Multiwavelength Systematics of O-Type Spectra Nolan R. Walborn Space Telescope Science Institute...
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Transcript of Multiwavelength Systematics of O-Type Spectra Nolan R. Walborn Space Telescope Science Institute...
Multiwavelength Systematics of O-Type Spectra
Nolan R. Walborn
Space Telescope Science Institute
Chandra X-Ray Spectroscopy
Workshop, July 11-13, 2007
X-Ray Collaborators: Wayne Waldron, Joy Nichols, Nancy Evans, Nathan MillerOptical/UV Collaborators: Ian Howarth, Danny Lennon, Alex Fullerton
Walborn Diagram
OpticalO MainSequence
N IV/IIIHe II/I
UV O Main Sequence (No Si IV)
UV OB Main Sequence (No Si IV)
OpticalEarly OSupergiantSequence
N IV/III
OpticalOBSupergiantSequence
Si IV/III/II
UV OSupergiantSequence
Si IV!
UV BSupergiantSequence
Si IV!
FUV O Supergiant Sequence (O VI, C III)
Optical O Luminosity Sequence (He II λ4686, N III λ4640)
UV O Luminosity Sequence (Si IV! 45 eV)
FUV O Luminosity Sequence (S IV 47 eV, C III 48 eV, P V 65 eV but low abundance!)
X-Ray OBSupergiantSequence
Si XIV/XIIIMg XII/XINe X/IXO VIII/VII
X-Ray OBMainSequence
Si XIV/XIIIMg XII/XINe X/IXO VIII/VII
X-Ray OLuminositySequences
X-Ray OLuminositySequences
X-Ray OBPeculiarObjects