Shardha Jogee 's Homepage

Dr. Shardha Jogee
Department of Astronomy
The University of Texas at Austin
1 University Station C1400, RLM 16.224
Austin, TX 78712-0259

Phone: (512) 471 1395
Fax : (512) 471 6016
Office : RLM 16.224


I am a Professor and the current Department Chair of the Department of Astronomy at the University of Texas (UT) at Austin, conducting research on the evolution of galaxies. Prior to joining UT, I was a tenure-track astronomer at the Space Telescope Science Institute (STScI) which is responsible for science operations of NASA's Hubble Space Telescope (HST) and the future next generation James Webb Space Telescope (JWST).

CV + Publications
Public Education Outreach

Education and Appointments

  • Postdoctoral Scholar, Astronomy, CalTech, U.S.A (1999-2002)
  • Assistant Astronomer, Space Telescope Science Institute (which oversees the science operation of NASA's space facilities, including the Hubble Space Telesope and the James Webb Space Telescope) U.S.A (2002--2004)

Research Program

Research Overview: The research program in our group addreses central questions on the evolution of galaxies as a function of cosmic epoch, mass, and environment. How do galaxies grow their stars, black holes, and dark matter halos across cosmic time and vastly different environments? What is the role played by theoretically predicted growth modes, such as violent mergers of galaxies and more `quiescent' slower modes (e.g., gas accretion along cosmological filaments and secular evolution driven by bars)? How do galaxy clusters -- some of the largest bound structures in the Universe -- form?

Summary of Publications: As of September 2017, my publication record includes 186 publications of which 77 are peer-reviewed refereed publications in high impact journals. My publications have received over 6990 citations, my current citation rate is over 530 citations per year, and my h-index is 41. Please see my
CV for details

Summary of Grant Awards: I have been awarded over 3 million USD (~$3.1M) in external research and education grants over the period 2004 to 2015. Research grants account for ~$2.4M, of which ~$1.8M are from grants where I am the Principal Investigator. Education and outreach grants account for ~$0.7M. For multi-institution grants, the grant amounts listed above include only the amount awarded to my institution with me as PI, Co-PI, or Co-I. Please see my
CV for details.

International Science Collaborations: I am a member of the following international science collaborations, which have conducted some of the largest or deepest galaxy surveys to date. Within the above collaborations, my research group (including Marinova, Heiderman, Weinzirl, Barazza, Kaplan, Carrillo, Florez, Sherman) and I have led a dozen papers on the structure, merger, and assembly history of galaxies that have garnered over 800 citations to date.

Research highlights: Some key results from my group include: (a) While earlier work suggested a dearth of barred galaxies at earlier times, we were the first to demonstrate that strong stellar bars are common in massive disk galaxies over the last eight billion years, a period long enough for bars to drive significant secular evolution of galaxies (Jogee et al. 2004); (b) We showed that contrary to common lore, only at most 30% of the cosmic star formation rate density can be assigned to visible major mergers over half of the age of the Universe. We also set the first empirical constraints on the minor merger rate of galaxies over that epoch (Jogee et al. 2009); (c) We found that when the Universe was merely a few billion years old, the majority (>60%) of massive galaxies were disk-dominated and over a third were ultra-compact (Weinzirl, Jogee et al. 2011). This result poses serious challenges to current state-of-the-art theoretical models. Please see my CV for details and contact me for a list of current projects for graduate students.

The Hubble Ultra Deep Field (HUDF), the deepest visible-light image ever made of the Universe, (Credit: NASA, ESA, S Beckwith and HUDF home team ) shows the first galaxies to emerge from the so-called "dark ages," (the time shortly after the big bang when the first stars reheated the cold, dark universe), and chronicles a period when the universe was younger and more chaotic, with violent interactions between galaxies.

Public Education Outreach

Outreach Activities

Please see CV for a detailed list. Below are a few selected activities:

  • Astro 104: Undergraduate Astronomy Seminar (Science Majors) : Fall 2008

WWW home page (last update Nov. 1, 2009)