Claus Leitherer

Space Telescope Science Institute

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Timothy M. Heckman

Johns Hopkins University

Karl D. Gordon

Space Telescope Science Institute

Daniela Calzetti

University of Massachusetts Amherst

A. Nota

International Space Science Institute

Alessandra Aloisi

Space Telescope Science Institute

Aida Wofford

Ensenada Institute of Technology

Lisa J. Kewley

ARC Centre of Excellence for All-sky Astrophysics

R. M. González Delgado

Instituto de Astrofísica de Andalucía

C. W. Engelbracht

University of Arizona

M. Meixner

Space Telescope Science Institute

Cooperative Institutions

Space Telescope Science Institute

219

Johns Hopkins University

123

Goddard Space Flight Center

100

Max Planck Society

California Institute of Technology

Centre National de la Recherche Scientifique

University of Arizona

Max Planck Institute for Astronomy

European Southern Observatory

Association of Universities For Research In Astronomy

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Dating Young Stellar Objects in the Magellanic Clouds

M. Sewiło Elena Sabbi Morgan Dwyer M. Meixner Thomas Robitaille

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Theoretical continuum energy distributions for Wolf-Rayet stars

Publications of the Astronomical Society of the Pacific (1992)

W. Schmütz Claus Leitherer Ruth Gruenwald

We discuss the problem of assigning an effective temperature to models of stellar evolution in the Wolf-Rayet stage. We conclude that it is best to use models with different velocity laws depending on the stellar temperature. We follow the most simple approach and propose to use a standard law with Beta = 1 for the cooler and Beta = 2 for the hotter Wolf-Rayet stars. We present energy distributions from non-LTE model calculations with a Beta = 2 velocity law. The new calculations together with published results based on Beta = 1 allow one to synthesize realistic spectra of starburst regions. The flux tables are available in digital form from the authors.

Wolf–Rayet star

10.1086/133104

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The Star Formation History of NGC 1705: A Poststarburst Galaxy on the Verge of Activity

The Astronomical Journal (2003)

F. Annibali L. Greggio M. Tosi Alessandra Aloisi Claus Leitherer

We infer the star formation history in different regions of the blue compact dwarf NGC 1705 by comparing synthetic color-magnitude diagrams with the Hubble Space Telescope optical and near-infrared photometry. We find that NGC 1705 is not a young galaxy, because its star formation commenced at least 5 Gyr ago. On the other hand, we confirm the existence of a recent burst of star formation between 15 and 10 Myr ago. We also find evidence for new strong activity, which started 3 Myr ago and is still continuing. The old population is spread across the entire galaxy, while the young and intermediate stars are more concentrated in the central regions. We derive an almost continuous star formation with variable rate and exclude the presence of long quiescent phases between the episodes during the last ≈1 Gyr. The central regions experienced an episode of star formation of ∼0.07 M⊙ yr-1 (for a Salpeter initial mass function [IMF]) 15 to 10 Myr ago. This coincides with the strong activity in the central super–star cluster. We find a rate of ∼0.3 M⊙ yr-1 for the youngest ongoing burst, which started ∼3 Myr ago. This is higher than in other dwarfs and comparable to the rate of NGC 1569. The star formation rate of earlier episodes is not especially high and falls in the range 10-3 to 10-1 M⊙ yr-1. The IMF is close to the Salpeter value or slightly steeper.

Initial mass function

Intergalactic star

10.1086/379556

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VizieR Online Data Catalog: Radiative contribution from stripped stars (Goetberg+, 2019)

VizieR Online Data Catalog (2019)

Y. Goetberg S. E. de Mink J. H. Groh Claus Leitherer Colin Norman

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Photoionization models of NGC 2363

Revista Mexicana de Astronomía y Astrofísica (2000)

V. Luridiana M. Peimbert Claus Leitherer

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Atlas of high-dispersion spectra of peculiar emission-line stars in the Magellanic clouds

Astronomy & Astrophysics Supplement Series (1985)

O. Stahl B. Wolf M. de Groot Claus Leitherer

Spectres a haute dispersion de 24 des etoiles les plus brillantes a raie d'emission dans les Nuages de Magellan. Liste des mesures de vitesse radiale des raies de Balmer. Donnees photometriques UBVRIJHKLM de ces etoiles et de supergeantes bleues MC supplementaires

Balmer series

Large Magellanic Cloud

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Fos-Assisted GHRS Target Acquisition

Claus Leitherer Anuradha Koratkar O. L. Lupie Steve Hulbert

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Spitzer SAGE Observations of Young Stellar Objects in the Large Magellanic Cloud

American Astronomical Society Meeting Abstracts (2006)