论文标题
Nova Sagittarii 1943年（V1148 SGR）：发光的红色Nova？
Nova Sagittarii 1943 (V1148 Sgr): A Luminous Red Nova?
论文作者
论文摘要
Nova Sagittarii 1943年（V1148 SGR）是一个第八刻度的光学瞬变，在爆发过程中具有晚期型光谱是不寻常的，与经典Novae中正常的高兴奋性光谱形成鲜明对比。不幸的是，发现公告中只有大约一个立场，阻碍了观察其残留物的后续尝试。我们已经在哈佛档案馆的两个摄影板上确定了Nova，从而使我们能够确定精确的星体位置。除了在1943年和1944年获得的这两个盘子外，从1897年到1950年，哈佛集合中的照片都没有，显示了V1148 SGR的限制，如g〜18.3的淡淡。现代深层图像显示了i〜19.2的候选残留物，在Nova。V1148SGR的位置仅为0“ .26，可能是一个发光的红色Nova（LRN），这是以银河系为单位的第六个。但是，它缺乏近红外和中部的多余和毫米，以及其他赛道的pressight n undern undern undern the Preckers the Preckers the Preckers nesival nythy specply precplts precplts sepppert sepppert specplies the Preccpers precppers precppers precppers precppers precppers precppers exppectif。
Nova Sagittarii 1943 (V1148 Sgr) was an 8th-mag optical transient that was unusual in having a late-type spectrum during its outburst, in striking contrast to the normal high-excitation spectra seen in classical novae. Unfortunately, only an approximate position was given in the discovery announcement, hampering follow-up attempts to observe its remnant. We have identified the nova on two photographic plates in the Harvard archive, allowing us to determine a precise astrometric position. Apart from these two plates, obtained in 1943 and 1944, none of the photographs in the Harvard collection, from 1897 to 1950, show V1148 Sgr to limits as faint as g ~ 18.3. Modern deep images show a candidate remnant at i ~ 19.2, lying only 0".26 from the site of the nova. V1148 Sgr may have been a luminous red nova (LRN), only the sixth one known in the Milky Way. However, it lacks the near- and mid-infrared excesses, and millimeter-wave emission, seen in other LRNe, leaving its nature uncertain. We urge spectroscopy of the candidate remnant.
