Spectral star classification

Spectral star classification

R620/0231 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 7.1MB

Downloadable file size: 812.2KB

Price image Pricing

Please login to use the price calculator

This image is part of the feature B B C


Restrictions: This image may not be used to state or imply NOAO endorsement of any company or product

Caption: Spectral star classification. Comparison of the visible light spectra (400-700 nanometres, rainbow bands) of 13 types of stars. The types (from top to bottom) are O6.5, B0, B6, A1, A5, F0, F5, G0, G5, K0, K5, M0, M5. Our Sun is a G2-type star. The order OBAFGKM ranks the stellar spectral types in order of decreasing surface temperature, while the numbers 0-9 provide sub-types. An O-type would be hotter than 25,000 Kelvin (K) and appear blue. An M-type would appear red and be cooler than 3500K. The dark spectral bands show stellar composition.

Release details: Model release not required. Property release not required.

Keywords: astronomy, astrophysics, classification, classifications, classify, colour, comparison, cosmology, letter, letters, light, obafgkm, optical, rainbow colours, science, sequence, sequences, spectra, spectral, spectrometry, spectrophotometric, spectrophotometry, spectroscope, spectroscopes, spectroscopic, spectrum, star, stars, stellar, taxonomical, taxonomy, type, types, visible

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.