... Meta Index / Home Page / Some functions for testing/debugging . This function returns .true. if the given pair of values agree with each other in the given precision (order), or .false. otherwise. LOGICAL(bool) FUNCTION isNearlyEqual(cmp, compared, precision) REAL, intent(in) :: cmp, compared ! or INTEGER INTEGER, intent(in) :: precision END FUNCTION isNearlyEqual . For the pair of the first two arguments, any combination of int8 , int16 , int32 , single and double is allowed. ...

Next: Other People's Software . ... Quality system management of computer workstations for astronomy can be achieved with relatively small manpower requirements, if the right cost-effective administrative design decisions are made. ... This is all done with essentially one system manager. ... The system is designed so that one doesn't depend on four or more hosts, (such as a software server, cpu server, data file server, font server, etc.) to get work done. ...

We have reanalyzed the Large Magellanic Cloud's (LMC) ultraviolet (UV) extinction using data from the IUE final archive. Our new analysis takes advantage of the improved signal-to-noise ratio of the IUE NEWSIPS reduction, the exclusion of stars with very low reddening, the careful selection of well-matched comparison stars, and an analysis of the effects of Galactic foreground dust. ...

Here we compare the optical properties of porous particles of two kinds: . ... Below we show the behaviour of the efficiency factors Q ext (x), Q sca (x), Q abs (x), the asymmetry parameter g (x) and albedo (x) as well as for x = 3 and 100 the phase function i (theta) and polarization of scattered radiation p (theta) for different values of the parameters m and P . ... factors . ... Qext(x) . Qsca(x) . ... i (theta) . ... albedo (x) . ...

... This thread uses PINTofALE to generate a simulated Chandra spectrum. ... define a DEM . ... pset marx .par ExposureTime=50000 OutputDir='sim_ marx ' \ ; GratingType='NONE' DetectorType=' ACIS-I ' SourceFlux=-1 \ ; SpectrumType='FILE' SpectrumFile='spec_ marx .dat' \ ; SourceType='POINT' DitherModel='INTERNAL' ; marx TSTART=2006.46 ; marx2fits sim_ marx / spec_ marx .evt ; dmextract infile= spec_ marx .evt[EVENTS][(x,y)=circle(4018,4141,10)] ; [bin pi=1:1024:1] outfile= spec_ ...

... User Guide ] Task: imcmp Purpose: Compare two images Categories: map analysis IMCMP is a MIRIAD task to compare two images. ... The two images are compared on a pixel by pixel basis, within a user defined region. Key: in1 The first input image. No default Key: in2 The second input image. No default Key: region Region to select data to compare. ... Key: cut Cutoff applied to data. ... Key: limy Minimum and maximum for plotting the pixel values of image 2 Default: autoscaling. ...

... HD144941 is a B type hydrogen-deficient star. ... However, its H/He ratio puts it between the classifications of an extreme and an intermediate helium star, and its low C and N abundances make it unique amongst known H-deficient stars. ... Keywords. stars: helium stars -- stars: individual stars (HD144941) -- stars: atmospheres -- stars: abundances -- stars: oscillations -- stars: evolution . ... The iron abundance in the helium star HD144941 has been measured from ultraviolet Fe III lines. ...

Next: Principal Components Analysis Up: Multivariate Analysis Methods Previous: Multivariate Analysis Methods . Compared to the past, ever larger amounts of data are being collected in astronomy, and the rate will continue to accelerate in the next decades. It is therefore necessary to work on bigger samples if full advantage is to be taken of all accessible information. ... One way to work effectively on large samples is to apply, and if necessary to develop, suitable statistical methods. ...

... Bojan Nikolic web pages (r. 329) . ... Analysis of (radio) spectra . The RNested package is a re-implementation of the main algorithms from the radiospec package into the R statistical data analysis environment. ... packages ( "RNested" , repos = c ( "http://www.mrao.cam.ac.uk/~bn204/soft/R" , "http://cran.us.r-project.org" )) . ... RNested ? Nested Sampling in R & analysis of spectra . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Take a particularly simple signal: a cosine wave. ... Now, we are going to stretch and shrink the wavelet along the time axis (we assume the data is in the time domain), and at each time compare the shape of the signal to that of the wavelet. ... Figure 3: The wavelet (dotted line) is translated rela tive to the signal (solid line). ... Figure 4: The dashed line plots the `match' between the wavelets (dotted line) and the signal (solid line) as a function of time. ...

... The BM effect causes low-luminosity blazars (particularly BL Lacs) to be missed in surveys because the apparent luminosity of the non-thermal nuclear source does not exceed that of the host galaxy by a large factor. ... Browne (1995). ... In addition to these objects, a large fraction of the newly-identified BL Lacs in our sample (10 of 22; see Table 5) have been so classified only by virtue of our usage of the expanded March? et al. (1996) definition of the BL Lac class. ... 1996). ...

Feed cabin Nr. ... The secondary mirror of feed cabin No. 5 has augmented overall dimensions as compared with mirrors No. 1 - 3 and meant for effective operation with flaps on top and bottom of RATAN-600 circular reflector (figure 1). The feed cabin can to move as well on radial as on circular railways. Feed cabin Nr. 5 enables long tracking of radio sources at the Southern sector in combination with the Flat reflector as the cabin is moved on the arch rails. Figure 1. ...

... Ширина: 225 мм . Шины . ... Артикул 3386432 . ...

. You can compare any two versions of a file that is under the control of SCCS with the sccsdiff command: /usr/sccs/sccsdiff -r version -r version s. filename . Using this command produces a line by line difference between the two versions of the file. Results are shown in the same format as that produced by the diff command. Examples .

... 30K SEFD effective 3.7 Jy Spider scans find SEFD =4.3,5.7 PolB has some problem that can probably be improved SEFD Pol A SEFD Pol B Spider scans central pixel Spider scans pixel 2 Spider scans pixel 5 (best) OH hexmap with L-wide Check pixels 1-6 with L-wide map · SEFD for off pixels is ~1.33 central value (based on measurements at 1400 MHz) · Spacing is 4.1 arcmin in ...

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... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... Mass . 17a. Measuring Mass . ... A medium-size (1.25 inch wide) binder clip, as is used in offices to hold papers together--the type made of flat blue steel, with two wire handles. ... The theory predicts that the oscillation period should be proportional to the square root of the oscillating mass, including the mass of the clip. Note that gravity plays no part here: the oscillation period would be the same on the Moon or in zero-g. Denoting square root by SQRT, we have . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Directory of astronomy web sites. ... Listed Since October 25, 2004 . ... Web Site . http://123world.com/astronomy/index.html . ... Web . www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... Briefly, the count rate at the detector from a source at a redshift z is . ... Another possible way that could lead to arising diverse peculiarities in the - distribution induced by the sources evolution is connected with a possible non-monotonic character of the star formation rate in galaxies. ... The most prominent feature of the obtained theoretical - is a notable sharp increase at low count rates due to evolutionary effects. ...