The angular diameter of R Doradus: a nearby Mira-like star

Details The angular diameter of R Doradus: a nearby Mira-like star The angular diameter of R Doradus: a nearby Mira-like star

1997-01-07

arxiv.org/abs/astro-ph/9701021v1

Mon.Not.Roy.Astron.Soc. 286 (1997) 957-962

Astronomy and Astrophysics

Astrophysics

MNRAS (accepted); 7 pages, LaTeX with necessary style file and PostScript figures

Scientific paper

We find the angular diameter of R Doradus to be 57 +/- 5 mas, exceeding that of Betelgeuse and implying that R Dor is larger in apparent size than every star except the Sun. R Dor is shown to be closely related to the Mira variables. We estimate an effective temperature of 2740 +/- 190 K, a distance of 61 +/- 7 pc, a luminosity of 6500 +/- 1400 Lsol and a radius of 370 +/- 50 Rsol. The characteristics of R Dor are consistent with it being near the edge of a Mira instability strip. We detect non-zero closure phases from R Dor, indicating an asymmetric brightness distribution. We also observed W Hya, a small-amplitude Mira, for which we find an angular diameter of 44 +/- 4 mas.

Affiliated with

Also associated with

No associations

Rating

The angular diameter of R Doradus: a nearby Mira-like star 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 The angular diameter of R Doradus: a nearby Mira-like star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The angular diameter of R Doradus: a nearby Mira-like star will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-387667