Spitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/2008.06396/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTSpitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project — mentioned by sradmanhttps://news.ycombinator.com/item?id=24236613urn:hackerpapers:mention:2008.06396:24236613Fri, 21 Aug 2020 16:54:00 GMT<p>The paper Spitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project [1]: &gt; We present Spitzer follow-up imaging of 95 candidate extremely cold brown dwarfs discovered by the Backyard Worlds: Planet 9 citizen science project, which uses visually perceived motion in multi-epoch WISE images to identify previously unrecognized substellar neighbors to the Sun. [1] https://arxiv.org/abs/2008.06396</p><p><a href="https://hackerpaper.kaipfister.de/p/2008.06396/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.SR