EDP Sciences
Free access
Issue
A&A
Volume 440, Number 2, September III 2005
Page(s) 767 - 773
Section On-line catalogs and data
DOI http://dx.doi.org/10.1051/0004-6361:20041863


A&A 440, 767-773 (2005)
DOI: 10.1051/0004-6361:20041863

A high sensitivity HI survey of the sky at $\mathsf{\delta \le -25 \degr}$

Final data release
E. Bajaja1, E. M. Arnal1, 2, J. J. Larrarte1, R. Morras1, 2, W. G. L. Pöppel1 and P. M. W. Kalberla3

1  Instituto Argentino de Radioastronomía, c.c. 5, (1894) Villa Elisa, Argentina
    e-mail: [bajaja;arnal]@iar.unlp.edu.ar; rimorras@isis.unlp.edu.ar; wpoeppel@iar.unlp.edu.ar
2  Facultad de Ciencias Astronómicas y Geofísicas, UNLP, Av. Paseo del Bosque, s/n, 1900 La Plata, Argentina
3  Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
    e-mail: pkalberla@astro.uni-bonn.de

(Received 19 August 2004 / Accepted 3 March 2005)

Abstract
We present the final data release of the high sensitivity $\lambda$ 21-cm neutral hydrogen survey of the sky south of $\delta
\le -25 \degr$. A total of 50 980 positions lying on a galactic coordinate grid with points spaced by ( $\Delta l, \Delta b$) = (0$\fdg$5/cos b, 0$\fdg$5) were observed with the 30-m dish of the Instituto Argentino de Radioastronomía (IAR). The angular resolution of the survey is HPBW = 0$\fdg$5 and the velocity coverage spans the interval -450  ${\rm km\,s^{-1}}$ to +400  ${\rm km\,s^{-1}}$ (LSR). The velocity resolution is 1.27  ${\rm km\,s^{-1}}$ and the final rms noise of the entire database is 0.07 K. The data are corrected for stray radiation and converted to brightness temperatures.


Key words: surveys -- Galaxy: structure -- radio lines: ISM


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