the rotational bahvior of intermediate mass f g-and_k envolved stars
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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
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.
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)
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.
HR Diagram
Luminosity Class and Spectral Type
v sin i Rotation Single Ib e II Binary Ib e II
v sin i Rotation
HR Diagram with (B-V) > 0,7
v sin i Rotation
HR Diagram with (B-V) > 0,7
v sin i Rotation
HR Diagram with (B-V) > 0,7
v sin i Rotation
HR Diagram with (B-V) > 0,7
v sin i Rotation
HR Diagram with (B-V) > 0,7
v sin i Rotation
HR Diagram with (B-V) > 0,7
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
Infrared (IRAS) Binary Ib
Infrared (IRAS) Binary II
Infrared (IRAS) Single Ib
Infrared (IRAS) Single II
Orientador: Prof. Dr. José Renan de Medeiros Discente: Luciano Luiz Alencar de Oliveira E-mail: aluciano26@yahoo.com
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