Spectral line profiles of the hydrogen Balmer lines of 16 white dwarfs in the open star cluster NGC 2099

Spectral line profiles of the hydrogen Balmer lines of 16 white dwarfs in the open star cluster NGC 2099 with model fits (in red) courtesy of Pierre Bergeron. The first six objects (WD 1- WD 7) have the highest signal-to-noise ratio and were obtained with Gemini/GMOS-North. The remaining stars (Keck objects) have lower signal-to-noise but have bluer spectral coverage (hence the fitting of the higher order Balmer lines).

Créditos:

International Gemini Observatory/NOIRLab/NSF/AURA

About the Image

Id:geminiann05001b
Tipo:Chart
Release date:27 de Enero de 2005 a las 05:00
Related announcements:geminiann05001
Size:500 x 499 px

Sobre el Objeto

Nombre:NGC 2099
Categoría:Illustrations

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