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首页> 外文期刊>The Astrophysical journal >H I-bright Galaxies in the Southern Zone of Avoidance
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H I-bright Galaxies in the Southern Zone of Avoidance

机译:回避南部地区的H I-明亮星系

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A blind survey for H I–bright galaxies in the southern zone of avoidance (212° ≤ l ≤ 36°, |b| ≤ 5°) has been made with the 21 cm multibeam receiver on the Parkes 64 m radio telescope. The survey, sensitive to normal spiral galaxies to a distance of ~40 Mpc and more nearby dwarfs, detected 110 galaxies. Of these, 67 have no counterparts cataloged in the NASA/IPAC Extragalactic Database. In general, the uncataloged galaxies lie behind thicker obscuration than do the cataloged objects. All the newly discovered galaxies have H I flux integrals that are more than an order of magnitude lower than those of the Circinus galaxy. The survey recovers the Puppis Cluster and foreground group, and the Local Void remains empty. The H I mass function derived for the sample is satisfactorily fitted by a Schechter function with parameters α = 1.51 ± 0.12, Φ* = 0.006 ± 0.003, and log M* = 9.7 ± 0.10.
机译:使用Parkes 64 m射电望远镜上的21厘米多波束接收器,对南部避让区(212°≤l≤36°,| b |≤5°)中的H I明亮星系进行了盲测量。这项调查对正常的螺旋星系敏感,距离约40 Mpc,附近还有更多矮星,发现了110个星系。其中67个在NASA / IPAC星系外数据库中没有分类。通常,未分类的星系比分类的物体更厚。所有新发现的星系的H I通量积分都比圆环星系的H I通量积分低一个数量级。调查将恢复Puppis群集和前景组,并且“本地空隙”保持为空。通过参数的α= 1.51±0.12,Φ* = 0.006±0.003和log M * = 9.7±0.10的Schechter函数可以令人满意地拟合为样品得出的H I质量函数。

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