image_rgb imagewidth (px) 256 256 | image_stretched imagewidth (px) 256 256 | image_bands listlengths 4 4 | ra float64 0.73 332 | dec float64 -75.01 26.7 | label stringclasses 3
values |
|---|---|---|---|---|---|
[[[0.0032568522728979588,0.002284197136759758,0.0021030635107308626,0.0043227896094322205,0.00626098(...TRUNCATED) | 20.128196 | -21.218809 | neither | ||
[[[0.0003051982494071126,-0.0036451290361583233,-0.00031426394707523286,-0.0009832907235249877,-0.00(...TRUNCATED) | 52.200486 | 1.997944 | stream | ||
[[[0.0021474440582096577,-0.00009286994463764131,-0.0007144258706830442,-0.0009298849618062377,0.000(...TRUNCATED) | 160.791968 | 5.941371 | stream | ||
[[[-0.0005017730873078108,-0.00023211691586766392,0.0005069738836027682,0.0010547509882599115,0.0006(...TRUNCATED) | 209.7203 | -5.5807 | stream | ||
[[[0.00022284647275228053,-0.00028353772358968854,-0.0000319389182550367,-0.00019568210700526834,0.0(...TRUNCATED) | 89.909984 | -60.168149 | stream | ||
[[[0.00011436992645030841,0.0007515528704971075,-0.0011585487518459558,-0.002046968787908554,-0.0003(...TRUNCATED) | 189.258444 | 22.265943 | neither | ||
[[[-0.0004610236792359501,0.00005011681787436828,-0.00011994635860901326,-0.0008217941503971815,0.00(...TRUNCATED) | 15.003726 | -17.906067 | neither | ||
[[[0.0011643243487924337,0.0009226160473190248,-0.00011391226144041866,-1.230739485436061e-6,-0.0000(...TRUNCATED) | 173.436776 | -26.279181 | neither | ||
[[[-0.00041086875717155635,-0.000798335880972445,-0.0009719799272716045,-0.0015129410894587636,0.000(...TRUNCATED) | 90.57017 | -39.101812 | stream | ||
[[[-0.0011780173517763615,-0.0005469754687510431,-1.5434944771186565e-6,0.0006806120509281754,0.0008(...TRUNCATED) | 296.595143 | -62.265002 | shell |
AION-Search streams, shells, and hard negatives
Catalog with 102 objects: 39 streams, 34 shells, and 29 negatives.
Splits
The test split is a reproducible stratified random sample with exactly 10
streams, 10 shells, and 10 neither objects. The remaining 72 objects form the
training split (29 streams, 24 shells, 19 neither). Random seed: 20260802.
Columns
image_rgb: 256 x 256 Legacy Survey DR10 color JPEG.image_stretched: the same RGB cutout after the AION-Search per-channel arcsinh stretch, grayscale conversion, inversion, and a 0.7-pixel Gaussian blur.image_bands: Legacy Survey DR10 flux planes as nested float32 lists with shape(4, 256, 256)and band order(g, r, i, z).ra,dec: ICRS coordinates in decimal degrees.label: one ofstream,shell, orneither.
Every representation uses the same 0.035 degree sky footprint and 256 x 256 pixel grid from CDS HiPS2FITS.
Curation
The starting catalog contained 114 objects (36 streams, 38 shells, 40 neither).
After a randomized blind review, 12 ambiguous objects were dropped and four
objects were relabeled. The retained catalog is deduplicated at 10 arcsec.
neither is an operational hard-negative label from rejected high-ranking shell
semantic-search results; it is not proof of the physical absence of all tidal
structure.
Underlying imagery is from the DESI Legacy Imaging Surveys DR10 and remains subject to its original data-use policy and acknowledgements.
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