Dr. Grant Tremblay
Astrophysicist
Center for Astrophysics | Harvard & Smithsonian
About Grant
I am a Federal Astrophysicist and External Relations Lead at the Smithsonian Astrophysical Observatory (SAO), which is part of the the Center for Astrophysics | Harvard & Smithsonian. Previously, I was the Deputy P.I. and Project Scientist for the Chandra X-ray Observatory High Resolution Camera at SAO. I was also a NASA Einstein Fellow at Yale University, a Fellow in the Directorate for Science at the European Southern Observatory (ESO) near Munich, and an Astronomer at ESO's Very Large Telescope in Chile. Prior to that, I was at the Rochester Institute of Technology, the Space Telescope Science Institute, the Johns Hopkins University, and the University of Rochester. A short bio can be found here, and you can download my full CV here.
I work on star formation and the dynamics of multiphase gas amid energetic feedback from active galaxies, whose central engines are powered by accreting supermassive black holes.
As of August 2024, I am also Senior Vice President of the American Astronomical Society, Vice Chair of the NASA Astrophysics Advisory Committee, and a Lecturer in Harvard’s Department of Astronomy.
Feel free to email me at gtremblay @ cfa.harvard.edu
Support for my work is provided by the Smithsonian Institution, as well as several grants from the National Aeronautics and Space Administration (NASA), including Einstein Postdoctoral Fellowship Award Number PF-150128. I have also been funded by NASA Grants stemming from the Hubble Space Telescope, Chandra X-ray Observatory, and Spitzer Space Telescope missions. I am also grateful for partial support from the European Community's Seventh Framework Programme. Views expressed here are entirely my own, and not those of NASA, the Smithsonian, Harvard, Yale, or ESO.
Research Group
I am lucky to work with a phenomenal group of Postdoctoral Fellows and Ph.D. Students. I’ll use this space to advertise their great work, and I encourage you to check out their websites.
From left to right: Dr. Rebecca Nevin, Dr. Bryan Terrazas, Osase Omoruyi, Aimee Schechter
Bryan’s recent paper on sSFR, stellar mass, and BH mass in IllustrisTNG
Becky’s recent paper on IDing recent galaxy mergers with LDA
Books for the General public
Light from the Void
Twenty Years of Discovery with
NASA’s Chandra X-ray Observatory
NOW AVAILABLE EVERYWHERE
Amazon | Smithsonian Books | Barnes & Noble
Take a journey through the cosmos with Light from the Void, a stunning collection of photographs from the Chandra X-Ray Observatory's two decades of operation. The book showcases rarely-seen celestial phenomena such as black holes, planetary nebulae, galaxy clusters, gravitational waves, stellar birth and death, and more. Accompanying these images of incredible natural phenomena are captions explaining how they occur.
What do Black Holes Eat for Dinner?
Amazon | Tumblehome | Bookshop
Written with award-winning Children’s author Katie Coppens.
Space facts from an astrophysicist, brought down to earth by a middle school teacher—these are answers to kids' real, wacky, smart questions. Light, space, stars, galaxies, planets, and more, all explained with accuracy and humor, and accompanied by images from the Chandra X-ray Observatory.
Ethics note: As a Smithsonian Scientist, I keep no royalties from books that I write. 100% of my personal book proceeds are donated to the following fabulous charities:
Black Girls Code
Million Girls Moonshot
National Urban League
Press Releases
ALMA & MUSE Detect Galactic Fountain
Headlines based on Tremblay et al. 2018
ESO: ALMA and MUSE Detect Galactic Fountain
NASA/Chandra: Cosmic Fountain Powered by Giant Black Hole
Yale: Finding Answers at a Galactic Fountain
Bad Astronomer / SyFy Wire: A Distant Black Hole powers a Colossal Galactic Fountain
Space.com: Monster Black Hole Fountain Spotted
Discovery of a Unique Galaxy in a Strong Lensing Galaxy Cluster
Headlines based on Tremblay et al. 2014
NBC News: An Intergalactic String of Pearls
Forbes: The Power of Einstein's Gravity
NASA: A Bridge of Young Stars between Galaxies
ESA: Merging Galaxies & Droplets of Stars
Astronomy Picture of the Day: 2014 July 15
Astrobites summary: Star Formation on a String
The Huffington Post: New Light on Star Birth
Our paper was the topic of a Hubblecast and a "Hubble Hangout"
Evidence for Galaxy-Scale Fountains powered by Black Holes
Headlines based on Tremblay et al. 2015
NASA: Hubble Finds Black Hole Fountains
HubbleSite: Galaxy Star Birth and Black Holes
Yale News: Sorting through Thickets of Stars
IFL Science: Black Holes Act Like Thermostats
The Daily Mail: Black Hole Fountain gives Birth
Russia Today: How a Black Hole Regulates Galaxies
Gravitational Wave Kicks Monster Black Hole Out of Galactic Core
This image, taken by NASA's Hubble Space Telescope, reveals an unusual sight: a runaway quasar fleeing from its galaxy's central hub. A quasar is the visible, energetic signature of a black hole. Black holes cannot be observed directly, but they are the energy source at the heart of quasars — intense, compact gushers of radiation that can outshine an entire galaxy.
Credits: NASA, ESA, and M. Chiaberge (STScI and JHU)
A release from our High Redshift 3C HST Survey
NASA: Gravitational Wave Kicks Monster Black Hole
The Washington Post: Pushing a Black Hole
Science: Are Gravitational Waves Kicking this Black Hole out of a Galaxy?
Starving Black Hole Returns Brilliant Galaxy to the Shadows
Our first press release from the Close AGN Reference Survey (CARS)
In 1984, Markarian 1018 became the first-known "changing look" quasar, converting from a faint, narrow-lined Seyfert 2 to a bright Seyfert 1. The Close AGN Reference Survey (CARS) has now discovered that the galaxy has recently reverted back to a Seyfert 2, retreating to the shadows once more. It is the first such object to go "there and back again".
Headlines based on our new CARS papers (one & two):
ABC: Starving Black Hole at heart of Mysterious Galaxy
CXC: Starvation Diet Dims Galaxy
ESO: Starving Black Hole returns Galaxy to the Shadows
Yale: Ch-ch-ch-changes in a distant Quasar
Forbes: When Black Holes stop Eating, Galaxies Fade
U. Sydney: A Galaxy Returns to the Shadows
AIP: Starving Black Hole returns Galaxy to the Shadows
The Australian: Galaxy torn apart by Rival Black Holes
Cosmos: Starving Black Hole sends Galaxy into Shadow
Science Alert: Turf war in a Galaxy
Education & Outreach
The Banneker Institute
I am a research adviser and course instructor for Harvard's fabulous Banneker Institute, which prepares undergraduate students of color for graduate programs in astronomy by emphasizing research, building community, and encouraging debate and political action through social justice education.
Astronomy On Tap
Recently, I organized the New Haven Chapter of Astronomy on Tap, and now work on the AoT Boston organizing team. Join us for our awesome forthcoming events!
Documentary & Film
Check out the trailer for our forthcoming NASA-sponsored celebration of Chandra’s Two Decades of Discovery.
I am a cast member and science advisor for several documentary series, including Space's Deepest Secrets and How the Universe Works for the Discovery and Science Channels.
Public Events
I recently moderated a Q&A with David Tennant (Dr. Who) before an audience of 5,000 people at Awesome Con in Washington, DC.
"David Tennant, a man who's pretended to visit the farthest future, will be joined on stage by Dr. Grant Tremblay and Dr. Matthew Shindell, experts who are actually exploring the outer reaches of our galaxy. Together they'll geek out about Dr. Who, what's really out there among the stars, and take questions from fans on life, the Universe, and everything.
Informal Writing
Some thoughts on science, life, and (astro)policy.
These random thoughts may be boring or wrong (sometimes both). They do not, however, reflect the opinion of NASA, the Smithsonian Astrophysical Observatory, Harvard, Yale, ESO, or anyone but myself.
Featured
Check out CARS, our stunning new MUSE survey.
I am the head of the Lynx Science Study Office. Learn more about our mission to reveal the unseen.
I am a team member on The Astropy Project, a Community Python Library for Astronomy.
Selected Publications
I infrequently update this! A complete publication list can be found in my CV, at ORCiD, or on the ADS.
My PhD thesis can be found here (PDF).
Ubiquitous cold and massive filaments in cool core clusters
V. Olivares, P. Salomé, F. Combes, S. Hamer, M. D. Lehnert, F. Polles, R. S. Beckmann, Y. Dubois, M. Donahue, A. Edge, A. C. Fabian, B. R. McNamara, T. Rose, H. R. Russell, G. R. Tremblay, A. Vantyghem, R. E. A. Canning, G. Ferland, B. Godard, M. Hogan, S. Peirani, & G. Forets
Olivares et al. 2019, A&A, submitted
A Galaxy-Scale Fountain of Cold Molecular Gas Pumped by a Black Hole
G. R. Tremblay, F. Combes, J. B. Raymond Oonk, H. R. Russell, M. A. McDonald, M. Gaspari, B. Husemann, P. E. J. Nulsen, B. R. McNamara, S. L. Hamer, C. P. O'Dea, S. A. Baum, T. A. Davis, M. Donahue, G. M. Voit, A. C. Edge, E. L. Blanton, M. N. Bremer, E. Bulbul, T. E. Clarke, L. P. David, L. O. V. Edwards, D. A. Eggerman, A. C. Fabian, W. R. Forman, C. Jones, N. Kerman, R. P. Kraft, Y. Li, M. C. Powell, S. W. Randall, P. Salomé, A. Simionescu, Y. Su, C. Megan Urry, A. N. Vantyghem, B. J. Wilkes & J. A ZuHone
Tremblay et al. 2018, ApJ, 865, 13 (arXiv)
PKSB1740-517: An ALMA view of the cold gas feeding a distant interacting young radio galaxy
J. Allison, E. K. Mahony, V. A. Moss, E. M. Sadler, M. T. Whiting, R. F. Allison, J. Bland-Hawthorn, B. H. C. Emonts, C. D. P. Lagos, R. Morganti, G. R. Tremblay, M. Zwaan, C. S. Anderson, J. D. Bunton, & M. A. Voronkov
Allison et al. 2018, MNRAS in press (arXiv)
The MURALES Survey. I. A dual AGN in the radio galaxy 3C 459?
B. Balmaverde, A. Capetti, G. Venturi, M. Chiaberge, R. Baldi, S. Baum, R. Gilli, P. Grandi, E. Meyer, G. K. Miley, C. P. O’Dea, W. B. Sparks, E. Torresi, & G. R. Tremblay
Balmaverde et al. 2018, A&A in press (arXiv)
The Close AGN Reference Survey (CARS): No evidence of galaxy-scale hot outflows in two nearby AGN
M. Powell, B. Husemann, G. R. Tremblay, M. Krumpe, T. Urrutia, S. A. Baum, G. Busch, F. Combes, S. M. Croom, T. A. Davis, A. Eckart, C. P. O'Dea, M. Pérez-Torres, J. Scharwächter, I. Smirnova-Pinchukova, & C. M. Urry
Powell et al. 2018, A&A in press (arXiv)
The recoiling black hole candidate 3C 186: spatially-resolved quasar feedback and further evidence of a blue-shifted broad line region
M. Chiaberge, G. R. Tremblay, A. Capetti, & C. Norman
Chiaberge et al. 2018, ApJ in press (arXiv)
Revisiting the Cooling Flow Problem in Galaxies, Groups, and Clusters of Galaxies
M. McDonald, M. Gaspari, B. R. McNamara, & G. R. Tremblay
McDonald et al. 2018, ApJ in press (arXiv)
The Astropy Project: Building an Inclusive, Open-Source Project and Status of the v2.0 Software
The Astropy Collaboration 2018, submitted to AAS Journals (arXiv | How to cite and acknowledge use of Astropy)
ALMA Observation of the Disruption of Molecular Gas in M87
A. Simionescu, G. R. Tremblay, N. Werner, R. E. A. Canning, S. W. Allen, & J. B. R. Oonk
Simionescu et al. 2018, MNRAS, 475, 30004 (arXiv)
Shaken Snow Globes: Kinematic Tracers of the Multiphase Condensation Cascade in Massive Galaxies, Groups, and Clusters
M. Gaspari, M. A. McDonald, S. L. Hamer, F. Brighenti, P. Temi, M. Gendron-Marsolais, J. Hlavacek-Larrondo, A. C. Edge, N. Werner, P. Tozzi, M. Sun, J. M. Stone, G. R. Tremblay, M. T. Hogan, D. Eckert, S. Ettori, H. Yu, V. Biffi, & S. Planelles
Gaspari et al. 2018, ApJ, 854, 167 (arXiv)
The Effects of Ram Pressure Stripping on the Cold Clouds in the Centers of Galaxy Clusters
Y. Li, M. Ruszkowski, & G. R. Tremblay
Li et al. 2018, ApJ, 854, 91 (arXiv)
Testing for Shock-Heated X-ray Gas around Compact Steep Spectrum Radio Galaxies
C. P. O'Dea, D. M. Worrall, G. R. Tremblay, T. E. Clarke, B. Rothberg, S. A. Baum, K. P. Christiansen, C. A. Mullarkey, J. Noel-Storr, & R. Mittal
O'Dea et al. 2017, ApJ, 851, 87 (arXiv)
The Close AGN Reference Survey (CARS): Mrk 1018 halts dimming and now experiences strong short-term variability
M. Krumpe, B. Husemann, G. R. Tremblay, T. Urrutia, M. Powell, T. A. Davis, J. Scharwaechter, J. Dexter, G. Busch, F. Combes, S. M. Croom, A. Eckart, R. E. McElroy, M. Perez-Torres, & G. Leung
Krumpe et al. 2017, A&A, 607, 9 (arXiv)
The Close AGN Reference Survey (CARS)
B. Husemann, G. R. Tremblay, T. Davis, G. Busch, R. McElroy, J. Neumann, T. Urrutia, M. Krumpe, J. Scharwaechter, M. Powell, M. Perez-Torrez and the CARS Team
Husemann et al. 2017, The ESO Messenger, 169, 42 (ESO)
Close Entrainment of massive molecular gas flows by radio bubbles in the central galaxy of Abell 1795
H. R. Russell, B. R. McNamara, A. C. Fabian, P. E. J. Nulsen, F. Combes, A. C. Edge, M. T. Hogan, M. McDonald, P. Salome, G. R. Trembay, & A. N. Vantyghem
Russell et al. 2017, MNRAS, 472, 4024 (arXiv)
The Puzzling Radio Loud QSO 3C 186: A Gravitational Wave Recoiling Black Hole in a Young Radio Source?
M. Chiaberge, J. C. Ely, E. T. Meyer, M. Georganopoulos, A. Marinucci, S. Bianchi, G. R. Tremblay, B. Hilbert, J. P. Kotyla, A. Capetti, S. A. Baum, F. D. Macchetto, G. Miley, C. P. O'Dea, E. S. Perlman, W. B. Sparks, & C. Norman
Chiaberge et al. 2017, A&A, 600, 57 (arXiv | Press Release | Science | Engadget | The Washington Post)
Cold, Clumpy Accretion onto an Active Supermassive Black Hole
G. R. Tremblay, J. B. Raymond Oonk, F. Combes, P. Salomé, C. P. O'Dea, S. A. Baum, G. M. Voit, M. Donahue, B. R. McNamara, T. A. Davis, M. A. McDonald, A. C. Edge, T. E. Clarke, R. Galvan-Madrid, M. N. Bremer, L. Edwards, A. C. Fabian, S. Hamer, Y. Li, A. Maury, H. R. Russell, A. C. Quillen, C. M. Urry, J. S. Sanders, & M. Wise
Tremblay et al. 2016, Nature, 534, 218-221 (Nature | arXiv | ADS | Code | Press Release | The Washington Post)
Why Astronomy programs are moving on from the Physics GRE
E. M. Levesque, R. Bezanzon, & G. R. Tremblay
An editorial in Physics Today, 2017
Molecular Gas along a Bright H-alpha Filament in 2A 0335+096 Revealed by ALMA
A. N. Vantyghem, B. R. McNamara, H. R. Russell, M. T. Hogan, A. C. Edge, P. E. J. Nulsen, A. C. Fabian, F. Combes, P. Salome, S. A. Baum, M. Donahue, R. A. Main, N. W. Murray, R. W. O'Connell, C. P. O'Dea, J. B. R. Oonk, I. J. Parrish, J. S. Sanders, & G. R. Tremblay
Vantyghem et al. 2016, ApJ in press (arXiv)
Star Formation in Intermediate Redshift 0.2 < z < 0.7 Brightest Cluster Galaxies
K. C. Cooke, C. P. O'Dea, S. A. Baum, G. R. Tremblay, I. G. Cox, & M. D. Gladders
Cooke et al. 2016, ApJ, 833, 224 (arXiv)
The Close AGN Reference Survey (CARS): Mrk 1018 Returns to the Shadows after 30 years as a Seyfert 1
R. E. McElroy, B. Husemann, T. A. Davis, V. N. Bennert, G. Busch, F. Combes, A. Eckart, M. Perez-Torres, M. Powell, J. Scharwächter, G. R. Tremblay, & T. Urrutia
McElroy et al. 2016, A&A, 593, L8 (arXiv)
The Close AGN Reference Survey (CARS): What is causing Mrk 1018's Return to the Shadows after 30 years?
B. Husemann, T. Urrutia, G. R. Tremblay, M. Krumpe, J. Dexter, G. Busch, F. Combes, S. M. Croom, T. A. Davis, A. Eckhart, R. E. McElroy, M. Perez-Torres, M. Powell, & J Scharwächter
Husemann et al. 2016, A&A, 593, L9 (arXiv)
Swift Observations of Unidentified Radio Sources in the Revised Third Cambridge Catalogue
A. Maselli, F. Massaro, G. Cusumano, V. La Parola, D. E. Harris, A. Paggi, E. Liuzzo, G. R. Tremblay, S. A. Baum, & C. P. O'Dea
Maselli et al. 2016, MNRAS, 460, 3829 (MNRAS)
Powerful Activity in the Bright Ages. I. A Visible/IR Survey of High Redshift 3C Radio Galaxies and Quasars
B. Hilbert, M. Chiaberge, J. P. Kotyla, G. R. Tremblay, C. Stanghellini, W. B. Sparks, S. A. Baum, A. Capetti, F. D. Macchetto, G. K. Miley, C. P. O'Dea, E. S. Perlman, & A. C. Quillen
Hilbert et al. 2016, ApJS, 225, 12 (arXiv)
The Environment of z >1 3CR Radio Galaxies and QSOs: From Proto-Clusters to Clusters of Galaxies?
J. P. Kotyla, M. Chiaberge, S. A. Baum, A. Capetti, B. Hilbert, F. D. Macchetto, G. K. Miley, C. P. O'Dea, E. S. Perlman, W. B. Sparks, & G. R. Tremblay
Kotyla et al. 2016, ApJ, 826, 46 (arXiv)
ALMA observations of cold molecular gas filaments trailing rising radio bubbles in PKS 0745-191
H. R. Russell, B. R. McNamara, A. C. Fabian, P. E. J. Nulsen, A. C. Edge, F. Combes, N. W. Murray, I. J. Parrish, P. Salome, J. S. Sanders, S. A. Baum, M. Donahue, R. A. Main, R. W. O'Connell, C. P. O'Dea, J. B. R. Oonk, G. R. Tremblay, A. N. Vantyghem, & G. M. Voit
Russell et al. 2016, MNRAS, 458, 3134 (arXiv)
Physics GRE Scores of Prize Postdoctoral Fellows in Astronomy
E. M. Levesque, R. Bezanson, & G. R. Tremblay
A special, unrefereed post as part of a recent AAS Presidential Statement (arXiv | AstroBetter | astrobites)
Far Ultraviolet Morphology of Star Forming Filaments in Cool Core Brightest Cluster Galaxies
G. R. Tremblay, C. P. O'Dea, S. A. Baum, R. Mittal, M. McDonald, F. Combes, Y. Li, B. McNamara, M. Bremer, T. Clarke, M. Donahue, A. Edge, A. Fabian, S. Hamer, M. Hogan, J. B. R. Oonk, A. C. Quillen, J. S. Sanders, P. Salome, & G. M. Voit
Tremblay et al. 2015, MNRAS, 451, 3768 (arXiv | NASA Press Release | Yale Press Release | IFL Science)
The outer filament of Centaurus A as seen by MUSE
F. Santoro, J. B. R. Oonk, R. Morganti, T. A. Oosterloo, & G. R. Tremblay
Santoro et al. 2015, A&A, 575, 4 (arXiv)
Feedback, scatter and structure in the core of the PKS 0745-191 Galaxy Cluster
J. S. Sanders, A. C. Fabian, J. Hlavacek-Larrondo, H. R. Russell, G. B. Taylor, F. Hofmann, G. R. Tremblay, & S. A. Walker
Sanders et al. 2014, MNRAS, 444, 1497 (arXiv)
A Thirty Kiloparsec Chain of "Beads on a String" Star Formation between two Merging Early Type Galaxies in the Core of a Strong-Lensing Galaxy Cluster
G. R. Tremblay, M. Gladders, S. A. Baum, C. P. O'Dea, M. Bayliss, K. Cooke, H. Dahle, T. Davis, M. Florian, J. Rigby, K. Sharon, & E. Soto
Tremblay et al. 2014, ApJL, 790, 26 (arXiv | astrobites | NASA Press Release | ESA Press Release | NBC News)
A Ten Billion Solar Mass Outflow of Molecular Gas Launched by Radio Bubbles in the Abell 1835 Brightest Cluster Galaxy
B. R. McNamara, H. R. Russell, P. E. J. Nulsen, A. C. Edge, N. W. Murray, R. A. Main, A. N. Vantyghem, F. Combes, A. C. Fabian, P. Salome, C. C. Kirkpatrick, S. A. Baum, J. N. Bregman, M. Donahue, E. Egami, S. Hamer, C. P. O'Dea, J. B. R. Oonk, G. R. Tremblay, & G. M. Voit
McNamara et al. 2014, ApJ, 785, 44 (arXiv | CfA Science Update)
Massive Molecular Gas Flows in the Abell 1664 Brightest Cluster Galaxy
H. R. Russell, B. R. McNamara, A. C. Edge, P. E. J. Nulsen, R. A. Main, A. N. Vantyghem, F. Combes, A. C. Fabian, N. Murray, P. Salome, R. J. Wilman, S. A. Baum, M. Donahue, C. P. O'Dea, J. B. R. Oonk, G. R. Tremblay, & G. M. Voit
Russell et al. 2013, ApJ, 784, 78 (arXiv)
Cold Gas Dynamics in Hydra A: Evidence for a Rotating Disk
S. L. Hamer, A. C. Edge, A. M. Swinbank, J. B. R. Oonk, R. Mittal, B. R. McNamara, H. R. Russell, M. Bremer, F. Combes, A. C. Fabian, N. P. H. Nesvadba, C. P. O'Dea, S. A. Baum, P. Salome, G. R. Tremblay, M. Donahue, G. J. Ferland, & C. L. Sarazin
Hamer et al. 2013, MNRAS, 437, 862 (arXiv)
Hubble Space Telescope Observations of Dusty Filaments in Hercules A: Evidence for Entrainment
C. P. O'Dea, S. A. Baum, G. R. Tremblay, P. Kharb, W. D. Cotton, and R. A. Perley
O'Dea et al. 2013, ApJ, 771, 38 (arXiv | NASA Press Release)
Residual Cooling and Persistent Star Formation amid AGN Feedback in Abell 2597
G. R. Tremblay, C. P. O'Dea, S. A. Baum, T. E. Clarke, C. L. Sarazin, J. N. Bregman, F. Combes, M. Donahue, A. C. Edge, A. C. Fabian, G. J. Ferland, B. R. McNamara, R. Mittal, J. B. R. Oonk, A. C. Quillen, H. R. Russell, J. S. Sanders, P. Salome, G. M. Voit, R. J. Wilman, and M. W. Wise
Tremblay et al. 2012a, MNRAS, 424, 1042 (arXiv)
Multiphase Signatures of AGN Feedback in Abell 2597
G. R. Tremblay, C. P. O'Dea, S. A. Baum, T. E. Clarke, C. L. Sarazin, J. N. Bregman, F. Combes, M. Donahue, A. C. Edge, A. C. Fabian, G. J. Ferland, B. R. McNamara, R. Mittal, J. B. R. Oonk, A. C. Quillen, H. R. Russell, J. S. Sanders, P. Salome, G. M. Voit, R. J. Wilman, and M. W. Wise
Tremblay et al. 2012b, MNRAS, 424, 1026 (arXiv)
Fueling the Central Engine of Radio Galaxies. II. The Footprints of AGN Feedback on the ISM of 3C 236
A. Labiano, S. Garcia-Burillo, F. Combes, A. Usero, R. Soria-Ruiz, G. R. Tremblay, R. Neri, A. Fuente, R. Morganti, T. Oosterloo
Labiano et al. 2012, A&A, 549, 58 (arXiv)
The extended soft X-ray emission in 3CR radio galaxies with z < 0.3
B. Balmaverde, A. Capetti, P. Grandi, E. Torresi, M. Chiaberge, J. Rodriguez Zaurin, G. R. Tremblay, D. J. Axon, S. A. Baum, G. Giovannini, P. Kharb, F. D. Macchetto, C. P. O'Dea, W. B. Sparks
Balmaverde et al. 2012, A&A, 545, 14 (arXiv)
Herschel Observations of Extended Atomic Gas in the Core of the Perseus Cluster
R. Mittal, J. B. R. Oonk. G. J. Ferland, A. C. Edge, C. P. O'Dea, S. A. Baum, J. T. Whelan, R. Johnstone, P. Salome, A. C. Fabian, G. R. Tremblay, M. Donahue, H. Russell
Mittal et al. 2012, MNRAS, 426, 2957 (arXiv)
Herschel Observations of the Centaurus Cluster - The Dynamics of Cold Gas in a Cool Core
R. Mittal, C. P. O'Dea, G. Ferland, J. B. R. Oonk, A. C. Edge, R. E. A. Canning, H. R. Russell, S. A. Baum, H. Boehringer, F. Combes, M. Donahue, A. C. Fabian, N. A. Hatch, A. Hoffer, R. Johnstone, B. R. McNamara, P. Salome, & G. R. Tremblay
Mittal et al. 2011, MNRAS, 418, 2386 (arXiv)
Episodic Star Formation Coupled to Reignition of Radio Activity in 3C 236
G. R. Tremblay, C. P. O'Dea, S. A. Baum, A. Koekemoer, W. B. Sparks, G. de Bruyn, A. Schoenmakers
Tremblay et al. 2010, ApJ, 715, 172 (arXiv)
HST FUV Observations of Brightest Cluster Galaxies: The Role of Star Formation in Cooling Flows and BCG Evolution
K. P. O'Dea, A. C. Quillen, C. P. O'Dea, G. R. Tremblay, B. T. Snios, S. A. Baum, K. Christiansen, J. Noel-Storr, A. C. Edge, M. Donahue, G. M. Voit
O'Dea et al. 2010, ApJ, 719, 1619 (arXiv)
Three Candidate Clusters of Galaxies at Redshift ~1.8: The "Missing Link" Between Protoclusters and Local Clusters?
M. Chiaberge, A. Capetti, F. D. Macchetto, P. Rosati, P. Tozzi, G. R. Tremblay
Chiaberge et al. 2010, ApJL, 710, 107 (arXiv)
Chandra Observations of Low Redshift 3C Radio Galaxies: Nuclei, Diffuse Emission, Jets and Hotspots
F. Massaro, D. E. Harris, G. R. Tremblay, D. Axon, S. A. Baum, A. Capetti, M. Chiaberge, R. Gilli, G. Giovannini, P. Grandi, F. D. Macchetto, C. P. O'Dea, G. Risalti, W. B. Sparks
Massaro et al. 2010, ApJ, 714, 589 (arXiv)
HST/ACS Emission Line Snapshots of nearby 3CR Radio Galaxies I: The Data
G. R. Tremblay, M. Chiaberge, W. B. Sparks, S. A. Baum, M. G. Allen, D. J. Axon, A. Capetti, D. J. E. Floyd, F. D. Macchetto, G. K. Miley, J. Noel-Storr, C. P. O'Dea, E. S. Perlman, A. C. Quillen
Tremblay et al. 2009, ApJS, 183, 278 (arXiv)
Low-Power Radio Galaxies in the Distant Universe: A Search for FR I at 1 < z < 2 in the COSMOS Field
M. Chiaberge, G. R. Tremblay, A. Capetti, F. D. Macchetto, P. Tozzi, & W. B. Sparks
Chiaberge et al. 2009, ApJ, 696, 1003, (arXiv)
Isophotal Structure and Dust Distribution in Radio-Loud Elliptical Galaxies
G. R. Tremblay, M. Chiaberge, C. J. Donzelli, A. C. Quillen, A. Capetti, W. B. Sparks, & F. D. Macchetto
Tremblay et al. 2007, ApJ, 666, 109 (arXiv)
The Warped Nuclear Disk of Radio Galaxy 3C 449
G. R. Tremblay, A. C. Quillen, D. J. E. Floyd, J. Noel-Storr, S. A. Baum, D. Axon, C. P. O'Dea, M. Chiaberge, F. D. Macchetto, W. B. Sparks, G. K. Miley, A. Capetti, J. P. Madrid, & E. Perlman
Tremblay et al. 2006, ApJ, 643, 101 (arXiv)
Python Code
I develop and maintain a number of Python-based tools for both my own research and Chandra operations support. Most of these codes are public, and can be found here.
Stuff on Earth
Videos of recent dives:
My very amateur (astro)photography:
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just joyous news. Congratulations Makenzie!! https://t.co/bGGIb7eCAI