Congratulations to Alejandro Benítez-Llambay + student/team for this interesting discovery. Also happy to report that my most recent ApJ paper is the first to cite this work. hashtag#LatinAmericanExcellence lnkd.in/g-xJ7iYz

It’s paper day. We examine MW-scale satellite quenched fractions along simulations and observations (led by F. Mercado). Enjoy! 🌀 🛰️ arxiv.org/abs/2512.06071

Our paper on galaxy ignition in the post-reionization universe has now been accepted for publication (ApJ) ⚫️🧨🌀https://arxiv.org/abs/2511.03785

I wrote a manuscript on galaxy ignition in the post-reionization universe. A bittersweet milestone. This is my 70th paper and I’ve reached 4000 citations. But it’s also four months without my beloved father, to whom I dedicate this work. arxiv.org/abs/2511.03785 ♥️

I wrote a manuscript on galaxy ignition in the post-reionization universe. A bittersweet milestone. This is my 70th paper and I’ve reached 4000 citations. But it’s also four months without my beloved father, to whom I dedicate this work. arxiv.org/abs/2511.03785 ♥️

Our paper on the emergence of galactic discs has now been accepted for publication (MNRAS). 🔥 📦 🍊 🌀 arxiv.org/abs/2508.00991

Congratulations to David Olloqui Cortés on his first conference talk! 🇲🇽🇲🇽🇲🇽

A pleasure to co-lead a discussion with Dušan Kereš on galaxy formation and cosmic rays at this year’s Galfresca conference! 🌌 🔥

Our paper on resolved scaling relations in IllustrisTNG has now been accepted for publication (ApJ). arxiv.org/abs/2501.18687

It’s paper day. We find that the emergence of disk galaxies is connected to the bursty-to-steady star formation transition and the deepening of the gravitational potential well. 🌌 🔥 📦 arxiv.org/abs/2508.00991

It’s LSST/Rubin-relevant paper day. We investigate how not being able to detect faint stellar halos biases our understanding of ultrafaint galaxies, thus limiting their applicability to constrain galaxy formation and dark matter physics. 🌌 🔥https://arxiv.org/abs/2506.15785

It’s paper day. We compare the kinematic-age structure of FIRE-2 galaxies to observations, agreeing with LG + PHANGs, but not the MW (a dynamically cold outlier). 🌀 🌌 🔥 arxiv.org/abs/2506.11840

It’s paper day. We use IllustrisTNG to investigate resolved scaling relationship. See also our awesome spaxel leaky box analytics model! 🌌 💜https://arxiv.org/abs/2501.18687

Congratulations to our beloved children, Camila and Mateo, for graduating from university and high school. And to my beloved Viri for raising such kind and amazing young adults. We are proud of you and we love you! 👏🏽🎓♥️

It’s paper day. We find that many Milky Way analogs experienced a pickle shaped transient period throughout their formation history! 🌀 🥒 🔥 arxiv.org/abs/2506.08508

Huge thanks to NACA, the Neighborhood Assistance Corporation of America, for helping us make homeownership possible, and for fighting against racial injustice and housing discrimination in America for decades. Thank you! ♥️🖤 www.naca.com

We bought a house! 🏡 This is for our family and our ancestors! After a long history of discrimination, redlining, segregation, mass deportations, mob violence and subprime shark practices against our people, we are here today! ¡Esta es para mi gente! Homeownership is economic justice! 🏡✊🏽♥️

It’s paper day! Check out our latest paper on galactic shapes in FIREbox. Tip of the hat to Courtney Klein for leading this effort! 🔥 📦 🌌 arxiv.org/abs/2503.05612

It’s paper day! Our paper on galactic sizes has now been accepted for publication (ApJ). Tip of the hat to Francisco Mercado for leading this effort! arxiv.org/abs/2501.04084 @astronomerc.bsky.social

where I will be a panelist along with artist Marcus Zúñiga and others, as part of his exhibition From the Ground Up: Nurturing Diversity in Hostile Environments. I hope many of you are able to attend! 🖼️ 🌌 www.armoryarts.org/schedule/202...

It’s paper day! We explore resolved scaling relations with IllustrisTNG. What a weird time to be an American scientist… arxiv.org/abs/2501.18687

Thank you all for your kind birthday wishes! The saga continues… ♥️🎂💪🏾🥂

It’s paper day. We find that galactic sizes are driven by a complex interplay between virial mass and environment. arxiv.org/abs/2501.04084

In the blink of an eye, Francisco more than doubled the size of our research group. As a postdoc, he has really exceeded all expectations! 🌌 🔥

A pleasure to speak at USC! 🔥🌃

Our paper explaining elevated UV luminosity density in JWST with FIREbox has now been accepted for publication (MNRAS). 🌌 🔥 📦 arxiv.org/abs/2407.02674

Our paper on the role of galaxy interactions in triggering starbursts at the Milky Way scale has now been accepted for publication (ApJ). 🌌 🔥 arxiv.org/abs/2411.10373

A pleasure to facilitate a faculty workshop on teaching and mentoring at SBCC. Inspiring yet harrowing, given the current and forthcoming political maelstrom. 🦉🏝️♥️

Congratulations to Francisco for his first invited conference talk! 👏🏽👏🏽👏🏽

Voting for those who can’t. 💙🇺🇸

Public talk before the Pomona Valley Amateur Astronomers club. Thank you for inviting me! 🔭 🌌

This thread! 🧵 Bonus: you get to hang out with me! ☺️

An honour to organise this year’s GalFRESCA conference. Huge thanks to Carnegie Observatories for all your support! 🌌🌌♥️

Congratulations to my postdoc, Dr. Francisco Mercado, and his students, Benjamin Hanf and Brian Giraud Calderon, for their fantastic conference presentations! 🌌♥️

At Carnegie with James, our academic “son” Francisco, and our academic “grandchildren” Ben and Brian - at the same place where Einstein and Hubble took a photo together a century ago. 🔭 🌌♥️

A pleasure to organize this years GalFRESCA conference at Carnegie Observatories. Kudos to the most amazing SOC in the universe: Nondh Panithanpaisal, Sten Delos, Natalie Nicole Sanchez, Stacy Kim, Sachi Weerasooriya and Francisco Mercado! 🌌♥️🎊 galfresca2024.wixsite.com/galfresca24

I wrote a few thoughts on teaching, mentoring and art on Astrobites. astrobites.org/2024/09/14/a...

Highly recommend two exhibits by Marcus Zúñiga, at Benton (Claremont) and the Armory (Pasadena) at the intersection of art and astronomy! 🌙 🌌

Congratulations to Francisco for winning this grant, and for surviving research.gov (formerly known as fastlane)! Ps. If you have a faculty line, do yourselves a favour and recruit him! 🌌 www.pomona.edu/news/2024/09...

Congratulations to all CASSI interns for their final presentations, especially Pomona students Nhi Doan and Isabelle Winnick! 🌌

Today marks five years since the passing of my student and beloved friend, José Flores Velázquez. If you’re able, please donate to his scholarship fund. Thank you! 🙏🏽🫶🏽https://ps.uci.edu/jose-flores-velazquez-endowment-astrophysics

A pleasure to speak at the IAU All-inclusive AGN session in South Africa! 🇿🇦 🌌

Stargazing, a concert, and public astronomy talks on top of a mountain! An honour and a pleasure to speak at Lick Observatory! 🏔️ 🔭 🌌

A pleasure to speak at NASA’s Science Briefing on Astronomers Bridging Culture, Traditions, and Research. 🌌 universe-of-learning.org/contents/eve...

Our paper on AGN feedback and cosmic rays has now been accepted for publication (ApJ) 📝 🌌 🔥 arxiv.org/abs/2310.16086

An absolute pleasure to visit my friends at the University of Surrey! 🌌🔥

It’s paper day. Our new FIREbox-HR simulation explains elevated UV luminosity density in JWST. With FIRE physics, we predict a non-evolving, weakly-mass dependent star formation efficiency, alleviating the need to invoke weird baryonic physics or non-LCDM cosmology. 🔥 📦 🌌 arxiv.org/abs/2407.02674

Carnegie’s undergraduate summer interns (CASSI) chose me to be their first iLunch speaker. What an honour! 🥹♥️

Our paper on galactic sizes in FIRE has now been accepted for publication (MNRAS). Way to go Courtney Klein! 🌌 🔥 arxiv.org/abs/2404.02373

A pleasure to speak about baryons and feedback to a room full of dark matter aficionados! Thank you for inviting me! 🌌🖤