Names for Companion Stars
نویسندگان
چکیده
منابع مشابه
Companion Stars of Type Ia supernovae with different metallicities
Single degenerate model is the widely accepted progenitor model of Type Ia supernovae (SNe Ia), where a CO WD accretes hydrogen-rich material from its companion to increase its mass. The companion may be a main-sequence star or a subgiant star (WD + MS). When the CO WD approaches the Chandrasekhar mass limit, it explodes as a SN Ia and a part of supernova ejecta collides into the companion enve...
متن کاملBowen Fluorescence from Companion Stars in X-ray Binaries
This paper will review a new technique of detecting companion stars in LMXBs and X-ray transients in outburst using the Bowen fluorescence lines at λλ4634-4640. These lines are very efficiently reprocessed in the atmospheres of the companion stars, and thereby provide estimates of the K2 velocities and mass functions. The method has been applied to Sco X-1, X1822-371 and GX339-4 which, in the l...
متن کاملPhotometry of four binary subdwarf B stars and the nature of their unseen companion stars
We present lightcurves of four binary subdwarf B stars, Ton 245, Feige 11, PG1432+159 and PG1017−086. We also present new spectroscopic data for PG1017−086 from which we derive its orbital period, P = 0.073d, and the mass function, fm = 0.0010±0.0002M⊙. This is the shortest period for an sdB binary measured to-date. The values of P and fm for the other sdB binaries have been published elsewhere...
متن کاملApproximate String Matching for Geographic Names and Personal Names
The problem of matching strings allowing errors has recently gained importance, considering the increasing volume of online textual data. In geotechnologies, approximate string matching algorithms find many applications, such as gazetteers, address matching, and geographic information retrieval. This paper presents a novel method for approximate string matching, developed for the recognition of...
متن کاملPrecise Radial Velocities of Giant Stars II. Pollux and its Planetary Companion
It has long been speculated that the observed periodic radial velocity pattern for the K giant Pollux might be explained in terms of an orbiting planetary companion. We have collected 80 high-resolution spectra for Pollux at Lick Observatory yielding precise radial velocities with a mean error of 3.8 m/s, providing the most comprehensive and precise data set available for this star. Our data co...
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: Nature
سال: 1926
ISSN: 0028-0836,1476-4687
DOI: 10.1038/117381b0