Rotational and Rotational-Vibrational Raman Spectroscopy of Air to Characterize Astronomical Spectrographs.
- Vogt FPA European Southern Observatory (ESO), Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile.
- Kerber F European Southern Observatory (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching, Germany.
- Mehner A European Southern Observatory (ESO), Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile.
- Yu S Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, 91109, USA.
- Pfrommer T European Southern Observatory (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching, Germany.
- Lo Curto G European Southern Observatory (ESO), Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile.
- Figueira P European Southern Observatory (ESO), Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile.
- Parraguez D European Southern Observatory (ESO), Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile.
- Pepe FA Observatoire Astronomique de l'Université de Genève, 51 chemin des Maillettes, 1290 Versoix, Switzerland.
- Mégevand D Observatoire Astronomique de l'Université de Genève, 51 chemin des Maillettes, 1290 Versoix, Switzerland.
- Riva M Osservatorio Astronomico di Brera, INAF, Via Bianchi 46, 23807 Merate, Italy.
- Di Marcantonio P Osservatorio Astronomico di Trieste, INAF, Via Tiepolo 11, 34143 Trieste, Italy.
- Lovis C Observatoire Astronomique de l'Université de Genève, 51 chemin des Maillettes, 1290 Versoix, Switzerland.
- Amate M Instituto de Astrofísica de Canarias, C/. Vía Láctea, 38200 La Laguna, Tenerife, Spain.
- Molaro P Osservatorio Astronomico di Trieste, INAF, Via Tiepolo 11, 34143 Trieste, Italy.
- Cabral A Faculdade de Ciências, Instituto de Astrofísica e Ciências do Espaço, Universidade de Lisboa, Campo Grande, Edifício C8, 1749-016 Lisboa, Portugal.
- Osorio MRZ Centro de Astrobiología (CSIC-INTA), Carretera de Ajalvir km 4, Torrejón de Ardoz, 28850 Madrid, Spain.
- 2019-09-07
Published in:
- Physical review letters. - 2019
English
Raman scattering enables unforeseen uses for the laser guide-star system of the Very Large Telescope. Here, we present the observation of one up-link sodium laser beam acquired with the ESPRESSO spectrograph at a resolution λ/Δλ∼140 000. In 900 s on source, we detect the pure rotational Raman lines of ^{16}O_{2}, ^{14}N_{2}, and ^{14}N^{15}N (tentatively) up to rotational quantum numbers J of 27, 24, and 9, respectively. We detect the ^{16}O_{2} fine-structure lines induced by the interaction of the electronic spin S and end-over-end rotational angular momentum N in the electronic ground state of this molecule up to N=9. The same spectrum also reveals the ν_{1←0} rotational-vibrational Q-branch for ^{16}O_{2} and ^{14}N_{2}. These observations demonstrate the potential of using laser guide-star systems as accurate calibration sources for characterizing new astronomical spectrographs.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.123.061101
- PMID 31491188
- Persistent URL
- https://sonar.ch/global/documents/46774
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