DISCOVERY OF AN UNUSUAL OPTICAL TRANSIENT WITH THE HUBBLE SPACE TELESCOPE
DISCOVERY OF AN UNUSUAL OPTICAL TRANSIENT WITH THE HUBBLE SPACE TELESCOPE
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DOI：
10.1088/0004-637x/690/2/1358
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发表时间：
2008-09
期刊：
影响因子：
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通讯作者：
K. Barbary;K. Dawson;K. Tokita;G. Aldering;R. Amanullah;N. Connolly;M. Doi;L. Faccioli;V. Fadeyev;A. Fruchter;G. Goldhaber;A. Goobar;A. Gude;X. Huang;Y. Ihara;K. Konishi;M. Kowalski;C. Lidman;J. Meyers;T. Morokuma;P. Nugent;S. Perlmutter;D. Rubin;D. Schlegel;A. Spadafora;N. Suzuki;H. Swift;N. Takanashi;R. Thomas;N. Yasuda
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文献类型：
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作者：
K. Barbary;K. Dawson;K. Tokita;G. Aldering;R. Amanullah;N. Connolly;M. Doi;L. Faccioli;V. Fadeyev;A. Fruchter;G. Goldhaber;A. Goobar;A. Gude;X. Huang;Y. Ihara;K. Konishi;M. Kowalski;C. Lidman;J. Meyers;T. Morokuma;P. Nugent;S. Perlmutter;D. Rubin;D. Schlegel;A. Spadafora;N. Suzuki;H. Swift;N. Takanashi;R. Thomas;N. Yasuda
我们介绍了在哈勃太空望远镜星团超新星探测中发现的一种不寻常的光学瞬变--SCP 06F6的观测结果。这一瞬变在∼100d的周期内变亮，在i775和z850上都达到了∼21.0的峰值星等，然后在类似的时间尺度上下降。在瞬变到3σ上限i775⩾26.4和z850⩾26.1的位置没有探测到宿主星系或前驱恒星，给出了相应的通量增加因子∼120的下限。多光谱显示在4100？和6500？之间有五个宽的吸收带，而6500？的连续谱基本上没有什么特点。光线曲线的形状与微透镜不一致。除了与所有已知的超新星类型不一致外，这颗瞬变的光谱还与斯隆数字巡天数据库中的任何光谱都不匹配。我们认为，这个过客可能是一个新的类别。
We present observations of SCP 06F6, an unusual optical transient discovered during the Hubble Space Telescope Cluster Supernova Survey. The transient brightened over a period of ∼100 days, reached a peak magnitude of ∼ 21.0 in both i775 and z850, and then declined over a similar timescale. There is no host galaxy or progenitor star detected at the location of the transient to a 3σ upper limit of i775 ⩾ 26.4 and z850 ⩾ 26.1, giving a corresponding lower limit on the flux increase of a factor of ∼ 120. Multiple spectra show five broad absorption bands between 4100 Å and 6500 Å, and a mostly featureless continuum longward of 6500 Å. The shape of the light curve is inconsistent with microlensing. The transient's spectrum, in addition to being inconsistent with all known supernova types, does not match any spectrum in the Sloan Digital Sky Survey database. We suggest that the transient may be one of a new class.