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The Rotational Behavior of Intermediate-mass F, G and K Evolved Stars
Luciano Luiz Alencar de Oliveira 11/12/2014
Nata – RN
Universidade Federal do Rio Grande do Norte Programa de Pós-Graduação em Física
Departamento de Física Teórica e da Terra - DFTE
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Objective To understand the behavior of the rotation of
intermediate mass evolved stars, such as F, G
and K.
A comparative study of the rotation of binary
and single evolved stars.
An Analysis of the infrared emission in binary
and single evolved.
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Reference Data (lists of stars used in this work)
VizieR online Data Catalog: RV and vsini of evolveld
stars (de Medeiros+, 1999).
A catalog of rotational and radial velocities for evolved
stars II and Ib supergiants stars (de Medeiros+, 2002).
A catalog of rotational and radial velocities for evolved
stars: RV and vsini of southern stars (de Medeiros+,
2014)
Post annotation Extended Hipparcos Compilation
(XHIP) (Anderson+, 2012)
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Luminosity Class and Spectral Type
Luminosity class are organized as follows:
Ib (supergiants)
II (bright giant)
Binary and Single
Taking the following data: parallax; distance (parsecs),
absoluta magnitude, log 𝑇𝑒𝑓𝑓, log𝐿
𝐿𝑠𝑜𝑙 e etc.
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HR Diagram
Luminosity Class and Spectral Type
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v sin i Rotation Single Ib e II Binary Ib e II
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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v sin i Rotation
HR Diagram with (B-V) > 0,7
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Infrared (IRAS)
Method applied by Waters et al. (1987), to normal stars:
𝑉 − 12 = 0.05 + 3.13 𝐵 − 𝑉 − 1.26 𝐵 − 𝑉 2 + 0.29 𝐵 − 𝑉 3 + 0.16 𝐵 − 𝑉 4
From of magnitudes 12, 25 e 60 µm, according to
Oudmaijer et al (1992)
𝑚𝜆 = 2.5𝑙𝑜𝑔𝐾𝜆𝑓𝜐[0.00𝑚𝑎𝑔]
𝑓𝜐
Flux density in Jy
41.04; 90.49 e 1.57
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Infrared (IRAS) Binary Ib
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Infrared (IRAS) Binary II
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Infrared (IRAS) Single Ib
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Infrared (IRAS) Single II
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Orientador: Prof. Dr. José Renan de Medeiros Discente: Luciano Luiz Alencar de Oliveira E-mail: [email protected]