their sizes and kinematical structure. ... Total number of hours requested this semester, including calibration: 26 6. ... To address the nature of these objects, we are studying three extreme examples (see Fig. 1) of tiny HI-selected objects from an Arecibo blind 21cm survey by Spitzak and Schneider 1998. ...

. The Planck all-sky map at submillimeter wavelengths (545 GHz). The band running through the middle corresponds to dust in our Milky Way Galaxy. The black dots indicate the location of the proto-cluster candidates identified by Planck and subsequently observed by Herschel. The inset images showcase some of the observations made by Herschel s SPIRE instrument; the contours represent the density of galaxies. ESA and the Planck Collaboration/ H. Dole, D. Guц©ry G. Hurier, IAS/University Paris-Sud/CNRS/CNES

... In order to compare the number of different evolutionary stages obtained and X-ray luminosity of the chosen X-ray sources with the observed galactic values we use the sum of C/O+O/C , where C and O are the calculated and observed values of a given binary type, respectively. If we make comparison for a number of different binary species (for example, we compare the number of CV, number of X-ray pulsars,   total X-ray luminosity of LMXB, etc.), we write this criterion in the form: . ...

... We thank the Swift team for their rapid scheduling of this observation. ... 2455705.20851 V 14.15 0.03 2455707.83079 V 14.10 0.03 2455710.84028 V 13.53 0.02 2455713.64631 V 13.66 0.02 2455714.65479 V 14.11 0.03 2455714.71823 V 14.12 0.02 2455714.78596 V 14.20 0.02 2455717.39593 V 14.37 0.03 2455726.62861 V 14.83 0.04 2455727.16343 V 14.57 0.04 2455730.50586 V 14.57 0.03 2455730.57329 V 14.56 0.03 2455730.70360 V 14.66 0.04 2455738.32865 V 14.00 0.02 2455742.86146 V 14.21 ...

... From the uvby photometry and proper motions for about 5500 nearby F stars we have found the following: (i) F stars , taken in narrow ranges of metallicity , show at [fe/H] 0 rather distinct cut-off in their distribution along the Main Sequence (MS) at the blue side, which is suggested to be an indication for the MS turn-off in stellar groups of fixed metallicity ; (ii) the corresponding turn-off age from theoretical isohrones strongly correlates with the ...

Next: HST-NICMOS Observations of Galactic Up: NICMOS Science Previous: A Color Analysis of . ... Why choose NGC 1569? ... NICMOS Data in the Central Region of NGC 1569 . ... To have a census of the old stellar populations of the dwarf irregular galaxies NGC 1569 and NGC 1705 and to trace the major episodes of star formation over a Hubble time in these starbursting systems, we have applied for and obtained HST/NICMOS observations in the F110W and F160W bands with the NIC2 camera. ...

... Coordinate system . It is necessary to specify the coordinate system for the drilling of plug-plates so that the drilling file (currently named plPlugMap), plate drilling, cartridge, rotator wrap and the rotator itself are compatible. ... The TCC rotator angle (object system) is defined to be 0 degrees for this orientation. ... Thus, the rotator angle gives the conventional astronomical position angle on the sky of the y axis (although Russell won't acknowledge this necessarily). ...

Next: 3.2. ... The Results. ... Figure 3: Colour-Magnitude diagram for 337 stars in NGC 6789. ... The CM diagrams of regions C,E and F (see Fig. 1 b ) are shown in Fig. 3 , where stars from region C are denoted by open circles, ones from the E are filled diamonds and stars from the region F are shown by dots. ... 3.2 . ... Most of the bright stars (I The diagram shown in Fig. 3 have not been corrected for interstellar extinction. ...

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

... Laboratory . ... webmaster@izmiran.ru . ... e-mail: karp@izmiran.ru . ... DEPENDENCE OF THE MIT SHAPE ON SOLAR ACTIVITY . ... The period considered was characterized by low solar activity (F 10.7 = 70) and increased magnetic activity. ... It follows from data shown in Fig. 9 and obtained by Deminov and Karpachev [1988] for high solar activity that (NmF2) ~ 2x10 4 and 4x10 4 cm -3 for near-midnight hours during local winter at F 10.7 ~ 70 and 200, respectively. ... C) 2007, IZMIRAN ...