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Anders Bo Justesen

Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array

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Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array. / White, T. R.; Huber, D.; Mann, A. W.; Casagrande, L.; Grunblatt, S. K.; Justesen, A. B.; Aguirre, V. Silva; Bedding, T. R.; Ireland, M. J.; Schaefer, G. H.; Tuthill, P. G.

I: Monthly Notices of the Royal Astronomical Society, Bind 477, Nr. 4, 07.2018, s. 4403-4413.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

White, TR, Huber, D, Mann, AW, Casagrande, L, Grunblatt, SK, Justesen, AB, Aguirre, VS, Bedding, TR, Ireland, MJ, Schaefer, GH & Tuthill, PG 2018, 'Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array', Monthly Notices of the Royal Astronomical Society, bind 477, nr. 4, s. 4403-4413. https://doi.org/10.1093/mnras/sty898

APA

White, T. R., Huber, D., Mann, A. W., Casagrande, L., Grunblatt, S. K., Justesen, A. B., ... Tuthill, P. G. (2018). Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array. Monthly Notices of the Royal Astronomical Society, 477(4), 4403-4413. https://doi.org/10.1093/mnras/sty898

CBE

White TR, Huber D, Mann AW, Casagrande L, Grunblatt SK, Justesen AB, Aguirre VS, Bedding TR, Ireland MJ, Schaefer GH, Tuthill PG. 2018. Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array. Monthly Notices of the Royal Astronomical Society. 477(4):4403-4413. https://doi.org/10.1093/mnras/sty898

MLA

Vancouver

White TR, Huber D, Mann AW, Casagrande L, Grunblatt SK, Justesen AB o.a. Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array. Monthly Notices of the Royal Astronomical Society. 2018 jul;477(4):4403-4413. https://doi.org/10.1093/mnras/sty898

Author

White, T. R. ; Huber, D. ; Mann, A. W. ; Casagrande, L. ; Grunblatt, S. K. ; Justesen, A. B. ; Aguirre, V. Silva ; Bedding, T. R. ; Ireland, M. J. ; Schaefer, G. H. ; Tuthill, P. G. / Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array. I: Monthly Notices of the Royal Astronomical Society. 2018 ; Bind 477, Nr. 4. s. 4403-4413.

Bibtex

@article{c25116cd260d422891199e2be8bf2cd5,
title = "Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array",
abstract = "Debate over the planet occurrence rates around intermediate-mass stars has hinged on the accurate determination of masses of evolved stars, and has been exacerbated by a paucity of reliable, directly measured fundamental properties for these stars. We present long-baseline optical interferometry of five evolved intermediate-mass (similar to 1.5M(circle dot)) planet-hosting stars using the PAVO beam combiner at the CHARA Array, which we combine with bolometric flux measurements and parallaxes to determine their radii and effective temperatures. Wemeasured the radii and effective temperatures of 6 Lyncis (5.12 +/- 0.16 R-circle dot, 4949 +/- 58 K), 24 Sextantis (5.49 +/- 0.18 R-circle dot, 4908 +/- 65 K), kappa Coronae Borealis (4.77 +/- 0.07 R-circle dot, 4870 +/- 47 K), HR 6817 (4.45 +/- 0.08 R-circle dot, 5013 +/- 59 K), and HR8461 (4.91 +/- 0.12 R-circle dot, 4950 +/- 68 K). We find disagreements of typically 15 per cent in angular diameter and similar to 200K in temperature compared to interferometric measurements in the literature, yet good agreement with spectroscopic and photometric temperatures, concluding that the previous interferometric measurements may have been affected by systematic errors exceeding their formal uncertainties. Modelling based on BaSTI isochrones using various sets of asteroseismic, spectroscopic, and interferometric constraints tends to favour slightly (similar to 15 per cent) lower masses than generally reported in the literature.",
keywords = "techniques: interferometric, stars: fundamental parameters, planetary systems, SOLAR-LIKE OSCILLATIONS, GIANT IOTA-DRACONIS, ANGULAR DIAMETERS, EFFECTIVE TEMPERATURES, STELLAR OSCILLATIONS, MODEL ATMOSPHERES, PHOTOMETRIC DATA, K2 OBSERVATIONS, RED GIANT, XI-HYA",
author = "White, {T. R.} and D. Huber and Mann, {A. W.} and L. Casagrande and Grunblatt, {S. K.} and Justesen, {A. B.} and Aguirre, {V. Silva} and Bedding, {T. R.} and Ireland, {M. J.} and Schaefer, {G. H.} and Tuthill, {P. G.}",
year = "2018",
month = "7",
doi = "10.1093/mnras/sty898",
language = "English",
volume = "477",
pages = "4403--4413",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array

AU - White, T. R.

AU - Huber, D.

AU - Mann, A. W.

AU - Casagrande, L.

AU - Grunblatt, S. K.

AU - Justesen, A. B.

AU - Aguirre, V. Silva

AU - Bedding, T. R.

AU - Ireland, M. J.

AU - Schaefer, G. H.

AU - Tuthill, P. G.

PY - 2018/7

Y1 - 2018/7

N2 - Debate over the planet occurrence rates around intermediate-mass stars has hinged on the accurate determination of masses of evolved stars, and has been exacerbated by a paucity of reliable, directly measured fundamental properties for these stars. We present long-baseline optical interferometry of five evolved intermediate-mass (similar to 1.5M(circle dot)) planet-hosting stars using the PAVO beam combiner at the CHARA Array, which we combine with bolometric flux measurements and parallaxes to determine their radii and effective temperatures. Wemeasured the radii and effective temperatures of 6 Lyncis (5.12 +/- 0.16 R-circle dot, 4949 +/- 58 K), 24 Sextantis (5.49 +/- 0.18 R-circle dot, 4908 +/- 65 K), kappa Coronae Borealis (4.77 +/- 0.07 R-circle dot, 4870 +/- 47 K), HR 6817 (4.45 +/- 0.08 R-circle dot, 5013 +/- 59 K), and HR8461 (4.91 +/- 0.12 R-circle dot, 4950 +/- 68 K). We find disagreements of typically 15 per cent in angular diameter and similar to 200K in temperature compared to interferometric measurements in the literature, yet good agreement with spectroscopic and photometric temperatures, concluding that the previous interferometric measurements may have been affected by systematic errors exceeding their formal uncertainties. Modelling based on BaSTI isochrones using various sets of asteroseismic, spectroscopic, and interferometric constraints tends to favour slightly (similar to 15 per cent) lower masses than generally reported in the literature.

AB - Debate over the planet occurrence rates around intermediate-mass stars has hinged on the accurate determination of masses of evolved stars, and has been exacerbated by a paucity of reliable, directly measured fundamental properties for these stars. We present long-baseline optical interferometry of five evolved intermediate-mass (similar to 1.5M(circle dot)) planet-hosting stars using the PAVO beam combiner at the CHARA Array, which we combine with bolometric flux measurements and parallaxes to determine their radii and effective temperatures. Wemeasured the radii and effective temperatures of 6 Lyncis (5.12 +/- 0.16 R-circle dot, 4949 +/- 58 K), 24 Sextantis (5.49 +/- 0.18 R-circle dot, 4908 +/- 65 K), kappa Coronae Borealis (4.77 +/- 0.07 R-circle dot, 4870 +/- 47 K), HR 6817 (4.45 +/- 0.08 R-circle dot, 5013 +/- 59 K), and HR8461 (4.91 +/- 0.12 R-circle dot, 4950 +/- 68 K). We find disagreements of typically 15 per cent in angular diameter and similar to 200K in temperature compared to interferometric measurements in the literature, yet good agreement with spectroscopic and photometric temperatures, concluding that the previous interferometric measurements may have been affected by systematic errors exceeding their formal uncertainties. Modelling based on BaSTI isochrones using various sets of asteroseismic, spectroscopic, and interferometric constraints tends to favour slightly (similar to 15 per cent) lower masses than generally reported in the literature.

KW - techniques: interferometric

KW - stars: fundamental parameters

KW - planetary systems

KW - SOLAR-LIKE OSCILLATIONS

KW - GIANT IOTA-DRACONIS

KW - ANGULAR DIAMETERS

KW - EFFECTIVE TEMPERATURES

KW - STELLAR OSCILLATIONS

KW - MODEL ATMOSPHERES

KW - PHOTOMETRIC DATA

KW - K2 OBSERVATIONS

KW - RED GIANT

KW - XI-HYA

U2 - 10.1093/mnras/sty898

DO - 10.1093/mnras/sty898

M3 - Journal article

VL - 477

SP - 4403

EP - 4413

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 4

ER -