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Daniel Stern's Picture
Jet Propulsion Laboratory
M/S 169-224
4800 Oak Grove Drive
Pasadena, CA 91109

Daniel Stern
NuSTAR Project Scientist

  • A.B., Physics (cum laude) - Princeton University (1991)
  • M.A., Astronomy - University of California, Berkeley (1994)
  • Ph.D., Astrophysics - University of California, Berkeley (1999)

Research Interests
  • Observational cosmology; identifying and studying galaxies and galaxy clusters at high redshift
  • Active galaxies; understanding the cosmic history of black hole formation and activity


NuSTAR, launched in June 2012, is a pathfinder mission that has opened the high energy X-ray sky to sensitive study for the first time.

Euclid Icon Euclid
Euclid is a mission designed to study "dark energy", the hypothesized cause of the Universe's accelerated expansion.

Wide-field Infrared Survey Explorer (WISE) is a four-channel, super-cooled infrared telescope designed to survey the entire sky with 1,000 times more sensitivity than previous infrared missions.

Spitzer Icon Spitzer
The Spitzer Space Telescope (formerly SIRTF, the Space Infrared Telescope Facility) was launched into space by a Delta rocket from Cape Canaveral, Florida on 25 August 2003.

Professional Experience
  • NASA, Jet Propulsion Laboratory (1999-Present)
    • Project Scientist, NuSTAR (2007-Present)
    • Research Scientist, (2001-Present)
    • Caltech Postdoctoral Scholar, working with Peter Eisenhardt (1999-2001)
  • Graduate Researcher with Hyron Spinrad; Research implementing optical and infrared imaging and spectroscopy (Lick Observatory, Keck Observatory, HST, IRTF), emphasizing observational cosmology and the distant Universe (1993-1999)
  • Graduate Researcher with Joe Silk; Theoretical Cosmology Research Considering Microwave Background Fluctuations In A Topologically Closed Universe (1992-1993)

Selected Awards
  • NASA Exceptional Scientific Achievement Medal (2014)
  • NASA Group Achievement Award to the NuSTAR Science Team (2014)
  • NASA Exceptional Achievement Medal (2013)
  • Edward Stone Award for Outstanding Research Publication (2013)
  • Muhlmann Award from the Astronomical Society of the Pacific to the Spitzer Space Telescope Team (2010)
  • Lew Allen Award for Excellence in Research (2005)
  • IGPP Graduate Fellowship, University of California, Berkeley (1997-1999)
  • DAAD scholar in Munich, Germany (1991-1992)

Selected Publications

Over 350 Refereed Publications - First author publications include:

  1. Stern, D. et al., "Extreme Variability in a Broad Absorption Line Quasar," ApJ, submitted
  2. Stern, D., "The X-Ray to Mid-Infrared Relation of AGN at High Luminosity," ApJ, 807, 129 (2015)
  3. Stern, D. et al., "NuSTAR and XMM-Newton Observations of Luminous, Heavily Obscured WISE-Selected Quasars at z~2," ApJ, 794, 102. (2014)
  4. Stern, D. and Assef, R.J., "Revisiting the Gamma-Ray Source 2FGL J1823.8+4312", ApJL, 764, L30. (2013)
  5. Stern, D., et al., "Mid-Infrared Selection of AGN with WISE", ApJ, 753, 30 (2012)
  6. Stern, D., Jimenez, R., Verde, L., Kamionkowski, M., and Stanford, S.A., "Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements", JCAP, 2, 8 (2010)
  7. Stern, D., Jimenez, R., Verde, L., Kamionkowski, M., and Stanford, S.A., "Cosmic Chronometers: Constraining the Equation of State of Dark Energy. II: A Spectroscopic Catalog of Red Galaxies in Galaxy Clusters", ApJS, 188, 280 (2010)
  8. Stern, D., et al., "Mid-Infrared Selections of Brown Dwarfs and High-Redshift Quasars," ApJ, 663, 677-685 (2007)
  9. Stern, D., Chary, R., Eisenhardt, P., & Moustakas, L., "Spitzer Observations of the Prototypical Extremely Red Objects HR10 and LBDS53W091: Separating Dusty Starbursts from Old Ellipticals," AJ, 132, 1405-1414 (2006)
  10. Stern, D., Eisenhardt, P., Gorjian, V., et al., "Mid-Infrared Properties of Active Galaxies," Ap. J, 631, 163-168 (2005)
  11. Stern, D., Yost, S., Eckart, M., Harrison, F., Helfand, D., Djorgovski, S.G., Malhotra, S., & Rhoads, J.E., "Discovery of a Lyman-Alpha Emitting Galaxy at z = 6.545 and Constraints on the Epoch of Reionization," ApJ, 619, 12-18 (2005)
  12. Stern, D., Sand, D., van Dokkum, P.G., Bloom, J.S., Ellis, R.S., Frail, D.A., Kneib, J.-P., Koopmans, L.V.E., Nugent, P., Sullivan, M., and Treu, T., "Discovery of a Transient U -Band Dropout in a Lyman-Break Survey: A Tidally-Disrupted Star at z = 3.3?," ApJ, APJ, 612, 690-697 (2004)
  13. Stern, D., Hall, P., Barrientos, L.F., Bunker, A.J., Elston, R., Ledlow, M.J., Raines, S.N., & Willis, J., "Gemini-South + FLAMINGOS Demonstration Science: Near-IR Spectroscopy of the z = 5.77 Quasar SDSS J083643.85+005453.3," ApJ L, 596, L39-42 (2003)
  14. Stern, D., Holden, B., Stanford, S.A., & Spinrad, H., "Spectroscopic Confirmation of a Radio-Selected Galaxy Group at z = 1.11," AJ, 125, 2759-2768 (2003)
  15. Stern, D., et al., "SPICES II: Optical and Near-Infrared Identifications of Faint X-Ray Sources from Deep Chandra Observations of Lynx," AJ, 123, 2223-2245 (2002)
  16. Stern, D., et al., "Chandra Detection of a Type-II Quasar at z = 3.288," ApJ, 568, 71-81 (2002)
  17. Stern, D., Eisenhardt, P., Spinrad, H., Dawson, S., van Breugel, W., Dey, A., de Vries, W., & Stanford, S.A., "Evidence Against a Redshift z > 6 for the Galaxy STIS 123627+621755," Nature, 408, 560-562 (2000)
  18. Stern, D., Bunker, A.J., Spinrad, H., & Dey, A., "One-Line Redshifts and Searches for High-Redshift Lyman-Alpha Emission," ApJ, 537, 73-79 (2000)
  19. Stern, D., Spinrad, H., Eisenhardt, P.R., Bunker, A.J., Dawson, S., Stanford, S.A., & Elston, R., "Discovery of a Color-Selected Quasar at z = 5.50," ApJ, 533, L75-L78 (2000)
  20. Stern, D., Djorgovski, S.G., Perley, R., de Calvalho, R., Wall, J., "Radio Properties of Optically-Selected z > 4 Quasars," AJ, 132, 1526-1533 (2000)
  21. Stern, D., Dey, A., Spinrad, H., Maxfield, L., Dickinson, M., Schlegel, D., & Gonzalez, R., "New High Redshift Radio Galaxies from the MG Catalog," AJ, 117, 1122-1138 (1999)
  22. Stern, D. & Spinrad, H., "Search Techniques for Distant Galaxies," PASP, 111, 1475-1502 (1999)
  23. Stern, D., Spinrad, H., & Dickinson, M., "HST Observations of the Radio Galaxy MG 1136+1346 (z = 1.003)," AJ, 111, 102-108 (1996)
  24. Stern1, D., Scott, D., & Silk, J., "Microwave Background Anisotropy in a Toroidal Universe," Phys. Rev. Lett., 71, 20-23 (1993)

1 My surname at the time of this publication was Stevens; I have since returned to the pre-WWII family surname of Stern.

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