Backyard Worlds: Planet 9

Here are links to the scientific papers that describe Backyard Worlds: Planet 9 discoveries, in reverse chronological order.

Discovery of 34 low-mass comoving systems using NOIRLab Source Catalog DR2
Here's a press release about that paper, "Citizen Scientist Leads Discovery of 34 Ultracool Dwarf Binaries Using Archive at NSF’s NOIRLab"

Spitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project
Here's a press release about that paper, "Citizen Scientists Discover Dozens of New Cosmic Neighbors in NASA Data".

WISEA J041451.67-585456.7 and WISEA J181006.18-101000.5: The First Extreme T-type Subdwarfs?
Here's a press release about that paper, "Two Bizarre Brown Dwarfs Found With Citizen Scientists’ Help".

WISEA J083011.95+283716.0: A Missing Link Planetary-Mass Object
Here's a press release about this discovery, and the two extreme T-type subdwarfs (above): "Three Bizarre Brown Dwarfs Discovered by Citizen Scientists".

WISE2150-7520AB: A very low mass, wide co-moving brown dwarf system discovered through the citizen science project Backyard Worlds: Planet 9
Here's a press release about that paper: "Rare Brown Dwarf System Found by Citizen Scientists".

Our second paper describes a record-breaking "crystal ball" white dwarf with a dust disk: an analog for the future of our solar system. Here's the NASA press material and here's the paper in the Astrophysical Journal Letters.

The first Backyard Worlds: Planet 9 brown dwarf was discovered only six days after we launched! You can read about it here in out first paper, published in Astrophysical Journal Letters.

You can read more about our results in these blog posts:

One Hundred Thirty-One Brown Dwarfs

The Crystal Ball White Dwarf

42 Confirmed Brown Dwarfs and Counting

Thirteen Brown Dwarf Candidates...And Our Sensitivity Limits

More Discoveries: New Candidate L Dwarfs

Our First Discoveries

Stay tuned for more!