The K-band intensity profile of R Leonis probed by VLTI/VINCI

D. Fedele; M. Wittkowski; F. Paresce; M. Scholz; P. R. Wood; S. Ciroi

doi:10.1007/978-3-540-74256-2_10

The K-band intensity profile of R Leonis probed by VLTI/VINCI

D. Fedele^*, M. Wittkowski, F. Paresce, M. Scholz, P. R. Wood, S. Ciroi

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with VLTI/VINCI. The April 2001 measurements indicate a center-to-limb intensity variation (CLV) that is clearly different from a uniform disk (UD) intensity profile. We show that these measured visibility values are consistent with predictions from recent self-excited dynamic Mira model atmospheres. We derived high-precision Rosseland diameters for the two epochs and, together with literature estimates of the distance and the bolometric flux, we find linear radii of 350_-40⁺⁵⁰ R⊙ and 320_-40⁺⁵⁰ R⊙ and effective temperatures of 2930 ± 270 K and 3080 ± 310 K, respectively.

Original language	English
Title of host publication	The Power of Optical/IR Interferometry
Subtitle of host publication	Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005
Editors	Andrea Richichi, Francoise Delplancke, Francesco Paresce, Alain Chelli
Pages	95-98
Number of pages	4
DOIs	https://doi.org/10.1007/978-3-540-74256-2_10
Publication status	Published - 2008

Publication series

Name	ESO Astrophysics Symposia
Volume	2008
ISSN (Print)	1431-2433
ISSN (Electronic)	1611-6143

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10.1007/978-3-540-74256-2_10

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Fedele, D., Wittkowski, M., Paresce, F., Scholz, M., Wood, P. R., & Ciroi, S. (2008). The K-band intensity profile of R Leonis probed by VLTI/VINCI. In A. Richichi, F. Delplancke, F. Paresce, & A. Chelli (Eds.), The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005 (pp. 95-98). (ESO Astrophysics Symposia; Vol. 2008). https://doi.org/10.1007/978-3-540-74256-2_10

Fedele, D. ; Wittkowski, M. ; Paresce, F. et al. / The K-band intensity profile of R Leonis probed by VLTI/VINCI. The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005. editor / Andrea Richichi ; Francoise Delplancke ; Francesco Paresce ; Alain Chelli. 2008. pp. 95-98 (ESO Astrophysics Symposia).

@inproceedings{50ea6a771eef4dcca21d4830e41d4902,

title = "The K-band intensity profile of R Leonis probed by VLTI/VINCI",

abstract = "We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with VLTI/VINCI. The April 2001 measurements indicate a center-to-limb intensity variation (CLV) that is clearly different from a uniform disk (UD) intensity profile. We show that these measured visibility values are consistent with predictions from recent self-excited dynamic Mira model atmospheres. We derived high-precision Rosseland diameters for the two epochs and, together with literature estimates of the distance and the bolometric flux, we find linear radii of 350-40+50 R⊙ and 320-40+50 R⊙ and effective temperatures of 2930 ± 270 K and 3080 ± 310 K, respectively.",

author = "D. Fedele and M. Wittkowski and F. Paresce and M. Scholz and Wood, {P. R.} and S. Ciroi",

year = "2008",

doi = "10.1007/978-3-540-74256-2_10",

language = "English",

isbn = "3540742530",

series = "ESO Astrophysics Symposia",

pages = "95--98",

editor = "Andrea Richichi and Francoise Delplancke and Francesco Paresce and Alain Chelli",

booktitle = "The Power of Optical/IR Interferometry",

}

Fedele, D, Wittkowski, M, Paresce, F, Scholz, M, Wood, PR & Ciroi, S 2008, The K-band intensity profile of R Leonis probed by VLTI/VINCI. in A Richichi, F Delplancke, F Paresce & A Chelli (eds), The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005. ESO Astrophysics Symposia, vol. 2008, pp. 95-98. https://doi.org/10.1007/978-3-540-74256-2_10

The K-band intensity profile of R Leonis probed by VLTI/VINCI. / Fedele, D.; Wittkowski, M.; Paresce, F. et al.
The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005. ed. / Andrea Richichi; Francoise Delplancke; Francesco Paresce; Alain Chelli. 2008. p. 95-98 (ESO Astrophysics Symposia; Vol. 2008).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The K-band intensity profile of R Leonis probed by VLTI/VINCI

AU - Fedele, D.

AU - Wittkowski, M.

AU - Paresce, F.

AU - Scholz, M.

AU - Wood, P. R.

AU - Ciroi, S.

PY - 2008

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N2 - We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with VLTI/VINCI. The April 2001 measurements indicate a center-to-limb intensity variation (CLV) that is clearly different from a uniform disk (UD) intensity profile. We show that these measured visibility values are consistent with predictions from recent self-excited dynamic Mira model atmospheres. We derived high-precision Rosseland diameters for the two epochs and, together with literature estimates of the distance and the bolometric flux, we find linear radii of 350-40+50 R⊙ and 320-40+50 R⊙ and effective temperatures of 2930 ± 270 K and 3080 ± 310 K, respectively.

AB - We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with VLTI/VINCI. The April 2001 measurements indicate a center-to-limb intensity variation (CLV) that is clearly different from a uniform disk (UD) intensity profile. We show that these measured visibility values are consistent with predictions from recent self-excited dynamic Mira model atmospheres. We derived high-precision Rosseland diameters for the two epochs and, together with literature estimates of the distance and the bolometric flux, we find linear radii of 350-40+50 R⊙ and 320-40+50 R⊙ and effective temperatures of 2930 ± 270 K and 3080 ± 310 K, respectively.

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DO - 10.1007/978-3-540-74256-2_10

M3 - Conference contribution

SN - 3540742530

SN - 9783540742531

T3 - ESO Astrophysics Symposia

SP - 95

EP - 98

BT - The Power of Optical/IR Interferometry

A2 - Richichi, Andrea

A2 - Delplancke, Francoise

A2 - Paresce, Francesco

A2 - Chelli, Alain

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Fedele D, Wittkowski M, Paresce F, Scholz M, Wood PR, Ciroi S. The K-band intensity profile of R Leonis probed by VLTI/VINCI. In Richichi A, Delplancke F, Paresce F, Chelli A, editors, The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005. 2008. p. 95-98. (ESO Astrophysics Symposia). doi: 10.1007/978-3-540-74256-2_10

The K-band intensity profile of R Leonis probed by VLTI/VINCI

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