\begin{thebibliography}{19}
\expandafter\ifx\csname natexlab\endcsname\relax\def\natexlab#1{#1}\fi

\bibitem[{{Baldry} {et~al.}(2004){Baldry}, {Glazebrook}, {Brinkmann}, {Ivezi{\'
  c}}, {Lupton}, {Nichol}, \& {Szalay}}]{Baldry2004}
{Baldry}, I.~K., {Glazebrook}, K., {Brinkmann}, J., {Ivezi{\' c}}, {\v Z}.,
  {Lupton}, R.~H., {Nichol}, R.~C., \& {Szalay}, A.~S. 2004, \apj, 600, 681

\bibitem[{{Balogh} {et~al.}(2004){Balogh}, {Baldry}, {Nichol}, {Miller},
  {Bower}, \& {Glazebrook}}]{Balogh2004}
{Balogh}, M.~L., {Baldry}, I.~K., {Nichol}, R.~C., {Miller}, C., {Bower}, R.,
  \& {Glazebrook}. 2004, \apj, in press, astro-ph/0406266

\bibitem[{{Barnes}(1988)}]{Barnes88}
{Barnes}, J.~E. 1988, \apj, 331, 699

\bibitem[{{Barnes}(1992)}]{Barnes92}
---. 1992, \apj, 393, 484

\bibitem[Blanton et~al.(2003)]{Blanton2003}
Blanton, M.~R., et al. 2003, ApJ, 594, 186

\bibitem[{{Bruzual} \& {Charlot}(2003)}]{Bruzual2003}
{Bruzual}, G. \& {Charlot}, S. 2003, \mnras, 344, 1000

\bibitem[{{Ciotti} \& {Ostriker}(1997)}]{Ciotti97}
{Ciotti}, L. \& {Ostriker}, J.~P. 1997, \apjl, 487, L105

\bibitem[{{Ciotti} \& {Ostriker}(2001)}]{Ciotti2001}
---. 2001, \apj, 551, 131

\bibitem[Cowie et al. (1996)]{Cowie1996}
Cowie, L.~L., Songaila, A., Hu, E.~M., Cohen, J.~G. 1996, AJ, 112, 839

\bibitem[{{Di Matteo} {et~al.}(2004){Di Matteo}, {Springel}, \&
  {Hernquist}}]{DiMatteo2004}
{Di Matteo}, T., {Springel}, V., \& {Hernquist}, L. 2004, in preparation

\bibitem[{{Franx} {et~al.}(2003){Franx}, {Labb{\' e}}, {Rudnick}, {van Dokkum},
  {Daddi}, {F{\" o}rster Schreiber}, {Moorwood}, {Rix}, {R{\" o}ttgering}, {van
  de Wel}, {van der Werf}, \& {van Starkenburg}}]{Franx2003}
{Franx}, M., et al. 2003, \apjl, 587, L79

\bibitem[{{Hernquist}(1990){Hernquist}}]{hern90}
{Hernquist}, L. 1990, \apj, 356, 359

\bibitem[{{Hernquist}(1992)}]{Hernquist92}
---. 1992, \apj, 400, 460

\bibitem[{{Hernquist}(1993)}]{Hernquist93}
---. 1993, \apj, 409, 548

\bibitem[Hernquist \& Mihos(1995)]{HM95}
Hernquist, L. \& Mihos, J.C. 1995, \apj, 448, 41

\bibitem[{{Im} {et~al.}(2001){Im}, {Faber}, {Gebhardt}, {Koo}, {Phillips},
  {Schiavon}, {Simard}, \& {Willmer}}]{Im2001}
{Im}, M., {Faber}, S.~M., {Gebhardt}, K., {Koo}, D.~C., {Phillips}, A.~C.,
  {Schiavon}, R.~P., {Simard}, L., \& {Willmer}, C.~N.~A. 2001, \aj, 122, 750

\bibitem[Kauffmann {et~al.}(2003a)]{Kauffmann2003a}
{Kauffmann}, G., et al. 2003a, \mnras, 241, 54


\bibitem[Kauffmann {et~al.}(2003b)]{Kauffmann2003b}
{Kauffmann}, G., et al. 2003b, \mnras, 341, 54

\bibitem[Kazantzidis et al.(2004)]{Kazantzidis2004}
Kazantzidis, S. et al. 2004, \apj, submitted, astro-ph/0407407

\bibitem[Kawata \& Gibson (2004)]{Kawata2004}
Kawata, D., Gibson, B.~K. 2004, \mnras, submitted, astro-ph/0409068

\bibitem[Mihos \& Hernquist(1994)]{MH94}
Mihos, J.C. \& Hernquist, L. 1994, \apj, 425, L13

\bibitem[Mihos \& Hernquist(1996)]{MH96}
Mihos, J.C. \& Hernquist, L. 1996, \apj, 464, 641

\bibitem[{{Silk} \& {Rees}(1998)}]{Silk98}
{Silk}, J. \& {Rees}, M.~J. 1998, \aap, 331, L1

\bibitem[{{Springel} {et~al.}(2004){Springel}, {Di Matteo}, \&
  {Hernquist}}]{Springel2004}
{Springel}, V., {Di Matteo}, T., \& {Hernquist}, L. 2004, in preparation

\bibitem[{{Springel} \& {Hernquist}(2002)}]{Springel2002}
{Springel}, V. \& {Hernquist}, L. 2002, \mnras, 333, 649

\bibitem[{{Springel} \& {Hernquist}(2003)}]{Springel2003}
---. 2003, \mnras, 339, 289

\bibitem[{{Springel} {et~al.}(2001){Springel}, {Yoshida}, \&
  {White}}]{Springel2001}
{Springel}, V., {Yoshida}, N., \& {White}, S.~D.~M. 2001, New Astronomy, 6, 79

\bibitem[Strateva et~al.(2001)]{Strateva2001}
Strateva, I., et al. 2001, AJ, 122, 1861

\bibitem[Toomre(1977)]{Toomre77}
Toomre, A. 1977, in The Evolution of Galaxies and Stellar 
Populations, ed. B.M. Tinsley \& R.B. Larson (Yale Univ. Obs: New Haven),
p. 401

\bibitem[{{Toomre} \& {Toomre}(1972)}]{Toomre72}
{Toomre}, A. \& {Toomre}, J. 1972, \apj, 178, 623

\bibitem[{{Tremaine} {et~al.}(2002){Tremaine}, {Gebhardt}, {Bender}, {Bower},
  {Dressler}, {Faber}, {Filippenko}, {Green}, {Grillmair}, {Ho}, {Kormendy},
  {Lauer}, {Magorrian}, {Pinkney}, \& {Richstone}}]{Tremaine2002}
{Tremaine}, S., et al. 2002, \apj, 574, 740

\bibitem[{{Wyithe} \& {Loeb}(2003)}]{Wyithe2003}
{Wyithe}, J.~S.~B. \& {Loeb}, A. 2003, \apj, 595, 614

\end{thebibliography}