PMAS: The Potsdam Multi‐Aperture Spectrophotometer. II. The Wide Integral Field Unit PPak

Kelz, Andreas; Verheijen, Marc; Roth, Martin; Bauer, Svend M.; Becker, T.; Paschke, J.; Popow, Emil; Sanchez, Sebastian Francisco Sanchez; Laux, U.

doi:10.1086/497455

Cited by 249 publications

(131 citation statements)

References 20 publications

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“…light collecting power (e.g. PPak-IFU, Kelz et al 2006) and spatial binning of spectra can be applied to improve the signal-to-noise ratio.…”

Section: Scenarios For Imaging Spectroscopymentioning

confidence: 99%

Motivations for Imaging Spectroscopy at Dome C

Kelz

2008

EAS Publications Series

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Abstract. Antarctica offers unique conditions for ground-based observations, such as low sky background in the infrared, improved seeing, and low turbulence and scintillation noise. These properties are particularly beneficial for imaging, precision photometry and infrared observations. It may be less clear if Antarctica offers equally compelling advantages for spectroscopy, in particular in the optical domain. However, scientific programmes that make use of imaging (or 3D) spectroscopy for selected follow-up studies of IR surveys, long-term monitoring of extended targets and resolved stellar population studies in crowded fields, also benefit from the site conditions at Dome C.

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“…light collecting power (e.g. PPak-IFU, Kelz et al 2006) and spatial binning of spectra can be applied to improve the signal-to-noise ratio.…”

Section: Scenarios For Imaging Spectroscopymentioning

confidence: 99%

Motivations for Imaging Spectroscopy at Dome C

Kelz

2008

EAS Publications Series

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“…1. We used an adjusted version of the PMAS/PPAK software package 13,14 for extraction and wavelength calibration of the simulated spectra. Top: Weak LAE; left is rest frame template, right is simulation for z = 2.5.…”

Section: Biasmentioning

confidence: 99%

“…The VIRUS prototype (to be deployed in July on the McDonald 2.7m telescope) will allow the fine tuning of the software development while its data will be reduced with an interactive pipeline based on the PMAS/PPAK software package. 13,14 …”

Section: Project Statusmentioning

confidence: 99%

The VIRUS data reduction pipeline

et al. 2006

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The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will measure baryonic acoustic oscillations, first discovered in the Cosmic Microwave Background (CMB), to constrain the nature of dark energy by performing a blind search for Ly-α emitting galaxies within a 200 deg 2 field and a redshift bin of 1.8 < z < 3.7. This will be achieved by VIRUS, a wide field, low resolution, 145 IFU spectrograph. The data reduction pipeline will have to extract ≈ 35.000 spectra per exposure (≈5 million per night, i.e. 500 million in total), perform an astrometric, photometric, and wavelength calibration, and find and classify objects in the spectra fully automatically. We will describe our ideas how to achieve this goal.

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“…CALIFA observations started in June 2010 with the Potsdam Multi-Aperture Spectrograph (PMAS), mounted to the 3.5-m telescope, utilizing the large (74 × 64 ) hexagonal field-of-view (FoV) offered by the PPak fiber bundle [2,3]. PPak was created for the Disk Mass Survey [4].…”

Section: Califa: a Brief Introductionmentioning

confidence: 99%

The CALIFA Survey: Exploring the Oxygen Abundance in the Local Universe

et al. 2015

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We present here a review of the latest results on the spatially-resolved analysis of the stellar populations and ionized gas of disk-dominated galaxies based on Calar Alto Legacy Integral Field Area (CALIFA) data. CALIFA is an ongoing integral field spectroscopy (IFS) survey of galaxies in the Local Universe (0.005 < z < 0.03) that has already obtained spectroscopic information up to ∼2.5 r e with a spatial resolution better than ∼1 kpc for a total number of more than 600 galaxies of different morphological types, covering the color-magnitude diagram up to M R < −18 mag. With nearly 2000 spectra obtained for each galaxy, CALIFA offers one of the best IFUdatasets to study the star Galaxies 2015, 3 165 formation histories and chemical enrichment of galaxies. In this article, we focus on the main results from the analysis of the oxygen abundances based on the study of ionized gas in H II regions and individual spaxels and their relation to the global properties of galaxies, using an updated/revised dataset with more galaxies and ionized regions. In summary, we have confirmed previous published results indicating that: (1) the M-Z relation does not present a secondary relation to the star formation rate, when the abundance is measured at the effective radius; (2) the oxygen abundance presents a strong correlation with the stellar surface density (Σ-Z relation); (3) the oxygen abundance profiles present three well-defined regimes: (i) an overall negative radial gradient between 0.5 and 2 r e , with a characteristic slope of α O/H ∼−0.1 dex/r e ; (ii) a universal flattening beyond >2 r e ; and (iii) an inner drop at <0.5 r e that depends on mass; (4) the presence of bending in the surface brightness profile of disk galaxies is not clearly related to either the change in the shape of the oxygen abundance profile or the properties of the underlying stellar population. All of these results indicate that disk galaxies present an overall inside-out growth, with chemical enrichment and stellar mass growth tightly correlated and dominated by local processes and limited effects of radial mixing or global outflows. However, clear deviations are shown with respect to this simple scenario, which affect the abundance profiles in both the innermost and outermost regions of galaxies.

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PMAS: The Potsdam Multi‐Aperture Spectrophotometer. II. The Wide Integral Field Unit PPak

Cited by 249 publications

References 20 publications

Motivations for Imaging Spectroscopy at Dome C

Motivations for Imaging Spectroscopy at Dome C

The VIRUS data reduction pipeline

The CALIFA Survey: Exploring the Oxygen Abundance in the Local Universe

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