skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A NEW METHOD OF DETERMINING THE CHARACTERISTICS OF EVOLVED BINARY SYSTEMS REVEALED IN THE OBSERVED CIRCUMSTELLAR PATTERNS: APPLICATION TO AFGL 3068

Abstract

The binary characteristics of asymptotic giant branch (AGB) stars are imprinted in the asymmetric patterns of their circumstellar envelopes (CSEs). We develop a simple method for constraining the orbital parameters of such binary stars from the characteristics of a spiral-like pattern observed at large distances from the central stars. We place constraints on the properties of AFGL 3068 (i.e., the masses of binary components, the viewing inclination of the orbital plane, as well as the orbital period, velocity, and separation). In particular, the mass of the companion star of AFGL 3068 is estimated to be greater than 2.6 M{sub Sun }. This method is applicable to other AGB stars, providing a step toward understanding the role binary stars can play in explaining the diverse patterns in observed CSEs.

Authors:
;  [1]
  1. Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan (China)
Publication Date:
OSTI Identifier:
22078452
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 759; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASYMMETRY; ASYMPTOTIC SOLUTIONS; BINARY STARS; DISTANCE; GIANT STARS; INCLINATION; MASS; VELOCITY

Citation Formats

Kim, Hyosun, and Taam, Ronald E., E-mail: hkim@asiaa.sinica.edu.tw, E-mail: r-taam@northwestern.edu. A NEW METHOD OF DETERMINING THE CHARACTERISTICS OF EVOLVED BINARY SYSTEMS REVEALED IN THE OBSERVED CIRCUMSTELLAR PATTERNS: APPLICATION TO AFGL 3068. United States: N. p., 2012. Web. doi:10.1088/2041-8205/759/1/L22.
Kim, Hyosun, & Taam, Ronald E., E-mail: hkim@asiaa.sinica.edu.tw, E-mail: r-taam@northwestern.edu. A NEW METHOD OF DETERMINING THE CHARACTERISTICS OF EVOLVED BINARY SYSTEMS REVEALED IN THE OBSERVED CIRCUMSTELLAR PATTERNS: APPLICATION TO AFGL 3068. United States. doi:10.1088/2041-8205/759/1/L22.
Kim, Hyosun, and Taam, Ronald E., E-mail: hkim@asiaa.sinica.edu.tw, E-mail: r-taam@northwestern.edu. Thu . "A NEW METHOD OF DETERMINING THE CHARACTERISTICS OF EVOLVED BINARY SYSTEMS REVEALED IN THE OBSERVED CIRCUMSTELLAR PATTERNS: APPLICATION TO AFGL 3068". United States. doi:10.1088/2041-8205/759/1/L22.
@article{osti_22078452,
title = {A NEW METHOD OF DETERMINING THE CHARACTERISTICS OF EVOLVED BINARY SYSTEMS REVEALED IN THE OBSERVED CIRCUMSTELLAR PATTERNS: APPLICATION TO AFGL 3068},
author = {Kim, Hyosun and Taam, Ronald E., E-mail: hkim@asiaa.sinica.edu.tw, E-mail: r-taam@northwestern.edu},
abstractNote = {The binary characteristics of asymptotic giant branch (AGB) stars are imprinted in the asymmetric patterns of their circumstellar envelopes (CSEs). We develop a simple method for constraining the orbital parameters of such binary stars from the characteristics of a spiral-like pattern observed at large distances from the central stars. We place constraints on the properties of AFGL 3068 (i.e., the masses of binary components, the viewing inclination of the orbital plane, as well as the orbital period, velocity, and separation). In particular, the mass of the companion star of AFGL 3068 is estimated to be greater than 2.6 M{sub Sun }. This method is applicable to other AGB stars, providing a step toward understanding the role binary stars can play in explaining the diverse patterns in observed CSEs.},
doi = {10.1088/2041-8205/759/1/L22},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 1,
volume = 759,
place = {United States},
year = {2012},
month = {11}
}