Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

Еще в разделе: (Показать все результаты (>113) - ip.rsu.ru/ )

... Abstract . ... HST Imaging of UV emission in Quiescent Early-type Galaxies . ... UV Imaging to Determine the Location of Residual Star Formation in Galaxies Recently Arrived on the Red Sequence . ... GO 11175: UV Imaging to Determine the Location of Residual Star Formation in Galaxies Recently Arrived on the Red Sequence . ... This level of accuracy allows us to obtain reliable distances and luminosities for main sequence stars, subgiants, red giants and even a number of metal poor subdwarfs. ...

Еще в разделе: (Показать все результаты (>14357) - www.stsci.edu/ )

• HST this week: 068
• HST this week: 259
• HST this week: 110

Next: ZGSC (Compressed GSC) and XSKYMAP . ... This is a preliminary report on an investigation of the quality and properties of plates digitized during creation of the Guide Star Catalog (GSC). The results will be vital for reclassifying GSC objects. ... Many objects are measured on more than one plate, and thus have multiple catalog entries. ... Among the shortcomings of the GSC are: biased magnitudes and incorrect classifications for certain objects, presence of artifact objects. ...

Еще в разделе: (Показать все результаты (>1850) - www.adass.org/ )

• Calculating the Position and Velocity Components of HST
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• A Technique for Determining Proper Motions from Schmidt Plate Scans at ST ScI

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Introduction.. ... Combining measurements of the thermal Sunyaev--Zel'dovich effect with X-ray data allows calculation of a direct, physical estimate of Hubble's Constant ( ) without the need for distance-ladder-type arguments. ... 1 Introduction . ... 3 Calculating Hubble's Constant . 4 Errors In Determination of . ... PPEUC Proceedings . Fri Jun 27 15:29:33 BST 1997 ...

Еще в разделе: (Показать все результаты (>1760) - www.mrao.cam.ac.uk/ )

• Determination of the relative orientation between radio and dynamical reference
• Inference of Coefficients for Use in Phase Correction Bojan Nikolic web pages
• The history of star formation and mass assembly in early-type galaxies

We investigate models for main-sequence and horizontal-branch (HB) stars constructed using the Carson opacities and make comparisons with models based on the Cox-Stewart opacities. ... The drop in the hydrogen-shell luminosity due to the helium-core expansion during HB evolution is greater than that obtained with the Cox-Stewart opacities. ... Studies of main-sequence (MS) stars lead to agreement with Stothers' (1974a,b, 1976) results for homogeneous models constructed with Carson opacities. ...

Еще в разделе: (Показать все результаты (>2099) - star.arm.ac.uk/ )

• Abstract
• Armagh Observatory
• Abstract 206

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

Еще в разделе: (Показать все результаты (>719) - www.astrosociety.org/ )

• ASP: Determining the Earth-Sun Distance Using Mars

Find Similar Abstracts . ... Determination of the component masses and inclination of a binary system containing a pulsar from relativistic effects . ... BINARY STARS, ORBITAL ELEMENTS, PULSARS, RELATIVISTIC EFFECTS, STELLAR MASS, APSIDES, DOPPLER EFFECT, FREQUENCY SHIFT, INCLINATION . ... 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 ...

Еще в разделе: (Показать все результаты (>700) - xray.sai.msu.ru/ )

• No Title
• Be/X-ray binaries and candidates

Large Magellanic Cloud Distance from Cepheid Variables using Least Square Solutions Choong Ngeow (UIUC) & Shashi Kanbur (SUNY Oswego) ABSTRACT: We determine the LMC distance using Cepheid variables in the LMC. ... The least squares take the form: #0, if G05 m = % $µ + a + b log( P ), % = " !1, if OGLE · Recent studies have suggested the LMC Cepheid P-L relation is nonlinear (Kanbur & Ngeow 2004,2006; Sandage et al 2004). We also adopt a "broken" P-L relation with a break period at 10 days. ...

Еще в разделе: (Показать все результаты (>10017) - www.atnf.csiro.au/ )

• IAU SYMPOSIUM 216 - abstracts
• Programme - Abstract
• Ionized Hydrogen at Large Galactocentric Distances

Magnification (Power) And Using Eyepieces . ... To determine power in a telescope, divide the focal length of the telescope by the focal length of the eyepiece. By exchanging an eyepiece of one focal length for another, you can increase or decrease the power of the telescope. For example, a 25mm eyepiece used on a telescope with a 1000mm focal length would yield a power of 40x (1000 / 25 = 40) and a 10mm eyepiece used on the same telescope would yield a power of 100x (1000 / 10 = 100). ...

Еще в разделе: (Показать все результаты (>260) - www.astronomy.net/ )

• Astronomy Terms - To Help You Study The Universe - an Astronomy Net Article

Trudy GAISH, vol. LXV, 1996 . Abstracts . The global distribution of average (5 O x 5 O ) depths . of Mohorovicic discontinuity on the Earth . ... Such analysis allows detecting whether the sources of the largest anomalies reside within the Earth's core. This is possible if the limit depths of the sources exceed the depths of the core-mantle boundary. ... by Pasinok S.L. Influence of the Earth’s cover on the polar free oscillation of the Earth’s inner core is considered. ...

Еще в разделе: (Показать все результаты (>431) - lnfm1.sai.msu.ru/ )

• Data bases of Natural Satellites. Documentation. Structure

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...

Еще в разделе: (Показать все результаты (>111) - selena.sai.msu.ru/ )

• http://selena.sai.msu.ru/Ber/Publications/ms40/88_Yamashita%20et_al.pdf
• Vladimir V. Busarev
• Шевченко Владислав Владимирович

Problem Set 2 - Cosmology­A3002 ­Due on or before November 7th. Can be sent via internal mail (Brian Schmidt, RSAA) use H0=70 km/s/Mpc, M=0.27, =0.73, w=-1 for all problems. ... Finish off your Monte Carlo simulation by selecting objects at random redshifts from 0<z<0.1, assuming that they have a mean absolute magnitude of M=-19.5 with a dispersion 0.2 magnitudes. ... Problem 2.1 (2 pt): In class we described the scale at which material can collapse in the Universe as the Jeans' length. ...

Еще в разделе: (Показать все результаты (>547) - www.mso.anu.edu.au/ )

• http://www.mso.anu.edu.au/~brian/A3002/probset2.pdf