Mean distances in single line binaries.
نویسندگان
چکیده
منابع مشابه
Direct Distances to Nearby Galaxies Using Detached Eclipsing Binaries
The DIRECT project aims to determine direct distances to two important galaxies in the cosmological distance ladder – M31 and M33 – using detached eclipsing binaries (DEBs) and Cepheids. We present the results of the first large-scale CCD-based search for variables in M33. We have observed two fields located in the central region of M33 for a total of 95 nights on the F. L. Whipple Observatory ...
متن کاملComputing Distances between Surfaces Using Line Geometry
We present an algorithm for computing the distance between two free-form surfaces. Using line geometry, the distance computation is reformulated as a simple instance of a surface-surface intersection problem, which leads to lowdimensional root finding in a system of equations. This approach produces an efficient algorithm for computing the distance between two ellipsoids, where the problem is r...
متن کاملModeling Forbidden Line Emission Profiles from Colliding Wind Binaries
This paper presents calculations for forbidden emission line profile shapes arising from colliding wind binaries. The main application is for systems involving a Wolf-Rayet (WR) star and an OB star companion. The WR wind is assumed to dominate the forbidden line emission. The colliding wind interaction is treated as an archimedean spiral with an inner boundary. Under the assumptions of the mode...
متن کاملThe distances to the X - ray binaries LSI + 61 ◦ 303 and A 0535 + 262
Chevalier & Ilovaisky (1998) use Hipparcos data to show that the X-ray binary systems LSI+61◦ 303 and A0535+262 are a factor of ten closer (i.e. d ∼ few hundred pc) than previously thought (d ∼ 2kpc). We present high quality CCD spectra of the systems, and conclude that the spectral types, reddening and absolute magnitudes of these objects are strongly inconsistent with the closer distances. We...
متن کاملThe distances to Galactic low–mass X–ray binaries: consequences for black hole luminosities and kicks
We investigated the reported distances of Galactic black hole (BH) and neutron star low–mass X–ray binaries (LMXBs). Comparing the distances derived for the neutron stars Cyg X–2 and XTE J2123–058 using the observed Eddington limited photospheric radius expansion bursts with the distances derived using the observed radius and effective temperature of the companion star we find that the latter a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1951
ISSN: 0004-6256
DOI: 10.1086/106591