2003ApJ...589..976W

Query : 2003ApJ...589..976W

2003ApJ...589..976W - Astrophys. J., 589, 976-982 (2003/June-1)

Asymptotic giant branch and supergiant stellar diameters in the mid-infrared.

WEINER J., HALE D.D.S. and TOWNES C.H.

Abstract (from CDS):

The size of the continuum photospheres of α Ori, α Her, R Leo, and χ Cyg have been measured at 11 µm using heterodyne interferometry to accuracies as high as 1%. An assortment of narrow wavelength bands near 11 µm (each having a width ∼0.17cm–1) were used to avoid spectral lines. The resulting apparent diameters for α Ori and α Her are ∼30% larger than measured near-infrared sizes, whereas the Mira variables, R Leo and χ Cyg, have 11 µm apparent diameters roughly twice their reported near-infrared sizes. The complexities of interpretation are discussed.

Abstract Copyright: ∼

Journal keyword(s): Infrared: Stars - Stars: AGB and Post-AGB - stars: individual (χ Cygni, α Herculis) - Stars: Individual: Constellation Name: R Leonis - Stars: Individual: Constellation Name: α Orionis - Techniques: Interferometric

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1789 0
2 V* R Leo Mi* 09 47 33.4839808805 +11 25 43.823283729 9.22 8.94 7.53 3.39 0.12 M7-9e 943 1
3 * alf Her ** 17 14 38.85818 +14 23 25.2262           M5Ib-II+G5III+F2V: 209 0
4 * chi Cyg S* 19 50 33.9213430345 +32 54 50.575531294 7.02 6.06 4.24 1.81 -0.01 S6-9/1-2e 721 0

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