HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System

Details HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aj....129.1001f&link_type=abstract

The Astronomical Journal, Volume 129, Issue 2, pp. 1001-1007.

Other

8

Stars: Binaries: Spectroscopic, Stars: Fundamental Parameters, Stars: Variables: Other

Scientific paper

We have obtained extensive spectroscopic and velocity spectrometer observations of HD 166181, a previously known single-lined spectroscopic binary. Our improved orbit for the G6 V primary has a period of 1.8098343 days and is circular. Although the lines of additional components have not been detected, radial velocity measurements confirm that the system has additional velocity variations with a period of 2092 days, or 5.73 yr. This long-period orbit has an eccentricity of 0.76. An analysis of the Hipparcos observations produces a well-determined astrometric orbit for the long-period system that has an inclination of 78°. Mass estimates of the components in this zero-age main-sequence multiple system indicate that the unseen secondary in the 5.73 yr orbit may also be a binary. Thus, HD 166181 is at least a triple system and possibly quadruple.

Affiliated with

Also associated with

No associations

Rating

HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HD 166181 = V815 Herculis, a Single-lined Spectroscopic Multiple System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1747800