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arXiv 0710.3753astro-ph
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M85中一颗非常微弱的核心坍缩超新星

A very faint core-collapse supernova in M85

A. Pastorello, M. Della Valle, S. J. Smartt, L. Zampieri, S. Benetti, E. Cappellaro, P. Mazzali, F. Patat, S. Spiro, M. Turatto, S. Valenti

摘要:

2006年1月7日,Kulkarni等人(2007)在室女星系团的早期哈勃型(S 0)星系Messier 85(M85)中发现了一个异常瞬变现象,该现象具有非常低的光度(峰值绝对R波段幅度MR约为-12),在超过80天内保持不变,红色和窄谱线,这似乎与在任何已知类别的瞬态事件中观察到的不一致。Kulkarni等人(2007)提出奇异的恒星合并可能是起源。另一种解释是,M85的瞬变是一颗光度极低的II型坪超新星,在一个透镜状星系中爆炸,并有残余的恒星形成活动。这个有趣的瞬变可能是迄今为止发现的最暗的超新星。

英文摘要:

An anomalous transient in the early Hubble-type (S0) galaxy Messier 85 (M85) in the Virgo cluster was discovered by Kulkarni et al. (2007) on 7 January 2006 that had very low luminosity (peak absolute R-band magnitude MR of about -12) that was constant over more than 80 days, red colour and narrow spectral lines, which seem inconsistent with those observed in any known class of transient events. Kulkarni et al. (2007) suggest an exotic stellar merger as the possible origin. An alternative explanation is that the transient in M85 was a type II-plateau supernova of extremely low luminosity, exploding in a lenticular galaxy with residual star-forming activity. This intriguing transient might be the faintest supernova that has ever been discovered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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