SOME ASPECTS OF GISBERT’S CAREER Eric Herbst The Ohio State University
Curriculum Vitae • • • 1936 Birth (Karlsruhe, Germany) 1967 Ph. D. (Duke Univ. , spectrum of HSSH) 1967 -68 Postdoc, Duke Univ. 1968 -70 Postdoc, NRC (with Costain/Oka) 1970 -71 Asst. Prof. , Univ. Brit. Columbia 1971 -72 Visiting Scientist, NRC 1972 -79 Astronomer, MPIf. R 1979 Chair in Physics, Univ. of Koeln Honors: Max-Planck Research Prize; Phillip Morris Prize; Marci-Medal; Historic Medal of Charles University
I. Physikalisches Institut, Koeln • Size: 100 people (students, researchers, machinists, etc. ) • Ph. D’s granted: 100 • Yearly funds: 8 000 euros • Construction of astronomical hardware for a variety of telescopes in-house (KOSMA, SWAS, HIFI, SOFIA)
SOME CAREER HIGHLIGHTS • ASTRONOMY • 1) New species & isotopes • 2) Maps & physical conditions (e. g. CI & CO) • 3) Cologne telescope • 4) Development (e. g. AOS’s) • SPECTROSCOPY • 1) mm/submm studies including intracavity work • 2) THz studies • 3) IR studies • 4) Database
SOME SPECTROSCOPIC EQUIPMENT • THz spectrometers (BWO sources up to 3 THz, sideband source 1. 6 -2. 1 THz; used for study of rotation, torsion, bending vibrations of radicals and normal species) • OROTRON intracavity mm-wave spectrometer; up to 400 GHz; 3 orders of magnitude enhancement in sensitivity (van der Waals species, etc) --------------------------frequency-stabilized ring laser for IR work
The Russian Connection • BWO’s supplied by ISTOK Research and Production Company (Fryazino, Moscow Region) • Tunable millimeter-wave synthesizers supplied by Institute of Electronic Measurement, KVARZ, Nizhnii Novgorod • Orotron – Russian Academy of Sciences
HSSH AND BRETHREN HSSH HSOH HOOH
And another look…. . The middle species, HSOH, took many years to learn how to produce! Winnewisser et al. (2003)
HSSH (disulfane) c-type transitions G. Winnewisser, Ph. D thesis (1967)
Some Unusual Aspects of HSSH • Nearly perfect accidental symmetric top • Ortho-para structure • Internal rotation over 4 p radians
2843 cm -1 2037 cm -1 Rotational-Torsional Levels
Note: ortho-para intensity variation!
HSOH r. Q 0 -BRANCH Winnewisser et al. (2003)
trans-Ethyl Methyl Ether U. Fuchs et al. (2003)
Rotational Spectra of Radicals Some examples of recent years: CH 2 NH NH 2 PH PS CP CF CN Plus the ion HCS+ through 1 THz
interstellar
CH 2 Michael et al. (2003)
Low Frequency Bending of C 3 Sideband spectrometer Also infrared studies – see G. Fuchs (2003)
KAO Confirmed by ISO Giesen et al. (2001)
NEW INTERSTELLAR MOLECULES • HNC **(lab; 1976) • Vinyl cyanide (1975; Sgr B 2) • Formic acid HCOOH (1975; Sgr B 2) • CH 3 CCCCH (1984: TMC-1) • NH 2 D (1985; 3 clouds) • Three 13 C isotopomers of HCCCN (1975, 1977; Sgr B 2, fractionation),
TMC-1 In 1978, Churchwell, Winnewisser, and Walmsley put TMC-1 on the map (despite thunderstorm; pointing errors) “Molecular Observations of a Possible Proto-Solar Nebula in a Dark Cloud in Taurus” In the following, we will refer to this small cloud as the Taurus Molecular Cloud 1, or TMC 1…….
TMC-1 CP
Kölner Observatorium für Submm-Astronomie
HISTORY OF KOSMA • 1984 • 1985 • 1995 KOSMA 3 -m first light move to Gornergrat new dish and mount
SELECTED KOSMA CO and CI STUDIES • 2003: Virgo cluster spiral galaxies • 2002: CI emission from star-forming regions (1 -0 & 2 -1) • 2000: Cepheus B cloud • 2000: high latitude cloud MBM 32 • 2000: galactic 5 kpc ring • 1998: Rosette molecular complex • 1998: Comet Hyakutake • 1991: fragmentation in California nebulae • 1991: L 1495 survey • 1990: nearest cloud (L 1457): fragmentation
Latest CO and C I Studies (The New Generation) • New array receiver: 2 X 4 pixel 490/810 GHz (SMART) (Graf et al. ) • C I: ability to study 1 -0 (492 GHz) and 2 -1 (809 GHz) fine-structure lines simultaneously • CO J=7 -6
Non-Kosma C I studies • Heinrich-Hertz telescope: 1997 – Study of starburst galaxy M 82 using 1 -0 and 21 simultaneously • Antarctic Submillimeter Telescope & Remote Observatory: 1997 – Study of cold, low density clouds towards the galactic center broad-line emission
Some Recent Observations • Excited HCN in the protoplanetary nebula CRL 618 (2003) with MPIf. R (Bonn); deduction of physical conditions • Unusual isomers of CO in Rho Ophiuchi (e. g. 13 C 17 O) based on precise laboratory data (2001 -2003) • SWAS
PRESENT & FUTURE WORK • SPECTROSCOPY – – IR studies of carbon clusters (C 8) Mm-wave studies of van der Waals species Free radicals at THz frequencies (CH 2) Molecular ions • ASTRONOMY – SOFIA & HERSCHEL (HIFI) – Database for THz astronomy (CDMS)
DEAR GISBERT, Best wishes for the future, and thank you for all of the happy and exciting times we have spent and will continue to spend together.
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