Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models

Details Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models

2002-06-24

arxiv.org/abs/astro-ph/0206406v1

New Astron. 7 (2002) 9

Astronomy and Astrophysics

Astrophysics

12 pages, 4 postscript figures

Scientific paper

10.1016/S1384-1076(01)00085-9

We present K'-band observations of five Mira stars with the IOTA interferometer. The interferograms were obtained with the FLUOR fiber optics beam combiner, which provides high-accuracy visibility measurements in spite of time-variable atmospheric conditions. For the M-type Miras X Oph, R Aql, RU Her, R Ser, and the C-type Mira V CrB we derived the uniform-disk diameters 11.7mas, 10.9mas, 8.4mas, 8.1mas, and 7.9mas (+/- 0.3mas), respectively. Simultaneous photometric observations yielded the bolometric fluxes. The derived angular Rosseland radii and the bolometric fluxes allowed the determination of effective temperatures. For instance, the effective temperature of R Aql was determined to be 2970 +/- 110 K. A linear Rosseland radius for R Aql of (250 +100/-60) Rsun was derived from the angular Rosseland radius of 5.5mas +/- 0.2mas and the HIPPARCOS parallax of 4.73mas +/- 1.19mas. The observations were compared with theoretical Mira star models of Bessel et al. (1996) and Hofmann et al. (1998). The effective temperatures of the M-type Miras and the linear radius of R Aql indicate fundamental mode pulsation.

Affiliated with

Also associated with

No associations

Rating

Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models 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 Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-3289