Alejandro Lumbreras-Calle
@alumbrerasc.bsky.social
PhD in Astrophysics. UCM, IAC, and now a postdoc at CEFCA (Teruel, Spain). Star-forming galaxies and galaxy evolution.
We've been following 3I/ATLAS from @cefca-oaj.bsky.social in Spain (Teruel)!
This is just the 3rd interstellar object that we see enter the Solar System.
I created this video with the observations🔭 we have made: you can see the comet moving through the field of stars.
We hope to get more data!
This is just the 3rd interstellar object that we see enter the Solar System.
I created this video with the observations🔭 we have made: you can see the comet moving through the field of stars.
We hope to get more data!
July 22, 2025 at 6:23 PM
We've been following 3I/ATLAS from @cefca-oaj.bsky.social in Spain (Teruel)!
This is just the 3rd interstellar object that we see enter the Solar System.
I created this video with the observations🔭 we have made: you can see the comet moving through the field of stars.
We hope to get more data!
This is just the 3rd interstellar object that we see enter the Solar System.
I created this video with the observations🔭 we have made: you can see the comet moving through the field of stars.
We hope to get more data!
Hasta el Torico ha mirado al #EclipseSolar hoy en Teruel!
Even the statue of the Torico (little bull) was looking at the #solareclipse2025 today in Teruel (Spain)!
Even the statue of the Torico (little bull) was looking at the #solareclipse2025 today in Teruel (Spain)!
March 29, 2025 at 3:22 PM
Hasta el Torico ha mirado al #EclipseSolar hoy en Teruel!
Even the statue of the Torico (little bull) was looking at the #solareclipse2025 today in Teruel (Spain)!
Even the statue of the Torico (little bull) was looking at the #solareclipse2025 today in Teruel (Spain)!
Charla muy interesante de Enrique Pérez-Montero (@iaacsic.bsky.social) ayer en @www.unizar.es (en Teruel) sobre la sonificación de datos astronómicos.
Muchos datos que mostramos como imágenes son adaptaciones para entenderlos mejor, y también se pueden traducir a sonidos y ser útil para todos.
Muchos datos que mostramos como imágenes son adaptaciones para entenderlos mejor, y también se pueden traducir a sonidos y ser útil para todos.
January 16, 2025 at 11:31 AM
Charla muy interesante de Enrique Pérez-Montero (@iaacsic.bsky.social) ayer en @www.unizar.es (en Teruel) sobre la sonificación de datos astronómicos.
Muchos datos que mostramos como imágenes son adaptaciones para entenderlos mejor, y también se pueden traducir a sonidos y ser útil para todos.
Muchos datos que mostramos como imágenes son adaptaciones para entenderlos mejor, y también se pueden traducir a sonidos y ser útil para todos.
3. The spectra reveal also emission lines of sulphur, nitrogen, and hydrogen across the nebula. Their velocities and fluxes are similar throughout the object.
This consistency is more typical of smaller nebulae nearby, rather than very distant and large ones.
🔭
This consistency is more typical of smaller nebulae nearby, rather than very distant and large ones.
🔭
December 12, 2024 at 5:06 PM
3. The spectra reveal also emission lines of sulphur, nitrogen, and hydrogen across the nebula. Their velocities and fluxes are similar throughout the object.
This consistency is more typical of smaller nebulae nearby, rather than very distant and large ones.
🔭
This consistency is more typical of smaller nebulae nearby, rather than very distant and large ones.
🔭
2. In the images we obtained with the JAST80 telescope🔭 at the OAJ in Teruel (Spain), we see emission from less ionized oxygen ([OII]), but not in the exact same position as [OIII]!
This is something seen in other nebulae… but only if they are close to us, not if they are as far as M31!
This is something seen in other nebulae… but only if they are close to us, not if they are as far as M31!
![Image from Lumbreras-Calle et al. 2024 https://arxiv.org/abs/2412.08327. It shows, in the background the [OIII] (in blue) and Halpha (in red) emission from the nebula near M31 discovered by Strottner, Dreschler, and Sainty. In the foreground, in blue/red contours, it shows the [OII]/Halpha emission measured with the JAST80 telescope from @CEFCA_OAJ. There is a clear separation between the [OII] and [OIII] emission.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:2pkpjtru5xppw6znquqtjfgg/bafkreigxytmx22r2fec2p6p3rh6kkryryhf26cmnvw6j6qdqlcmrg4jc5y@jpeg)
December 12, 2024 at 5:06 PM
2. In the images we obtained with the JAST80 telescope🔭 at the OAJ in Teruel (Spain), we see emission from less ionized oxygen ([OII]), but not in the exact same position as [OIII]!
This is something seen in other nebulae… but only if they are close to us, not if they are as far as M31!
This is something seen in other nebulae… but only if they are close to us, not if they are as far as M31!
1. The [OIII] we detect in the spectra shows the velocity of the nebula is similar to other objects in our Milky Way, but it differs a lot from M31's velocity.
This suggests it's a regular nebula nearby, not a distant giant one. A bit like a forced perspective trick!
🔭
This suggests it's a regular nebula nearby, not a distant giant one. A bit like a forced perspective trick!
🔭
December 12, 2024 at 5:06 PM
1. The [OIII] we detect in the spectra shows the velocity of the nebula is similar to other objects in our Milky Way, but it differs a lot from M31's velocity.
This suggests it's a regular nebula nearby, not a distant giant one. A bit like a forced perspective trick!
🔭
This suggests it's a regular nebula nearby, not a distant giant one. A bit like a forced perspective trick!
🔭
Remember the mysterious oxygen nebula discovered near the Andromeda galaxy #M31?
Today we try to decipher it! It's ✨Paper Day✨
arxiv.org/abs/2412.08327
With spectra from GTC (the largest 🔭) and OAJ large narrowband images we find the nebula is actually not related to M31!
But how?👇
#Astrophysics
Today we try to decipher it! It's ✨Paper Day✨
arxiv.org/abs/2412.08327
With spectra from GTC (the largest 🔭) and OAJ large narrowband images we find the nebula is actually not related to M31!
But how?👇
#Astrophysics
December 12, 2024 at 5:06 PM
Remember the mysterious oxygen nebula discovered near the Andromeda galaxy #M31?
Today we try to decipher it! It's ✨Paper Day✨
arxiv.org/abs/2412.08327
With spectra from GTC (the largest 🔭) and OAJ large narrowband images we find the nebula is actually not related to M31!
But how?👇
#Astrophysics
Today we try to decipher it! It's ✨Paper Day✨
arxiv.org/abs/2412.08327
With spectra from GTC (the largest 🔭) and OAJ large narrowband images we find the nebula is actually not related to M31!
But how?👇
#Astrophysics
This is just the beginning, we are releasing 17 square degrees of the sky, but we will reach 8000.
If you are interested, the data is accessible here: www.j-pas.org/datareleases... You can find the catalogs, very accurate photometric redshifts, reduced images, ADQL query server, sky viewer 🔭...
If you are interested, the data is accessible here: www.j-pas.org/datareleases... You can find the catalogs, very accurate photometric redshifts, reduced images, ADQL query server, sky viewer 🔭...
November 21, 2024 at 8:34 PM
This is just the beginning, we are releasing 17 square degrees of the sky, but we will reach 8000.
If you are interested, the data is accessible here: www.j-pas.org/datareleases... You can find the catalogs, very accurate photometric redshifts, reduced images, ADQL query server, sky viewer 🔭...
If you are interested, the data is accessible here: www.j-pas.org/datareleases... You can find the catalogs, very accurate photometric redshifts, reduced images, ADQL query server, sky viewer 🔭...
The most detailed imaging survey of the Universe is available now! 🔭
J-PAS has presented its first public data release. It has 800 000 objects observed with 54 narrowband filters!
J-PAS has presented its first public data release. It has 800 000 objects observed with 54 narrowband filters!
November 21, 2024 at 8:34 PM
The most detailed imaging survey of the Universe is available now! 🔭
J-PAS has presented its first public data release. It has 800 000 objects observed with 54 narrowband filters!
J-PAS has presented its first public data release. It has 800 000 objects observed with 54 narrowband filters!
Despite @darksapiens.bsky.social best efforts to shake me up, I calmly gave a talk at the J-PAS annual conference... until the two minute warning came and I panicked mid-sentence "... the emission line H-aaAAAAAAAlpha!"
November 19, 2024 at 11:12 AM
Despite @darksapiens.bsky.social best efforts to shake me up, I calmly gave a talk at the J-PAS annual conference... until the two minute warning came and I panicked mid-sentence "... the emission line H-aaAAAAAAAlpha!"
Back to work after the summer break, back to trying to finish some papers! 📝
Also back to preparing observing proposals. Hopefully getting IFU spectra on galaxies similar to this one: blue, extremely star-forming, and analogous to the very high redshift ones.
Also back to preparing observing proposals. Hopefully getting IFU spectra on galaxies similar to this one: blue, extremely star-forming, and analogous to the very high redshift ones.
September 4, 2024 at 6:58 PM
Back to work after the summer break, back to trying to finish some papers! 📝
Also back to preparing observing proposals. Hopefully getting IFU spectra on galaxies similar to this one: blue, extremely star-forming, and analogous to the very high redshift ones.
Also back to preparing observing proposals. Hopefully getting IFU spectra on galaxies similar to this one: blue, extremely star-forming, and analogous to the very high redshift ones.
Hi! I am starting in BlueSky taliking about another beginning:
J-PAS, the most detailed imaging survey ever has just started, observing the sky from Teruel, Spain.
With 56 filters imaging thousands of squared degrees, we will open huge new window into the Universe!
www.cefca.es/news/show/252
J-PAS, the most detailed imaging survey ever has just started, observing the sky from Teruel, Spain.
With 56 filters imaging thousands of squared degrees, we will open huge new window into the Universe!
www.cefca.es/news/show/252
October 19, 2023 at 7:16 PM
Hi! I am starting in BlueSky taliking about another beginning:
J-PAS, the most detailed imaging survey ever has just started, observing the sky from Teruel, Spain.
With 56 filters imaging thousands of squared degrees, we will open huge new window into the Universe!
www.cefca.es/news/show/252
J-PAS, the most detailed imaging survey ever has just started, observing the sky from Teruel, Spain.
With 56 filters imaging thousands of squared degrees, we will open huge new window into the Universe!
www.cefca.es/news/show/252