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 Post subject: Re: TRAPPIST-1
PostPosted: Thu, 07-12-17, 22:29 GMT 
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https://arxiv.org/abs/1712.01911

Stellar parameters for TRAPPIST-1

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 Post subject: Re: TRAPPIST-1
PostPosted: Fri, 08-12-17, 7:02 GMT 
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Thanks, symaski62!

Cheers,
Fridger

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 Post subject: Re: TRAPPIST-1
PostPosted: Mon, 18-12-17, 16:16 GMT 
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https://arxiv.org/abs/1712.05641

Interior Structures and Tidal Heating in the TRAPPIST-1 Planets

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 Post subject: Re: TRAPPIST-1
PostPosted: Wed, 03-01-18, 12:09 GMT 
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https://arxiv.org/abs/1801.00738

The hidden depths of planetary atmospheres

We explore how the location of this refractive boundary in exoplanet transits changes in a well-mixed isothermal atmosphere with its temperature and composition, the spectral type of the planet's host star, and the size of the planet. We demonstrate that five extra scale heights of atmosphere are hidden in a terrestrial planet with a CO2 atmosphere compared to a helium atmosphere, resulting in a flatter spectrum than from its smaller scale height alone. We provide results for a few exoplanets, notably those in the TRAPPIST-1 system, to help the scientific community estimate the impact of refraction on the size of spectral features without radiative transfer calculations, and thus help refine planned James Web Space Telescope observations.

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 Post subject: Re: TRAPPIST-1
PostPosted: Tue, 09-01-18, 2:49 GMT 
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https://arxiv.org/abs/1801.02554

Early 2017 observations of TRAPPIST-1 with Spitzer

To further advance our understanding of these planets' compositions, energy budgets, and dynamics, we are carrying out an intensive photometric monitoring campaign of their transits with the Spitzer Space Telescope. In this context, we present 60 new transits of the TRAPPIST-1 planets observed with Spitzer/IRAC in February and March 2017.

pages 7 => Table 1. Updated system parameters: median values and 1-σ limits of the posterior PDFs derived from our global MCMC analysis


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 Post subject: Re: TRAPPIST-1
PostPosted: Thu, 11-01-18, 13:04 GMT 
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Thanks, symaski62,

that TRAPPIST-1 paper is quite interesting!

Regards,
Fridger

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 Post subject: Re: TRAPPIST-1
PostPosted: Mon, 05-02-18, 18:36 GMT 
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http://www.eso.org/public/news/eso1805/?lang

eso1805 — Science Release

TRAPPIST-1 Planets Probably Rich in Water

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 Post subject: Re: TRAPPIST-1
PostPosted: Thu, 15-03-18, 13:45 GMT 
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https://arxiv.org/abs/1803.04543

Possible Bright Starspots on TRAPPIST-1

The M8V star TRAPPIST-1 hosts seven roughly Earth-sized planets and is a promising target for exoplanet characterization. Kepler/K2 Campaign 12 observations of TRAPPIST-1 in the optical show an apparent rotational modulation with a 3.3 day period

:shock: 3.3 days !


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