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Eccentric exoplanet discovered

Dragon
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Eccentric exoplanet discovered Empty Eccentric exoplanet discovered

Post by Dragon Mon Jan 10, 2022 12:36 am

Led by the University of Bern, an international research team has discovered a sub-Neptune exoplanet orbiting a red dwarf star.

The discovery was also made thanks to observations performed by the SAINT-EX observatory in Mexico.

SAINT-EX is run by a consortium including the Center for Space and Habitability (CSH) at the University of Bern and the National Center of Competence in Research NCCR PlanetS.

"Red dwarfs" are small stars and thus much cooler than our Sun.

Around stars like these, liquid water is possible on planets much closer to the star than in our solar system.

The distance between an exoplanet and its star is a crucial factor in its detection: the closer a planet is to its host star, the higher the probability that it can be detected.


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Post by Dragon Mon Jan 10, 2022 12:38 am

Eccentric exoplanet discovered Eccentric-exoplanet-di
Credit: DOI: 10.1051/0004-6361/202142280

TESS target pixel files of Sectors 14, 20, 21, and 26 that observed TOI-2257, generated by means of tpfplotter (Aller et al. 2020).

The apertures used to extract the photometry by the SPOC pipeline are shown as red shaded regions.

The Gaia DR2 catalog (Gaia Collaboration 2018) is over-plotted, with all sources of up to 6 magnitudes in contrast with TOI-2257 shown as red circles.

We note that the symbol size scales with the magnitude contrast.

While the star is relatively isolated, there is a small amount of contamination from outside sources, ranging from 2–5% of the total flux.


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Eccentric exoplanet discovered 334pu7m
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Post by Dragon Mon Jan 10, 2022 12:40 am



There's a huge amount of variety among exoplanets – planets outside our solar system.

There are water worlds, lava planets, egg-shaped worlds, planets with multiple suns, and even planets with no sun at all!


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