Taiwan New Generation Optical Astronomy (TANGO) is a consortium composed of NCU, NCKU, and NTHU in Taiwan that pursues frontier research on solar system minor bodies, variable stars, and compact objects. As part of the ZTF partnership, we can use the formidable wide-filed camera to discover interesting sources and transients which we then follow up with our observing facilities at the Lulin Observatory in Taiwan.

--Albert Kong (Co-Investigator)

The Weizmann Institute has a long-term partnership with Caltech in wide-field transient surveys, stating from PTF (2009-2012) and iPTF, via ZTF and currently ZTF-II. Our interests are currently focused mostly on explosions of massive stars; Weizmann scientists have also been active in working on the infrastructure of surveys such as ZTF, for example in definition of photometric systems, development of image subtraction algorithms, and setting up and maintaining databases and facilities such as WISeREP and the Transient Name Server (TNS).

--Avishay Gal-Yam (Co-Investigator)

I like finding new explosions in the universe, and with the ZTF I have the luxury to find and classify several new supernovae each day (day in Stockholm is night on Palomar). I lead the ZTF transient working group within the partnership and steward the SEDM spectroscopic follow-up. Each morning I start with a cup of coffee and saving a few new transients, that makes many thousands of supernovae by now.

--Jesper Sollerman (Co-Investigator)

The ZTF groups at DESY and HU Berlin are using the unique wide-field coverage of ZTF to search for multi-messenger transients through comparisons with other astronomical time-domain facilities (neutrinos, gravitational waves and gamma-rays). We have developed the AMPEL analysis framework for parsing these heterogeneous data streams, a toolset which have also allowed the creation of a fully robotic networks of optical telescopes. This allows novel methods both for pushing observations of supernovae as close to explosion as possible, as well as for assembling large samples of standard candles that can constrain the evolution of structure in our nearby Universe.The observations of high-energy neutrinos in coincidences with Tidal Disruption Events detected by ZTF have made us particularly excited.

--Marek Kowalski (Co-Investigator)

--Anna Franckowiak (Co-Investigator)

--Mickael Rigault (Co-Investigator)

--Boris Gaensicke (Co-Investigator)

At Trinity College Dublin, we are exploring the origin of Type Ia supernovae and the diversity of thermonuclear explosive transients using ZTF’s unique large samples of high-cadence light curves combined with rapid spectroscopy. This work is vital for the continued use of Type Ia supernovae as cosmological distance indicators.

--Kate Maguire (Co-Investigator)

Joining the ZTF partnership provides two tremendous benefits for our institutions. First, of course, is access to the high-quality data products - many of our science interests are not covered by the public MSIP survey, and the ZTF system is unparalleled in its capability to conduct deep, wide-area target-of-opportunity response in the optical. More importantly, the partnership provides a framework to collaborate with an international team of exceptional scientists. Particularly for our junior members (graduate students, postdocs), this network has been invaluable for their professional development.

--Brad Cenko (Co-Investigator)

Northwestern University is extremely excited to be joining the ZTF collaboration. This new partnership will provide students and postdocs at NU access to the most prolific experiment to date for the discovery of extragalactic transients, an ideal training ground in advance of the Legacy Survey of Space and Time (LSST) by the Vera C. Rubin Observatory. Northwestern will be focused on the discovery of young Type Ia supernovae and building large samples of transients in order to facilitate the construction of machine learning algorithms to identify extremely rare explosions (such as electron capture supernovae).

--Adam Miller (Co-investigator)

--Patrick Bradey (Co-Investigator)

--Michael Schneider (Co-Investigator)

--George Helou (Co- Principal Investigator)

ZTF has drawn members from the world, from Taiwan through California through Israel, Europe and the US. I continue to be impressed by the sheer breadth of science carried out by this global partnership.

--Shri Kulkarni (Principal Investigator)