====== Spectroscopy  ======
All spectra are processed with [[http://spcaudace.free.fr/|SpcAudace]] a spectra reduction and analysis software developed since 2004 by Benjamin Mauclaire. Based on [[http://audela.org/dokuwiki/doku.php/en/start|AudeLA]], it runs under Microsoft, GNU/Linux and MacOS X, in French and English.
It offers an automatic approach to spectrum reduction via powerful pipelines. It takes the user from pre-processing to the production of the line profile calibrated and corrected for various deformations to be ready to use in a web page (PNG file) or in a database such as BeSS. Its astrophysical functionalities allow you to easily exploit the scientific information contained in your spectra.

Click on the spectral class to explore the gathered spectra.

^ Spectral Class ^ Mass $M/M_{\odot}$ ^ Lifetime on Main Sequence [My] ^ Effective Temperature [K] ^ Radius $R / R_{\odot}$ ^ Luminosity $L / L_{\odot}$ ^
| O |
| [[spectral_class_b|B]] | $3-18$ | $\sim 10-300$     | $10500 - 25000$ | $3.0 - 8.4$ | $95 - 52000$ |
| [[spectral_class_a|A]] | $2-3$  | $\sim 300 - 2000$ | $7500 - 10500$  | $1.7 - 2.7$ | $8 - 55$ |
| F |
| G |
| K |
| M |

====== Books ======
Recommended books
^ Title ^ Author(s) ^ Publisher ^ Book Cover ^
| [[ https://www.shelyak.com/produit/dc0029-spectroscopy-practical-guide/?lang=en | Successfully Starting in Astronomical Spectroscopy $-$ A Practical Guide]] | François Cochard | EDP Sciences | {{:bookcover.successfully.starting.in.astronomical.spectroscopy.jpeg?nolink&100|}} |
| [[ https://www.cambridge.org/core/books/spectroscopy-for-amateur-astronomers/8723E6F224E339B5A94966C5D0F19A20 | Spectroscopy for Amateur Astronomers ]] | Marc F. M. Trypsteen and Richard Walker | Cambridge University Press | {{:bookcover.spectroscopy.for.amateur.astronomers.jpeg?nolink&100|}} |
| [[ https://www.cambridge.org/core/books/spectral-atlas-for-amateur-astronomers/32126CD730EBA49238F9318C16B90523 | Spectral Atlas for Amateur Astronomers ]] | Richard Walker | Cambridge University Press | {{:bookcover.spectralatlas.for.amateur.astronomers.jpeg?nolink&100|}} |

====== Spectroscopy Databases ======
[[ https://www.eso.org/sci/facilities/paranal/decommissioned/isaac/tools/lib.html | ESO Library of Stellar Spectra]]
[[ https://britastro.org/specdb/ | BAA Spectroscopy Database ]]