Atmospheric molecular blobs shape up circumstellar envelopes of AGB stars – Nature

0
37


  • Habing, H. J. & Olofsson, H. Asymptotic Giant Branch Stars (Springer, 2004).

  • Adam, C. & Ohnaka, K. Exploring the innermost dust formation region of the oxygen-rich AGB star IK Tauri with VLT/SPHERE-ZIMPOL and VLTI/AMBER. Astron. Astrophys. 628, A132 (2019).

    Article 
    ADS 

    Google Scholar
     

  • Khouri, T. et al. Study of the inner dust envelope and stellar photosphere of the AGB star R Doradus using SPHERE/ZIMPOL. Astron. Astrophys. 591, A70 (2016).

    Article 

    Google Scholar
     

  • Khouri, T. et al. Inner dusty envelope of the AGB stars W Hydrae, SW Virginis, and R Crateris using SPHERE/ZIMPOL. Astron. Astrophys. 635, A200 (2020).

    Article 
    CAS 

    Google Scholar
     

  • Ohnaka, K., Weigelt, G. & Hofmann, K.-H. Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER. Astron. Astrophys. 589, A91 (2016).

    Article 
    ADS 

    Google Scholar
     

  • Ohnaka, K., Weigelt, G. & Hofmann, K.-H. 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. 597, A20 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Takigawa, A., Kamizuka, T., Tachibana, S. & Yamamura, I. Dust formation and wind acceleration around the aluminum oxide-rich AGB star W Hydrae. Sci. Adv. 3, eaao2149 (2017).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Vlemmings, W. et al. The shock-heated atmosphere of an asymptotic giant branch star resolved by ALMA. Nat. Astron. 1, 848–853 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Khouri, T. et al. High-resolution observations of gas and dust around Mira using ALMA and SPHERE/ZIMPOL. Astron. Astrophys. 620, A75 (2018).

    Article 
    CAS 

    Google Scholar
     

  • Gottlieb, C. A. et al. ATOMIUM: ALMA tracing the origins of molecules in dust forming oxygen rich M-type stars. Astron. Astrophys. 660, A94 (2022).

    Article 
    CAS 

    Google Scholar
     

  • Wittkowski, M. et al. Aperture synthesis imaging of the carbon AGB star R Sculptoris. Detection of a complex structure and a dominating spot on the stellar disk. Astron. Astrophys. 601, A3 (2017).

    Article 

    Google Scholar
     

  • Paladini, C. et al. Large granulation cells on the surface of the giant star π1 Gruis. Nature 553, 310–312 (2018).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Leão, I. C., de Laverny, P., Mékarnia, D., de Medeiros, J. R. & Vandame, B. The circumstellar envelope of IRC+10216 from milli-arcsecond to arcmin scales. Astron. Astrophys. 455, 187–194 (2006).

    Article 
    ADS 

    Google Scholar
     

  • Stewart, P. N. et al. The weather report from IRC+10216: evolving irregular clouds envelop carbon star. Mon. Not. R. Astron. Soc. 455, 3102–3109 (2016).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Siebert, M. A., Van de Sande, M., Millar, T. J. & Remijan, A. J. Investigating anomalous photochemistry in the inner wind of IRC+10216 through interferometric observations of HC3N. Astrophys. J. 941, 90 (2022).

    Article 
    ADS 

    Google Scholar
     

  • Montargès, M. et al. A dusty veil shading Betelgeuse during its Great Dimming. Nature 594, 365–368 (2021).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Ramstedt, S. et al. The circumstellar envelope around the S-type AGB star W Aql. Astron. Astrophys. 605, A126 (2017).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Decin, L. et al. (Sub)stellar companions shape the winds of evolved stars. Science 369, 1497–1500 (2020).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Freytag, B., Liljegren, S. & Höfner, S. Global 3D radiation-hydrodynamics models of AGB stars. Effects of convection and radial pulsations on atmospheric structures. Astron. Astrophys. 600, A137 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Cernicharo, J., Marcelino, N., Agúndez, M. & Guélin, M. Molecular shells in IRC+10216: tracing the mass loss history. Astron. Astrophys. 575, A91 (2015).

    Article 
    ADS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Sozzetti, A., Smart, R. L., Drimmel, R., Giacobbe, P. & Lattanzi, M. G. Evidence for orbital motion of CW Leonis from ground-based astrometry. Mon. Not. R. Astron. Soc. 471, L1–L5 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Menten, K. M., Reid, M. J., Kamiński, T. & Claussen, M. J. The size, luminosity, and motion of the extreme carbon star IRC+10216 (CW Leonis). Astron. Astrophys. 543, A73 (2012).

    Article 
    ADS 

    Google Scholar
     

  • Weigelt, G. et al. 76mas Speckle-masking interferometry of IRC+10216 with the SAO 6m telescope: Evidence for a clumpy shell structure. Astron. Astrophys. 333, L51–L54 (1998).

    ADS 

    Google Scholar
     

  • Chiavassa, A. & Freytag, B. 3D hydrodynamical simulations of evolved stars and observations of stellar surfaces. In Proc. of a Conference at University Campus, Vienna, Austria on why galaxies care about AGB stars III: a closer look in space and time (eds. by Kerschbaum, F. et al.) (Astronomical Society of the Pacific, 2015).

  • Höfner, S. & Freytag, B. 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. 623, A158 (2019).

    Article 
    ADS 

    Google Scholar
     

  • Martínez, L. et al. Prevalence of non-aromatic carbonaceous molecules in the inner regions of circumstellar envelopes. Nat. Astron. 4, 97–105 (2020).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Cernicharo, J. et al. Discovery of SiCSi in IRC+10216: a missing link between gas and dust carriers of Si-C bonds. Astrophys. J. Lett. 806, L3 (2015).

    Article 
    ADS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Decin, L. et al. ALMA data suggest the presence of spiral structure in the inner wind of CW Leonis. Astron. Astrophys. 574, A5 (2015).

    Article 

    Google Scholar
     

  • Guélin, M. et al. IRC+10216 in 3D: morphology of a TP-AGB star envelope. Astron. Astrophys. 610, A4 (2018).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Ireland, M. J. & Scholz, M. Observable effects of dust formation in dynamic atmospheres of M-type Mira variables. Mon. Not. R. Astron. Soc. 367, 1585–1593 (2006).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Norris, B. R. M. et al. A close halo of large transparent grains around extreme red giant stars. Nature 484, 220–222 (2012).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Van de Sande, M. et al. Determining the effects of clumping and porosity on the chemistry in a non-uniform AGB outflow. Astron. Astrophys. 616, A106 (2018).

    Article 

    Google Scholar
     

  • Ridgway, S. & Keady, J. J. The IRC+10216 circumstellar envelope. II. Spatial measurements of the dust. Astrophys. J. 326, 843 (1988).

    Article 
    ADS 

    Google Scholar
     

  • Men’shchikov, A. B., Balega, Y., Blöcker, T., Osterbart, R. & Weigelt, G. Structure and physical properties of the rapidly evolving dusty envelope of IRC+10216 reconstructed by detailed two-dimensional radiative transfer modeling. Astron. Astrophys. 368, 497–526 (2001).

    Article 
    ADS 

    Google Scholar
     

  • McMullin, J. P., Waters, B., Schiebel, D., Young, W. & Golap, K. CASA architecture and applications. Publ. Astron. Soc. Pac. 376, 127 (2007).

  • Högbom, J. A. Aperture synthesis with a non-regular distribution of interferometer baselines. Astron. Astrophys. Suppl. 15, 417 (1974).

    ADS 

    Google Scholar
     

  • Steer, D. G., Dewdney, P. E. & Ito, M. R. Enhancements to the deconvolution algorithm ‘CLEAN’. Astron. Astrophys. 137, 159–165 (1984).

    ADS 

    Google Scholar
     

  • Reid, M. J. et al. The distance to the center of the galaxy: H 2O maser proper motions in Sagittarius B2(N). Astrophys. J. 330, 809 (1988).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Lucas, R. 1.3 MM Plateau de Bure observations of IRC+10216. Astrophys. Space Sci. 251, 247–250 (1997).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Fonfría, J. P. et al. The complex dust formation zone of the AGB star IRC+10216 probed with CARMA 0.25 arcsec angular resolution molecular observations. Mon. Not. R. Astron. Soc. 445, 3289–3308 (2014).

    Article 
    ADS 

    Google Scholar
     

  • Groenewegen, M. A. T. et al. An independent distance estimate to CW Leonis. Astron. Astrophys. 543, L8 (2012).

    Article 
    ADS 

    Google Scholar
     

  • Freytag, B., Holweger, H., Steffen, M. & Ludwig, H.-G. On the scale of photospheric convection. In Proc. of the ESO workshop: Science with the VLT Interferometer 316 (Springer, 1997).

  • Weigelt, G. et al. Bispectrum speckle interferometry of IRC+10216: the dynamic evolution of the innermost circumstellar environment from 1995 to 2001. Astron. Astrophys. 392, 131–141 (2002).

    Article 
    ADS 

    Google Scholar
     

  • Monnier, J. D. et al. Mid-infrared interferometry on spectral lines. II. Continuum (dust) emission around IRC+10216 and VY Canis Majoris. Astrophys. J. 543, 861–867 (2000).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Tuthill, P. G., Monnier, J. D., Danchi, W. C. & Lopez, B. Smoke signals from IRC+10216. I. Milliarcsecond proper motions of the dust. Astrophys. J. 543, 284–290 (2000).

    Article 
    ADS 

    Google Scholar
     

  • Leão, I. C., de Laverny, P., Mekarnia, D., de Medeiros, J. R. & Vandame, B. Observations of the AGB star IRC+10216 from milliarcsec to arcmin spatial scales. Publ. Astron. Soc. Pac. 378, 309 (2007).

  • Kim, H. et al. Multiepoch optical images of IRC+10216 tell about the central star and the adjacent environment. Astrophys. J. 914, 35 (2021).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Kim, H., Lee, H.-G., Mauron, N. & Chu, Y.-H. HST images reveal dramatic changes in the core of IRC+10216. Astrophys. J. Lett. 804, L10 (2015).

    Article 
    ADS 

    Google Scholar
     

  • Agúndez, M., Martínez, J. I., de Andres, P. L., Cernicharo, J. & Martín-Gago, J. A. Chemical equilibrium in AGB atmospheres: successes, failures, and prospects for small molecules, clusters, and condensates. Astron. Astrophys. 637, A59 (2020).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Cernicharo, J. Laboratory astrophysics and astrochemistry in the Herschel/ALMA era. EAS Publ. Ser. 58, 251–261 (2012).

  • Cherchneff, I. The inner wind of IRC+10216 revisited: new exotic chemistry and diagnostic for dust condensation in carbon stars. Astron. Astrophys. 545, A12 (2012).

    Article 
    ADS 

    Google Scholar
     

  • Soker, N. Binary progenitor models for bipolar planetary nebulae. Astrophys. J. 496, 833–841 (1998).

    Article 
    ADS 

    Google Scholar
     

  • Guelin, M., Lucas, R. & Cernicharo, J. MgNC and the carbon-chain radicals in IRC+10216. Astron. Astrophys. 280, L19–L22 (1993).

    ADS 
    CAS 

    Google Scholar
     

  • Velilla-Prieto, L. et al. IRC+10°216 mass loss properties through the study of λ 3 mm emission. Large spatial scale distribution of SiO, SiS, and CS. Astron. Astrophys. 629, A146 (2019).

    Article 
    CAS 

    Google Scholar
     

  • Mastrodemos, N. & Morris, M. Bipolar preplanetary nebulae: hydrodynamics of dusty winds in binary systems. I. Formation of accretion disks. Astrophys. J. 497, 303–329 (1998).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Mastrodemos, N. & Morris, M. Bipolar pre-planetary nebulae: hydrodynamics of dusty winds in binary systems. II. Morphology of the circumstellar envelopes. Astrophys. J. 523, 357–380 (1999).

    Article 
    ADS 

    Google Scholar
     

  • De Nutte, R. et al. Nucleosynthesis in AGB stars traced by oxygen isotopic ratios. I. Determining the stellar initial mass by means of the 17O/18O ratio. Astron. Astrophys. 600, A71 (2017).

    Article 

    Google Scholar
     

  • Kim, H. & Taam, R. E. Wide binary effects on asymmetries in asymptotic giant branch circumstellar envelopes. Astrophys. J. 759, 59 (2012).

    Article 
    ADS 

    Google Scholar
     

  • Malfait, J. et al. SPH modelling of wind-companion interactions in eccentric AGB binary systems. Astron. Astrophys. 652, A51 (2021).

    Article 

    Google Scholar
     

  • Maes, S. et al. Route towards complete 3D hydro-chemical simulations of companion-perturbed AGB outflows. In Proc. of the International Astronomical Union on the Origin of Outflows in Evolved Stars (eds. Decin, L. et al.) (Cambridge Univ. Press, 2021).

  • Aydi, E. & Mohamed, S. 3D models of the circumstellar environments of evolved stars: formation of multiple spiral structures. Mon. Not. R. Astron. Soc. 513, 4405–4430 (2022).

    Article 
    ADS 
    CAS 

    Google Scholar
     



  • Source link