EARLY OPTICAL SPECTRA OF NOVA V1369 CEN SHOW THE PRESENCE OF LITHIUM
EARLY OPTICAL SPECTRA OF NOVA V1369 CEN SHOW THE PRESENCE OF LITHIUM
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DOI：
10.1088/2041-8205/808/1/l14
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发表时间：
2015-06
期刊：
影响因子：
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通讯作者：
L. Izzo;M. Valle;E. Mason;F. Matteucci;D. Romano;L. Pasquini;L. Vanzi;A. Jordán;J. Fernández;P. Bluhm;R. Brahm;N. Espinoza;Robert Williams
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作者：
L. Izzo;M. Valle;E. Mason;F. Matteucci;D. Romano;L. Pasquini;L. Vanzi;A. Jordán;J. Fernández;P. Bluhm;R. Brahm;N. Espinoza;Robert Williams
我们介绍了新星V1369 Cen的早期高分辨率光谱观测。我们已经检测到6695.6？处的吸收特征，我们已确定为蓝移的7Li Iλ6708？在不同时期获得的五个新星的高分辨率光谱中，观测到了在−550公里处移动的吸收线S−1。根据这条吸收线的强度，我们推测一次新星爆发可以注入星系M Li？>；=0.3-4.8×10−10M⊙？>；考虑到目前对银河系新星速率的估计，这一数量足以解释在年轻恒星群中观察到的锂元素过多的令人费解的来源。
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 7Li i λ6708 Å. The absorption line, moving at −550 km s−1, 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 Li ?> = 0.3–4.8 × 10−10 M ⊙ ?> . 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.