TESS News and Results

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TESS News and Results

Post by Sirius_Alpha on 2nd July 2018, 10:04 pm

Alright, as we all know, the TESS (Transiting Exoplanet Survey Satellite) mission is in space, and they've reached their science orbit. So we may as well start a TESS news and results thread. To commission it, there's great news on the fuel consumption.

https://twitter.com/LucaPlanets/status/1013707975058485248
The orbit adjust burns of @NASA_TESS were 10 times more precise than expected! It was so good that the spacecraft has fuel for >20 years of stable operations (!!) #Exoplanets2

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Re: TESS News and Results

Post by Led_Zep on 2nd July 2018, 10:53 pm

Good news ! But the problem with Kepler was reaction wheels...
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Re: TESS News and Results

Post by Sirius_Alpha on 28th July 2018, 12:53 am

After an extended commissioning period, TESS is now conducting normal science observations.
https://tess.mit.edu/news/nasas-tess-spacecraft-starts-science-operations/

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Re: TESS News and Results

Post by Sirius_Alpha on 1st September 2018, 12:01 pm


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Re: TESS News and Results

Post by Led_Zep on 3rd September 2018, 10:30 am

Twitter :

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Re: TESS News and Results

Post by Sirius_Alpha on 6th September 2018, 8:35 pm

Some transiting planet candidates detected from the ground in Antarctica, and in TESS's continuous viewing zone.

Exoplanets in the Antarctic sky. II. 116 Transiting Exoplanet Candidates found by AST3-II (CHESPA) within the Southern CVZ of TESS
https://arxiv.org/abs/1809.01789

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Re: TESS News and Results

Post by Sirius_Alpha on 17th September 2018, 8:34 pm

TESS's first planet discovery!!

TESS Discovery of a Transiting Super-Earth in the Π Mensae System
https://arxiv.org/abs/1809.05967

We report the detection of a transiting planet around π Mensae (HD\,39091), using data from the Transiting Exoplanet Survey Satellite (TESS). The solar-type host star is unusually bright (V=5.7) and was already known to host a Jovian planet on a highly eccentric, 5.7-year orbit. The newly discovered planet has a size of 2.14 0.04~R⊕ and an orbital period of 6.27 days. Radial-velocity data from the HARPS and AAT/UCLES archives also displays a 6.27-day periodicity, confirming the existence of the planet and leading to a mass determination of 4.82 0.85~M⊕. The star's proximity and brightness will facilitate further investigations, such as atmospheric spectroscopy, asteroseismology, the Rossiter-McLaughlin effect, astrometry, and direct imaging.

Following the Kepler naming scheme for objects of interest, π Men c is also known as TOI-144.01, which in itself tells you they may have already at least 143 more transiting planet candidates already that are awaiting confirmation.

Also, on the potential detection of π Men b with Gaia, they note that it will take the full five year mission to achieve a detection of 10σ, but,
Ranalli et al. (2018) predicted that the astrometric signal of π Men b will be detectable with a signal-to-noise ratio higher than 10 by the end of the mission. Indeed, the fit to the existing Gaia data exhibits an excess scatter of 295 " (37σ), perhaps a hint of planet-induced motion

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Re: TESS News and Results

Post by Edasich on 18th September 2018, 4:31 am

Notable discovery. Certainly there's much more to reveal... Very Happy
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Re: TESS News and Results

Post by Edasich Today at 4:07 am

It's quite time for TESS results...

TESS Discovery of an ultra-short-period planet around the nearby M dwarf LHS 3844

Data from the newly-commissioned Transiting Exoplanet Survey Satellite (TESS) has revealed a "hot Earth" around LHS 3844, an M dwarf located 15 pc away. The planet has a radius of 1.320.02 R⊕ and orbits the star every 11 hours. Although the existence of an atmosphere around such a strongly irradiated planet is questionable, the star is bright enough (I=11.9, K=9.1) for this possibility to be investigated with transit and occultation spectroscopy. The star's brightness and the planet's short period will also facilitate the measurement of the planet's mass through Doppler spectroscopy.
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Re: TESS News and Results

Post by Lazarus Today at 12:55 pm

Wonder if there will be a TESS-number system like Kepler, e.g. TESS-1c, TESS-2b, etc.

Given that ultra-short-period planets seem to often be in multi-planet systems, it will be interesting to see what future updates will happen for LHS 3844.
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Re: TESS News and Results

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