Hopkins, Philip F., Younger, Joshua D., Hayward, Christopher C., Narayanan, Desika, Hernquist, Lars
We use a novel method to predict the contribution of normal star-forming galaxies, merger-induced bursts, and obscured AGN, to IR luminosity functions (LFs) and global SFR densities. We use empirical...
A Physical Model for z~2 Dust Obscured Galaxies (2009)
Narayanan, Desika, Dey, Arjun, Hayward, Christopher, Cox, Thomas J., Bussmann, R. Shane, Brodwin, Mark, ...
We present a physical model for the origin of z~2 Dust-Obscured Galaxies (DOGs), a class of high-redshift ULIRGs selected at 24 micron which are particularly optically faint (F24/FR>1000). By...
The Star-Forming Molecular Gas in High Redshift Submillimeter Galaxies (2009)
Narayanan, Desika, Cox, Thomas J., Hayward, Christopher, Younger, Joshua D., Hernquist, Lars
We present a model for the CO molecular line emission from high redshift Submillimeter Galaxies (SMGs). By combining hydrodynamic simulations of gas rich galaxy mergers with the polychromatic...
The Formation of High Redshift Submillimeter Galaxies (2009)
Narayanan, Desika, Hayward, Christopher C., Cox, Thomas J., Hernquist, Lars, Jonsson, Patrik, Younger, Joshua D., ...
We describe a model for the formation of \zsim 2 Submillimeter Galaxies (SMGs) which simultaneously accounts for both average and bright SMGs while providing a reasonable match to their mean observed...
The Star Formation Rate - Dense Gas Relation in the Nuclei of Nearby Galaxies (2008)
Narayanan, Desika, Cox, Thomas J., Hernquist, Lars
We investigate the relationship between the star formation rate (SFR) and dense molecular gas mass in the nuclei of galaxies. To do this, we utilize the observed 850 micron luminosity as a proxy for...
Molecular Star Formation Rate Indicators in Galaxies (2007)
Narayanan, Desika, Cox, Thomas J., Shirley, Yancy, Dave, Romeel, Hernquist, Lars, Walker, Christopher K.
We derive a physical model for the observed relations between star formation rate (SFR) and molecular line (CO and HCN) emission in galaxies, and show how these observed relations are reflective of...
The Role of Galactic Winds on Molecular Gas Emission from Galaxy Mergers (2007)
Narayanan, Desika, Cox, T. J., Kelly, Brandon, Dave, Romeel, Hernquist, Lars, Di Matteo, Tiziana, ...
We assess the impact of starburst and AGN feedback-driven winds on the CO emission from galaxy mergers, and, in particular, search for signatures of these winds in the simulated CO morphologies and...
The Nature of CO Emission From z~6 Quasars (2007)
Narayanan, Desika, Li, Yuexing, Cox, Thomas J., Hernquist, Lars, Hopkins, Philip, Chakrabarti, Sukanya, ...
We investigate the nature of CO emission from z~6 quasars by combining non-LTE radiative transfer calculations with merger-driven models of z~6 quasar formation that arise naturally in LCDM...
Molecular Line Emission from Gravitationally Unstable Protoplanetary Disks (2006)
Narayanan, Desika, Kulesa, Craig, Boss, Alan, Walker, Christopher K.
In the era of high resolution submillimeter interferometers, it will soon be possible to observe the neutral circumstellar medium directly involved in gas giant planet (GGP) formation at physical...
Molecular Outflows in Galaxy Merger Simulations with Embedded AGN (2006)
Narayanan, Desika, Cox, Thomas J., Robertson, Brant, Dave, Romeel, Di Matteo, Tiziana, Hernquist, Lars, ...
We study the effects of feedback from active galactic nuclei (AGN) on emission from molecular gas in galaxy mergers by combining hydrodynamic simulations which include black holes with a...
Simulated Molecular Gas Emission in Galaxy Mergers with Embedded AGN (2006)
Narayanan, Desika, Cox, Thomas J., Robertson, Brant, Dave, Romeel, Di Matteo, Tiziana, Hernquist, Lars, ...
We investigate the effect of embedded active galactic nuclei (AGN) in galaxy mergers on the CO molecular line emission by combining non-local thermodynamic equilibrium (LTE) radiative transfer...
Warm-Dense Molecular Gas in the ISM of Starbursts, LIRGs and ULIRGs (2005)
Narayanan, Desika, Walker, Christopher K., Groppi, Christopher E.
The role of star formation in luminous and ultraluminous infrared galaxies is a hotly debated issue: while it is clear that starbursts play a large role in powering the IR luminosity in these...
Variability Tests for Intrinsic Absorption Lines in Quasar Spectra (2003)
Narayanan, Desika, Hamann, Fred, Barlow, Tom, Burbidge, E. M., Cohen, Ross D., Junkkarinen, Vesa, ...
Quasar spectra have a variety of absorption lines whose origins range from energetic winds expelled from the central engines to unrelated, intergalactic clouds. We present multi-epoch, medium...