Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars

Details Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....110..753g&link_type=abstract

Astronomical Journal v.110, p.753

Astronomy and Astrophysics

Astronomy

69

Stars: Pre-Main Sequence, Binaries: Close

Scientific paper

Over a five year period, we have used speckle imaging to monitor 20 T Tauri binary stars with separations ranging from 0".09 to 1" (13-140 AU). This project is aimed at detecting the relative motion of the component stars to ascertain whether or not the observed companions (1) are stellar in nature, as opposed to being HH objects, and (2) are gravitationally bound to the primary stars. These observations demonstrate that speckle imaging measurements of close binary stars' separations can be made with an accuracy of a few milliarcseconds. The majority of the observed systems show significant relative velocities which (1) are not consistent with the motion expected for HH objects, (2) are greater than the velocity dispersion of these star-forming regions and thus are not the result of differential proper motion, and (3) are consistent with orbital motion. This is the first demonstration that these systems are physically bound. Furthermore, these relative velocity measurements provide dynamical evidence that the average total mass of these T Tauri binary star systems is ˜l.7Msun0.

Affiliated with

Also associated with

No associations

Rating

Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars 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 Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1267905