Diluvio de hierro en un exoplaneta
Un equipo científico internacional liderado por la Universidad de Ginebra y con participación del Centro de Astrobiología (CAB, CSIC-INTA) y del Instituto de Astrofísica de Canarias, ha descubierto un exoplaneta gigante con temperaturas diurnas capaces de vaporizar el hierro, y que podría condensar en gotas de lluvia en las regiones nocturnas. El hallazgo ha sido posible gracias al nuevo instrumento ESPRESSO instalado en el telescopio VLT del Observatorio Europeo Austral (ESO).
Los investigadores han utilizado el Very Large Telescope (VLT, telescopio muy grande) de ESO situado en Cerro Paranal en el desierto chileno de Atacama para observar el exoplaneta WASP-76b, situado a unos 390 años luz de distancia en la constelación de Piscis. Se trata de un exoplaneta gigante extremadamente caliente, con unas temperaturas diurnas que suben por encima de los 2400°C, lo suficientemente altas como para vaporizar metales como el hierro. Los fuertes vientos trasladan el vapor de hierro hacia las regiones nocturnas, más frías, con temperaturas que disminuyen hasta valores en torno a los 1500°C, que condensan el vapor en gotas que podrían precipitar como lluvia. «Se podría decir que este planeta se vuelve lluvioso por la noche, con la excepción de que llueve hierro», dice David Ehrenreich, investigador de la Universidad de Ginebra y autor principal del estudio publicado hoy en la revista Nature.
WASP-76b no sólo presenta diferencias notables de temperatura entre las caras diurna y nocturna, sino que también tiene una química distinta en ambas regiones, según el nuevo estudio. Utilizando el nuevo instrumento ESPRESSO (Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations, Espectógrafo Echelle para exoplanetas rocosos y observaciones espectroscópicas estables) instalado en el VLT, los investigadores identificaron por primera vez variaciones químicas en un exoplaneta gigante. Se ha detectado la firma inequívoca de la presencia de vapor de hierro en la zona del terminador, la frontera del planeta donde se pasa del día a la noche.
El fenómeno observado es debido a que el exoplaneta muestra siempre la misma cara a su estrella anfitriona, permaneciendo en noche perpetua en su cara oculta. Esta situación, conocida como “acoplamiento de marea”, es la misma que se da entre la Luna y la Tierra, y en ella el tiempo que tarda el exoplaneta en girar alrededor de su eje coincide con el tiempo que tarda en recorrer su órbita alrededor de la estrella anfitriona. El exoplaneta WASP-76b recibe miles de veces más radiación de su estrella anfitriona que la Tierra del Sol, lo que provoca que la temperatura en su cara diurna sea tan elevada que las moléculas se separen en átomos, y que metales como el hierro se encuentren en la atmósfera en forma de vapor.
Como señala María Rosa Zapatero Osorio, investigadora del CAB y coordinadora del equipo científico de ESPRESSO, “las observaciones muestran que el vapor de hierro es abundante en la atmósfera de la cara diurna y caliente de WASP-76b. Una parte de ese hierro es inyectada hacia la cara oscura del planeta debido a su rotación y los vientos atmosféricos. Allí, se topa con un ambiente enormemente más fresco, se condensa y precipita”.
El instrumento ESPRESSO fue diseñado originalmente para descubrir exoplanetas similares a la Tierra alrededor de estrellas similares al Sol, sin embargo, ha demostrado ser mucho más versátil. «Lo que tenemos ahora es una forma completamente nueva de rastrear el clima de los exoplanetas más extremos», concluye Ehrenreich.
Genuinely no matter if someone doesn’t be aware of then its up to other people that they will help, so here it happens.|
I quite like looking through an article that can make men and women think. Also, thanks for allowing me to comment!|
These are in fact impressive ideas in on the topic of blogging. You have touched some fastidious factors here. Any way keep up wrinting.|
Spot on with this write-up, I truly believe that this amazing site needs a great deal more attention. I’ll probably be back again to read more, thanks for the advice!
You could certainly see your enthusiasm in the work you write. The arena hopes for more passionate writers like you who are not afraid to mention how they believe. All the time follow your heart.|
I used to be suggested this blog by my cousin. I am now not sure whether this submit is written by means of him as no one else know such exact about my trouble. You are amazing! Thanks!|
I’m not sure exactly why but this weblog is loading incredibly slow for me. Is anyone else having this problem or is it a issue on my end? I’ll check back later on and see if the problem still exists.|
Good post. I learn something new and challenging on blogs I stumbleupon every day. It’s always helpful to read articles from other authors and use a little something from other sites. |
Once I initially commented I clicked the -Notify me when new comments are added- checkbox and now each time a remark is added I get 4 emails with the identical comment. Is there any way you’ll be able to remove me from that service? Thanks!
You could definitely see your enthusiasm in the work you write. The arena hopes for more passionate writers such as you who aren’t afraid to say how they believe. At all times follow your heart.
Unquestionably consider that which you stated. Your favourite justification seemed to be on the internet the easiest thing to understand of. I say to you, I definitely get irked at the same time as other folks consider worries that they just don’t understand about. You controlled to hit the nail upon the highest as well as defined out the entire thing with no need side-effects , folks could take a signal. Will likely be again to get more. Thank you
Hi there friends, its enormous post on the topic of tutoringand entirely explained, keep it up all the time.|
Your article has proven useful to me. I really like your article. Some nice points there. You appear to know a lot about this.
F*ckin? remarkable things here. I?m very happy to see your article. Thanks a lot and i am taking a look ahead to touch you. Will you kindly drop me a e-mail?
Thanks a bunch for sharing this with all people you actually know what you are speaking about! Bookmarked. Please additionally talk over with my website =). We will have a link trade arrangement among us|
Hey! Do you use Twitter? I’d like to follow you if that would be ok. I’m definitely enjoying your blog and look forward to new posts.|
Magnificent beat ! I would like to apprentice while you amend your web site, how can i subscribe for a blog site? The account aided me a acceptable deal. I had been a little bit acquainted of this your broadcast provided bright clear concept|
WOW just what I was searching for. Came here by searching for keyword|
http://www.factorytapestry.com is a Trusted Online Wall Hanging Tapestry Store. We are selling online art and decor since 2008, our digital business journey started in Australia. We sell 100 made-to-order quality printed soft fabric tapestry which are just too perfect for decor and gifting. We offer Up-to 50 percent OFF Storewide Sale across all the Wall Hanging Tapestries. We provide Fast Shipping USA, CAN, UK, EUR, AUS, NZ, ASIA and Worldwide Delivery across 100+ countries.
This web site definitely has all the information and facts I wanted about this subject and didn’t know who to ask. |
http://www.factorytapestry.com is a Trusted Online Wall Hanging Tapestry Store. We are selling online art and decor since 2008, our digital business journey started in Australia. We sell 100 made-to-order quality printed soft fabric tapestry which are just too perfect for decor and gifting. We offer Up-to 50 percent OFF Storewide Sale across all the Wall Hanging Tapestries. We provide Fast Shipping USA, CAN, UK, EUR, AUS, NZ, ASIA and Worldwide Delivery across 100+ countries.
It’s wonderful that you are getting ideas from this post as well as from our discussion made at this place.|
I blog quite often and I genuinely appreciate your information. The article has truly peaked my interest. I will bookmark your site and keep checking for new details about once a week. I subscribed to your Feed too.
My brother recommended I might like this web site. He was totally right. This post actually made my day. You can not imagine simply how much time I had spent for this info! Thanks!|
I have taken notice that in cameras, specialized sensors help to {focus|concentrate|maintain focus|target|a**** automatically. The actual sensors connected with some surveillance cameras change in in the area of contrast, while others utilize a beam of infra-red (IR) light, specifically in low lighting. Higher specs cameras sometimes use a blend of both systems and probably have Face Priority AF where the photographic camera can ‘See’ a face and focus only on that. Thanks for sharing your thinking on this site.
I would like to thnkx for the efforts you have put in writing this website. I’m hoping the same high-grade web site post from you in the upcoming also. In fact your creative writing abilities has encouraged me to get my own blog now. Really the blogging is spreading its wings quickly. Your write up is a good example of it.
Hello, this weekend is fastidious designed for me, as this point in time i am reading this enormous educational piece of writing here at my house.|
It’s truly a nice and useful piece of info. I’m satisfied that you just shared this helpful information with us. Please stay us up to date like this. Thanks for sharing.|
I’m usually to blogging and i really admire your content. The article has really peaks my interest. I’m going to bookmark your site and preserve checking for brand spanking new information.
Hi are using WordPress for your site platform? I’m new to the blog world but I’m trying to get started and create my own. Do you need any coding knowledge to make your own blog? Any help would be greatly appreciated!
I savor, result in I found exactly what I was looking for. You have ended my 4 day lengthy hunt! God Bless you man. Have a great day. Bye|
Hi, i think that i saw you visited my site so i came to “return the favor”.I am trying to find things to enhance my web site!I suppose its ok to use some of your ideas!!|
There’s certainly a great deal to find out about this topic. I like all the points you have made.
Nice read, I just passed this onto a friend who was doing some research on that. And he actually bought me lunch as I found it for him smile Thus let me rephrase that: Thanks for lunch!
Nice post. I used to be checking constantly this weblog and I am inspired! Very helpful information specifically the remaining phase 🙂 I deal with such information much. I was looking for this certain information for a long time. Thanks and good luck. |
I am regular visitor, how are you everybody? This post posted at this website is really nice.|
Greetings! I’ve been following your site for a long time now and finally got the bravery to go ahead and give you a shout out from Humble Texas! Just wanted to say keep up the fantastic work!
Thanks for the points shared using your blog. Another thing I would like to express is that weight loss is not supposed to be about going on a dietary fad and trying to lose as much weight as you’re able in a set period of time. The most effective way to lose weight is by acquiring it slowly and gradually and using some basic tips which can allow you to make the most from a attempt to lose weight. You may be aware and be following these tips, yet reinforcing understanding never affects.
It’s an remarkable piece of writing designed for all the online users; they will obtain benefit from it I am sure.|
Hi! Quick question that’s completely off topic. Do you know how to make your site mobile friendly? My web site looks weird when viewing from my apple iphone. I’m trying to find a template or plugin that might be able to fix this issue. If you have any suggestions, please share. Many thanks!|
Have you ever thought about writing an ebook or guest authoring on other websites? I have a blog centered on the same subjects you discuss and would love to have you share some stories/information. I know my viewers would value your work. If you’re even remotely interested, feel free to shoot me an email.|
Hmm it seems like your website ate my first comment (it was super long) so I guess I’ll just sum it up what I had written and say, I’m thoroughly enjoying your blog. I as well am an aspiring blog blogger but I’m still new to everything. Do you have any tips and hints for inexperienced blog writers? I’d genuinely appreciate it.|
After I originally left a comment I appear to have clicked the -Notify me when new comments are added- checkbox and now whenever a comment is added I recieve four emails with the same comment. Perhaps there is a way you can remove me from that service? Thanks!|
Stunning story there. What happened after? Take care!|
Wow, this article is nice, my sister is analyzing these things, so I am going to let know her.|
Heya i am for the first time here. I came across this board and I find It truly useful & it helped me out much. I hope to give something back and help others like you aided me.|