# Plot X-ray source catalog

    library(ggsky)
    library(ggplot2)
    theme_set(theme_light())

This vignette demonstrates how to plot the ARTSS1–5 X-ray source catalog in galactic coordinates.

The dataset `artss15` is included in the package in a preprocessed form for reproducibility. It is based on the CDS/VizieR catalog `J/A+A/687/A183` (bibcode: `2024A&A...687A.183S`).

Main variables used below: - `l`, `b`: galactic longitude and latitude (degrees) - `flux`: X-ray flux (`erg/s/cm^2`)

In the plot, point color represents `log10(flux)`.

# Plot

    ggplot(artss15, aes(l, b, color = log10(flux))) +
      geom_point(alpha = 0.5) +
      scale_color_viridis_b() +
      labs(
        title = "ARTSS1–5 X-ray sources in galactic coordinates",
        caption = "Catalog: CDS/VizieR J/A+A/687/A183 | bibcode: 2024A&A...687A.183S",
        color = "log Fx\nerg/s/cm^2"
      ) +
      coord_galactic()