Shardha Jogee 's Homepage

Shardha Jogee 's Homepage Shardha Jogee

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

Email: sj@astro.as.utexas.edu
Phone: (512) 471 1395
Fax : (512) 471 6016
Office : RLM 16.224
URL : http://www.as.utexas.edu/~sj

Education	I am a professor in the Department of Astronomy at the University of Texas (UT) at Austin, and the current Undergraduate Advisor for Astronomy. 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
Awards
Research
Classes
Education and Public Outreach

Education/Appointments

B.S Physics (1992), M.A. Physics (1995), Cambridge University, England

M. S. (1994), M. Phil. (1994), Ph.D. (1999), Astronomy, Yale University, U.S.A

Postdoctoral Scholar, Astronomy, CalTech, U.S.A (1999-2002)

Astronomer, Space Telescope Science Institute, U.S.A (2002--2004)

Asst. Professor, University of Texas at Austin, USA (2004-Present)

Awards

National Science Foundation (NSF) Grant ($311,748), June 2006 (PI).
(Bars and their Impact on Galaxy Evolution over the Last Eight Billion Years)

NASA Long Term Space Astrophysics (LTSA) Grant ($558,000), Mar 2003 (PI).
(Structure and Dynamics of Local and Intermediate Redshift Disks)

NASA Education and Public Outreach award ($45,000), Mar 2006 (PI).
(Building a Bridge to Texas High School Science Teachers and Students).

Hubble Space Telescope Cycle 15 award (164 orbits), GO-10861, Apr 2006
(An ACS Treasury Survey of the Coma Cluster)

Hubble Space Telescope Cycle 14 award (80 orbits) GO-10395, 2005
(Environmental drivers of galaxy evolution: an HST survey of Abell 901/902 supercluster)

Hubble Space Telescope Cycle 13 award (31 orbits), GO-10428, 2004
(The colours of QSO host galaxies at z=2 and the evolution of their stellar masses)

American Association of University Women Educational Fellowship (AAUWEF), 1996

Amelia Earheart Fellowship, Zonta International, 1996

Yale University J. F. Enders Research Grant, Yale University, 1995

Sigma Xi Grants-in-Aid of Research, Sigma Xi Society, 1995

Yale University J. F. Enders Fellowship, Yale University, 1995

Elected to status of Fellow, Cambridge University, England, 1990-1992

Undergraduate Academic Scholarship in Physics, Cambridge University, England, 1989-1992

Current Research

Research Projects

My research program addreses addreses observational and theoretical aspects of the evolution, structure, and activities of disk galaxies across diverse environments,ranging from fields to rich clusters, and over a wide range of redshifts (z = 0 to 3), covering the last 12 billion years. In particular, we are working on the projects outlined below. (Here is a list of projects for students.

Impact of bars on galaxy evolution as a function of (z, environment), with a focus on the last 8 Gyr ( Related links. )

Impact of interaction/mergers on the evolution and star formation history of galaxies over z~0-1. ( Related links. )

Galaxy evolution in cluster environments (Coma and Abell clusters). ( Related links. )

What drives AGN and starburst activity in galactic nuclei? ( Related links. )

Star formation, stellar populations, dynamics of galaxy clusters at z=0 to 4 (pilot)

The projects involves the analysis of extensive multi-wavelength data, as well as a concurrent collaborative development of the theoretical framework addressing disk evolution. The multi-wavelength dataset for our projects include space-based observations (e.g., from the Hubble Space Telescope (HST), Chandra, Spitzer ), as well as ground-based optical, NIR, and radio data. In order to build these large datasets, we have set up international collaborations and conducted some of the largest and deepest observational surveys to date:

GEMS (Galaxy Evolution from Morphology and SEDs): GEMS is the largest contiguous field ever imaged with HST (900 arcmin2) in 2 filters (F606W) and F850LP). GEMS provides HST-based morphologies and accurate redshfits from COMBO-17 for 10,000 galaxies down to R<24 in the range: 0.2
- STAGES (Space Telescope A901/902 Galaxy Evolution Survey): A multiwavelength survey to probe the physical drivers of galaxy evolution in dense environments, using HST (80 orbits; ACS F606W), Spitzer (MIPS +IRAC), GALEX (FUV,NUV), Chandra XMM-Newton, COMBO-17 spectro-photometric redshifts, and gravitational lensing mass maps.
- The HST ACS Treasury Survey of the Coma Cluster: The survey will use 164 HST ACS orbits, along with Spitzer, GALEX, Chandra, and ground-based data of of Coma, the richest galaxy cluster in the local Universe, in order to study the impact of environment on galaxy evolution and provide a long-needed legacy database for comparison with environments at different densities and redshifts.
- HUDF (Hubble Ultra Deep Field): HUDF is the deepest visible-light map ever made of the Universe, reaching more than 1.5 mag deeper than the original Hubble Deep Field (HDF). Memeber the HUDF home team that planned and implemented the HUDF: (1) "Planning of the ACS Ultra Deep Field" by Jogee, S., Ferguson, H., Stiavelli, M., Panagia, N., and Riess, A.; (2) "Radio and Sub-mm Considerations for the ACS Ultra Deep Field" by Koekomoer, A., Jogee, S., Beckwith, S. V. W., and Stiavelli, M. Scientific drivers of the UDF include probing the tail of the reionization epoch, constraining the star formation history of the Universe, probing the faint end of the galaxy luminosity function, and tracking the origin, structure, and merger history of galaxies as they evolve onto and off the Hubble sequence.
- GOODS (Great Observatories Origins Deep Survey): GOODS unites extremely deep observations from the Spitzer Space Telescope, Hubble, and Chandra, ESA's XMM-Newton, and from the most powerful ground-based facilities, to survey the distant universe to the faintest flux limits across the broadest range of wavelengths.
Publications

For a full bibliography, see NASA ADS or PDF version. Below is a selected subset of publications:
1. The Fueling and Evolution of AGN: Internal and External Triggers
  Invited Review, Chapter 6 : Jogee, S. 2006, in Physics of Active Galactic Nuclei at all Scales, Lecture Notes in Physics, Vol. 693, Eds. D. Alloin, R. Johnson, and P. Lira (Springer: Berlin Heidelberg), 143
2. `Characterizing Bars at z~0 in the OSUBSGS: Implications for the Evolution of Barred Galaxies'
  Marinova, I. & Jogee, S. 2006, ApJ, submitted (astro-ph/0608039)
3. `Stellar Bar Evolution in Cuspy and Flat-cored Triaxial CDM Halos'
  Berentzen, I., Shlosman, I., & Jogee, S. 2006, ApJ, 637, 582
4. `Color, Structure, and Star Formation History of Dwarf Galaxies over 3 Gyr with GEMS and SDSS'
  Barazza, F.D., Jogee, S., Rix, H.-W., et al, 2006, ApJ, 643, 162
5. `Dry Mergers in GEMS: The Dynamical Evolution of Massive Early-Type Galaxies'
  Bell, E.F., et al. 2006, ApJ, 640, 241
6. `The Hubble Ultra Deep Field'
  Beckwith, S.~V.~ W. et al, 2006, AJ, accepted
7. The Central Region of Barred Galaxies: Molecular Environment, Starbursts, and Secular Evolution
  Jogee, S., Scoville, N., & Kenney, J.~D.~P. 2005, ApJ, 630, 837
8. `GEMS: Which Galaxies Dominate the z~0.7 Ultraviolet Luminosity Density?'
  Wolf, C., et al 2005, ApJ, 630, 771
9. `Bar Evolution over the Last 8 Billion Years: A Constant Fraction of Strong Bars in the GEMS Survey'
  Jogee, S., Barazza, F., Rix, H.-W., et al 2004, ApJl, 615, L105
10. `Structure and Evolution of Starburst and Normal Galaxies in the GOODS'
  Mobasher, M., Jogee, S., Dahlen, T. et al., 2004, ApJL, 600/2, 74
11. `Observing the formation of the Hubble sequence in GOODS'
  Conselice, C. J., Grogin, N. A., Jogee, S, et al. 2004, ApJL, 600/2, 9
12. `GEMS: Galaxy Evolution from Morphologies and SEDs'
  Rix, H.-W., et al. 2004, ApJS, 152, 163
13. `The Great Observatories Origins Deep Survey (GOODS)'
  Giavalisco et al. 2004, ApJL, 600/2, 1
14. Gas Dynamics in NGC 5248: Fueling a Circumnuclear Starburst Ring
  Jogee, S., Shlosman, I., Laine, S., Englmaier, P., Scoville, N. Z., et al 2002, ApJ, 575, 156
15. Discovery and Implications of a New Large-Scale Stellar Bar in NGC 5248
  Jogee, S., Knapen, J. H., Laine, S., et al 2002, ApJL, 570, L55
16. `Multiepoch Multiwavelength Spectra and Models for Blazar 3C 279'
  Hartman, R. C., et al., 2001, ApJ, 553, 683
17. `Molecular Gas in The Central Kpc of Starbursts and AGN'
  Jogee, S., et al 2001, ASP Conf. Series, Vol. 249, The Central kpc of Starbursts and AGN (invited)
18. A Gas-rich Nuclear Bar Fueling a Powerful Central Starburst in NGC 2782
  Jogee, S., Kenney, J. D. P., & Smith, B. J. 1999, ApJ, 526, 665
19. `The Molecule-Rich tail of the peculiar galaxy NGC 2782 (Arp 215)'
  Smith, B. J., Curtis, S., Kenney, J. D. P., & Jogee, S. 1999, AJ, 117, 1237
20. The remarkable starburst-driven outflow in NGC 2782
  Jogee, S., Kenney, J. D. P., & Smith, B. J. 1998, ApJL, 494, L185
21. `The optical counterpart of the superluminal source GRO J1655-40'
  Bailyn, C. D., Orosz, J. A., Girard, T. M., Jogee, S. et al. 1995, N ature, Vol. 374. p 701
Research Group/Advisees
- Postdoctoral Fellows: Postdoctoral Fellows: Dr. Fabio Barazza (Mar 2004-Present, UT Austin); Dr Ingo Berentzen (Mar 2004-July 2006, U of Kentucky, in collaboration with Prof. Shlosman).

Graduate Students: Irina Marinova (Sep 2005--Present, UT Austin), Amanda Heidermann (Sep 2006--Present; UT Austin); Naveen Reddy (2002, CalTech, co-supervised with Prof. Nick Scoville).

Masters Level DA/Research Scientists: James Davies (2004--2006; STScI); Inge Heyer (2003-2004; STScI).

Dean's Scholars and Undergraduate Students: Kyle Penner (Mar 2005--Present, UT Austin; Dean's Scholar); Sarah Miller (May 2006--Present; UT Austin; Dean's Scholar); Kyle Lake (Sep 2005--Apr 2006, UT Austin); Steven Roloff (Sep 2005--Dec 2006, UT Austin); Liz Aiello (Sep 2005--June 2006, UT Austin); Gabriel Lubell (June 2003, summer student, Vassar College/STScI).

Images from GEMS and HUDF

Excerpts from (GEMS) Left: Examples of bars and spiral arms in disk galaxies at redshifts z~0.3-0.9. or lookback times of 3.6--7.5 Gyr, from Jogee et al (2004). Right: A particularly spectacular double galaxy interaction. (SOURCE: the GEMS collaboration; Jogee et al. 2003)

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.