All Questions
Tagged with exoplanets exoplanets or
122 questions
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What is a simple way to estimate $σ_{RV}$ assuming photon noise in radial velocity measurements?
Hello there i have been trying to figure out what is wanted in the question "Simple way to estimate σ_RV assuming photon noise" for a presentation. But i can not seems to find much, but i ...
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SETI: Are there holes in the EM spectrum that are quiet enough to communicate at decently large distances?
So this is a variant of this other question.
I know stars are big, they radiate a lotta energy, they have spectral lines. But how dense are these spectral lines and is there a noise floor at ...
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Where can I find datasets for all confirmed exoplanets, terrestrial exoplanets, and Super-Earth exoplanets?
"The NASA Exoplanet Archive" (https://exoplanetarchive.ipac.caltech.edu/) implies that there are 5,197 confirmed exoplanets. The "5,197 Confirmed Planets 11/02/2022" link leads to ...
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Winds or waves in specific conditions?
Winds are mainly produced by differences in temperature of the atmosphere and waves are mainly produced by winds.
However, could a rogue planet (without orbiting any star and with a cold core so no ...
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Mean distance of objects of specific size in a given volume of space - visualization of planetary systems in the universe
This has been answered in this forum before in some ways I realize, but I have a rusty ability in calculus so was unable to make use of formulas!. Would love the help! I have been talking to my 11 ...
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How would I see if there is a transit in this light curve?
I am trying to detect if some binary star systems have exoplanets orbiting them. I've been completing this project for many weeks now, and have managed to write some code that will plot light curves ...
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Infrared Telescopes and Surface Area
I have been reading a paper on about exoplanets, specifically measuring the temperature of exoplanets using infrared telescopes.
The paper compares exoplanets with neutron stars (NS) remarking that ...
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Research on exoplanets using available data from TESS
I am a high school student who is proposing research on exoplanets for my junior research project, I have several questions:
I have seen studies where researchers survey star systems and then find ...
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Datasets for calculation of exoplanet properties
I would like to create program for calculation exoplanet properties, but I only found transit dataset from Kepler on NASA website. From light curve I can calculate:
planet radius $r$ from $\frac{r_{...
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Why is relativistic beaming/ Doppler beaming occur at non-relativistic speeds
The reflexive motion of a binary star system causes the host star to occasionally wobble towards and away from an observer on Earth, which gives rise to an effect called relativistic beaming. This is ...
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Finding distance Range for an Exoplanet to be detectable
I have been trying to solve the following problem, I found while reading some Exoplanet detection techniques, namely, radial velocity method and Astrometry.
Problem statement:
"
Imagine yourself ...
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Rayleigh Scattering and Red Giants
Rayleigh scattering is responsible for the color of the sky. Consider a planet with an atmospheric composition similar to Earth's but orbiting a red giant. Suppose further that the planet is in the ...
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Fusion inside a planet with high concentration of radioactive elements?
If an Earth-sized or larger planet had sufficiently large amounts of radium, thorium or uranium, couldn't the resulting fission trigger periodic fusion of hydrogen? I'm thinking of fission happening ...
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Toroidal planetary systems
Is it possible that two toroidal, rigid, homogeneous planets are forming a system in which the toroids are chained through each other, and during their mutual motion, the planets are never touching ...
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Is there an equation that can estimate chances of alien life in the universe?
Seeing how infinite the universe appears and out of all of those stars, planets, galaxies, there must be other life forms. Mathematically, the odds are very good. Is there a mathematical equation to ...
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how find resonance in extrasolar planet? [closed]
I make this program, i have a 2xN matrix in which the columns are the ID of planets and their period, the rows are the number of planets, for istance something like that:
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Did we adapt to Earth or Earth to us? [closed]
I often hear that Earth is a unique planet because it has life and it has its own inhabitance. We also see a proper balance between plants and humans and other animals. Why life is not possible on ...
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Why is Mars so cold when it has so much atmospheric $CO_2$?
Mars has 1/10 of Earth's atmosphere but that atmosphere is 95% CO2. Why is Mars so cold when it has so much atmospheric CO2?
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How is global warming distributed with respect to altitude?
Lets assume a sea level temperature increase 2c/3c. Then, what is the temperature increase at 10 km altitude? Temperature increase at 30 km altitude? Temperature increase at 70 km altitude? And ...
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Have scientists thought about these two questions? [closed]
I would like to know if our vision bends with the earth or if the earth truly is round. If I look through a strong enough telescope to see around the world, would I be able to see the back of my head? ...
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Are there laws of creation for biological life? [closed]
I am no scientist, but I do love science as well as the unknown. Are there laws of creation for biological life? Would it be safe to assume that our bodies are made up from things that came directly ...
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Why do we refer to life on Earth when we talk about life on other planets? [closed]
I have always had thoughts about extraterrestrial life and I wonder why researchers largely compare the conditions for existence of life to that on the Earth?
Is it impossible that on a remote ...
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