Galaxy Formation and Evolution

Extragalactic Database for Galaxy Evolution (EDGE)

The CARMA EDGE survey will provide a measurement of the distribution of molecular gas

in a statistically significant sample of over one hundred galaxies. The survey targets the J = 1-0 transition of CO and its 13CO isotopologue, which trace the bulk of the cold, star-forming gas. Paired with matched IFU mapping of the entire optical spectrum, this survey enables studies of resolved star formation efficiencies and histories, gas and stellar kinematics, nebular extinctions, and ionized gas properties across the Hubble sequence. The EDGE survey is designed to move the field of millimeter-wave interferometry from the piecemeal collection of case studies into the realm of large samples.

Project Website

Panchromatic Hubble Andromeda Treasury (PHAT)

The Panchromatic Hubble Andromeda Treasury (PHAT) used the Hubble Space Telescope (HST) to take pictures of our neighboring galaxy Andromeda, which is 2.5 million light years away from us. The exquisite spatial resolution of the HST resolved Andromeda into individual stars, meaning that we are able to study it at the same level of detail as our own Milky Way.

The Panchromatic Hubble Andromeda Treasury (PHAT) is a Hubble Space Telescope (HST) survey of the disk of the Andromeda Galaxy, the closest large galaxy to the Milky Way.  With over 40 full days of HST time, PHAT measure the luminosities and colors of nearly 120 million individual stars over 1/3 of Andromeda's star-forming disk.  PHAT is one of the largest and most ambitious Hubble programs in history, and has led to new insights into a wide variety of galaxy and stellar astrophysics from the evolution of the Andromeda galaxy across comic time to the intricate details of star-formation and its interplay with Andromeda gas supply.

Realfast: Fast Transient Surveys with the VLA

realfast is a new instrument dedicated to millisecond transient surveys at the Very Large Array (VLA). A major motivation for this system is to search for Fast Radio Bursts (FRBs), a mysterious, new class of fast radio transient. Each realfast FRB detection will be localized so precisely that we can identify their multiwavelength associations, such as a host galaxy. This was proven with the first realfast discovery, the first subarcsecond FRB localization and association with a host galaxy. More information available at http://realfast.io

The 3D-HST Survey

A Spectroscopic Galaxy Evolution Survey with the Hubble Space Telescope.

3D-HST is a near-infrared spectroscopic survey with the Hubble Space Telescope designed to study the physical processes that shape galaxies in the distant Universe. This Treasury program has been allocated 248 orbits of HST time during Cycles 18 and 19.  3D-HST is surveying ~600 square arcminutes of well-studied extragalactic survey fields (AEGIS, COSMOS, GOODS-S, UKIDSS-UDS) with two orbits of primary WFC3/G141 grism coverage and two to four orbits with ACS/G800L coverage. 3D-HST provides the critical third dimension – redshift – for some ~10,000 galaxies at z>1.

3D-HST Publications