Le mécanisme couramment accepté comme présidant à la formation du vent des étoiles AGB riches en oxygène combine deux effets : un élan initial qui projette le gaz au-dessus de la photosphère, donné par des ondes de choc produites par pulsations stellaires et cellules de convection, suivi d’une accélération alimentée par la pression de radiation stellaire sur des grains de poussière. Nous examinons dans quelle mesure ce modèle est corroboré par les observations de six étoiles proches faites dans les domaines du visible/infrarouge par le VLT et dans le domaine millimétrique par ALMA. Nous montrons que bien que généralement corroboré, n’ayant souffert aucune contradiction et servant utilement de guide aux recherches actuelles, il a encore besoin de nombreuses observations complémentaires pour être validé de manière fiable. En particulier, afin de mieux préciser les rôles joués par pulsations stellaires et mouvements de convection, il faudra mesurer la courbe de lumière en même temps qu’on observera, avec la meilleure résolution angulaire possible, les émissions des domaines millimétrique et visible/infrarouge. Il faudra clarifier comment la grande variabilité révélée par les observations de la photosphère est compatible avec la persistance sur des décennies, voire des siècles, de l’anisotropie de l’enveloppe. De nouvelles observations du gaz proche de l’étoile seront nécessaires pour préciser le mécanisme présidant à sa rotation, en particulier pour R Dor, L2 Pup et EP Aqr. Nous suggérons que la présence de compagnons stellaires ou planétaires n’a pratiquement pas d’impact sur la genèse du vent et ne fait que modifier son évolution ultérieure.
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 from stellar pulsations and convective cell partition, with a subsequent acceleration fuelled by the radiation pressure of the star on dust grains. We use six nearby stars, for which detailed studies of visible and infrared observations at the VLT and millimetre observations at ALMA are available, to assess the extent to which the validity of this picture is currently corroborated. We show that while providing a very useful guide to current research and having received general support and suffered no contradiction, it still requires many additional observations to be reliably validated. In particular, observations of the highest possible angular resolution at both millimetre and visible/infrared wavelengths, performed in conjunction with measurements of the light curve, are necessary to tell apart the respective roles played by convection and stellar pulsations. The observed concurrence of high variability near the photosphere with persistence over decades, or even centuries, of the global anisotropy displayed by the CSE needs to be understood. New observations of the close neighbourhood of the star are required to elucidate the mechanism that governs rotation, in particular in the cases of R Dor, L2 Pup and EP Aqr. We argue that the presence of stellar or planetary companions does not seriously impact the formation of the nascent wind and only modifies its subsequent evolution.
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Mot clés : Étoiles AGB, Enveloppe circumstellaire, Raies d’émission radio, Émission visible/infrarouge, Gaz/poussière, Pulsation/convection
Pierre Darriulat 1 ; Do Thi Hoai 1 ; Pham Thi Tuyet Nhung 1 ; Pham Ngoc Diep 1 ; Nguyen Bich Ngoc 1 ; Tran Thi Thai 1 ; Pham Tuan Anh 1
![](/physique/static/ptf/img/CC-BY%204.0.png)
@article{CRPHYS_2024__25_G1_219_0, author = {Pierre Darriulat and Do Thi Hoai and Pham Thi Tuyet Nhung and Pham Ngoc Diep and Nguyen Bich Ngoc and Tran Thi Thai and Pham Tuan Anh}, title = {On the nascent wind of oxygen-rich {AGB} stars: scrutiny of a sample of nearby stars}, journal = {Comptes Rendus. Physique}, pages = {219--250}, publisher = {Acad\'emie des sciences, Paris}, volume = {25}, year = {2024}, doi = {10.5802/crphys.185}, language = {en}, }
TY - JOUR AU - Pierre Darriulat AU - Do Thi Hoai AU - Pham Thi Tuyet Nhung AU - Pham Ngoc Diep AU - Nguyen Bich Ngoc AU - Tran Thi Thai AU - Pham Tuan Anh TI - On the nascent wind of oxygen-rich AGB stars: scrutiny of a sample of nearby stars JO - Comptes Rendus. Physique PY - 2024 SP - 219 EP - 250 VL - 25 PB - Académie des sciences, Paris DO - 10.5802/crphys.185 LA - en ID - CRPHYS_2024__25_G1_219_0 ER -
%0 Journal Article %A Pierre Darriulat %A Do Thi Hoai %A Pham Thi Tuyet Nhung %A Pham Ngoc Diep %A Nguyen Bich Ngoc %A Tran Thi Thai %A Pham Tuan Anh %T On the nascent wind of oxygen-rich AGB stars: scrutiny of a sample of nearby stars %J Comptes Rendus. Physique %D 2024 %P 219-250 %V 25 %I Académie des sciences, Paris %R 10.5802/crphys.185 %G en %F CRPHYS_2024__25_G1_219_0
Pierre Darriulat; Do Thi Hoai; Pham Thi Tuyet Nhung; Pham Ngoc Diep; Nguyen Bich Ngoc; Tran Thi Thai; Pham Tuan Anh. On the nascent wind of oxygen-rich AGB stars: scrutiny of a sample of nearby stars. Comptes Rendus. Physique, Volume 25 (2024), pp. 219-250. doi : 10.5802/crphys.185. https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.185/
[1] Global 3D radiation-hydrodynamics models of AGB stars; Effects of convection and radial pulsations on atmospheric structures, Astron. Astrophys., Volume 600 (2017), A137 | DOI
[2] Mass loss of stars on the asymptotic giant branch; Mechanisms, models and measurements, Astron. Astrophys., Volume 26 (2018), 1
[3] Exploring the origin of clumpy dust clouds around cool giants; A global 3D RHD model of a dust-forming M-type AGB star, Astron. Astrophys., Volume 623 (2019), A158 | DOI
[4] Global 3D radiation-hydrodynamical models of AGB stars with dust-driven winds, Astron. Astrophys., Volume 669 (2023), A155 | DOI
[5] et al. Study of the aluminium content in AGB winds using ALMA. Indications for the presence of gas-phase (AlO) clusters, Astron. Astrophys., Volume 608 (2017), A55 | DOI
[6] et al. ALMA spectral line and imaging survey of a low and a high mass-loss rate AGB star between 335 and 362 GHz, Astron. Astrophys., Volume 615 (2018), A28 | DOI
[7] et al. Dust formation and wind acceleration around the aluminum oxide-rich AGB star W Hydrae, Sci. Adv., Volume 3 (2017) no. 11, eaao2149 | DOI
[8] et al. Formation of transition alumina dust around asymptotic giant branch stars: condensation experiments using induction thermal plasma systems, Astrophys. J., Volume 878 (2019), L7 | DOI
[9] Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER, Astron. Astrophys., Volume 589 (2016), A91 | DOI
[10] Atmospheres and wind properties of non-spherical AGB stars, Astron. Astrophys., Volume 619 (2018), A47 | DOI
[11] et al. Large granulation cells on the surface of the giant star 1 Gruis
[12] et al. The close circumstellar environment of Betelgeuse. IV. VLTI/PIONIER interferometric monitoring of the photosphere, Astron. Astrophys., Volume 588 (2016), A130 | DOI
[13] et al. Convective cells in Betelgeuse: imaging through spectropolarimetry, Astron. Astrophys., Volume 620 (2018), A199 | DOI
[14] et al. Asymmetric shocks in Cygni observed with linear spectropolarimetry, Astron. Astrophys., Volume 632 (2019), A30 | DOI
[15] et al. Vizier online data catalog: asas variable stars in southern hemisphere, Vizier On-line Data Catalog: II/264, 2005
[16] Additional late-type stars with technetium, Astron. J., Volume 94 (1987), pp. 981-995 | DOI
[17] Abundances of Tc and related elements in stars of type M, MS, and S, Astrophys. J., Volume 381 (1991), pp. 278-287 | DOI
[18] Technetium abundance in Omicron Ceti, Baltic Astron., Volume 1 (1992), pp. 190-193
[19] A search for Technetium in semiregular variables, Astron. Astrophys., Volume 351 (1999), pp. 533-542
[20] et al. ALMA observations of the nearby AGB star L Puppis. I. Mass of the central star and detection of a candidate planet, Astron. Astrophys., Volume 596 (2016), A92 | DOI
[21] et al. Resolving the stellar activity of the Mira AB binary with ALMA, Astron. Astrophys., Volume 577 (2015), L4
[22] New measurements of the radio photosphere of Mira based on data from the JVLA and ALMA, Astrophys. J., Volume 808 (2015), 36 | DOI
[23] et al. Asymmetries and outflows in the circumstellar dust of mira A, Astrophys. J., Volume 670 (2007), pp. 1347-1352 | DOI
[24] et al. Evidence for localized onset of episodic mass loss in Mira, Astron. Astrophys., Volume 642 (2020), A82 | DOI
[25] Resolving the extended atmosphere and the inner wind of Mira (o Ceti) with long ALMA baselines, Astron. Astrophys., Volume 590 (2016), A127
[26] Resolving the extended stellar atmospheres of asymptotic giant branch stars at (sub)millimetre wavelengths, Astron. Astrophys., Volume 626 (2019), A81
[27] et al. An observational study of dust nucleation in Mira (o Ceti). I. Variable features of AlO and other Al-bearing species, Astron. Astrophys., Volume 592 (2016), A42 | DOI
[28] Shock-induced polarized hydrogen emission lines in the Mira star o Ceti, Astron. Astrophys., Volume 535 (2011), A12 | DOI
[29] et al. The shock-heated atmosphere of an asymptotic giant branch star resolved by ALMA, Nat. Astron., Volume 1 (2017), pp. 848-853 | DOI
[30] et al. A detailed view on the circumstellar environment of the M-type AGB star EP Aquarii. I. High-resolution ALMA and SPHERE observations, Astron. Astrophys., Volume 642 (2020), A93 | DOI
[31] et al. The dust disk and companion of the nearby AGB star L Puppis. SPHERE/ZIMPOL polarimetric imaging at visible wavelengths, Astron. Astrophys., Volume 578 (2015), A77 | DOI
[32] et al. High-resolution observations of gas and dust around Mira using ALMA and SPHERE/ZIMPOL, Astron. Astrophys., Volume 620 (2018), A75 | DOI
[33] Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER. II. Time variations between pre-maximum and minimum light, Astron. Astrophys., Volume 597 (2017), A20 | DOI
[34] et al. Inner dusty envelope of the AGB stars W Hydrae, SW Virginis, and R Crateris using SPHERE/ZIMPOL, Astron. Astrophys., Volume 635 (2020), A200 | DOI
[35] et al. Study of the inner dust envelope and stellar photosphere of the AGB star R Doradus using SPHERE/ZIMPOL, Astron. Astrophys., Volume 591 (2016), A70 | DOI
[36] et al. A close halo of large transparent grains around extreme red giant stars, Nature, Volume 484 (2012), pp. 220-222 | DOI
[37] et al. A CO-multilayer outer atmosphere for eight evolved stars revealed with VLTI/AMBER, Mon. Not. R. Astron. Soc., Volume 489 (2019), pp. 2595-2614 | DOI
[38] et al. Spectro-imaging of the asymmetric inner molecular and dust shell region of the mira variable W Hya with MIDI/VLTI, Publ. Astron. Soc. Pac., Volume 127 (2015), pp. 732-741 | DOI
[39] Infrared interferometric three-dimensional diagnosis of the atmospheric dynamics of the AGB star R Dor with VLTI/AMBER, Astrophys. J., Volume 883 (2019), 89 | DOI
[40] et al. The K-band intensity profile of R Leonis probed by VLTI/VINCI, Astron. Astrophys., Volume 431 (2005), pp. 1019-1026 | DOI
[41] et al. The VLTI/MIDI view on the inner mass loss of evolved stars from the Herschel MESS sample, Astron. Astrophys., Volume 600 (2017), A136 | DOI
[42] et al. The light curve of the semiregular variable L Puppis - I. A recent dimming event from dust, Mon. Not. R. Astron. Soc., Volume 337 (2002), pp. 79-86 | DOI
[43] et al. The light curve of the semiregular variable L Puppis - II. Evidence for solar-like excitation of the oscillations, Mon. Not. R. Astron. Soc., Volume 361 (2005), pp. 1375-1381 | DOI
[44] The velocity centroid periodicity of L Puppis’ SiO maser emission, Astrophys. J., Volume 774 (2013), 21 | DOI
[45] et al. An edge-on translucent dust disk around the nearest AGB star, L Puppis. VLT/NACO spectro-imaging from 1.04 to 4.05 m and VLTI interferometer, Astron. Astrophys., Volume 564 (2014), A88 | DOI
[46] et al. Dissecting the AGB star L Puppis: a torus in the making, Astron. Astrophys., Volume 576 (2015), A46 (erratum Astron. Astrophys. 581, article no. C2) | DOI
[47] AMBER-NACO aperture-synthesis imaging of the half-obscured central star and the edge-on disk of the red giant L Puppis, Astron. Astrophys., Volume 581 (2015), A127 | DOI
[48] et al. Detection of highly excited OH towards AGB stars. A new probe of shocked gas in the extended atmospheres, Astron. Astrophys., Volume 623 (2019), L1 | DOI
[49] et al. Morpho-kinematics of the wind of asymptotic giant branch star L Pup, Mon. Not. R. Astron. Soc., Volume 510 (2022), pp. 2363-2378 | DOI
[50] et al. Recent mass ejection from AGB star W Hya, VJSTE, Volume 64 (2022), pp. 16-27 | DOI
[51] et al. Evidence for episodic and patchy mass ejection in the circumstellar envelope of AGB star R Leonis, Mon. Not. R. Astron. Soc., Volume 518 (2023), pp. 2034-2049 | DOI
[52] et al. Morpho-kinematics of the circumstellar envelope of the AGB star R Dor: a global view, Mon. Not. R. Astron. Soc., Volume 504 (2021), pp. 2687-2706 | DOI
[53] et al. EP Aquarii: a new picture of the circumstellar envelope, Res. Astrophys. Astron., Volume 24 (2024), 035009 | DOI
[54] et al. Mira ceti, atypical archetype, Astrophys. J., Volume 927 (2022), pp. 169-184 | DOI
[55] et al. Revealing new features of the millimetre emission of the circumbinary envelope of Mira Ceti, Mon. Not. R. Astron. Soc., Volume 495 (2020), pp. 943-961 | DOI
[56] et al. A large X-ray outburst in Mira A, Astrophys. J., Volume 623 (2005), pp. 137-140 | DOI
[57] et al. The nascent wind of AGB star R doradus: evidence for a recent episode of enhanced mass loss, Mon. Not. R. Astron. Soc., Volume 490 (2019), pp. 3329-3340 | DOI
[58] Circumstellar environment of the M-type AGB star R Doradus. APEX spectral scan at 159.0–368.5 GHz, Astron. Astrophys., Volume 615 (2018), A8 | DOI
[59] et al. ALMA detection of a tentative nearly edge-on rotating disk around the nearby AGB star R Doradus, Astron. Astrophys., Volume 614 (2018), A113 | DOI
[60] et al. Rotation of the asymptotic giant branch star R Doradus, Astron. Astrophys., Volume 613 (2018), L4
[61] et al. ALMA observations of the nearby AGB star L Puppis. II. Gas disk properties derived from CO and CO J = 3 2 emission, Astron. Astrophys., Volume 601 (2017), A5 | DOI
[62] et al. An unusual face-on spiral in the wind of the M-type AGB star EP Aquarii, Astron. Astrophys., Volume 616 (2018), A34 | DOI
[63] et al. Observation of high doppler velocity wings in the nascent wind of R Doradus, Com. Phys. Vietnam, Volume 30 (2020), pp. 85-98
[64] et al. The morpho-kinematics of the circumstellar envelope around the AGB star EP Aqr, Mon. Not. R. Astron. Soc., Volume 484 (2019), pp. 1865-1888 | DOI
[65] et al. The hydrodynamical structure of circumstellar envelopes around low mass-loss rate, low outflow velocity AGB stars, Astron. Astrophys., Volume 388 (2002), pp. 609-614 | DOI
[66] et al. Observation of narrow polar jets in the nascent wind of oxygen-rich AGB star EP Aqr, Mon. Not. R. Astron. Soc., Volume 487 (2019), pp. 622-639 | DOI
[67] et al. Contributions of rotation, expansion and line broadening to the morphology and kinematics of the inner CSE of oxygen-rich AGB star R Hya, Res. Astrophys. Astron., Volume 23 (2023), 015004 | DOI
[68] et al. VLBA observations of SiO masers towards Mira variable stars, Astron. Astrophys., Volume 414 (2004), pp. 275-288 | DOI
[69] et al. Further VLBA observations of SiO masers toward Mira variable stars, Astron. Astrophys., Volume 456 (2006), pp. 339-350 | DOI
[70] et al. Gas infall and possible circumstellar rotation in R Leonis, Astron. Astrophys., Volume 622 (2019), L14 | DOI
[71] et al. Star-planet interactions. II. Is planet engulfment the origin of fast rotating red giants?, Astron. Astrophys., Volume 593 (2016), A128 | DOI
[72] et al. A binary-induced pinwheel outflow from the extreme carbon star, AFGL 3068, Planetary Nebulae in our Galaxy and Beyond, Proceedings IAU Symposium (M. J. Barlow; R. H. Méndez, eds.), Volume 234, International Astronomical Union, Cambridge University Press, 2006, pp. 469-470 | DOI
[73] et al. Discovery of a complex spiral-shell structure around the oxygen-rich AGB star GX Monocerotis, Astron. Astrophys., Volume 636 (2020), A123 | DOI
[74] et al. The wonderful complexity of the Mira AB system, Astron. Astrophys., Volume 570 (2014), L14 | DOI
[75] et al. SPHERE/ZIMPOL observations of the symbiotic system R Aquarii. I. Imaging of the stellar binary and the innermost jet clouds, Astron. Astrophys., Volume 602 (2017), A53 | DOI
[76] et al. High-resolution observations of the symbiotic system R Aqr. Direct imaging of the gravitational effects of the secondary on the stellar wind, Astron. Astrophys., Volume 616 (2018), L3 | DOI
[77] et al. Structure and dynamics of the inner nebula around the symbiotic stellar system R Aquarii, Astron. Astrophys., Volume 651 (2021), A4 | DOI
[78] et al. ATOMIUM: A high-resolution view on the highly asymmetric wind of the AGB star 1Gruis. I. First detection of a new companion and its effect on the inner wind, Astron. Astrophys., Volume 644 (2020), A61 | DOI
[79] On the scale of photospheric convection in red giants and supergiants, Astrophys. J., Volume 195 (1975), pp. 137-144 | DOI
[80] Long-term variability in o Ceti and other Mira variables: Signs of supergranular convection?, Proceedings of the International Conference on Stellar Pulsation: Challenges for Theory and Observation (AIP Conference Proceedings), Volume 1170, American Institute of Physics, Melville, NY, 2009, pp. 164-166
[81] Long-Period Variability in o Ceti, Astrophys. J., Volume 691 (2009), pp. 1470-1478 | DOI
[82] Variability in red supergiant stars: pulsations, long secondary periods and convection noise, Mon. Not. R. Astron. Soc., Volume 372 (2006), pp. 1721-1734 | DOI
[83] et al. Near-infrared spectro-interferometry of Mira variables and comparisons to 1D dynamic model atmospheres and 3D convection simulations, Astron. Astrophys., Volume 587 (2016), A12 | DOI
[84] Rotation suppresses giant-scale solar convection, Proc. Natl. Acad. Sci. USA, Volume 118 (2021), e2022518118 | DOI | MR
[85] Magnetic fields of AGB and post-AGB stars, Proc. IAUS, Volume 343 (2019), pp. 19-26
[86] et al. A Catalog of GALEX ultraviolet emission from asymptotic giant branch stars, Astrophys. J., Volume 841 (2017), 33
[87] et al. Dynamos in asymptotic-giant-branch stars as the origin of magnetic fields shaping planetary nebulae, Nature, Volume 409 (2001), pp. 485-487 | DOI
[88] A magnetohydrodynamic model for the AGB star: preplanetary nebula symbiosis, Publ. Astron. Soc. Pac., Volume 122 (2010), pp. 1334-1340 | DOI
[89] Is Mira a magneto-dusty rotator?, Mon. Not. R. Astron. Soc., Volume 430 (2013), pp. 1359-1368 | DOI
[90] et al. Search for surface magnetic fields in Mira stars. First detection in Cygni, Astron. Astrophys., Volume 561 (2014), A85 | DOI
[91] et al. Full Stokes IQUV spectropolarimetry of AGB and post-AGB stars: probing surface magnetism and atmospheric dynamics, Proc. of the IAU, Volume 305 (2015), pp. 47-52
[92] VLBA SiO observations of bright O-rich AGB stars, Astron. Astrophys., Volume 477 (2008), pp. 853-863 | DOI
[93] et al. Full polarization study of SiO masers at 86 GHz, Astron. Astrophys., Volume 450 (2006), pp. 667-680 | DOI
[94] et al. Mapping circumstellar magnetic fields of late-type evolved stars with the Goldreich-Kylafis effect: CARMA observations at 1.3 mm of R Crt and R Leo, Astrophys. J., Volume 899 (2020), 152 | DOI
[95] Period-mass-loss rate relation of Miras with and without technetium, Astron. Astrophys., Volume 556 (2013), A38 | DOI
[96] et al. Interplay between pulsation, mass loss, and third dredge-up: More about Miras with and without technetium, Astron. Astrophys., Volume 622 (2019), A120 | DOI
[97] Meandering periods and asymmetries in light curves of Miras: Observational evidence for low mass-loss rates?, Astron. Astrophys., Volume 672 (2023), A165 | DOI
[98] A chemical study of the inner winds of asymptotic giant branch stars, Astron. Astrophys., Volume 456 (2006), pp. 1001-1012 | DOI
[99] HCN in the inner envelope of chi Cygni, Astron. Astrophys., Volume 358 (2000), L25
[100] et al. Connecting the evolution of thermally pulsing asymptotic giant branch stars to the chemistry in their circumstellar envelopes—I. Hydrogen cyanide, Mon. Not. R. Astron. Soc., Volume 456 (2016), pp. 23-46 | DOI
[101] Time series infrared spectroscopy of the Mira variable Cygni, Astrophys. J., Volume 252 (1982), pp. 697-714 | DOI
[102] Hipparcos, the New Reduction of the RawData, Astrophysics and Space Science Library, 350, Springer, Dordrecht, 2007 | DOI
[103] et al. Reprocessing the Hipparcos data of evolved stars. III. Revised Hipparcos period-luminosity relationship for galactic long-period variable stars, Astron. Astrophys., Volume 403 (2003), pp. 993-1002 | DOI
[104] VizieR Online Data Catalog, I/345, 2018
[105] Stellar radii of M giants, New Astron., Volume 3 (1998), pp. 137-156 | DOI
[106] VizieR Online Data Catalog: II/250, 2004
[107] The international variable star index (VSX), JAAVSO, Volume 35 (2006), p. 318
[108] et al. Mode switching in the nearby Mira-like variable R Doradus, Mon. Not. R. Astron. Soc., Volume 301 (1998), pp. 1073-1082 | DOI
[109] et al. Long-term photometry and periods for 261 nearby pulsating M giants, Mon. Not. R. Astron. Soc., Volume 400 (2009), pp. 1945-1961 | DOI
[110] Some small amplitude red variables of the disk and halo population, Mem. R. Astr. Soc., Volume 77 (1973), p. 159
[111] The radio continuum spectrum of Mira A and Mira B up to submillimeter wavelengths, Astron. Astrophys., Volume 586 (2016), A69 | DOI
[112] et al. Water isotopologues in the circumstellar envelopes of M-type AGB stars, Astron. Astrophys., Volume 602 (2017), A14 | DOI
[113] et al. The wind of W Hydrae as seen by Herschel. I. The CO envelope, Astron. Astrophys., Volume 561 (2014), A5 | DOI
[114] et al. The wind of W Hydrae as seen by Herschel. II. The molecular envelope of W Hydrae, Astron. Astrophys., Volume 570 (2014), A67 | DOI
[115] Precessing planetary magnetospheres in SiO stars?. First detection of quasi-periodic polarization fluctuations in R Leonis and V Camelopardalis, Astron. Astrophys., Volume 498 (2009), pp. 801-810 | DOI
[116] Modeling CO emission from Mira’s wind, Astrophys. J., Volume 547 (2001), pp. 384-392 | DOI
[117] et al. New observations and models of circumstellar CO line emission of AGB stars in the Herschel SUCCESS programme, Astron. Astrophys., Volume 581 (2015), A60 | DOI
[118] et al. Dust and molecular shells in asymptotic giant branch stars, Astron. Astrophys., Volume 545 (2012), A56 | DOI
[119] et al. The keck aperture masking experiment: multiwavelength observations of six mira variable, Astrophys. J., Volume 673 (2008), pp. 418-433 | DOI
[120] et al. The keck aperture masking experiment: spectro-interferometry of three mira variables from 1.1 to 3.8 m
[121] et al. The evolving shapes of o Ceti and R Leonis, Astrophys. J., Volume 689 (2008), pp. 1289-1294 | DOI
[122] et al. Dusty wind of W Hydrae. Multi-wavelength modelling of the present-day and recent mass loss, Astron. Astrophys., Volume 577 (2015), A114 | DOI
[123] et al. Interferometric observations of R Leonis in the K band. First direct detection of the photospheric pulsation and study of the atmospheric intensity distribution, Astron. Astrophys., Volume 345 (1999), pp. 221-232
[124] et al. Multi-wavelength bispectrum speckle interferometry of R Leo and comparison with Mira star models, Astron. Astrophys., Volume 376 (2001), pp. 518-531 | DOI
[125] et al. An observational study of dust nucleation in Mira (o Ceti). II. Titanium oxides are negligible for nucleation at high temperatures, Astron. Astrophys., Volume 599 (2017), A59 | DOI
[126] et al. Sulphur-bearing molecules in AGB stars. I. The occurrence of hydrogen sulphide, Astron. Astrophys., Volume 606 (2017), A124 | DOI
[127] et al. Sulphur molecules in the circumstellar envelopes of M-type AGB stars, Astron. Astrophys., Volume 588 (2016), A119 | DOI
[128] et al. Morphology and kinematics of the gas envelope of Mira Ceti, Mon. Not. R. Astron. Soc., Volume 460 (2016), pp. 673-688 | DOI
[129] et al. ALMA observations of the vibrationally excited rotational CO transition v = 1, J = 3 2 towards five AGB stars, Mon. Not. R. Astron. Soc., Volume 463 (2016), L74 | DOI
[130] et al. ALMA observations of W Hya: impact of missing baselines, JKAS, Volume 54 (2021), pp. 171-182
[131] Poster Presented at the ALMA2019: Science Results and Cross-facility Synergies, Cagliari, 2019 | DOI
[132] Imaging the radio photospheres of mira variables, Astrophys. J., Volume 671 (2007), pp. 2068-2073 | DOI
[133] et al. The evolving radio photospheres of long-period variable stars, Astron. J., Volume 156 (2018), 15 | DOI
[134] SiO, SiO, and SiO emission from 67 oxygen-rich stars: a survey of 61 maser lines from 7 to 1 mm, ApJS, Volume 253 (2021), 44 | DOI
[135] Maser emission from the CO envelope of the asymptotic giant branch star W Hydrae, Astron. Astrophys., Volume 654 (2021), A18
[136] et al. SIO masers in asymmetric miras. I. R Leonis, Astrophys. J., Volume 704 (2009), pp. 170-182 | DOI
[137] et al. Mapping the circumstellar SiO maser emission in R Leonis, Astron. Astrophys., Volume 468 (2007), L1 | DOI
[138] et al. SiO masers from AGB stars in the vibrationally excited v = 1, v = 2, and v = 3 states, Astron. Astrophys., Volume 565 (2014), A127
[139] et al. The SIMBAD astronomical database. The CDS reference database for astronomical objects, Astron. Astrophys., Volume 143 (2000), pp. 9-22
[140] VizieR Online Data Catalog: B/GCVS, 2009
[141] et al. Astron. Astrophys., 649 (2021), A1
[142] et al. The Synergy between VLBI and Gaia astrometry, Proceedings of the 14th European VLBI Network Symposium & Users Meeting, Granada, Volume 344, EVN publications, 2019, 43 | DOI
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