太阳邻域XXV：在赤纬-47度和00度之间发现0.40“/yr > mu > 0.18“/yr的新自行星
The Solar Neighborhood XXV: Discovery of New Proper Motion Stars with 0.40 "/yr > mu > 0.18 "/yr between Declinations -47 degrees and 00 degrees
摘要：
我们提出了2817个新的南半球自行系统，其0.40“/yr > mu > 0.18“/yr，倾角在-47度到00度之间。这是对南方天空进行的超级宇宙侦察（SCR）自行搜索的延续。我们使用相同的光度关系作为以前的搜索提供距离估计的基础上的假设，对象是单一的主序星。我们发现了79个新的红矮星系统，预测在25 pc以内，包括一些以前已知系统的新组成部分。两个系统- SCR 1731-2452在9.5 pc和SCR 1746-3214在9.9 pc -预计在10 pc内。我们还发现了23个新的白矮星候选者，距离估计为15-66 pc，以及360个新的红亚矮星候选者。通过这次搜索，我们完成了南方天空中mu > 0.18“/yr和R_59F < 16.5的恒星的SCR扫描，在4724个以前未报道的自行系统中总共得到5042个物体。在这里，我们提供了从我们的SCR自行搜索到目前为止，包括152个红矮星系统估计在25 pc（9个在10 pc内），46个白矮星（10个在25 pc内），和598个亚矮星候选者。这次搜索的结果表明，有更多的附近系统被发现在较暗的震级和较低的自行限制比那些探测到目前为止。
英文摘要：
We present 2817 new southern proper motion systems with 0.40 "/yr > mu > 0.18 "/yr and declination between -47 degrees and 00 degrees. This is a continuation of the SuperCOSMOS-RECONS (SCR) proper motion searches of the southern sky. We use the same photometric relations as previous searches to provide distance estimates based on the assumption that the objects are single main sequence stars. We find 79 new red dwarf systems predicted to be within 25 pc, including a few new components of previously known systems. Two systems - SCR 1731-2452 at 9.5 pc and SCR 1746-3214 at 9.9 pc - are anticipated to be within 10 pc. We also find 23 new white dwarf candidates with distance estimates of 15-66 pc, as well as 360 new red subdwarf candidates. With this search, we complete the SCR sweep of the southern sky for stars with mu > 0.18 "/yr and R_59F < 16.5, resulting in a total of 5042 objects in 4724 previously unreported proper motion systems. Here we provide selected comprehensive lists from our SCR proper motion search to date, including 152 red dwarf systems estimated to be within 25 pc (nine within 10 pc), 46 white dwarfs (ten within 25 pc), and 598 subdwarf candidates. The results of this search suggest that there are more nearby systems to be found at fainter magnitudes and lower proper motion limits than those probed so far.
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