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