CALIFA, the Calar Alto Legacy Integral Field Area survey. II. First public data release
Abstract
We present the first public data release of the 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 3.5m 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 3745-7500A with a spectral resolution of 6.0A (FWHM), and (ii) a medium-resolution V1200 setup covering the nominal wavelength range 3650-4840A with a spectral resolution of 2.3A (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 1.0x10^-18erg/s/cm^2/A/arcsec^2 at 5635A and 2.2x10^-18erg/s/cm^2/A/arcsec^2 at 4500A for the V500 and V1200 setup respectively, which corresponds to limiting r and g band surface brightnesses of 23.6mag/arcsec^2 and 23.4mag/arcsec^2, or an unresolved emission-line flux detection limit of roughly 1x10^-17erg/s/cm^2/arcsec^2 and 0.6x10^-17erg/s/cm^2/arcsec^2, respectively. The median spatial resolution is 3.7", and the absolute spectrophotometric calibration is better than 15% (1sigma). We also describe the available interfaces and tools that allow easy access to this first public CALIFA data.
Keywords
Cite
@article{arxiv.1210.8150,
title = {CALIFA, the Calar Alto Legacy Integral Field Area survey. II. First public data release},
author = {CALIFA collaboration and B. Husemann and K. Jahnke and S. F. Sánchez and D. Barrado and S. Bekeraitė and D. J. Bomans and A. Castillo-Morales and C. Catalán-Torrecilla and R. Cid Fernandes and J. Falcón-Barroso and R. García-Benito and R. M. González Delgado and J. Iglesias-Páramo and B. D. Johnson and D. Kupko and R. López-Fernandez and M. Lyubenova and R. A. Marino and D. Mast and A. Miskolczi and A. Monreal-Ibero and A. Gil de Paz and E. Pérez and I. Pérez and F. F. Rosales-Ortega and T. Ruiz-Lara and U. Schilling and G. van de Ven and J. Walcher and J. Alves and A. L. de Amorim and N. Backsmann and J. K. Barrera-Ballesteros and J. Bland-Hawthorn and C. Cortijo and R. -J. Dettmar and M. Demleitner and A. I. Díaz and H. Enke and E. Florido and H. Flores and L. Galbany and A. Gallazzi and B. García-Lorenzo and J. M. Gomes and N. Gruel and T. Haines and L. Holmes and B. Jungwiert and V. Kalinova and C. Kehrig and R. C. Kennicutt and J. Klar and M. D. Lehnert and Á. R. Lóez-Sáchez and A. de Lorenzo-Cáceres and E. Mármol-Queraltó and I. Márquez and J. Mendez-Abreu and M. Mollá and A. del Olmo and S. E. Meidt and P. Papaderos and J. Puschnig and A. Quirrenbach and M. M. Roth and P. Sánchez-Blázquez and K. Spekkens and R. Singh and V. Stanishev and S. C. Trager and J. M. Vilchez and V. Wild and L. Wisotzki and S. Zibetti and B. Ziegler},
journal= {arXiv preprint arXiv:1210.8150},
year = {2013}
}
Comments
27 pages, 25 figures, 6 tables, final version including corrections after proof reading, the CALIFA DR1 homepage at http://califa.caha.es/DR1 is open for the public