Wolf 1069B: Earth-mass planet in the habitable zone of a nearby, low-mass star

Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by CyanBird on Sunday January 08, 2023 @10:23PM (#34306350)

15 day orbit, 170 day planetary rotation, that's an interesting one

Sucks for the amount of radiation ofc

Would be interesting to hypothesize of it being a larger mercury like planet than a earth like one

Please some more up to date astro-duders out there, is the James Webb currently capable of direct spectrography of exoplanets? We can do spectrography during the transit I am aware, but direct spectrography, is that possible? Specially when we are talking of an infrared telescope

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by JumpCrisscross on Sunday January 08, 2023 @10:26PM (#34306373)

> is the James Webb currently capable of direct spectrography of exoplanets?

Yes [1].

[1] https://www.sciencenews.org/article/james-webb-space-telesco...

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by ethbr0 on Sunday January 08, 2023 @10:31PM (#34306416)

That's sheer insanity. It's mind boggling that at that distance (and therefore footprint on the optical elements) you can directly resolve something even as small as 7x Jupiter.

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by nick889996544 on Monday January 09, 2023 @11:07AM (#34311906)

Yes, but... Wolf 1069B is much smaller and closer to its star than this one, so we probably couldn't observe it with Webb.

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by nigerianbrince on Sunday January 08, 2023 @10:27PM (#34306383)

Could be a non problem depending on the atmosphere

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by CyanBird on Monday January 16, 2023 @01:49AM (#34397644)

That's the thing, this rock wont have athmosphere, so close to the host star, it would have been blown away

That's why I mentioned the hypothesized mercury situation, as mercury has got a very thin mantle and its core is VERY outsided, so it has got a very strong magnetic field. This is consequence of likely early solar system crash, Mercury might just be the core remnants of a planetary collision elsewhere

But yeah, this rock wont have athmosphere

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by fernly on Sunday January 08, 2023 @11:29PM (#34306762)

The wording is a little ambiguous but I read the abstract as talking about the _stellar_ rotation period being ~170d. Not the planet. The star rotating adds a low-frequency signal that interfered with the effect of the planet.

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Re:Wolf 1069B: Earth-mass planet in the habitable zone of a ... by ravel-bar-foo on Monday January 09, 2023 @12:54AM (#34307268)

Anything in a 15 day orbit of its host star would be tidally locked, no?

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