GASS: The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release

P. M.W. Kalberla; N. M. McClure-Griffiths; D. J. Pisano; M. R. Calabretta; H. Alyson Ford; F. J. Lockman; L. Staveley-Smith; J. Kerp; B. Winkel; T. Murphy; K. Newton-McGee

doi:10.1051/0004-6361/200913979

GASS: The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release

P. M.W. Kalberla, N. M. McClure-Griffiths, D. J. Pisano, M. R. Calabretta, H. Alyson Ford, F. J. Lockman, L. Staveley-Smith, J. Kerp, B. Winkel, T. Murphy, K. Newton-McGee

Research output: Contribution to journal › Article › peer-review

170 Citations (Scopus)

Abstract

Context. The Parkes Galactic all-sky survey (GASS) is a survey of Galactic atomic hydrogen (Hi) emission in the southern sky observed with the Parkes 64-m Radio Telescope. The first data release was published by McClure-Griffiths et al. (2009). Aims.We remove instrumental effects that affect the GASS and present the second data release. Methods.We calculate the stray-radiation by convolving the all-sky response of the Parkes antenna with the brightness temperature distribution from the Leiden/Argentine/Bonn (LAB) all sky 21-cm line survey, with major contributions from the 30-m dish of the Instituto Argentino de Radioastronomía (IAR) in the southern sky. Remaining instrumental baselines are corrected using the LAB data for a first guess of emission-free baseline regions. Radio frequency interference is removed by median filtering. Results.After applying these corrections to the GASS we find an excellent agreement with the Leiden/Argentine/Bonn (LAB) survey. The GASS is the highest spatial resolution, most sensitive, and is currently the most accurate Hi survey of the Galactic Hi emission in the southern sky. We provide a web interface for generation and download of FITS cubes.

Original language	English
Article number	A17
Journal	Astronomy and Astrophysics
Volume	521
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361/200913979
Publication status	Published - 14 Oct 2010
Externally published	Yes

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Kalberla, P. M. W., McClure-Griffiths, N. M., Pisano, D. J., Calabretta, M. R., Ford, H. A., Lockman, F. J., Staveley-Smith, L., Kerp, J., Winkel, B., Murphy, T., & Newton-McGee, K. (2010). GASS: The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release. Astronomy and Astrophysics, 521(2), Article A17. https://doi.org/10.1051/0004-6361/200913979

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title = "GASS: The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release",

abstract = "Context. The Parkes Galactic all-sky survey (GASS) is a survey of Galactic atomic hydrogen (Hi) emission in the southern sky observed with the Parkes 64-m Radio Telescope. The first data release was published by McClure-Griffiths et al. (2009). Aims.We remove instrumental effects that affect the GASS and present the second data release. Methods.We calculate the stray-radiation by convolving the all-sky response of the Parkes antenna with the brightness temperature distribution from the Leiden/Argentine/Bonn (LAB) all sky 21-cm line survey, with major contributions from the 30-m dish of the Instituto Argentino de Radioastronom{\'i}a (IAR) in the southern sky. Remaining instrumental baselines are corrected using the LAB data for a first guess of emission-free baseline regions. Radio frequency interference is removed by median filtering. Results.After applying these corrections to the GASS we find an excellent agreement with the Leiden/Argentine/Bonn (LAB) survey. The GASS is the highest spatial resolution, most sensitive, and is currently the most accurate Hi survey of the Galactic Hi emission in the southern sky. We provide a web interface for generation and download of FITS cubes.",

keywords = "Galaxy: structure, ISM: general, radio lines: ISM, surveys",

author = "Kalberla, {P. M.W.} and McClure-Griffiths, {N. M.} and Pisano, {D. J.} and Calabretta, {M. R.} and Ford, {H. Alyson} and Lockman, {F. J.} and L. Staveley-Smith and J. Kerp and B. Winkel and T. Murphy and K. Newton-McGee",

year = "2010",

month = oct,

day = "14",

doi = "10.1051/0004-6361/200913979",

language = "English",

volume = "521",

journal = "Astronomy and Astrophysics",

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T2 - The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release

AU - Kalberla, P. M.W.

AU - McClure-Griffiths, N. M.

AU - Pisano, D. J.

AU - Calabretta, M. R.

AU - Ford, H. Alyson

AU - Lockman, F. J.

AU - Staveley-Smith, L.

AU - Kerp, J.

AU - Winkel, B.

AU - Murphy, T.

AU - Newton-McGee, K.

PY - 2010/10/14

Y1 - 2010/10/14

N2 - Context. The Parkes Galactic all-sky survey (GASS) is a survey of Galactic atomic hydrogen (Hi) emission in the southern sky observed with the Parkes 64-m Radio Telescope. The first data release was published by McClure-Griffiths et al. (2009). Aims.We remove instrumental effects that affect the GASS and present the second data release. Methods.We calculate the stray-radiation by convolving the all-sky response of the Parkes antenna with the brightness temperature distribution from the Leiden/Argentine/Bonn (LAB) all sky 21-cm line survey, with major contributions from the 30-m dish of the Instituto Argentino de Radioastronomía (IAR) in the southern sky. Remaining instrumental baselines are corrected using the LAB data for a first guess of emission-free baseline regions. Radio frequency interference is removed by median filtering. Results.After applying these corrections to the GASS we find an excellent agreement with the Leiden/Argentine/Bonn (LAB) survey. The GASS is the highest spatial resolution, most sensitive, and is currently the most accurate Hi survey of the Galactic Hi emission in the southern sky. We provide a web interface for generation and download of FITS cubes.

AB - Context. The Parkes Galactic all-sky survey (GASS) is a survey of Galactic atomic hydrogen (Hi) emission in the southern sky observed with the Parkes 64-m Radio Telescope. The first data release was published by McClure-Griffiths et al. (2009). Aims.We remove instrumental effects that affect the GASS and present the second data release. Methods.We calculate the stray-radiation by convolving the all-sky response of the Parkes antenna with the brightness temperature distribution from the Leiden/Argentine/Bonn (LAB) all sky 21-cm line survey, with major contributions from the 30-m dish of the Instituto Argentino de Radioastronomía (IAR) in the southern sky. Remaining instrumental baselines are corrected using the LAB data for a first guess of emission-free baseline regions. Radio frequency interference is removed by median filtering. Results.After applying these corrections to the GASS we find an excellent agreement with the Leiden/Argentine/Bonn (LAB) survey. The GASS is the highest spatial resolution, most sensitive, and is currently the most accurate Hi survey of the Galactic Hi emission in the southern sky. We provide a web interface for generation and download of FITS cubes.

KW - Galaxy: structure

KW - ISM: general

KW - radio lines: ISM

KW - surveys

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DO - 10.1051/0004-6361/200913979

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JO - Astronomy and Astrophysics

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IS - 2

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GASS: The Parkes Galactic all-sky survey: II. Stray-radiation correction and second data release

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