A high sensitivity HI survey of the sky at - Final data release

Free access article

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. Arnal^{1, 2}, J. J. Larrarte¹, R. Morras^{1, 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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