18 citations · 140 across the 31 of their papers we have counts for
33 papers
On the nascent wind of nearby oxygen-rich AGB stars: a brief review
P. Darriulat, D. T. Hoai, P. T. Nhung +4
The commonly accepted mechanism governing the formation of the nascent wind in oxygen-rich AGB stars combines an initial boost above the photosphere, given by shock waves resulting…
Evidence for episodic and patchy mass ejection in the circumstellar envelope of AGB star R Leonis
D. T. Hoai, P. T. Nhung, M. N. Tan +5
The morpho-kinematics of the circumstellar envelope of oxygen-rich AGB star R Leonis is probed using ALMA (Atacama Large Millimeter/submillimeter Array) observations of the emissio…
Contributions of rotation, expansion and line broadening to the morpho-kinematics of the inner CSE of oxygen-rich AGB star R Hya
P. T. Nhung, D. T. Hoai, P. Darriulat +4
We use archival ALMA observations of the CO(2-1) and SiO(5-4) molecular line emissions of AGB star R Hya to illustrate the relative contributions of rotation, expansion and line br…
Recent mass ejection from AGB star W Hya
Do Thi Hoai, Pham Tuyet Nhung, Pierre Darriulat +4
We analyse archival ALMA (Atacama Large Millimeter/submillimeter Array) observations of two molecular line emissions, CO(3-2) and SiO(8-7), from oxygen-rich AGB (Asym…
Molecules, shocks, and disk in the axi-symmetric wind of the MS-type AGB star RS Cancri
J. M. Winters, D. T. Hoai, K. T. Wong +6
The latest evolutionary phases of low- and intermediate mass stars are characterized by complex physical processes like turbulence, convection, stellar pulsations, magnetic fields,…
Morpho-kinematics of the wind of AGB star L Pup
D. T. Hoai, P. T. Nhung, P. Darriulat +4
Single dish observations of AGB star L Pup have revealed exceptionally low mass loss rate and expansion velocity, challenging interpretations in terms of standard wind models.…
Mira Ceti, atypical archetype
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +4
With the aim of unraveling the complexity of the morpho-kinematics of the circumstellar envelope (CSE) of Mira Ceti, we review, extend and in some cases revisit ALMA millimeter obs…
ALMA Observations of W Hya: Impact of missing baselines
Do Thi Hoai, Pham Tuan Anh, Pham Tuyet Nhung +4
The lack of short baselines, referred to as short-spacing problem (SSP), is a well-known limitation of the performance of radio interferometers, causing a reduction of the detected…
Morpho-kinematics of the molecular gas in a quasar host galaxy at redshift =0.654
T. T. Thai, P. Tuan-Anh, P. Darriulat +5
We present a new study of archival ALMA observations of the CO(2-1) line emission of the host galaxy of quasar RX J1131 at redshift =0.654, lensed by a foreground galaxy. A simp…
Morpho-kinematics of the circumstellar envelope of the AGB star R Dor: a global view
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +5
We analyse new ALMA observations of the SiO (=0, =87) and SO(=0, ) line emissions of the circumstellar envelope (CSE) of the oxygen-…
Quadruply-imaged quasars: some general features
P. Tuan-Anh, T. T. Thai, N. A. Tuan +6
Gravitational lensing of point sources located inside the lens caustic is known to produce four images in a configuration closely related to the source position. We study this rela…
Revealing new features of the millimetre emission of the circumbinary envelope of Mira Ceti
D. T. Hoai, P. Tuan-Anh, P. T. Nhung +4
We study the morpho-kinematics of the circumbinary envelope of Mira Ceti between 100 and 350 au from the stars using ALMA observations of the SiO (=0, =5-4) and C…
The nascent wind of AGB star R Doradus: evidence for a recent episode of enhanced mass loss
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +4
We analyse ALMA observations of the SO() emission of the circumstellar envelope of oxygen-rich AGB star R Dor, probing distances between 20 and 100 au from the star wh…
Observation of high Doppler velocity wings in the nascent wind of R Doradus
D. T. Hoai, P. T. Nhung, P. Tuan-Anh +4
We study the morpho-kinematics in the nascent wind of AGB star R Doradus in the light of high Doppler velocity wings observed in the spectral lines of several species. We probe dis…
Observation of narrow polar jets in the nascent wind of oxygen-rich AGB star EP Aqr
P. Tuan-Anh, D. T. Hoai, P. T. Nhung +6
Using ALMA observations of CO(2-1), SiO(5-4) and SO(16-17) emissions of the circumstellar envelope of AGB star EP Aqr, we describe the mo…
The morpho-kinematics of the circumstellar envelope around the AGB star EP Aqr
D. T. Hoai, P. T. Nhung, P. Tuan-Anh +6
ALMA observations of CO(1-0) and CO(2-1) emissions of the circumstellar envelope of EP Aqr, an oxygen-rich AGB star, are reported. A thorough analysis of their properties is presen…
ALMA observations of the circumstellar envelope around EP Aqr
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +6
Atacama Large Millimetre/sub-millimetre Array (ALMA) observations of the CO(1-0) and CO(2-1) emissions from the circumstellar envelope of the Asymptotic Giant Branch (AGB) star EP…
De-projection of radio observations of axi-symmetric expanding circumstellar envelopes
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +5
The problem of de-projection of radio line observations of axi-symmetric expanding circumstellar envelopes is studied with the aim of easing their analysis in terms of physics mode…
Morphology of the CO(3-2) millimeter emission across the gas disc surrounding the triple protostar GG Tau A using ALMA observations
N. T. Phuong, P. N. Diep, A. Dutrey +8
Observations by the Atacama Large Millimeter/sub-millimeter Array of the dust continuum and CO(3-2) millimeter emissions of the triple stellar system GG Tau A are analysed,…
High resolution ALMA observation of the CO(3-2) and 350 GHz continuum emissions of the debris disc of 49 Ceti
P. T. Nhung, D. T. Hoai, P. Tuan-Anh +4
We present high resolution ALMA observations of the CO(3-2) and 350 GHz continuum emissions of the debris disc of 49 Ceti, known to be particularly rich in molecular gas in spite o…
Space reconstruction of the morphology and kinematics of axisymmetric radio sources
P. N. Diep, N. T. Phuong, D. T. Hoai +4
The unprecedented quality of the observations available from the Atacama Large Millimetre/sub-millimetre Array (ALMA) calls for analysis methods making the best of them. Reconstruc…
Morphology and kinematics of the gas envelope of the Mira binary W Aquilae
D. T. Hoai, P. T. Nhung, P. N. Diep +4
We analyse ALMA observations of the 12CO(3-2) emission of the circumstellar envelope (CSE) of the Mira variable binary star W Aql. These provide, for the first time, spatially reso…
Morphology and kinematics of the gas envelope of the variable AGB star Gruis
P. T. Nhung, D. T. Hoai, P. N. Diep +4
Observations of the CO(3-2) emission of the circumstellar envelope (CSE) of the variable star Gru using the compact array (ACA) of the ALMA observatory have been recen…
CO emission from the Red Rectangle
Pham Tuan Anh, Pham Ngoc Diep, Do Thi Hoai +4
Observations of an unprecedented quality made by ALMA on the Red Rectangle of CO(3-2) and CO(6-5) emissions are analysed jointly with the aim of obtaining as simple as possible a d…