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@Article{Aringer:2016,
author = {{Aringer}, B. and {Girardi}, L. and {Nowotny}, W. and {Marigo}, P. and
{Bressan}, A.},
title = "{Synthetic photometry for M and K giants and stellar evolution: hydrostatic dust-free model atmospheres and chemical abundances}",
journal = {\mnras},
keywords = {molecular data, stars: AGB and post-AGB, stars: atmospheres, stars: evolution, Hertzsprung-Russell and colour-magnitude diagrams, stars: late-type, Astrophysics - Solar and Stellar Astrophysics},
year = "2016",
month = "Apr",
volume = {457},
number = {4},
pages = {3611-3628},
doi = {10.1093/mnras/stw222},
archivePrefix = {arXiv},
eprint = {1601.07025},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2016MNRAS.457.3611A},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@ARTICLE{Begemann:1997,
author = {{Begemann}, B. and {Dorschner}, J. and {Henning}, Th. and
{Mutschke}, H. and {G{\"u}rtler}, J. and {K{\"o}mpe}, C. and {Nass}, R.},
title = "{Aluminum Oxide and the Opacity of Oxygen-rich Circumstellar Dust in the 12-17 Micron Range}",
journal = {\apj},
keywords = {Stars: Circumstellar Matter, ISM: Dust, Extinction, Infrared: ISM: Lines and Bands, Stars: Late-Type},
year = 1997,
month = feb,
volume = {476},
number = {1},
pages = {199-208},
doi = {10.1086/303597},
adsurl = {https://ui.adsabs.harvard.edu/abs/1997ApJ...476..199B},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@article{Elitzur:2001,
author = {{Elitzur}, Moshe and {Ivezi{\'c}}, {\v{Z}}eljko},
title = {{Dusty winds - I. Self-similar solutions}},
journal = {\mnras},
year = {2001},
volume = {327},
pages = {403-421},
month = Oct,
adsnote = {Provided by the SAO/NASA Astrophysics Data System},
adsurl = {https://ui.adsabs.harvard.edu/#abs/2001MNRAS.327..403E},
doi = {10.1046/j.1365-8711.2001.04706.x},
keywords = {STARS: AGB AND POST-AGB, CIRCUMSTELLAR MATTER, STARS: LATE-TYPE, STARS: WINDS, OUTFLOWS, DUST, EXTINCTION, INFRARED: STARS, Astrophysics},
}
@ARTICLE{Henning:1995,
author = {{Henning}, T. and {Begemann}, B. and {Mutschke}, H. and {Dorschner}, J.},
title = "{Optical properties of oxide dust grains.}",
journal = {\aaps},
keywords = {DUST, EXTINCTION, INFRARED: STARS, ISM: LINES AND BANDS, CIRCUMSTELLAR MATTER, STARS: AGB: POST-AGB, METHODS: LABORATORY},
year = 1995,
month = jul,
volume = {112},
pages = {143},
adsurl = {https://ui.adsabs.harvard.edu/abs/1995A&AS..112..143H},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@ARTICLE{Jaeger:1998,
author = {{Jaeger}, C. and {Molster}, F.~J. and {Dorschner}, J. and
{Henning}, Th. and {Mutschke}, H. and {Waters}, L.~B.~F.~M.},
title = "{Steps toward interstellar silicate mineralogy. IV. The crystalline revolution}",
journal = {\aap},
keywords = {LINE: IDENTIFICATION, METHODS: LABORATORY, CIRCUMSTELLAR MATTER, INFRARED: ISM: LINES AND BANDS, INFRARED: STARS},
year = 1998,
month = nov,
volume = {339},
pages = {904-916},
adsurl = {https://ui.adsabs.harvard.edu/abs/1998A&A...339..904J},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@Article{Ossenkopf:1992,
author = {{Ossenkopf}, V. and {Henning}, T. and {Mathis}, J.~S.},
title = {{Constraints on cosmic silicates.}},
journal = {\aap},
year = {1992},
volume = {261},
pages = {567-578},
month = Aug,
adsnote = {Provided by the SAO/NASA Astrophysics Data System},
adsurl = {https://ui.adsabs.harvard.edu/#abs/1992A&A...261..567O},
keywords = {Interstellar Matter, Silicates, Stellar Envelopes, Astronomical Models, Iron, Magnetite, Opacity, Silicon Carbides, Astrophysics},
}
@Article{Orosz:2017,
author = {{Orosz}, G. and {Imai}, H. and {Dodson}, R. and {Rioja}, M.~J. and {Frey}, S. and {Burns}, R.~A. and {Etoka}, S. and {Nakagawa}, A. and {Nakanishi}, H. and {Asaki}, Y. and {Goldman}, S.~R. and {Tafoya}, D.},
title = {{Astrometry of OH/IR Stars Using 1612 MHz Hydroxyl Masers. I. Annual Parallaxes of WX Psc and OH138.0+7.2}},
journal = {\aj},
year = {2017},
volume = {153},
month = Mar,
adsnote = {Provided by the SAO/NASA Astrophysics Data System},
adsurl = {https://ui.adsabs.harvard.edu/#abs/2017AJ....153..119O},
doi = {10.3847/1538-3881/153/3/119},
keywords = {astrometry, masers, stars: AGB and post-AGB, stars: individual: WX Psc, OH 138.0+7.2, techniques: interferometric, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Instrumentation and Methods for Astrophysics},
}
@article{Ueta:2003,
author = {Ueta, T. and Meixner, M.},
title = {2-DUST: A Dust Radiative Transfer Code for an Axisymmetric System},
journal = {\apj},
year = {2003},
volume = {586},
pages = {1338-1355},
month = apr,
abstract = {We have developed a general purpose dust radiative transfer code for an axisymmetric system, 2-DUST, motivated by the recent increasing availability of high-resolution images of circumstellar dust shells at various wavelengths. This code solves the equation of radiative transfer following the principle of long characteristic in a two-dimensional polar grid while considering a three-dimensional radiation field at each grid point. A solution is sought through an iterative scheme in which self-consistency of the solution is achieved by requiring a global luminosity constancy throughout the shell. The dust opacities are calculated through Mie theory from the given size distribution and optical properties of the dust grains. The main focus of the code is to obtain insights on (1) the global energetics of dust grains in the shell and (2) the two-dimensional projected morphologies that are strongly dependent on the mixed effects of the axisymmetric dust distribution and inclination angle of the shell. Here test models are presented with discussion of the results. The code can be supplied with a user-defined density distribution function and, thus, is applicable to a variety of dusty astronomical objects possessing the axisymmetric geometry.},
doi = {10.1086/367818},
eprint = {astro-ph/0212523},
keywords = {Stars: Circumstellar Matter, ISM: Dust, Extinction, Infrared: Stars, Methods: Numerical, Radiative Transfer},
url = {http://adsabs.harvard.edu/abs/2003ApJ...586.1338U},
}
@article{Sargent:2010,
author = {Sargent, B. A. and Srinivasan, S. and Meixner, M. and Kemper, F. and Tielens, A. G. G. M. and Speck, A. K. and Matsuura, M. and Bernard, J.-P. and Hony, S. and Gordon, K. D. and Indebetouw, R. and Marengo, M. and Sloan, G. C. and Woods, P. M.},
title = {The Mass-loss Return from Evolved Stars to the Large Magellanic Cloud. II. Dust Properties for Oxygen-rich Asymptotic Giant Branch Stars},
journal = {\apj},
year = {2010},
volume = {716},
pages = {878-890},
month = jun,
abstract = {We model multi-wavelength broadband UBVIJHK$_{s}$ and Spitzer IRAC and MIPS photometry and Infrared Spectrograph spectra from the SAGE and SAGE-Spectroscopy observing programs of two oxygen-rich asymptotic giant branch (O-rich AGB) stars in the Large Magellanic Cloud (LMC) using radiative transfer (RT) models of dust shells around stars. We chose a star from each of the bright and faint O-rich AGB populations found by earlier studies of the SAGE sample in order to derive a baseline set of dust properties to be used in the construction of an extensive grid of RT models of the O-rich AGB stars found in the SAGE surveys. From the bright O-rich AGB population, we chose HV 5715, and from the faint O-rich AGB population we chose SSTISAGE1C J052206.92-715017.6 (SSTSAGE052206). We found the complex indices of refraction of oxygen-deficient silicates from Ossenkopf et al. and a power law with exponential decay grain size distribution like what Kim et al. used but with {$\gamma$} of -3.5, a $_{min}$ of 0.01 {$\mu$}m, and a $_{0}$ of 0.1 {$\mu$}m to be reasonable dust properties for these models. There is a slight indication that the dust around the faint O-rich AGB may be more silica-rich than that around the bright O-rich AGB. Simple models of gas emission suggest a relatively extended gas envelope for the faint O-rich AGB star modeled, consistent with the relatively large dust shell inner radius for the same model. Our models of the data require the luminosity of SSTSAGE052206 and HV 5715 to be \~{}5100 L $_{sun}$ and \~{}36,000 L $_{sun}$, respectively. This, combined with the stellar effective temperatures of 3700 K and 3500 K, respectively, that we find best fit the optical and near-infrared data, suggests stellar masses of \~{}3 M $_{sun}$ and \~{}7 M $_{sun}$. This, in turn, suggests that HV 5715 is undergoing hot-bottom burning and that SSTSAGE052206 is not. Our models of SSTSAGE052206 and HV 5715 require dust shells of inner radius \~{}17 and \~{}52 times the stellar radius, respectively, with dust temperatures there of 900 K and 430 K, respectively, and with optical depths at 10 {$\mu$}m through the shells of 0.095 and 0.012, respectively. The models compute the dust mass-loss rates for the two stars to be 2.0 {\times} 10$^{-9}$ M$_{sun}$ yr$^{-1}$ and 2.3 {\times} 10$^{-9}$ M$_{sun}$ yr$^{-1}$, respectively. When a dust-to-gas mass ratio of 0.002 is assumed for SSTSAGE052206 and HV 5715, the dust mass-loss rates imply total mass-loss rates of 1.0 {\times} 10$^{-6}$ M$_{sun}$ yr$^{-1}$ and 1.2 {\times} 10$^{-6}$ M$_{sun}$ yr$^{-1}$, respectively. These properties of the dust shells and stars, as inferred from our models of the two stars, are found to be consistent with properties observed or assumed by detailed studies of other O-rich AGB stars in the LMC and elsewhere.},
archiveprefix = {arXiv},
doi = {10.1088/0004-637X/716/1/878},
eprint = {1407.6996},
keywords = {circumstellar matter, infrared: stars, stars: AGB and post-AGB},
primaryclass = {astro-ph.SR},
url = {https://ui.adsabs.harvard.edu/abs/2010ApJ...716..878S},
}
@ARTICLE{Sargent:2010,
author = {{Sargent}, Benjamin A. and {Srinivasan}, S. and {Meixner}, M. and
{Kemper}, F. and {Tielens}, A.~G.~G.~M. and {Speck}, A.~K. and
{Matsuura}, M. and {Bernard}, J. -Ph. and {Hony}, S. and
{Gordon}, Karl D. and {Indebetouw}, R. and {Marengo}, M. and
{Sloan}, G.~C. and {Woods}, Paul M.},
title = "{The Mass-loss Return from Evolved Stars to the Large Magellanic Cloud. II. Dust Properties for Oxygen-rich Asymptotic Giant Branch Stars}",
journal = {\apj},
keywords = {circumstellar matter, infrared: stars, stars: AGB and post-AGB, Astrophysics - Solar and Stellar Astrophysics, 85A04},
year = 2010,
month = jun,
volume = {716},
number = {1},
pages = {878-890},
doi = {10.1088/0004-637X/716/1/878},
archivePrefix = {arXiv},
eprint = {1407.6996},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2010ApJ...716..878S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@article{Srinivasan:2011,
author = {{Srinivasan}, S. and {Sargent}, B.~A. and {Meixner}, M.},
title = "{The mass-loss return from evolved stars to the Large Magellanic Cloud. V. The GRAMS carbon-star model grid}",
journal = {\aap},
keywords = {stars: AGB and post-AGB, radiative transfer, stars: carbon, stars: mass-loss, circumstellar matter, Magellanic Clouds, Astrophysics - Solar and Stellar Astrophysics},
year = "2011",
month = "Aug",
volume = {532},
eid = {A54},
pages = {A54},
doi = {10.1051/0004-6361/201117033},
archivePrefix = {arXiv},
eprint = {1106.3256},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2011A&A...532A..54S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@ARTICLE{Goldman:2017,
author = {{Goldman}, Steven R. and {van Loon}, Jacco Th. and
{Zijlstra}, Albert A. and {Green}, James A. and {Wood}, Peter R. and
{Nanni}, Ambra and {Imai}, Hiroshi and {Whitelock}, Patricia A. and
{Matsuura}, Mikako and {Groenewegen}, Martin A.~T. and
{G{\'o}mez}, Jos{\'e} F.},
title = "{The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity}",
journal = {\mnras},
keywords = {masers, stars: AGB and post-AGB, stars: mass-loss, supergiants, stars: winds, outflows, Magellanic Clouds, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
year = 2017,
month = feb,
volume = {465},
number = {1},
pages = {403-433},
doi = {10.1093/mnras/stw2708},
archivePrefix = {arXiv},
eprint = {1610.05761},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.465..403G},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@Article{Goldman:2018,
author = {{Goldman}, Steven R. and {van Loon}, Jacco Th. and {G{\'o}mez}, Jos{\'e} F. and {Green}, James A. and {Zijlstra}, Albert A. and {Nanni}, Ambra and {Imai}, Hiroshi and {Whitelock}, Patricia A. and {Groenewegen}, Martin A.~T. and {Oliveira}, Joana M.},
title = {{A dearth of OH/IR stars in the Small Magellanic Cloud}},
journal = {\mnras},
year = {2018},
volume = {473},
pages = {3835-3853},
month = Jan,
adsnote = {Provided by the SAO/NASA Astrophysics Data System},
adsurl = {https://ui.adsabs.harvard.edu/#abs/2018MNRAS.473.3835G},
doi = {10.1093/mnras/stx2601},
keywords = {masers, stars: AGB and post-AGB, stars: mass-loss, supergiants, stars: winds, outflows, Magellanic Clouds, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
}
@Article{Goldman:2019b,
author = {Goldman, S. R. and Boyer, M. L. and McQuinn, K. B. and Sloan, G. C. and McDonald, I. and van Loon, J. T. and Zijlstra, A. A. and Hirschauer, A. S. and Skillman, E. D. and Srinivasan, S.},
title = {AGB Stars in the Nearby Dwarf Galaxy: Leo P},
journal = {ApJ},
year = {2019},
volume = {884},
pages = {152},
month = sep,
abstract = {We have conducted a highly sensitive census of the evolved-star population in the metal-poor dwarf galaxy Leo P and detected four asymptotic giant branch (AGB) star candidates. Leo P is one of the best examples of a nearby analog of high-redshift galaxies because of its primitive metal content (2\% of the solar value), proximity, and isolated nature, ensuring a less complicated history. Using medium-band optical photometry from the Hubble Space Telescope (HST), we have classified the AGB candidates by their chemical type. We have identified one oxygen-rich source which appears to be dusty in both the HST and Spitzer observations. Its brightness, however, suggests it may be a planetary nebula or post-AGB object. We have also identified three carbon-rich candidates, one of which may be dusty. Follow-up observations are needed to confirm the nature of these sources and to study the composition of any dust that they produce. If dust is confirmed, these stars would likely be among the most metal-poor examples of dust-producing stars known and will provide valuable insight into our understanding of dust formation at high redshift.},
archiveprefix = {arXiv},
doi = {10.3847/1538-4357/ab418a},
eprint = {1909.01454},
keywords = {Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
primaryclass = {astro-ph.SR},
url = {https://ui.adsabs.harvard.edu/abs/2019ApJ...884..152G/abstract},
}
@article{Nanni:2019,
author = {Nanni, A. and Groenewegen, M. A. T. and Aringer, B. and Rubele, S. and Bressan, A. and van Loon, J. T. and Goldman, S. R. and Boyer, M. L.},
title = {The mass-loss, expansion velocities, and dust production rates of carbon stars in the Magellanic Clouds},
journal = {\mnras},
year = {2019},
volume = {487},
pages = {502-521},
month = jul,
abstract = {The properties of carbon stars in the Magellanic Clouds (MCs) and their total dust production rates are predicted by fitting their spectral energy distributions (SED) over pre-computed grids of spectra reprocessed by dust. The grids are calculated as a function of the stellar parameters by consistently following the growth for several dust species in their circumstellar envelopes, coupled with a stationary wind. Dust radiative transfer is computed taking as input the results of the dust growth calculations. The optical constants for amorphous carbon are selected in order to reproduce different observations in the infrared and optical bands of Gaia Data Release 2. We find a tail of extreme mass-losing carbon stars in the Large Magellanic Cloud (LMC) with low gas-to-dust ratios that is not present in the Small Magellanic Cloud (SMC). Typical gas-to-dust ratios are around 700 for the extreme stars, but they can be down to {\tilde}160-200 and {\tilde}100 for a few sources in the SMC and in the LMC, respectively. The total dust production rate for the carbon star population is {\tilde}1.77 {\plusmn} 0.45 {\times} 10$^{-5}$ M$_{&sun; }$yr$^{-1}$, for the LMC, and {\tilde}2.52 {\plusmn} 0.96 {\times} 10$^{-6 }$M$_{&sun;}$ yr$^{-1}$, for the SMC. The extreme carbon stars observed with the Atacama Large Millimeter Array and their wind speed are studied in detail. For the most dust-obscured star in this sample the estimated mass-loss rate is {\tilde}6.3 {\times} 10$^{-5}$ M$_{&sun;}$ yr$^{-1}$. The grids of spectra are available at:$^{1}$ and included in the SED-fitting python package for fitting evolved stars.$^{2}$},
archiveprefix = {arXiv},
doi = {10.1093/mnras/stz1255},
eprint = {1904.06702},
keywords = {stars: AGB and post-AGB, stars: carbon, circumstellar matter, stars: mass-loss, stars: winds, outflows, Magellanic Clouds},
primaryclass = {astro-ph.SR},
url = {https://ui.adsabs.harvard.edu/abs/2019MNRAS.487..502N},
}
@ARTICLE{Wiegert:2020,
author = {{Wiegert}, J. and {Groenewegen}, M.~A.~T. and {Jorissen}, A. and
{Decin}, L. and {Danilovich}, T.},
title = "{How to disentangle geometry and mass-loss rate from AGB-star spectral energy distributions -- The case of EP Aqr}",
journal = {arXiv e-prints},
keywords = {Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
year = 2020,
month = aug,
eid = {arXiv:2008.11525},
pages = {arXiv:2008.11525},
archivePrefix = {arXiv},
eprint = {2008.11525},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2020arXiv200811525W},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@ARTICLE{Zubko:1996,
author = {{Zubko}, V.~G. and {Mennella}, V. and {Colangeli}, L. and
{Bussoletti}, E.},
title = "{Optical constants of cosmic carbon analogue grains - I. Simulation of clustering by a modified continuous distribution of ellipsoids}",
journal = {\mnras},
keywords = {STARS: CARBON, CIRCUMSTELLAR MATTER, DUST, EXTINCTION},
year = 1996,
month = oct,
volume = {282},
number = {4},
pages = {1321-1329},
doi = {10.1093/mnras/282.4.1321},
adsurl = {https://ui.adsabs.harvard.edu/abs/1996MNRAS.282.1321Z},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}