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CALIFA, the Calar Alto Legacy Integral Field Area survey
III. Second public data release

R. García-Benito, S. Zibetti, S. F. Sánchez, B. Husemann, A. L. de Amorim, A. Castillo-Morales, R. Cid Fernandes, S. Ellis, J. Falcón-Barroso, L. Galbany, A. Gil de Paz, R. M. González Delgado, E. A. D. Lacerda, R. López-Fernández, A. de Lorenzo-Cáceres, M. Lyubenova, R. A. Marino, D. Mast, M. A. Mendoza, K. N. Abazajian, E. Pérez, N. Vale Asari, J. A. L. Aguerri, Y. Ascasibar, S. Bekeraitè, J. Bland-Hawthorn, J. K. Barrera-Ballesteros, D. J. Bomans, M. Cano-Díaz, C. Catalán-Torrecilla, C. Cortijo-Ferrero, G. Delgado-Inglada, M. Demleitner, R.-J. Dettmar, A. I. Díaz, E. Florido, A. Gallazzi, B. García-Lorenzo, J. M. Gomes, L. Holmes, J. Iglésias-Páramo, K. Jahnke, V. Kalinova, C. Kehrig, R. C Kennicutt, Á. R. López-Sánchez, I. Márquez, J. Masegosa, S. Meidt, J. Méndez-Abreu, M. Mollá, A. Monreal-Ibero, C. Morisset, A. del Olmo, P. Papaderos, I. Pérez, A. Quirrenbach, F. F. Rosales-Ortega, M. M. Roth, T. Ruiz-Lara, P. Sánchez-Blázquez, L. Sánchez-Menguiano, R. Singh, K. Spekkens, V. Stanishev, P. Torres-Papaqui, G. van de Ven, J. M. Vílchez, C. J. Walcher, V. Wild, L. Wisotzki, B. Ziegler, J. Alves, D. Barrado-Navascues, J. M. Quintana, J. Aceituno

Abstract
This paper describes the Second Public Data Release (DR2) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. The data for 200 objects are made public, including the 100 galaxies of the First Public Data Release (DR1). Data were obtained with the integral-field spectrograph PMAS/PPak mounted on the 3.5 m telescope at the Calar Alto observatory. Two different spectral setups are available for each galaxy, (i) a low-resolution V500 setup covering the wavelength range 3745–7500 Å with a spectral resolution of 6.0 Å (FWHM); and (ii) a medium-resolution V1200 setup covering the wavelength range 3650–4840 Å with a spectral resolution of 2.3 Å (FWHM). The sample covers a redshift range between 0.005 and 0.03, with a wide range of properties in the color–magnitude diagram, stellar mass, ionization conditions, and morphological types. All the cubes in the data release were reduced with the latest pipeline, which includes improvedspectrophotometric calibration, spatial registration, and spatial resolution. The spectrophotometric calibration is better than 6% and the median spatial resolution is 2.̋4. In total, the second data release contains over 1.5 million spectra.

Keywords
surveys - techniques: spectroscopic - galaxies: general

Astronomy and Astrophysics
Volume 576, Number of pages A135
2015 April

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Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa Fundação para a Ciência e a Tecnologia
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