Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (15) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (4)
· Associated Articles
· Reads History
·
· Translate This Page
Title:
The Radial Velocity Variability of the K Giant beta Ophiuchi. II. Long-Period Variations
Authors:
Hatzes, Artie P.; Cochran, William D.
Publication:
Astrophysical Journal v.468, p.391 (ApJ Homepage)
Publication Date:
09/1996
Origin:
APJ
Astronomy Keywords:
STARS: INDIVIDUAL CONSTELLATION NAME: BETA OPHIUCHI, STARS: OSCILLATIONS, TECHNIQUES: RADIAL VELOCITIES
DOI:
10.1086/177699
Bibliographic Code:
1996ApJ...468..391H

Abstract

Precise relative radial velocity measurements (sigma ˜ 20 m s-1) of the K giant beta Oph are presented and these show variations with a period of 13.05 days. Rotational modulation, low-mass companions, and radial velocity variations can be excluded as an explanation for these variations. Most likely this period results from a nonradial g-mode. A period analysis on the residual radial velocities after subtracting the contribution of the dominant period yields a long-term period of 142.3 days and a short-term period of 0.2589±0.005 days. The latter is consistent with previous works by Hatzes & Cochran. The long-term period, if real, most likely arises from rotational modulation by surface features, although the presence of a planetary companion cannot be excluded at the present time.

Associated Articles

Part  1     Part  2    


Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints