Abstract
view Abstract Citations (17) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Binary galaxy orbit statistics. I. Fixed mass and major axis. Noerdlinger, P. D. Abstract Averages for the projected separation, squared radial velocity difference, and the product of these, are presented for a binary galaxy system of fixed mass and major axis, but any orbital eccentricity. The average of the product varies by a factor about 3 for eccentricities from 0 to 1.0. For circular orbits, the results agree with those of Page (1952, 1960, 1961), but for linear orbits his mass estimate is too small by a factor 6. The mutual regressions of the velocity and separation on each other are calculated, and are presented in such a way as to exhibit the relative likelihood of occupation of the different parts of the regression curves. 'Isopleths' for the probability distribution are presented for a few values of the eccentricity to illustrate the underlying cause of pileup at certain parts of the regression curves. It is concluded that previous analyses were inadequate for failing to take into account that the regression curves represent in many cases a distribution that is almost wholly depopulated through most of the range. It is evident that the data are insufficient to draw a firm conclusion about the distribution of eccentricities. Publication: The Astrophysical Journal Pub Date: May 1975 DOI: 10.1086/153542 Bibcode: 1975ApJ...197..545N Keywords: Galactic Structure; Mass Ratios; Orbital Elements; Regression Analysis; Two Body Problem; Astronomical Models; Circular Orbits; Eccentric Orbits; Galactic Clusters; Probability Density Functions; Astronomy full text sources ADS |
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
