juliensimon/otter-tde-catalog

OTTER TDE Catalog

Part of the Astronomy Datasets collection on Hugging Face.

All 90 known tidal disruption events (TDEs) from the Open TDE Catalog, spanning discoveries from 1990 to 2018.

Dataset description

A tidal disruption event (TDE) occurs when a star passes close enough to a supermassive black hole to be ripped apart by tidal forces, producing a luminous flare visible across the electromagnetic spectrum. The Open TDE Catalog aggregates all known TDE candidates with coordinates, redshifts, host galaxy identifications, and peak magnitudes.

Each record includes sky coordinates, spectroscopic classification, redshift, host galaxy, peak apparent and absolute magnitude, and Milky Way extinction (E(B-V)).

Schema

Column	Type	Description
name	string	Primary name (e.g., "ASASSN-14li", "Swift J1644+57")
aliases	string	Alternative designations (comma-separated)
ra_hms	string	Right ascension in HH:MM:SS.ss format
dec_dms	string	Declination in +DD:MM:SS.ss format
ra	float64	Right ascension in decimal degrees
dec	float64	Declination in decimal degrees
redshift	float64	Spectroscopic redshift
claimed_type	string	Classification (TDE, TDE?, TDE-H, TDE-He, etc.)
host_galaxy	string	Host galaxy name
host_ra	float64	Host galaxy RA in decimal degrees
host_dec	float64	Host galaxy Dec in decimal degrees
host_offset_arcsec	float64	Angular offset from host nucleus (arcsec)
peak_mag	float64	Peak apparent magnitude
peak_abs_mag	float64	Peak absolute magnitude
peak_date	datetime	Date of peak brightness
discovery_date	datetime	Date of discovery
discovery_year	int64	Year of discovery
luminosity_distance_mpc	float64	Luminosity distance in Mpc
velocity_km_s	float64	Recession velocity in km/s
ebv	float64	Milky Way E(B-V) extinction
instruments	string	Instruments used for observations

Quick stats

• 90 tidal disruption events (1990--2018)
• 77 with sky coordinates
• 84 with redshift measurements
• 37 with spectroscopic classification
• 83 with identified host galaxy
• 43 with peak magnitude

Classifications

Type	Count
TDE?	14
MS + SMBH	8
TDE	6
AGN?	3
Candidate	2
WD + IMBH	1
Planet + WD	1
Low-mass TDE	1
SLSN-I?	1

Usage

from datasets import load_dataset

ds = load_dataset("juliensimon/otter-tde-catalog", split="train")
df = ds.to_pandas()

# All confirmed TDEs
confirmed = df[df["claimed_type"] == "TDE"]

# TDEs with redshift
with_z = df[df["redshift"].notna()].sort_values("redshift")

# Nearby TDEs (z < 0.05)
nearby = df[df["redshift"] < 0.05].sort_values("redshift")

# TDEs with peak magnitude
bright = df[df["peak_mag"].notna()].sort_values("peak_mag")

# Discoveries per year
per_year = df["discovery_year"].dropna().value_counts().sort_index()

Data source

Open TDE Catalog via the astrocatalogs GitHub organization. The catalog aggregates data from ASAS-SN, ZTF, Swift, XMM-Newton, SDSS, and the astronomical literature.

Related datasets

• open-supernova-catalog — Open Supernova Catalog
• grb-catalog — Gamma-ray burst catalog
• exoplanet-archive — Confirmed exoplanets

Pipeline

Source code: juliensimon/space-datasets

Static dataset — uploaded manually (only ~30 new TDEs per year).

Citation

@article{open_tde_catalog,
  author = {Guillochon, James and Parrent, Jerod and Kelley, Luke Zoltan and Margutti, Raffaella},
  title = {An Open Catalog for Supernova Data},
  journal = {The Astrophysical Journal},
  year = {2017},
  volume = {835},
  number = {1},
  pages = {64},
  doi = {10.3847/1538-4357/835/1/64},
  note = {The TDE catalog uses the same astrocatalogs infrastructure}
}

License

CC-BY-4.0