Browsing by Author "Urry, C. Meg"
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- ItemChandra Observations of Galaxy Zoo Mergers : Frequency of Binary Active Nuclei in Massive Mergers.(2012) Teng, Stacy H.; Treister, Ezequiel; Schawinski, Kevin; Urry, C. Meg; Darg, Dan W.; Kaviraj, Sugata; Oh, Kyuseok; Bonning, Erin W.; Cardamone, Carolin N.; Keel, William C.; Lintott, Chris J.; Simmons, Brooke D.
- ItemCharacterizing the Molecular Gas in Infrared Bright Galaxies with CARMA(2024) Alatalo, Katherine; Petric, Andreea O.; Lanz, Lauranne; Rowlands, Kate; Vivian, U.; Larson, Kirsten L.; Armus, Lee; Barcos-Munoz, Loreto; Evans, Aaron S.; Koda, Jin; Luo, Yuanze; Medling, Anne M.; Nyland, Kristina E.; Otter, Justin A.; Patil, Pallavi; Penaloza, Fernando; Salim, Diane; Sanders, David B.; Sazonova, Elizaveta; Skarbinski, Maya; Song, Yiqing; Treister, Ezequiel; Urry, C. MegWe present the CO(1-0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA). We detect 100 GHz continuum in 16 of the 28 CARMA GOALS galaxies, which trace both active galactic nuclei (AGNs) and compact star-forming cores. The GOALS galaxies show a variety of molecular gas morphologies, though in the majority of cases the average velocity fields show a gradient consistent with rotation. We fit the full continuum spectral energy distributions (SEDs) of each of the sources using either magphys or SED3FIT (if there are signs of an AGN) to derive the total stellar mass, dust mass, and SFRs of each object. We adopt a value determined from luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) of alpha CO = 1.5-0.8+1.3 M circle dot (K km s-1 pc2)-1, which leads to more physical values for f mol and the gas-to-dust ratio. Mergers tend to have the highest gas-to-dust ratios. We assume the cospatiality of the molecular gas and star formation and plot the CARMA GOALS sample on the Schmidt-Kennicutt relation, where we find that they preferentially lie above the line set by normal star-forming galaxies. This hyper-efficiency is likely due to the increased turbulence in these systems, which decreases the freefall time compared to star-forming galaxies, leading to "enhanced" star formation efficiency. Line wings are present in a non-negligible subsample (11/28) of the CARMA GOALS sources and are likely due to outflows driven by AGNs or star formation, gas inflows, or additional decoupled gas components.
- ItemDust-corrected Colors Reveal Bimodality in the Host-galaxy Colors of Active Galactic Nuclei at z ~ 1.(2010) Cardamone, Carolin N.; Treister, Ezequiel; Urry, C. Meg; Schawinski, Kevin; Brammer, Gabriel; Gawiser, Eric
- ItemEvidence for Three Accreting Black Holes in a Galaxy at z ~ 1.35: A Snapshot of Recently Formed Black Hole Seeds?(2011) Schawinski, Kevin; Treister, Ezequiel; Urry, C. Meg; Simmons, Brooke D.; Natarajan, Priyamvada; Glikman, Eilat
- ItemFinding rare AGN: X-ray number counts of Chandra sources in Stripe 82.(2013) LaMassa, Stephanie M.; Treister, Ezequiel; Urry, C. Meg; Glikman, Eilat; Cappelluti, N.; Civano, Francesca; Comastri, A.; Böhringer, Hans; Cardamone, Carie; Chon, Gayoung; Kephart, Miranda
- ItemFinding rare AGN: XMM-Newton and Chandra observations of SDSS Stripe 82.(2013) LaMassa, Stephanie M.; Treister, Ezequiel; Urry, C. Meg; Cappelluti, N.; Civano, Francesca; Ranalli, Piero; Glikman, Eilat; Richards, Gordon; Ballantyne, David; Stern, Daniel; Comastri, A.
- ItemGalaxy Zoo: The Fundamentally Different Co-Evolution of Supermassive Black Holes and Their Early- and Late-Type Host Galaxies.(2010) Schawinski, Kevin; Treister, Ezequiel; Urry, C. Meg; Virani, Shanil; Coppi, Paolo; Bamford, Steven P.; Lintott, Chris J.; Sarzi, Marc; Keel, William C.; Kaviraj, Sugata; Cardamone, Carolin N.
- ItemHeavily Obscured Active Galactic Nuclei in High-redshift Luminous Infrared Galaxies.(2010) Treister, Ezequiel; Urry, C. Meg; Schawinski, Kevin; Cardamone, Carolin N.; Sanders, David B.
- ItemHeavily Obscured AGN in Star-Forming Galaxies at z sime 2.(2009) Treister, Ezequiel; Cardamone, Carolin N.; Schawinski, Kevin; Urry, C. Meg; Gawiser, Eric.; Virani, Shanil; Lira, Paulina; Kartaltepe, Jeyhan; Damen, Maaike; Taylor, EN.; Le Floc'H e; Justham, Stephen; Koekemoer, Anton M.
- ItemHeavily obscured quasar host galaxies at z ∼ 2 are discs, not major mergers.(2012) Schawinski, Kevin; Treister, Ezequiel; Simmons, Brooke D.; Urry, C. Meg; Glikman, Eilat
- ItemHST WFC3/IR Observations of Active Galactic Nucleus Host Galaxies at z ~ 2 : Supermassive Black Holes Grow in Disk Galaxies.(2011) Schawinski, Kevin; Treister, Ezequiel; Urry, C. Meg; Cardamone, Carolin N.; Simmons, Brooke; Yi, Sukyoung K.
- ItemMajor Galaxy Mergers and the Growth of Supermassive Black Holes in Quasars.(2010) Treister, Ezequiel; Natarajan, Priyamvada; Sanders, David B.; Urry, C. Meg; Schawinski, Kevin; Kartaltepe, Jeyhan
- ItemMajor Galaxy Mergers Only Trigger the Most Luminous Active Galactic Nuclei.(2012) Treister, Ezequiel; Schawinski, Kevin; Urry, C. Meg; Simmons, Brooke D.
- ItemMid-Infrared Properties and Color Selection for X-Ray-Detected Active Galactic Nuclei in the MUSYC Extended Chandra Deep Field-South.(2008) Cardamone, Carolin N.; Treister, Ezequiel; Urry, C. Meg; Damen, Maaike; van Dokkum, Pieter; Labbé, Ivo; Virani, Shanil N.; Lira, Paulina; Gawiser, Eric
- ItemObscured Active Galactic Nuclei and the X-Ray, Optical, and Far-Infrared Number Counts of Active Galactic Nuclei in the GOODS Fields.(2004) Treister, Ezequiel; Bauer, Franz Erik; Urry, C. Meg; Chatzichristou, Eleni; Alexander, D. M.; Koekemoer, Anton; Van Duyne, Jeffrey; Brandt, William N.; Bergeron, Jacqueline; Stern, Daniel; Moustakas, Leonidas A.
- ItemObscured GOODS Active Galactic Nuclei and Their Host Galaxies at z < 1.25 : The Slow Black Hole Growth Phase.(2011) Simmons, Brooke D.; Treister, Ezequiel; Van Duyne, J.; Urry, C. Meg; Koekemoer, A. M.; Grogin, N. A.
- ItemOn R-W1 as A Diagnostic to Discover Obscured Active Galactic Nuclei in Wide-area X-Ray Surveys.(2016) LaMassa, Stephanie M.; Treister, Ezequiel; Civano, Francesca; Brusa, Marcella; Stern, Daniel; Glikman, Eilat; Gallagher, Sarah; Urry, C. Meg