Poster Open Access

Relation of Observable Stellar Parameters to Mass-Loss Rate of AGB Stars in the LMC

Prager, Henry; Willson, Lee Anne; Marengo, Massimo; Creech-Eakman, Michelle


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    "description": "<p>Mass loss in Asymptotic Giant Branch (AGB) stars has historically proven difficult to characterize accurately.<br>\nThis is due to a multitude of factors such as differing composition--including chemistry, metallicity, and differences in carbon and oxygen ratios--and differences in their ongoing motion--particularly, differing pulsation modes.&nbsp;<br>\nIn mass-loss formulations, the mass-loss rate depends on some combinations of stellar parameters, including but not limited to pulsation period, mass, and luminosity.</p>\n\n<p>Using a combination of stellar models and archival data, we have been working at improving the relation between these parameters and the mass-loss rate of the stars. We have used the models and data to improve on the period-mass-luminosity and radius-mass-luminosity relations for M and C stars in both the fundamental and overtone pulsation modes. Current work is focused on accounting for any remaining sources of scatter in the relation between $\\dot{M}$ and our parameters $P$, $L$, and $M$.</p>", 
    "language": "eng", 
    "title": "Relation of Observable Stellar Parameters to Mass-Loss Rate of AGB Stars in the LMC", 
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    "references": [
      "Riebel et al. (2012). THE MASS-LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD. VI. LUMINOSITIES AND MASS-LOSS RATES ON POPULATION SCALES.", 
      "Trabucchi et al. (2018). Modelling long-period variables \u2013 I. A new grid of O-rich and C-rich pulsation models.", 
      "Willson (2000). MASS LOSS FROM COOL STARS: Impact on the Evolution of Stars and Stellar Populations.", 
      "Willson (2009). Big, Cool, and Losing Mass: Dependence of Mass Loss Rates on L, R, M and Z.", 
      "Willson and Marengo (2012). Miras.", 
      "Harris, C.R., Millman, K.J., van der Walt, S.J. et al. (2020). Array programming with NumPy.", 
      "Virtanen et al. (2020). SciPy 1.0: Fundamental Algorithms for Scientific Computing in Python.", 
      "Hunter, J.D. (2007). Matplotlib: A 2D graphics environment."
    ], 
    "keywords": [
      "Post main sequence cool stars", 
      "stars", 
      "AGB", 
      "mass loss"
    ], 
    "publication_date": "2021-02-26", 
    "creators": [
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        "orcid": "0000-0002-0658-6175", 
        "affiliation": "New Mexico Tech", 
        "name": "Prager, Henry"
      }, 
      {
        "orcid": "0000-0001-7921-8739", 
        "affiliation": "Iowa State University", 
        "name": "Willson, Lee Anne"
      }, 
      {
        "orcid": "0000-0001-9910-9230", 
        "affiliation": "Iowa State University", 
        "name": "Marengo, Massimo"
      }, 
      {
        "affiliation": "New Mexico Tech", 
        "name": "Creech-Eakman, Michelle"
      }
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      "dates": "March 2-4, 2021", 
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      "title": "The 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun"
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