Germán Chaparro
@saintgermain.bsky.social
Astronomy professor at Universidad de Antioquia, Medellín 🇨🇴, MSc Sterrewacht Leiden, PhD Kapteyn - Groningen 🇳🇱. Research: Protoplanetary disks, planet formation, radio astronomy instrumentation on the side.
Using a Gaussian mixture model in our reduced (embedded) parameter space, we identified these clusters. Principal component analysis (PCA) further supported an evolutionary pathway across the groups.
February 10, 2025 at 11:35 AM
Using a Gaussian mixture model in our reduced (embedded) parameter space, we identified these clusters. Principal component analysis (PCA) further supported an evolutionary pathway across the groups.
Our new analysis revealed three distinct MYSO populations:
(i) Cold, COM-poor sources
(ii) Warm, medium-COM-abundance sources
(iii) Hot, COM-rich sources
These groups hint at different evolutionary stages in massive star formation.
(i) Cold, COM-poor sources
(ii) Warm, medium-COM-abundance sources
(iii) Hot, COM-rich sources
These groups hint at different evolutionary stages in massive star formation.
February 10, 2025 at 11:35 AM
Our new analysis revealed three distinct MYSO populations:
(i) Cold, COM-poor sources
(ii) Warm, medium-COM-abundance sources
(iii) Hot, COM-rich sources
These groups hint at different evolutionary stages in massive star formation.
(i) Cold, COM-poor sources
(ii) Warm, medium-COM-abundance sources
(iii) Hot, COM-rich sources
These groups hint at different evolutionary stages in massive star formation.
Their spectral line information showed that not all MYSOs share the same physico-chemical states. This points to plausible evolutionary pathways for MYSOs
February 10, 2025 at 11:35 AM
Their spectral line information showed that not all MYSOs share the same physico-chemical states. This points to plausible evolutionary pathways for MYSOs
They found several amazing complex organic molecules (COMs) like methanol, methyl acetylene, and methyl cyanide in these massive star forming regions
February 10, 2025 at 11:35 AM
They found several amazing complex organic molecules (COMs) like methanol, methyl acetylene, and methyl cyanide in these massive star forming regions
Using ALMA Band 6 data, we analyzed mm-wave spectra from 41 massive young stellar objects (MYSOs) sourced from diverse catalogs (N. Frimpong's PhD work).
February 10, 2025 at 11:35 AM
Using ALMA Band 6 data, we analyzed mm-wave spectra from 41 massive young stellar objects (MYSOs) sourced from diverse catalogs (N. Frimpong's PhD work).
We used dimensionality reduction techniques like Locally Linear Embedding (LLE) and Principal Component Analysis (PCA) to uncover hidden patterns in the spectra. This means we can get key physicochemical info without the manual hassle.
February 10, 2025 at 11:35 AM
We used dimensionality reduction techniques like Locally Linear Embedding (LLE) and Principal Component Analysis (PCA) to uncover hidden patterns in the spectra. This means we can get key physicochemical info without the manual hassle.
Traditionally, we manually extract spectral lines and fit them to build these diagrams. This is a process that’s usually time-consuming since each spectral line needs its own separate profile fit
February 10, 2025 at 11:35 AM
Traditionally, we manually extract spectral lines and fit them to build these diagrams. This is a process that’s usually time-consuming since each spectral line needs its own separate profile fit
Quick refresher: a rotational diagram plots the log-column density (divided by statistical weight) against the energy of a molecule’s rotational levels. This lets us infer the excitation temp. & column density of a chemical species. This is very helpful in star formation studies.
February 10, 2025 at 11:35 AM
Quick refresher: a rotational diagram plots the log-column density (divided by statistical weight) against the energy of a molecule’s rotational levels. This lets us infer the excitation temp. & column density of a chemical species. This is very helpful in star formation studies.
🚀 New Paper Alert! 🚀
We're excited to share our latest work at UdeA, recently published in Astronomy & Astrophysics. We show how machine learning can cut down the manual workload in rotational diagram analysis, directly decoding mm-wave spectra! 🧵 #Astronomy
We're excited to share our latest work at UdeA, recently published in Astronomy & Astrophysics. We show how machine learning can cut down the manual workload in rotational diagram analysis, directly decoding mm-wave spectra! 🧵 #Astronomy
February 10, 2025 at 11:35 AM
🚀 New Paper Alert! 🚀
We're excited to share our latest work at UdeA, recently published in Astronomy & Astrophysics. We show how machine learning can cut down the manual workload in rotational diagram analysis, directly decoding mm-wave spectra! 🧵 #Astronomy
We're excited to share our latest work at UdeA, recently published in Astronomy & Astrophysics. We show how machine learning can cut down the manual workload in rotational diagram analysis, directly decoding mm-wave spectra! 🧵 #Astronomy
Voy a ser parte de la 11 expedicion antartica colombiana. Estare actualizando por aqui o en www.tiktok.com/@germanchapa...
February 1, 2025 at 6:06 PM
Voy a ser parte de la 11 expedicion antartica colombiana. Estare actualizando por aqui o en www.tiktok.com/@germanchapa...
NASA's Commitment to Diversity and Inclusion section has been removed from the Human Exploration Research Opportunities (HERO) program funding notice
January 25, 2025 at 3:53 PM
NASA's Commitment to Diversity and Inclusion section has been removed from the Human Exploration Research Opportunities (HERO) program funding notice
I'll be flying out to Antarctica in two weeks to do some radio astronomy EoR sciencey stuff. Here's my final 3-to-4-layer outfit test before packing.
January 22, 2025 at 2:14 PM
I'll be flying out to Antarctica in two weeks to do some radio astronomy EoR sciencey stuff. Here's my final 3-to-4-layer outfit test before packing.
Congratulations to my former MPhil student Yenifer Angarita (now postdoc at Chalmers) and co-authors on this wonderful Boxing day paper acceptance! #paperday #itsthemostwonderfultimeoftheyear
December 26, 2024 at 7:31 PM
Congratulations to my former MPhil student Yenifer Angarita (now postdoc at Chalmers) and co-authors on this wonderful Boxing day paper acceptance! #paperday #itsthemostwonderfultimeoftheyear
Reductio ad etymologia
December 16, 2024 at 3:58 AM
Reductio ad etymologia
Tres estudiantes del pregrado de Astronomia-UdeA fueron premiados por sus pósteres en la séptima edición del Congreso Colombiano de Astronomía y Astrofísica, celebrado en Bucaramanga tinyurl.com/29fytn3s
December 12, 2024 at 5:13 PM
Tres estudiantes del pregrado de Astronomia-UdeA fueron premiados por sus pósteres en la séptima edición del Congreso Colombiano de Astronomía y Astrofísica, celebrado en Bucaramanga tinyurl.com/29fytn3s
Lecturas de la semana
December 5, 2024 at 3:15 PM
Lecturas de la semana
hold it pardner
December 4, 2024 at 9:49 PM
hold it pardner
Here's our official 2024 AstroTwinCoLO school picture. A big thank you to Dr. Divya Rana for an exciting week of general relativity and gravitational lensing. AstroTwinCoLO is a yearly intermediate-advanced astronomy school organized by Universidad de Antioquia 🇨🇴 and Sterrewacht Leiden 🇳🇱
December 3, 2024 at 8:24 PM
Here's our official 2024 AstroTwinCoLO school picture. A big thank you to Dr. Divya Rana for an exciting week of general relativity and gravitational lensing. AstroTwinCoLO is a yearly intermediate-advanced astronomy school organized by Universidad de Antioquia 🇨🇴 and Sterrewacht Leiden 🇳🇱
Weekend reading
December 1, 2024 at 11:11 PM
Weekend reading
Llevaba un buen rato detrás de este cómic clásico, It’s a Good Life If You Don’t Weaken de Seth
November 26, 2024 at 11:46 PM
Llevaba un buen rato detrás de este cómic clásico, It’s a Good Life If You Don’t Weaken de Seth
Con 16 estudiantes del pregrado de Astronomia UdeA, 5 estudiantes de posgrado, 14 posters, 12 charlas contribuidas, ¡3 premios a mejor poster!, 2 plenarias, esta fue nuestra participación en el Congreso Colombiano de Astronomía 2024 en la UIS
November 23, 2024 at 10:32 PM
Con 16 estudiantes del pregrado de Astronomia UdeA, 5 estudiantes de posgrado, 14 posters, 12 charlas contribuidas, ¡3 premios a mejor poster!, 2 plenarias, esta fue nuestra participación en el Congreso Colombiano de Astronomía 2024 en la UIS
Rumbo al Congreso Colombiano de Astronomía en Bucaramanga
November 18, 2024 at 2:12 PM
Rumbo al Congreso Colombiano de Astronomía en Bucaramanga