Chapter: Molecular Spectroscopy
Giesen, Schlemmer

Section: Introduction (25)

Detection of molecules in space via spectroscopy

Information obtained from laboratory spectroscopy: line positions, bands, intensities; use

for astronomy: identification, column density, temperatures, relative velocities and/or velocity distributions.

Unassigned Spectral features: (SED), DIB, UIR, U-lines

Wavelength ranges: UV/vis, IR, sub-mm (THz), mm, cm with selected recent examples

Maier: UV/vis spectroscopy of Radicals and Ions: CnH, C2n cyclic, C2Al, C7-

Salama, Allamandola and Huisken: CRD of PAHs in the visible

Oomens, Saykally: PAHs, PAH cations, diamondoids, TinCm

Grabow, Harvard: cm-mm (-40 GHz) spectroscopy (FTMW) of CnX, X=Si, H, H2,..

Zuirys: (-500 GHz) Metalcompounds

Alonso: cm-mm (FTMW) organic and prebiotic molecules, amino acids, …

Cologne/JPL/Lille/Ohio: mm/sub-mm (-3 THz): light hydrides (NH3), small radicals(CH2), low lying bending vibrations(C3H,Cn), complex molecules: DME, EME, weeds

The role of databases

Topics not covered:

Perrin/Paris: IR spectra of molecules in planetary atmospheres

Tennyson: polyatomic species in stellar atmospheres, highly excited species

Section: spectroscopy of potential carriers of the DIBs

Maier (20)

Section: IR spectroscopy of PAHs

Oomens (20)

Section: IR and FIR spectroscopy of Pure carbon chain molecules

Giesen (20)

Section: Spectroscopy of complex molecules

Schlemmer/Giesen/Lewen (20)

Section: New trends: negative ions, organic and prebiotic molecules, …