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Related papers: Mass loss from red giants in the Magellanic Clouds

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We describe a new method for robustly testing theoretical predictions of red giant evolution near the tip of the giant branch. When theoretical cumulative luminosity functions are shifted to align the tip in I-band and normalized at a…

Astrophysics · Physics 2016-08-15 Eric L. Sandquist , André R. Martel

Over much of the initial mass function, stars are destined to become luminous and cool red giants. They may then be able to produce dust in an atmosphere which has been elevated by strong radial pulsations, and hence drive a wind. The…

Astrophysics · Physics 2014-10-13 Jacco Th. van Loon

Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting the initial conditions for the formation of stars. We…

Astrophysics · Physics 2008-10-16 Alberto D. Bolatto , Adam K. Leroy , Erik Rosolowsky , Fabian Walter , Leo Blitz

The Magellanic Clouds (MCs) offer a unique opportunity to study the stellar evolution and nucleosynthesis of massive Asymptotic Giant Branch (AGB) stars in low metallicity environments where distances are known. Rubidium is a key element to…

Solar and Stellar Astrophysics · Physics 2015-03-17 D. A. Garcia-Hernandez

This paper presents the chemical abundance analysis of a sample of 27 red giant stars located in 4 popolous intermediate-age globular clusters in the Large Magellanic Cloud, namely NGC 1651, 1783, 1978 and 2173. This analysis is based on…

Astrophysics · Physics 2009-11-13 A. Mucciarelli , E. Carretta , L. Origlia , F. R. Ferraro

The empirical evidence for an upper mass limit for the red supergiant (RSG) progenitors of the Type II-P SNe at about 18 Msun, raises questions about the fate of the most luminous, most massive RSGs. These stars may evolve back to warmer…

Solar and Stellar Astrophysics · Physics 2023-07-12 Roberta M. Humphreys , Terry J. Jones , John C. Martin

In order to reconstruct the global SEDs of the Magellanic Clouds over eight decades in spectral range, we combined literature flux densities representing the entire LMC and SMC respectively, and complemented these with maps extracted from…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 F. P. Israel , W. F. Wall , D. Raban , W. T. Reach , C. Bot , J. B. R. Oonk , N. Ysard , J. P. Bernard

We present clumps of dust emission from Herschel observations of the Large Magellanic Cloud (LMC) and their physical and statistical properties. We catalog cloud features seen in the dust emission from Herschel observations of the LMC, the…

We present an overview of, and first science results from, the Magellanic Edges Survey (MagES), an ongoing spectroscopic survey mapping the kinematics of red clump and red giant branch stars in the highly substructured periphery of the…

Astrophysics of Galaxies · Physics 2020-07-22 L. R. Cullinane , A. D. Mackey , G. S. Da Costa , S. E. Koposov , V. Belokurov , D. Erkal , A. Koch , A. Kunder , D. M. Nataf

A straightforward interpretation of the MACHO microlensing results in the direction of the Magellanic Clouds suggests that an important fraction of the baryonic dark matter component of our Galaxy is in the form of old white dwarfs. If…

Astrophysics · Physics 2007-05-23 Harvey B. Richer

The Ks-band magnitude distribution of carbon-rich and oxygen-rich asymptotic giant branch stars within Local Group galaxies like the Magellanic Clouds, NGC 6822, M33 and SagDIG is easily obtained from ground-based observations. Appropriate…

Astrophysics · Physics 2009-11-13 Maria-Rosa L. Cioni

We aim to investigate mass loss and luminosity in a large sample of evolved stars in several Local Group galaxies with a variety of metalliticies and star-formation histories: the Small and Large Magellanic Cloud, and the Fornax, Carina,…

Solar and Stellar Astrophysics · Physics 2018-01-31 Martin A. T. Groenewegen , Greg C. Sloan

Recent observations of microlensing events in the Large Magellanic Cloud suggest that a sizeable fraction of the galactic halo is in form of MACHOs with mass less than abou 0.1 M_{\odot}. Here we argue that molecular clouds (mainly H_2)…

Astrophysics · Physics 2007-05-23 F. De Paolis , G. Ingrosso , Ph. Jetzer , M. Roncadelli

Robust reddening maps of the Large and Small Magellanic Clouds (LMC/SMC) are crucial for a wide range of astrophysical studies, including the calibration of the cosmic distance ladder, investigations of stellar populations in…

Context: We present a newly discovered class of low-luminosity, dusty, evolved objects in the Magellanic Clouds. These objects have dust excesses, stellar parameters, and spectral energy distributions similar to those of dusty…

Solar and Stellar Astrophysics · Physics 2016-02-03 D. Kamath , P. R. Wood , H. Van Winckel , J. D. Nie

We have identified seven red supergiants (RSGs) in the Large Magellanic Cloud (LMC) and four RSGs in the Small Magellanic Cloud (SMC), all of which have spectral types that are considerably later than the average type observed in their…

Astrophysics · Physics 2009-06-23 Emily M. Levesque , Philip Massey , K. A. G. Olsen , Bertrand Plez

The mass-loss rates of red supergiant stars (RSGs) are poorly constrained by direct measurements, and yet the subsequent evolution of these stars depends critically on how much mass is lost during the RSG phase. In 2012 the Geneva…

It has been proposed that the Galaxy might contain a population of cold clouds in numbers sufficient to account for a substantial fraction of the total mass of the Galaxy. These clouds would have masses of the order of 10^{-3} Solar mass…

Astrophysics · Physics 2009-10-31 Roman R. Rafikov , Bruce T. Draine

This paper presents a summary of four invited and twelve contributed presentations on asymptotic giant branch stars and red supergiants, given over the course of two afternoon splinter sessions at the 19th Cool Stars Workshop. It highlights…

Solar and Stellar Astrophysics · Physics 2016-12-07 Patricia A. Whitelock , Martha Boyer , Susanne Höfner , Markus Wittkowski , Albert A. Zijlstra

Accurate determination of mass-loss rates from massive stars is important to understanding stellar and galactic evolution and enrichment of the interstellar medium. Large-scale structure and variability in stellar winds have significant…