A high sensitivity HI survey of the sky at δ ≤-25°

被引：86

作者：

Arnal, EM ^{[1
]}

Bajaja, E ^{[1
]}

Larrarte, JJ ^{[1
]}

Morras, R ^{[1
]}

Pöppel, WGL ^{[1
]}

机构：

[1] Inst Argentino Radioastron, RA-1894 Villa Elisa, Argentina

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 2000年 / 142卷 / 01期

关键词：

surveys; ISM : general; Galaxy : general radio lines : ISM; ISM : clouds;

D O I：

10.1051/aas:2000134

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper reports on a high sensitivity lambda 21-cm neutral hydrogen survey of the sky south of delta less than or equal to -25 degrees. A total of 50980 positions lying on a galactic coordinate grid with points spaced by (Delta l, Delta b) = (0 degrees.5/cos b, 0 degrees.5), were observed with the 30 m dish of the Instituto Argentino de Radioastronomia (IAR). The angular resolution of the survey is HPBW = 30', and the velocity coverage spans the interval -450 kms(-1) to +400 kms(-1) (LSR). The velocity resolution is 1.27 kms(-1) and the final rms noise of the entire database is similar to 0.07 K. The brightness temperature scale is accurate to 5%.

引用

页码：35 / 40

页数：6

共 22 条

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