No Fundamental-Mode Pulsation in R-Leonis

Details No Fundamental-Mode Pulsation in R-Leonis No Fundamental-Mode Pulsation in R-Leonis

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266..745t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 266, NO. 3/FEB1, P. 745, 1994

Other

39

Stars: Fundamental Parameters - Stars: Individual: R Leonis - Stars: Late-Type - Stars: Oscillations - Stars: Variables: Other

Scientific paper

We present new and precise angular diameter measurements of the long-period variable R Leonis at 833 and 903 nm. Our inferred photospheric diameter (38±2.5 mas) and stellar effective temperature (2459 + 150 K) are both in good agreement with recent determinations made at the same variability phase in the near-infrared. Assuming a parallax of 8.3 mas, we derive a stellar radius of 495 Rsun. This far exceeds the range of theoretical predictions for fundamental-mode pulsation (200+50 Rsun), and thus requires that R Leonis pulsates in the first- or a higher overtone mode. The expected availability of high-quality parallax measurements from the Hipparcos satellite and state-of-the-art ground-based instruments suggests that similar mode identification will be possible for a dozen or more nearby Mira-type variables.

Affiliated with

Also associated with

No associations

Rating

No Fundamental-Mode Pulsation in R-Leonis 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 No Fundamental-Mode Pulsation in R-Leonis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and No Fundamental-Mode Pulsation in R-Leonis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1017844