# The EDGE-CALIFA Survey: An Extragalactic Database for Galaxy Evolution Studies

**Authors:** Tony Wong, Yixian Cao, Yufeng Luo, Alberto D. Bolatto, Sebastián F. Sánchez, Jorge K. Barrera-Ballesteros, Leo Blitz, Dario Colombo, Helmut Dannerbauer, Alex Green, Veselina Kalinova, Ferzem Khan, Andrew Kim, Eduardo A. D. Lacerda, Adam K. Leroy, Rebecca C. Levy, Xincheng Lin, Yuanze Luo, Erik W. Rosolowsky, Mónica Rubio  
**arXiv:** [2401.13181](https://arxiv.org/abs/2401.13181)  
**Date:** 2024-01-24  
**Summary page:** https://www.summarizepaper.com/en/paper/2401.13181v1/

## Key points

- The EDGE-CALIFA survey provides spatially resolved optical IFU and CO spectroscopy for 125 galaxies
- Aim of the survey is to investigate the dependence of local conditions on large-scale properties
- Extragalactic Database for Galaxy Evolution (EDGE) presents pixel tables joined with lower dimensional tables for analysis
- Wong et al. describe the construction of the database, including input data products from the original EDGE-CALIFA sample
- Scientific applications enabled by this database include investigating correlations between stellar mass, SFR, and H$_2$ surface densities
- CO upper limits can affect inferred slopes of local scaling relations
- Correlation between H$_2$ and SFR surface density is particularly tight among these three relations
- Comparison made between EDGE-CALIFA database and previous-generation EDGE database
- Overall, the EDGE-CALIFA survey offers a freely accessible database with spatially resolved information on galaxy properties

## Summary

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The EDGE-CALIFA survey is a comprehensive study that provides spatially resolved optical integral field unit (IFU) and CO spectroscopy for 125 galaxies selected from the CALIFA Data Release 3 sample. The aim of this survey is to investigate the dependence of local conditions on large-scale properties by analyzing the pixel-level data from different images. To facilitate comparison and reduce oversampling in the original images, the Extragalactic Database for Galaxy Evolution (EDGE) presents the spatially resolved products of the survey as pixel tables. These pixel tables are joined with lower dimensional tables that provide radial profiles, integrated spectra, or global properties, allowing researchers to explore various scientific applications. In this paper, Wong et al. provide a detailed description of the construction of the database. They discuss how the input data products were obtained from the original EDGE-CALIFA sample, which consists of 126 galaxies observed in CO and 13CO by CARMA. The selection criteria for this sub-sample included high infrared flux measured by WISE 22µm survey and a possible CO detection in CARMA's E configuration. The authors highlight some scientific applications enabled by this database, including investigating the correlation between stellar mass, star formation rate (SFR), and H$_2$ surface densities. They illustrate how CO upper limits can affect the inferred slopes of these local scaling relations. Notably, they find that the correlation between H$_2$ and SFR surface density is particularly tight among these three relations. Additionally, Wong et al. compare their EDGE-CALIFA database with the previous-generation EDGE database. They summarize their results in this paper, providing valuable insights into galaxy evolution studies. Overall, this refined summary emphasizes that the EDGE-CALIFA survey offers a freely accessible database with spatially resolved information on galaxy properties. It enables researchers to investigate local conditions' dependence on large-scale properties and contributes to our understanding of galaxy evolution.