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Planet Hunters
Добавлен 5 май 2021
Imagine sitting in a coffee shop with friends having a catch up about science in space - exciting new planet discoveries and the astronomers who find them, the resources they used to track planet transits, and why this is important.
Planet Hunters Coffee Chat is just this - a community-driven, citizen science gathering of like-minded people. Whether you're new to citizen science projects or have previously participated, the Planet Hunters Coffee Chat team will empower you with the same tools and resources that astronomers use to make credible discoveries while sifting through data.
Grab your favorite Coffee Chat drink and join us. Make a real contribution to science!
Planet Hunters Coffee Chat works in collaboration with Zooniverse, University of Oxford, and NASA Ames Research Center and is complementary to the Planet Hunters TESS (Transiting Exoplanet Survey Satellite) project, which provides vast quantities of data that enable us to look for exoplanets.
Planet Hunters Coffee Chat is just this - a community-driven, citizen science gathering of like-minded people. Whether you're new to citizen science projects or have previously participated, the Planet Hunters Coffee Chat team will empower you with the same tools and resources that astronomers use to make credible discoveries while sifting through data.
Grab your favorite Coffee Chat drink and join us. Make a real contribution to science!
Planet Hunters Coffee Chat works in collaboration with Zooniverse, University of Oxford, and NASA Ames Research Center and is complementary to the Planet Hunters TESS (Transiting Exoplanet Survey Satellite) project, which provides vast quantities of data that enable us to look for exoplanets.
Determining the mass and radius of a transiting planet (TIC 55525572) Episode 40
Hello and welcome to our 40th episode of Coffee Chat! Thank you for sticking with us - an extra special shout-out to those of you who've asked questions and contributed to the TESS Talk Forum.
Today, we're looking at Nora's favourite TIC ID (TIC55525572) and using what we've learned in the last two episodes to determine a transiting planet's mass and radius.
This video will make more sense if you've already watched episodes 38 and 39. If you haven't already, go back and watch them now.
Episode 38 on radial velocity: ruclips.net/video/yjliMlCkzv0/видео.html
Episode 39 on asteroseismology: ruclips.net/video/bd33Ku5BJn4/видео.html
To follow along with this episode, download the code from our web...
Today, we're looking at Nora's favourite TIC ID (TIC55525572) and using what we've learned in the last two episodes to determine a transiting planet's mass and radius.
This video will make more sense if you've already watched episodes 38 and 39. If you haven't already, go back and watch them now.
Episode 38 on radial velocity: ruclips.net/video/yjliMlCkzv0/видео.html
Episode 39 on asteroseismology: ruclips.net/video/bd33Ku5BJn4/видео.html
To follow along with this episode, download the code from our web...
Просмотров: 1 100
Видео
How do you estimate a star's mass and radius using asteroseismology? Episode 39
Просмотров 5242 года назад
Welcome to episode 39 of Coffee Chat! Today, the star of our show, Nora Eisner, is joined by friend of the show, 'star person' Cole Johnston! We learn about asteroseismology - a fun topic and odd word. Follow along as Cole shows us how to measure a star's mass and radius. You won't want to miss Nora's coffee-based demonstrations! For more about stellar pulsations, check out episode 37 (if you h...
How is radial velocity (RV) used to discover exoplanets? Episode 38
Просмотров 1,6 тыс.2 года назад
Planet Hunters Coffee Chat is back! Welcome to our 38th episode. We hope you've had a relaxing break from exoplanet science (Nora definitely needs one of those now she's finished writing her thesis!) Today, we're learning about another method used to detect exoplanets, called radial velocity (RV). You'll have heard us mention this in previous episodes but in this episode, we're getting into the...
What does a star spot look like? Episode 37
Просмотров 3292 года назад
Hello and welcome to another episode of Coffee Chat! Pour yourself a cup of your favorite beverage and settle in - we're continuing with the star theme for one more episode! Today, we're going to learn about stellar signals that can interfere with our planet hunting. Do you think you might have come across a star spot in TESS data? You can download a Jupyter or Colab notebook to follow along wi...
How will the triple star system evolve? (TIC 470710327 part 5) Episode 36
Просмотров 2142 года назад
Hello and welcome to episode 36 of Coffee Chat! Today, Nora and Kassie are looking to the future and the evolution of the triple star system (TIC 470710327). This is the fifth and final video in this series. Thanks to all of you exoplanet fans for sticking with us as we talked through this stellar discovery (pun absolutely intended). If you don't know what we're talking about, go back and check...
Nora and Cole answer your questions about the triple star system (TIC 470710327 part 4) Episode 35
Просмотров 1832 года назад
In episode 35 of Coffee Chat, we're joined by our favorite exoplanet expert and our favorite stellar expert - it's Nora and Cole! Today, we're answering your questions about TIC 470710327. Thanks to everyone who asked about TIC 470710327 in the comments and on social media. This is our fourth video about the triple star system - if you haven't already, go back and check out the first video now:...
How does a triple star system form? (TIC 470710327 part 3) Episode 34
Просмотров 2452 года назад
In episode 34 of Coffee Chat, we're joined by a special guest - stellar expert Abigail Frost from KU Leuven! Today, we're learning how the massive stars in TIC 470710327 formed. This is part three of a three-part series looking at how this triple star system was discovered. If you missed part one, go back and check it out now: ruclips.net/video/kr9mHqiLPoA/видео.html If you have any questions f...
Next steps to finding a triple star system using radial velocity (TIC 470710327 part 2) Episode 33
Просмотров 2142 года назад
It's our 33rd episode of Coffee Chat and we're diving deeper into a newly discovered triple star system (three is our lucky number!) We've got Cole joining us today - stay tuned to learn more about radial velocity. There will be props and some telescope-related travel advice! This is part two of a three-part series looking at how the discovery was made from start to finish. If you missed part o...
First steps to finding a triple star system in TESS data (TIC 470710327 part 1) Episode 32
Просмотров 4152 года назад
Hello and welcome to episode 32! We've got something a little different for you this week. With thirty thousand citizen scientists searching searching through TESS data, we've had many exciting discoveries, including some that have nothing to do with planets at all! We're taking a look at one of these discoveries - a triple star system - which has recently been published by Nora. This is part o...
Guess the star is back! What causes these interesting light curves? Episode 31
Просмотров 2782 года назад
Hello and welcome to another episode of Coffee Chat. We hope you've had a happy Valentine's Day! We're joined once again by our favorite stellar expert, Cole Johnston. Can you guess the light curve? Let us know how many you got in the comments. If you'd like to check out our 'light curve of the week' posts, follow us on social media. Facebook: planethunters Twitter: pla...
7 steps to identify a good exoplanet candidate - Episode 30!
Просмотров 9462 года назад
Hello and welcome to our 30th episode! First off, a huuuuge thank you to everyone who has watched all of our videos, asked questions, joined us for live office hours and contributed to the TESS Talk Forum. And congratulations to those who have already found good planet candidates by following us on this journey! This is 'citizen science 2.0'. In today's episode, Kassie and Nora are going to go ...
How do I download data vetting (DV) reports from exo.MAST and what do they mean? Episode 29
Просмотров 3772 года назад
Hello and welcome to another episode of Planet Hunters Coffee Chat! Today, we're going back to exo.MAST to look at some data vetting (DV) reports. Nora - a recent exo.MAST convert - shows Kassie how to download the reports and goes through what the different plots mean. If you remember how to look up and download DV reports, you can skip to 03:40 Follow along with exo.MAST here: exo.mast.stsci....
What is Box Least Squares (BLS) analysis and how is it used to find exoplanets? Episode 28
Просмотров 1,2 тыс.2 года назад
Hello, happy Tuesday! Welcome along to another episode of Planet Hunters Coffee Chat. Today we're recapping something from our very first episode - detecting transit-like events using an algorithm. Except this time we're going to try it for ourselves! As always, the code from this episode can be downloaded from our website: www.planethunters.coffee/steps-to-identifying-a-planet If you remember ...
How do odd/even transits help rule out false positives? Episode 27
Просмотров 5732 года назад
Hello friends, welcome to another episode of Planet Hunters Coffee Chat. What are you drinking today? In response to some viewer questions, we're continuing our 'ruling out false positives' series and are going to learn about odd/even transits. If you missed our last false positives tutorial on LATTE (not the coffee - the Lightcurve Analysis Tool for Transiting Exoplanets), you can catch up her...
How do you look up an exoplanet candidate with exo.MAST? Episode 26
Просмотров 4902 года назад
Hello and welcome to the first Coffee Chat of 2022! We hope you had a happy and healthy holiday season. In today's episode, Nora shows Kassie how to use exo.MAST. If you haven't already, check out our videos on using MAST (ruclips.net/video/39dmAusrI0k/видео.html) and ExoFOP (ruclips.net/video/5e6uBuUWR_M/видео.html) because exo.MAST is a cross between the two! You can try exo.MAST for yourself...
Guess the star with Nora and Cole! What causes these interesting light curves? Episode 25
Просмотров 3782 года назад
Guess the star with Nora and Cole! What causes these interesting light curves? Episode 25
Nora Eisner shares her science journey (podcast) - Coffee Chat Episode 24
Просмотров 3382 года назад
Nora Eisner shares her science journey (podcast) - Coffee Chat Episode 24
Guess the star! What causes these interesting light curves? Episode 23
Просмотров 4052 года назад
Guess the star! What causes these interesting light curves? Episode 23
How can we detect exoplanets using transit time variations? Episode 22
Просмотров 5212 года назад
How can we detect exoplanets using transit time variations? Episode 22
Halloween Special: Nora quizzes Kassie on astronomy abbreviations! Episode 21
Просмотров 1862 года назад
Halloween Special: Nora quizzes Kassie on astronomy abbreviations! Episode 21
What does stellar variability look like for different types of stars? Episode 20
Просмотров 6402 года назад
What does stellar variability look like for different types of stars? Episode 20
How can I use LATTE to rule out false positives? Episode 19
Просмотров 5352 года назад
How can I use LATTE to rule out false positives? Episode 19
How can the nearest neighbor stars tell you about systematics and asteroids? Episode 18
Просмотров 3622 года назад
How can the nearest neighbor stars tell you about systematics and asteroids? Episode 18
How do we rule out false positives using centroid motion? Episode 17
Просмотров 4362 года назад
How do we rule out false positives using centroid motion? Episode 17
How do we rule out false positives using target pixel files? Episode 16
Просмотров 4912 года назад
How do we rule out false positives using target pixel files? Episode 16
How do we rule out false positives using the background flux? Episode 15
Просмотров 7262 года назад
How do we rule out false positives using the background flux? Episode 15
Why are transit shapes different? Episode 14
Просмотров 6692 года назад
Why are transit shapes different? Episode 14
How can you determine an exoplanet's orbital period? Episode 13
Просмотров 9243 года назад
How can you determine an exoplanet's orbital period? Episode 13
How can we determine the size of a planet we're looking at? Episode 12
Просмотров 1,2 тыс.3 года назад
How can we determine the size of a planet we're looking at? Episode 12
What is phase folding and how can it help to find exoplanets? Episode 11
Просмотров 2 тыс.3 года назад
What is phase folding and how can it help to find exoplanets? Episode 11
Still not 100%
im glad you made this series. definitely helps speed up the learning curve on how to look at the data. if i find something interesting the software sends the report to you? i want to create a website were people can just punch n a number and all this stuff happens in the background and it displays the results on the webpage.
Currently studying a MSc in Space Science and Technology so I am trying to absorb as much info and skills as possible. These videos are amazing, I'm particularly interested in exoplanets, so I fully intend to get involved.
come back :((
Hello, I have a question. I can't access the following link where we can download the codes. I would like to create a pixel-by-pixel light curve. Has it been removed?
Website is down😭😭
I can't describe in words how much it is helpful for me
how do you take t0
does every case have the period as the period of the planet
im not able to use bin when ever i write it it just shows light curve collection has no atribute bin
Why do you plot flux on the y axis which has units electrons per second? To my understanding the CCD opens up for a number of seconds and collects a number of photons which is then converted to number of electrons. But this means we measure a certain absolute number of electrons during the exposure time. Therefore, why not plot electrons vs time?
Why do you plot flux on the y axis which has units electrons per second? To my understanding the CCD opens up for a number of seconds and collects a number of photons which is then converted to number of electrons. But this means we measure a certain absolute number of electrons during the exposure time. Therefore, why not plot electrons vs time?
Poderia fazer um vídeo falando sobre vizier
I am getting a lot of errors on plotting. It only shows the top plot and since the functions are very complicated I can't understand right away what is going on, perhaps other changes in astropy: ---> 69 plot_bls(alltime, allflux, alltimebinned, allfluxbinned, model, results, period, duration, t0, mid_transit_t0) ---> 72 ax.plot(alltime, allflux, marker =".", alpha = 0.4, color = color2, ms=2, lw = 0, MarkerFaceColor = 'none')
Hello I thought the period would be determined by a Fourier transform, isn't it a safe method?
As of 2024, I'm using jupyter notebook on VS Code, I had to change the first line "%matplotlib notebook" to "%matplotlib inline" in order to plot the data. Otherwise I get an error with the output instead of the figure, just the line "<Axes: xlabel='Time', ylabel='Flux [$\\mathrm{e^{-}\\,s^{-1}}$]'>"
in am getting an error while running the bin code LightCurveCollection' object has no attribute 'bin' any idea how to solve this
Is there anyway I could get a link to the Pinnetti tool (I think it might be spelled that way) to try and run light curves with. Thank you, Tom M. Great videos BTW. Love them.
These videos are life saver! Nora's explanation of the concepts is awesome!!!!!!
Nice
Hello. Now in MAST the timeseries icon no longer appears, how can this work be done now? Greetings.
Hi Nora! If my star has 8 dips / transits, should I make the phase folding before apply your method (plot_pixel_level_LC)? Or can I choose a transit time of any these 8 transits (e.g. I choose the Epoch)?
Great series! Hope you will return with new episodes soon!
Thanks for these great episodes, they are really interesting and easy to understand! More episodes on asteroseismology would be better--for example on pulsating white dwarfs , how to classifying stars.
I feel like I'm arriving a little later to the party, but would like to contribute. Do the videos cover how potential finds are reported?
How woukd like to know how to find five new planets through old archive photos and views of the night skies. Truth
I am here! I would love to do more exoplanet research once my master's done this semester! NIce communication!
Thank you very much...Soo easy to understand...
Great!!!👍
This is lovely, thank you.
try to do these kind of episodes using "least square method" please
Thanks for sharing this concept
Where can I get a TIC for any object?
Hi, first thanks for the videos and for the learning. I've been using lightkurve for some time now and I believe I've found two exoplanet candidates. But I don't know where to report this, or if I should. What happens to the candidates the "citizen scientist" encounters? Thanks
Hello I hope I am not too late to get answered.. So I am plotting multiple sectors and let's say I want to study long-period variable stars, which have these offsets between each sector, the normalization also won't help me because it will put every sector around one. Is it there any automatic workaround to remove the offsets without normalizing around one?
Typed in TIC 284475976 into Simbad and it worked, resolved to WASP-48.
Cool!
I think you guys havent uploaded the jupyter notebook for this episode!! Aaaaaaaaaaaaa im crying 🥲🥲
how do i plot a lightcurve from a .lc file that is downloaded
when im doing the graph at IN[140] for 'TIC 393546540' at this: # let's plot the data rv_list = rv_list - np.median(rv_list) fig, ax = plt.subplots(figsize = (8,4)) plt.scatter(time_list, rv_list) plt.xlabel("Time (BJD)") plt.ylabel("RV (m/s)") the graph only gives out one singular circular plot? I didn't change any *SINGLE* line of code aside from my own directory above. What happens here? Can @Planet Hunters run this for 'TIC 393546540' for me?
try either do this at the top of the cell: %matplotlib inline or check the fits file headers and make sure you are grabbing the right RV data
@@Tyler-by2uo thank you! Finally after 8 months
How do I check for false positives aside from using LATTE? My windows is crying real tears here!!
very helpful video, thanks!
You're welcome!
WHAT IS THE MEANING OF THE HUGE MIDDLE DIP / GAP IN SAP FILE
The data gap in the middle is when TESS sends data back to Earth. The satellite is slightly unstable just before and after that, so the data can look a bit odd on either side of the gap.
Thanks for answering Nora and Cole! And thanks for asking the question for me, Kassie!
Thanks as ever, I can't believe its 40? Have a good break and I look forward to the new approach.
Does anyone has any book or litterateur or links to the websites on which I can understand these concepts in details?
Have you found any? If so, please do let me know!
Thanks for that - very interesting. More episodes on asteroseismology would be great - maybe on classifying stars and other types of stars than the solar-like oscillators.
Hello revered scientists, but I haven't been able to find the location where this code is actually, would you be so kind as to add at least a link to that notebook? greatfully your's ... désolé , mais je suis un peu empoté , et bonne chance pour votre soutenance Nora ;-)
Sorry about that! Our website was undergoing some maintenance and we're just updating the links in our episode descriptions. You can download the Jupyter notebook from our website here: www.planethunters.coffee/steps-to-identifying-a-planet
Thansks again, all very interesting, I keep learning stuff, its great.
Awesome job Cole and Nora!! :D
Thank you for another great episode!