An ultra-cool dwarf is a stellar or sub-stellar object of spectral class M that has an effective temperature under 2,700 K (2,430 °C; 4,400 °F). TRAPPIST-1 is one of the best known examples of an ultra-cool dwarf star. – Image credit: ESO/M. Kornmesser
Related channels: TRAPPIST-1 SYSTEM, STARS, EXOPLANETS, KEPLER SPACE TELESCOPE, SPITZER SPACE TELESCOPE, SETI INSTITUTE, SPACE COLONIZATION, ALPHA CENTAURI, THE MILKY WAY, RADIO ASTRONOMY
The Ultracool TRAPPIST-1 System: 7 Terrestrial Worlds, 7 Chances for Ice and Life
Planetary scientist Dr. Susan Lederer of the Astromaterials Research and Exploration Science (ARES) Division at the NASA’s Johnson Space Center discusses the discovery of the TRAPPIST-1 extrasolar system. Lederer also discusses the potential habitability of the seven planets orbiting the parent star. This was the fifth and final presentation in the Lunar and Planetary Institute’s 2017–2018 Cosmic Exploration Speaker Series, “Diving into Ocean Worlds.”
VLBA Astrometric Ultracool Dwarf and Exoplanet Side By Side
https://scitechdaily.com/saturn-sized-exoplanet-discovered-by-the-gravitational-wobble-in-the-small-cool-star-it-orbits/ Side-by-side animations of the star and planet orbiting their common center of gravity (barycenter), and of the pair moving through space as they orbit, creating the star's "wobble" that revealed the planet. Credit: Bill Saxton, NRAO/AUI/NSF
Ultracool Dwarf Stars And Habitable Planets | Talk Nerdy To Me Ep. 1
What do ultracool dwarf stars have to do with the search for life in the universe? A lot. In the first episode of the relaunched HuffPost Originals show 'Talk Nerdy To Me,' host Karah Preiss looks into the recent discovery of three new planets. Watch the entire series: http://shows.huffingtonpost.com/talknerdytome Subscribe To Talk Nerdy To Me! https://www.youtube.com/c/talknerdytomehp Get More HuffPost!
The Ultra-Cool Dwarf: TRAPPIST-1 | Elisabeth Newton
Astronomers just announced the discovery of seven Earth-sized transiting planets around TRAPPIST-1! Elisabeth Newton, who studies very small stars like TRAPPIST-1, came by the Cool Worlds Lab to tell us about how this star might affect the prospects for life on these potentially habitable worlds. ::More about this Video:: ► Gillon et al. (2017), "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1": http://www.nature.com/nature/journal/v542/n7642/full/nature21360.html
► O'Malley-James & Kaltenegger (2017), "UV Surface Habitability of the TRAPPIST-1 System": https://arxiv.org/abs/1702.06936
► TRAPPIST-1 website: www.trappist.one
► Elisabeth Newton's website: https://www.cfa.harvard.edu/~enewton/
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ESOcast 83: Ultracool Dwarf with Planets
Astronomers using telescopes at ESO's observatories in Chile have discovered three planets around a dim dwarf star just 40 light-years from Earth. These worlds have sizes and temperatures similar to those of Venus and the Earth, and they are the best targets so far found in the hunt for life elsewhere in the Universe. More information and download options: http://www.eso.org/public/videos/eso1615a/ Subscribe to ESOcast in iTunes! https://itunes.apple.com/podcast/esocast-hd/id295471183?mt=2 Receive future episodes on YouTube by pressing the Subscribe button above or follow us on Vimeo: https://vimeo.com/esoastronomy Watch more ESOcast episodes: http://www.eso.org/public/videos/archive/category/esocast/ Find out how to view and contribute subtitles for the ESOcast in multiple languages, or translate this video on dotSUB: http://www.eso.org/public/outreach/partnerships/translators/ Credit:
Editing: Herbert Zodet.
Web and technical support: Mathias André and Raquel Yumi Shida.
Written by: Peter Grimley and Richard Hook.
Narration: Sara Mendes da Costa.
Music: tonelabs (tonelabs.com).
Footage and photos: ESO, L. Calçada, M. Kornmesser, ALMA (ESO/NAOJ/NRAO), NASA, ESA/
Hubble, F. Pont (Exeter University, UK), A. Lecavelier des Etangs (IAP/CNRS/UPMC, France),
Alexandre Santerne (Instituto de Astrofísica e Ciências do Espaço,
Universidade do Porto) /Planetário do Porto - Centro Ciência Viva,
Gianluca Lombardi (glphoto.it), B. Tafreshi (twanight.org), Theofanis Matsopoulos,
NASA Goddard Space Flight Center Conceptual Image Lab,
Chris Meaney (HTSI): Lead Animator and Nick Risinger (skysurvey.org).
Directed by: Herbert Zodet.
Executive producer: Lars Lindberg Christensen.