Astrophysics with the SPHEREx
All-Sky Spectral Survey. II.

A Community Workshop on the Scientific Synergies
Between the SPHEREx Survey and Other Astronomy Observatories
January 30-31, 2018 in Cambridge
at the Harvard-Smithsonian Center for Astrophysics

The SPHEREx team held a community workshop, SPHEREx Synergies, at the end of January 2018. The focus of this workshop was to understand how the results from SPHEREx will complement, enhance, build upon, and set the stage for scientific explorations from other programs, past, present, and future. We will broaden the discussion to include not only non-NASA space missions but also ground-based facilities and surveys accessing the entire electromagnetic spectrum. We will also seek input from the community on issues related to the SPHEREx data products, including the data release schedule and the nature of higher-order data products.

LODGING IN CAMBRIDGE: Of the many lodging options in Cambridge, the following are actually within a reasonably walkable distance from the CfA (but bear in mind what New England weather can be like in January):
Bed & Breakfasts: Mary Prentiss Inn A Cambridge House A Friendly Inn Irving House A Bed and Breakfast in Cambridge
Nearby hotels (can be pricey): Sheraton Commander Freepoint Hotel Veritas Harvard Square Hotel ♠ More options are available from this comprehensive list of Cambridge-area lodging options maintained by the CfA.

Need directions to Phillips Auditorium? Maps of the CfA and its immediate neighborhood can be found HERE and HERE . It is probably easiest to walk to the CfA if you are lodging nearby, but if you prefer to drive, you'll need a parking permit. You can purchase parking permits for the Observatory parking lot at the Harvard Business Office.

MISSION OVERVIEW: SPHEREx was recently selected by NASA for a Phase A study as a medium class explorer mission (MIDEX). The expected launch is in 2022. SPHEREx will return spectra from 0.75 to 5.0 um of every 6x6 arcsec pixel on the sky. The spectral resolving power will be 41.5 from 0.75 to 4.1um and 150 from 4.1 to 5.0 um, and the 5-sigma sensitivity at the end of the two year mission is expected to be better than 19th AB magnitude. The sensitivity estimates are compared to those of other surveys in the figure at left. The SPHEREx PI is Professor Jamie Bock of Caltech/JPL.

As was done for the SMEX mission concept, the SPHEREx science team designed the MIDEX version of SPHEREx to study three specific science issues: 1) Cosmic inflation, 2) The history of light production in the Universe, and 3) The evolution of ices in interstellar and protostellar environments. However, SPHEREx, as the first all-sky spectral survey in the 0.75-5.0 um band, will create a database applicable to a very wide range of astrophysical questions. Our intent for the workshop is to enlist the participation of the scientific community to explore how this database can inform and support other observatories, both space- and ground-based. We hope that this workshop will continue the discussion between the SPHEREx team and interested members of the astrophysics community that began at the first SPHEREx Workshop in 2016.

Most talks are alloted 15 minutes, with a short discussion period following each group of three, so you need not leave more than a minute or two of your assigned time for questions. For each talk, we are particularly interested in one or two slides defining pipeline products, ancillary datasets, etc., which you would need to carry out that particular investigation. Please also describe any value-added products, catalogs, atlases, and the like, which work on that investigation might spin off as part of the SPHEREx legacy.

We plan to post a white paper on the arXiv by mid-April describing the workshop. It would help us do this if you could prepare a couple of paragraphs summarizing your presentation, and also make your slides available to us. Please indicate if your presentation includes any data or information which you prefer not to share in this manner.

The SPHEREx system parameters are being updated and will be posted and updated on this page when they are available. This will include revised estimates of the expected performance, resolution vs. wavelength, pixel size, etc. But the baseline mission configuration will not change. In preparing your talk, you may also wish to consult the white paper published following our 2016 community workshop in Pasadena. Additional information describing SPHEREx's cosmological performance is also available in a Doré et al.

If you are not scheduled to give a presentation but would like to present one or two slides on a relevant topic, please come prepared to do so. We have structured the agenda to provide plenty of time for discussion and walk-on presentations at the end of each session.

Scientific Organizing Committee

Michael Werner (JPL, Co-Chair)
Olivier Doré (JPL, Co-Chair)
Gary Melnick (SAO)

Workshop Attendees

Matthew Ashby
Lindsey Bleem
Jamie Bock
Jennifer Burt
Peter Capak
Tzu-Ching Chang
Christine Chen
David Charbonneau
Francesca Civano
Ilse Cleeves
Charlie Conroy
Asantha Cooray
Brendan Crill
Ian Crossfield
Michael Cushing
Olivier Doré
Niv Drory
Cora Dvorkin
Daniel Eisenstein
Catherine Espaillat
Giovanni Fazio
Simone Ferraro
Douglas Finkbeiner
Jenny Greene
Jackie Hewitt
David Hogg
Hyun-Sung Jun
Woong-Seob Jeong
Jennifer Johnson
Minjin Kim
Davy Kirkpatrick
Phil Korngut
Theresa Kowalski
Jianshu Li
Casey Lisse
Meredith MacGregor
Eric Mamajek
Gary Melnick
Brice Ménard
Phil Mauskopf
Karin Öberg
Jennifer Rocca
Mara Salvato
Nick Scoville
Emmanuel Schaan
Yong-Seon Song
Dan Stevens
Harry Teplitz
Volker Tolls
Stephen Unwin
Meg Urry
Benjamin Wandelt
Michael Werner
David Wilner
Rogier Windhorst
Scott Wolk
Harold Yorke
Michael Zemcov