Fall, S. Michael, Krumholz, Mark R., Matzner, Christopher D.
We investigate how the removal of interstellar material by stellar feedback limits the efficiency of star formation in molecular clouds and how this determines the shape of the mass function of young...
Fall, S. Michael, Chandar, Rupali, Whitmore, Bradley C.
We present new tests for disruption mechanisms of star clusters based on the bivariate mass-age distribution g(M,\tau). In particular, we derive formulae for g(M,\tau) for two idealized models in...
Ouchi, Masami, Mobasher, Bahram, Shimasaku, Kazuhiro, Ferguson, Henry C., Fall, S. Michael, Ono, Yoshiaki, ...
We present results of our large-area survey for z'-band dropout galaxies at z=7 in a 1568 arcmin^2 sky area covering the SDF and GOODS-N fields. Combining our ultra-deep Subaru/Suprime-Cam z'- and...
Chandar, Rupali, Fall, S. Michael, McLaughlin, Dean E.
We have constructed the mass function of globular star clusters in the Sombrero galaxy in bins of different internal half-mass density rho_h and projected galactocentric distance R. This is based on...
Shaping the Globular Cluster Mass Function by Stellar-Dynamical Evaporation (2007)
McLaughlin, Dean E., Fall, S. Michael
We show that the globular cluster mass function (GCMF) in the Milky Way depends on cluster half-mass density (rho_h) in the sense that the turnover mass M_TO increases with rho_h while the width of...
Star Cluster Demographics. I. A General Framework and Application to the Antennae Galaxies (2006)
Whitmore, Bradley C., Chandar, Rupali, Fall, S. Michael
We present a framework for understanding the demographics of star cluster systems, and develop a toy model which incorporates a universal initial power law mass function, selected formation...
Chandar, Rupali, Fall, S. Michael, Whitmore, Bradley C.
We present the age distributions for star clusters and individual stars in the Small Magellanic Cloud (SMC) based on data from the Magellanic Clouds Photometric Survey by Zaritsky and collaborators....
Relations Between the Luminosity, Mass, and Age Distributions of Young Star Clusters (2006)
We derive and interpret some relations between the luminosity, mass, and age distributions of star clusters, denoted here by phi(L), psi(M), and chi(tau), respectively. Of these, phi(L) is the...
The Age Distribution of Massive Star Clusters in the Antennae Galaxies (2005)
Fall, S. Michael, Chandar, Rupali, Whitmore, Bradley C.
We determine the age distribution of star clusters in the Antennae galaxies (NGC 4038/9) for two mass-limited samples (M > 3 x 10^4 M_{\odot} and M > 2 x 10^5 M_{\odot}). This is based on integrated...
STIS Spectroscopy of Young Star Clusters in "The Antennae" Galaxies (NGC 4038/4039) (2005)
Whitmore, Bradley C., Gilmore, Diane, Leitherer, C., Fall, S. Michael, Chandar, Rupali, Blair, William P., ...
Long-slit spectra of several dozen young star clusters have been obtained at three positions in the Antennae galaxies with the Space Telescope Imaging Spectrograph (STIS) and its 52"x0.2" slit. Based...
The Evolution of Damped Lyman-alpha Absorbers: Metallicities and Star Formation Rates (2005)
Kulkarni, Varsha P., York, Donald G., Lauroesch, James T., Fall, S. Michael, Khare, Pushpa, Woodgate, Bruce E., ...
The damped Lyman-alpha (DLA) and sub-DLA quasar absorption lines provide powerful probes of the evolution of metals, gas, and stars in galaxies. One major obstacle in trying to understand the...
Kulkarni, Varsha P., Fall, S. Michael, Lauroesch, James T., York, Donald G., Welty, Daniel E., Khare, Pushpa, ...
Most models of cosmic chemical evolution predict that the mass-weighted mean interstellar metallicity of galaxies should rise with time from a low value $\sim 1/30$ solar at $z \sim 3$ to a nearly...
Yan, Haojing, Dickinson, Mark, Eisenhardt, Peter R. M., Ferguson, Henry C., Grogin, Norman A., Paolillo, Maurizio, ...
Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are...
Dust Depletion and Extinction in a Gamma-Ray Burst Afterglow (2004)
Savaglio, Sandra, Fall, S. Michael
We put stringent constraints for the first time on the dust properties in the circumburst medium of a gamma-ray burst (GRB) afterglow. This is based on the optical spectrum of GRB 020813 (z=1.255),...
Mass, Age, and Space Distributions of Star Clusters (2004)
This article reviews some recent studies of the mass, age, and space distributions of star clusters, with a primary focus on the large population of clusters in the interacting Antennae galaxies....
The Size Evolution of High Redshift Galaxies (2003)
Ferguson, Henry C., Dickinson, Mark, Giavalisco, Mauro, Kretchmer, Claudia, Ravindranath, Swara, Idzi, Rafal, ...
Hubble Space Telescope images of high-redshift galaxies selected via color and photometric redshifts are used to examine the size and axial-ratio distribution of galaxies as a function of redshift at...
Metallicity Evolution of Damped Lyman-Alpha Galaxies (2002)
Kulkarni, Varsha P., Fall, S. Michael
We have reanalyzed the existing data on Zinc abundances in damped Ly-alpha (DLA) absorbers to investigate whether their mean metallicity evolves with time. Most models of cosmic chemical evolution...
Formation of Galactic Disks (2002)
We review progress in understanding the formation of galactic disks in the standard cosmogonic scenario involving gravitational clustering of baryons and dark matter and dissipative collapse of the...
The Unique History of the Globular Cluster Omega Centauri (2002)
Gnedin, Oleg Y., Zhao, HongSheng, Pringle, J. E., Fall, S. Michael, Livio, Mario, Meylan, Georges
Using current observational data and simple dynamical modeling, we demonstrate that Omega Cen is not special among the Galactic globular clusters in its ability to produce and retain the heavy...
Formation and Disruption of Globular Star Clusters (2001)
In the first part of this article, we review observations of the mass and luminosity functions of young and old star cluster systems. We also review some of the physical processes that may determine...
Dynamical Evolution of the Mass Function of Globular Star Clusters (2001)
We present a series of simple, largely analytical models to compute the effects of disruption on the mass function of star clusters. Our calculations include evaporation by two-body relaxation and...
Zhang, Qing, Fall, S. Michael, Whitmore, Bradley C.
We report on a multi-wavelength study of the relationship between young star clusters in the Antennae galaxies (NGC 4038/9) and their interstellar environment, with the goal of understanding the...
Dust Absorption and Emission in Galaxies at High and Low Redshifts (2001)
This article reviews three related topics: the extragalactic background l ight and its sources, evolution models for the dust absorption and emission in galaxies, and empirical constraints on these...
Global Evolution Models and the Extragalactic Background Light (2001)
This article outlines a method to interpret the extragalactic background light in terms of the large-scale, average properties of galaxies, including the comoving densities of stars and interstellar...
A Simple Model for the Absorption of Starlight by Dust in Galaxies (2000)
We present a new model to compute the effects of dust on the integrated spectral properties of galaxies, based on an idealized prescription of the main features of the interstellar medium (ISM). The...
Building Galaxies: Conference Summary (1999)
This article summarizes - from a personal perspective - some of the main themes that have emerged at this conference and in this field generally in the past few years.
The Mass Function of Young Star Clusters in the "Antennae" Galaxies (1999)
We determine the mass function of young star clusters in the merging galaxies the ``Antennae'' (NGC 4038/39) from deep images taken with the WFPC2 on the refurbished Hubble Space Telescope (HST)....
The Luminosity Function of Young Star Clusters In "The Antennae" Galaxies (NGC 4038/4039) (1999)
Whitmore, Bradley C., Zhang, Qing, Leitherer, Claus, Fall, S. Michael, Schweizer, Francois, Miller, Bryan W.
The WFPC2 of the HST has been used to obtain high-resolution images of NGC 4038/4039 that go roughly 3 magnitudes deeper in V than previous observations made during Cycle 2 (-14 < M_V < -6). To first...
Two Groups of Nearly Coeval Star Clusters in the Small Magellanic Cloud (1999)
Rich, R. Michael, Shara, Michael, Fall, S. Michael, Zurek, David
We report new photometry of populous intermediate-age clusters in the SMC using the {\sl Hubble Space Telescope}. In contrast to the accepted picture, these clusters appear to have formed in two...
Cosmic Histories of Stars, Gas, Heavy Elements, and Dust (1998)
Pei, Yichuan C., Fall, S. Michael, Hauser, Michael G.
We present a set of coupled equations that relate the stellar, gaseous, chemical, and radiation constituents of the universe averaged over the whole galaxy population. Using as input the available...
A Global Perspective on Star Formation (1996)
We outline a method to infer the global history of star formation in galaxies with input only from absorption-line observations of quasars. The application of the method to existing data leads to the...
Cosmic Emissivity and Background Intensity from Damped Lyman-Alpha Galaxies (1996)
Fall, S. Michael, Charlot, Stephane, Pei, Yichuan C.
We present a new method to compute the cosmic emissivity $\E_\nu$ and background intensity $J_\nu$. Our method is based entirely on data from quasar absorption-line studies, namely, the comoving...