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http://hdl.handle.net/20.500.12386/23603
Titolo: | Early Optical Spectra of Nova V1369 Cen Show the Presence of Lithium | Autori: | IZZO, LUCA DELLA VALLE, Massimo MASON, Elena Matteucci, Francesca ROMANO, Donatella Pasquini, Luca Vanzi, Leonardo Jordan, Andres Fernandez, José Miguel Bluhm, Paz Brahm, Rafael Espinoza, Nestor Williams, Robert |
Data pubblicazione: | 2015 | Rivista: | THE ASTROPHYSICAL JOURNAL LETTERS | Numero: | 808 | Fascicolo: | 1 | Da pagina:: | L14 | Abstract: | We present early high-resolution spectroscopic observations of the nova V1369 Cen. We have detected an absorption feature at 6695.6 Å that we have identified as blueshifted <SUP>7</SUP>Li i λ6708 Å. The absorption line, moving at -550 km s<SUP>-1</SUP>, was observed in five high-resolution spectra of the nova obtained at different epochs. Based on the intensity of this absorption line, we infer that a single nova outburst can inject in the Galaxy {M}<SUB>{Li</SUB>} = 0.3-4.8 × 10<SUP>-10</SUP> {M}<SUB>☉ </SUB>. Given the current estimates of the Galactic nova rate, this amount is sufficient to explain the puzzling origin of the overabundance of lithium observed in young star populations. | Acknowledgments: | We thank the referee for constructive comments/criticisms that have improved the paper and Steven Shore, Marina Orio, and Paolo Molaro for useful discussions. We are grateful to Roland Gredel for DDT programme 091.A-9032 B. | URI: | http://hdl.handle.net/20.500.12386/23603 | URL: | https://iopscience.iop.org/article/10.1088/2041-8205/808/1/L14 | ISSN: | 2041-8205 | DOI: | 10.1088/2041-8205/808/1/L14 | Bibcode ADS: | 2015ApJ...808L..14I | Fulltext: | open |
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