6 papers
Pulsations along the Asymptotic Giant Branch (AGB): a global view
Pierre Darriulat, Pham Thi Tuyet Nhung, Do Thi Hoai
In three preceding articles, we studied the relation between the light curves of Mira variables and their stellar properties. The analysis was restricted to a sample of stars offer…
On the shape of the ascending branch of the light curves of Long Period Variables
Do Thi Hoai Pham Tuyet Nhung, Pierre Darriulat
The present article is written in the wake of a recently published study of the relation between the light curves of Long Period Variables and their evolution along the Asymptotic…
From the light curves of Long Period Variables to their evolution along the AGB
Pham Thi Tuyet Nhung, Mai Nhat Tan, Do Thi Hoai +1
A sample of 116 Long Period Variables is studied with the aim to reveal relations between the properties of their light curves and of their evolution along the Asymptotic Giant Bra…
Stellar evolution along the AGB as revealed by the shape of Miras' visual light curves
D. T. Hoai, P. T. Nhung, P. Darriulat +1
A new analysis of a sample of visual light curves of Mira variables is presented. The curves cover the past four decades and are selected from the AAVSO database as including a ver…
Millimetre observations of the S-type AGB star Cygni: variability of the emission of the inner envelope
D. T. Hoai, J. M. Winters, P. T. Nhung +2
New observations are presented of millimetre line emissions of the circumstellar envelope (CSE) of AGB star Cygni using the recently upgraded NOEMA array. Cygni is an S-t…
EP Aquarii: a new picture of the circumstellar envelope
P. T. Nhung, D. T. Hoai, P. Darriulat +4
New analyses of earlier ALMA observations of oxygen-rich AGB star EP Aquarii are presented, which contribute major progress to our understanding of the morpho-kinematics of the cir…