Astronomy on MSN

What is the origin of the letters used in star classification?

What is the origin of the letters used in star classification? Why didn't astronomers use ABCD? J. HaldimanChicago, Illinois ...
Nature

New Types of Emission Spectra

THE emission spectra which we observe in the visible and ultra-violet region are divided into line and band spectra, of which the first type corresponds to electronic changes of state of single atoms ...
JSTOR Daily

Direct Analysis of Spectra of the Unusual Type Ib Supernova 2005bf

This is the metadata section. Skip to content viewer section. ABSTRACT Synthetic spectra generated with the parameterized supernova synthetic spectrum code SYNOW are compared to spectra of the unusual ...
JSTOR Daily

Comparative Direct Analysis of Type Ia Supernova Spectra. IV. Postmaximum

David Branch, David J. Jeffery, Jerod Parrent, E. Baron, M. A. Troxel, V. Stanishev, Melissa Keithley, Joshua Harrison, Christopher Bruner Publications of the ...