Título
CALIFA, the Calar Alto Legacy Integral Field Area survey: II. First public data release∗
Autor
Fernando Fabián Rosales Ortega
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
We present the first public data release (DR1) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. It consists of science-grade optical datacubes for the first 100 of eventually 600 nearby (0:005 < z < 0:03) galaxies, obtained with the integral-field spectrograph PMAS/PPak mounted on the 3.5 m telescope at the Calar Alto observatory. The galaxies in DR1 already cover a wide range of properties in color–magnitude space, morphological type, stellar mass, and gas ionization conditions. This offers the potential to tackle a variety of open questions in galaxy evolution using spatially resolved spectroscopy. Two different spectral setups are available for each galaxy, (i) a low-resolution V500 setup covering the nominal wavelength range 3745–7500 Å with a spectral resolution of 6.0 Å (FWHM), and (ii) a medium-resolution V1200 setup covering the nominal wavelength range 3650–4840 Å with a spectral resolution of 2.3 Å (FWHM). We present the characteristics and data structure of the CALIFA datasets that should be taken into account for scientific exploitation of the data, in particular the effects of vignetting, bad pixels and spatially correlated noise. The data quality test for all 100 galaxies showed that we reach a median limiting continuum sensitivity of 1.0 x 10⁻¹⁸ erg s⁻¹ cm⁻² Å⁻¹ arcsec⁻² at 5635 Å and 2:2 x 10⁻¹⁸ erg s⁻¹ cm⁻² Å⁻¹ arcsec⁻² at 4500 Å for the V500 and V1200 setup respectively, which corresponds to limiting r and g band surface brightnesses of 23.6 mag arcsec⁻² and 23.4 mag arcsec⁻², or an unresolved emission-line flux detection limit of roughly 1 x 10⁻¹⁷ erg s⁻¹ cm⁻² arcsec⁻² and 0.6 x 10⁻¹⁷ erg s⁻¹ cm⁻² arcsec⁻², respectively. The median spatial resolution is 3″.7, and the absolute spectrophotometric calibration is better than 15% (1𝜎). We also describe the available interfaces and tools that allow easy access to this first public CALIFA data at http://califa.caha.es/DR1.
Editor
Astronomy
&
Astrophysics
Fecha de publicación
2013
Tipo de publicación
Artículo
Versión de la publicación
Versión aceptada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Relación
&
Astrophysics, Vol. 549(A87):1-25
Audiencia
Estudiantes
Investigadores
Público en general
Sugerencia de citación
Husemann, B., et al., (2013), CALIFA, the Calar Alto Legacy Integral Field Area survey: II. First public data release∗, Astronomy
Repositorio Orígen
Repositorio Institucional del INAOE
Descargas
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