Mass loss and evolution of stars and star clusters: a personal historical perspective

H.J.G.L.M. Lamers

Mass loss and evolution of stars and star clusters: a personal historical perspective

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

Abstract

The development and progress of the studies of winds and mass loss from hot stars, from about 1965 up to now, is discussed in a personal historical perspective. The present state of knowledge about stellar winds, based on papers presented at this workshop, is described. About ten years ago the mechanisms of the winds were reasonably well understood, the mass loss rates were known, and the predictions of stellar evolution theory with mass loss agreed with observations. However, recent studies especially those based on FUSE observations, have resulted in a significant reduction of the mass loss rates, that disagrees with predictions from radiation driven wind models. The situation is discussed and future studies that can clarify the situation are suggested. I also discuss what is known about the dissolution of star clusters in different environments. The dissolution time can be derived from the mass and age distributions of cluster samples. The resulting dissolution times of clusters in the solar neighborhood (SN) and in interacting galaxies are shorter than predicted by two-body relaxation of clusters in a tidal field. Encounters with giant molecular clouds can explain the fate of clusters in the SN and are the most likely cause of the short lifetime of clusters in interacting galaxies.

Original language	Undefined/Unknown
Title of host publication	Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006
Editors	A. de Koter, L.J. Smith, L.B.F.M. Waters
Place of Publication	San Francisco
Publisher	Astronomical Society of the Pacific
Pages	443-464
Number of pages	471
ISBN (Print)	978-1-58381-644-8
Publication status	Published - 2008

Publication series

Name	Astronomical Society of the Pacific conference series
Number	388

Access to Document

443
Open Access (free)
Final published version, 436 KB

Cite this

Lamers, H. J. G. L. M. (2008). Mass loss and evolution of stars and star clusters: a personal historical perspective. In A. de Koter, L. J. Smith, & L. B. F. M. Waters (Eds.), Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006 (pp. 443-464). (Astronomical Society of the Pacific conference series; No. 388). Astronomical Society of the Pacific.

Lamers, H.J.G.L.M. / Mass loss and evolution of stars and star clusters: a personal historical perspective. Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006. editor / A. de Koter ; L.J. Smith ; L.B.F.M. Waters. San Francisco : Astronomical Society of the Pacific, 2008. pp. 443-464 (Astronomical Society of the Pacific conference series; 388).

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Lamers, HJGLM 2008, Mass loss and evolution of stars and star clusters: a personal historical perspective. in A de Koter, LJ Smith & LBFM Waters (eds), Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006. Astronomical Society of the Pacific conference series, no. 388, Astronomical Society of the Pacific, San Francisco, pp. 443-464.

Mass loss and evolution of stars and star clusters: a personal historical perspective. / Lamers, H.J.G.L.M.
Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006. ed. / A. de Koter; L.J. Smith; L.B.F.M. Waters. San Francisco: Astronomical Society of the Pacific, 2008. p. 443-464 (Astronomical Society of the Pacific conference series; No. 388).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

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AB - The development and progress of the studies of winds and mass loss from hot stars, from about 1965 up to now, is discussed in a personal historical perspective. The present state of knowledge about stellar winds, based on papers presented at this workshop, is described. About ten years ago the mechanisms of the winds were reasonably well understood, the mass loss rates were known, and the predictions of stellar evolution theory with mass loss agreed with observations. However, recent studies especially those based on FUSE observations, have resulted in a significant reduction of the mass loss rates, that disagrees with predictions from radiation driven wind models. The situation is discussed and future studies that can clarify the situation are suggested. I also discuss what is known about the dissolution of star clusters in different environments. The dissolution time can be derived from the mass and age distributions of cluster samples. The resulting dissolution times of clusters in the solar neighborhood (SN) and in interacting galaxies are shorter than predicted by two-body relaxation of clusters in a tidal field. Encounters with giant molecular clouds can explain the fate of clusters in the SN and are the most likely cause of the short lifetime of clusters in interacting galaxies.

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Lamers HJGLM. Mass loss and evolution of stars and star clusters: a personal historical perspective. In de Koter A, Smith LJ, Waters LBFM, editors, Mass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006. San Francisco: Astronomical Society of the Pacific. 2008. p. 443-464. (Astronomical Society of the Pacific conference series; 388).