juliensimon/planetary-nebulae

---
license: cc-by-4.0
pretty_name: "Planetary Nebulae (MUSE Survey)"
language:
- en
description: "Planetary nebulae identified by MUSE (Multi Unit Spectroscopic Explorer). Sourced via VizieR CDS Strasbourg."
task_categories:
- tabular-classification
tags:
- space
- planetary-nebula
- muse
- astronomy
- open-data
size_categories:
- 1K<n<10K
---

# Planetary Nebulae (MUSE Survey)

Catalog of **1,715** planetary nebulae from the MUSE (Multi Unit Spectroscopic
Explorer) survey, with positions, velocities, and morphological classifications.

## Dataset description

Planetary nebulae (PNe) are glowing shells of ionized gas expelled by intermediate-mass
stars at the end of their lives. They are important distance indicators and tracers of
stellar populations and chemical enrichment. This catalog from Jacoby et al. (2024)
presents PNe identified and characterized using the MUSE integral-field spectrograph
on ESO's Very Large Telescope, providing unprecedented spectroscopic detail.

## Quick stats

- **1,715** planetary nebulae
- **0** with radial velocity measurements
- **0** with morphological classifications

## Usage

```python
from datasets import load_dataset

ds = load_dataset("juliensimon/planetary-nebulae", split="train")
df = ds.to_pandas()

# PNe with velocity measurements
if "velocity_kms" in df.columns:
with_vel = df.dropna(subset=["velocity_kms"])
print(f"{len(with_vel):,} PNe with velocities")
print(f"Velocity range: {with_vel['velocity_kms'].min():.0f} to {with_vel['velocity_kms'].max():.0f} km/s")

# Sky distribution
import matplotlib.pyplot as plt
plt.scatter(df["ra_deg"], df["dec_deg"], s=1, alpha=0.5)
plt.xlabel("RA (deg)")
plt.ylabel("Dec (deg)")
plt.title("MUSE Planetary Nebulae")
```

## Data source

Jacoby, G.H. et al. (2024), "Planetary Nebulae from the MUSE Survey",
ApJS, 271, 40. Accessed via [VizieR](https://vizier.cds.unistra.fr/), CDS Strasbourg.

## Pipeline

Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)

## License

[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)