Roman at AAS Home

This workshop will cover several tools used for the data analysis and visualization of JWST and Roman data. This includes the Jdaviz visualization and data analysis package, the Advanced Scientific Data Format (ASDF) package, specreduce, photutils PSF photometry, and generalized world coordinate systems (gwcs). The goals are to introduce participants to these tools and provide hands-on time for participants to use the tools and ask questions to the developers. The format will include short presentations followed by instructor-guided tutorials using Jupyter notebooks.

Jdaviz is a package of astronomical data analysis visualization tools based on the Jupyter platform. These GUI-based tools link data visualization and interactive analysis. Presenters will provide examples of the latest features available in the various configurations (Specviz, Cubeviz, Imviz, and Specviz2d) and will guide attendees through basic and advanced workflows to analyze JWST spectra and images.

The Advanced Scientific Data Format (ASDF) is a next-generation interchange format for scientific data. It will be used as the data format for Roman Space Telescope Level 1 - 4 data products.

The workshop will also cover the Astropy packages specreduce (spectral extraction), photutils PSF photometry, and the generalized world coordinates system package (gwcs).

There will be time spent on hands-on exercises. Participants must bring a laptop with the software installed. Instructions on installing the necessary software will be provided before the workshop and help will be available at the workshop for those that experience problems with installations.

The prerequisites are a familiarity with astronomical data analysis. Basic Python experience is highly recommended to be able to participate in the exercises. Those without Python experience will still be able to use Jdaviz and gain useful information about the capabilities for data analysis in Python.

The Nancy Grace Roman Space Telescope is anticipated to generate close to 30 petabytes of data during its five-year primary mission, heralding a new era of big data in astronomy. As data sets grow too large for personal computers, virtual science platforms offer a solution by providing cloud-based data processing and analysis. The Roman Science Platform is being developed to offer the astronomical community a cloud computing environment for Roman data. It couples data-code proximity with a pre-configured software environment, making it easier for users to work with data. The platform also includes pre-loaded notebook tutorials and scientific workflows tailored to specific astronomical use cases. Utilizing the JupyterLab environment, users can create Jupyter Notebooks that seamlessly integrate code, analysis results, data visualizations, and other functionalities for handling astronomical images and catalogs.

This one-day workshop will provide the scientific community with an introductory overview of the Roman Science Platform. In addition to offering hands-on training, we aim to gather feedback, understand the needs of the user community, and identify ‘early adopters’ interested in utilizing the system for precursor science prior to the Roman launch.

The workshop will include both directed training and independent exploration exercises (i.e., hack hours). The training will feature presentations and short tutorials, alternating with hands-on practical exercises focused on exploring several high-level workflows. Examples include an introduction to Roman data reduction tools, learning how to work with the ASDF file format, and using visualization and simulation tools such as Jdaviz (image visualization), Pandeia (Exposure Time Calculator), RIST (Roman Interactive Sensitivity Tool), STIPS (Space Telescope Image Product Simulator), and WebbPSF for Roman (PSFs simulator). Attendees will also learn how to access and analyze state-of-the-art Roman simulations from the Open Universe project (Troxel et al. 2023), which includes simulated wide-field and time-domain Roman data, as well as how to simulate their own data using Roman simulation tools

This course is aimed at astronomers and scientists at all stages of their education and careers. A basic knowledge of Python and familiarity with astronomical data concepts (e.g., data reduction, photometry) is expected. Prior experience with science platforms, Jupyter Notebooks, or the Roman mission is not required.

This workshop requires registration. Participants will need personal computers and should set up their accounts in advance with help from the workshop organizers. A group list will be compiled approximately one month before the workshop to distribute software requirements and facilitate collaborative troubleshooting.

NASA’s Nancy Grace Roman Space Telescope, scheduled for launch by October 2026, will revolutionize astronomy with its widefield slitless spectroscopy capabilities. This technique captures spectra from every object in the field of view, enabling detailed studies of stars, galaxies, black holes, and the large-scale structure of the universe. As the mission approaches, the scientific community must be prepared to effectively handle and analyze this data, with the first call for proposals anticipated in fall 2025.

This session is the first part of a Roman spectroscopic data challenge, and offers a gentle introduction to slitless spectroscopy, with a focus on the Roman Space Telescope's spectroscopic capabilities. This data challenge aims to:
1) Familiarize the community with Roman's powerful spectroscopic capabilities.
2) Develop, utilize, and enhance data simulation and analysis methods, including combining spectroscopy and imaging data, and using a variety of postprocessing techniques.
3) Train and foster collaborations among future users of Roman.

The NASA Town Hall session will provide an opportunity for the Astrophysics science community to interact with members of the leadership team and staff of the Astrophysics Division (APD) of NASA’s Science Mission Directorate. A presentation on the state of APD will precede an opportunity for audience questions. Topics to be addressed in the Town Hall session include scientific accomplishments, current programmatic milestones and direction, and NASA’s progress towards implementing the recommendations identified in the Astro2020 Decadal Survey: Pathways to Discovery in Astronomy and Astrophysics for the 2020s.

The Nancy Grace Roman Space Telescope is NASA's next flagship mission in astrophysics. The Roman Project Infrastructure Teams (PITs) develop and maintain the infrastructural tools and capabilities needed to address the mission objectives and to support community science collaborations, in close collaboration with the Roman project and partnering with the Roman Science Centers at IPAC and STScI. At this splinter meeting, the Roman PITs will present detailed work plans and deliverables. This will inform the community about the tools being developed by the PITs for Roman science, and enable the PITs to benefit from community input.

The Roman PITs competitively selected by NASA are: "Cosmology with the Roman High Latitude Imaging Survey", "Project Infrastructure for the Roman Galaxy Redshift Survey", "A Roman Project Infrastructure Team to Support Cosmological Measurements with Type Ia Supernovae", "The Roman Galactic Exoplanet Survey Project Infrastructure Team", and "RAPID: Roman Alerts Promptly from Image Differencing."

Presentations:

• Cosmology with the Roman High Latitude Imaging Survey (Olivier Dore)
• The Roman Galactic Exoplanet Survey Project Infrastructure Team (Scott Gaudi)
• RAPID: Roman Alerts Promptly from Image Differencing (Mansi Kasliwal)
• A Roman Project Infrastructure Team to Support Cosmological Measurements with Type Ia Supernovae (Daniel Scolnic)
• Project Infrastructure for the Roman Galaxy Redshift Survey (Yun Wang)

https://roman.ipac.caltech.edu/mtgs/cpp_aas245_splinter.html

In preparation for the operational phase of the Nancy Grace Roman Space Telescope, NASA has created the Coronagraph Community Participation Program (CPP) to prepare for and execute Coronagraph Instrument technology demonstration observations. The Coronagraph Instrument will provide the first-ever, in-space demonstrations of multiple key technologies that will be required by any future mission whose goals include the direct imaging and characterization of rocky planets in the habitable zones of nearby, sun-like stars, such as the Habitable Worlds Observatory (HWO), including ultra-precise wavefront sensing and control, and the use of large-format deformable mirrors in space. The Roman Coronagraph Instrument will not be sensitive to terrestrial planets, but will be capable of imaging giant planets in reflected, visible light, with potential sensitivity to true Jovian analogues. Additional, planned Coronagraph targets include imaging of exozodiacal dust and disks in visible wavelengths.

The CPP is composed of 7 small, US-based teams, selected competitively via the Nancy Grace Roman Space Telescope Research and Support Participation Opportunity, members of the Roman Project Team, and international partner teams from ESA, JAXA, CNES, and the Max Planck Institute for Astronomy. The primary goals of the CPP are to prepare target, calibration, and reference star databases; to generate simulation and observation planning tools; and to implement the data reduction software for the execution of the Coronagraph Instrument observation phase. A second round of CPP teams is expected to be solicited in the upcoming D.14 ROSES call in early 2025.

In this session, we will present the current status of the Coronagraph Instrument and planned, next steps before launch. The CPP will review its current status and describe plans and development timelines up through the nominal mission launch date (October 2026). A particular emphasis will be placed on current and planned tool development along with publicly available resources for the broad community. We will also present the results of the CPP Community Interest Survey, which solicited input from the broader astronomical community on CPP goals and the prioritization of planned Coronagraph Instrument observing sequences.

Additionally, the session will include discussion of what we can expect to learn from the Roman Coronagraph that will be directly relevant to the development of HWO, as well as plans for developing and prioritizing observation sequences that directly inform future exoplanet imaging missions. The session will provide community members interested in joining or working with the CPP and opportunity to pose questions directly to current CPP participants.

The Space Telescope Science Institute (STScI) serves the astronomical community through the operation of multiple NASA flagship missions including the Hubble, Webb, and Roman Space Telescopes, the development of advanced data and science archives, including Kepler and TESS, and the dissemination of astronomical information to the broadest public audiences. Offering this breadth of resources to help the scientific community advance, STScI provides support and the primary user interface for Hubble, Webb and Roman. STScI will contribute to a wide range of workshops, science sessions, splinter meetings, and exhibits throughout the meeting.

The STScI Town Hall will serve as the center piece for our AAS 245 presence. We will report on the status of our existing and upcoming missions and describe new opportunities designed to advance astrophysics through the 2020s.

The Nancy Grace Roman Space Telescope is a NASA flagship mission planned for launch no later than May 2027. The Roman Space Telescope will perform breakthrough science in dark energy cosmology, exoplanet microlensing, and NIR sky surveys with its Wide Field Instrument. Roman will also feature the Coronagraph Instrument (CGI), a technology demonstration that will directly image and take spectra of exoplanetary systems using several novel technologies together for the first time in space. This session will cover the status of the project and upcoming opportunities for community involvement in planning and executing the science and technology demonstration aspects of Roman.

The NASA Nancy Grace Roman Space Telescope (Roman) and the Vera C. Rubin Observatory Legacy Survey of Space and Time (Rubin), will transform our view of the wide-field sky, with similar sensitivities, but complementary in wavelength, spatial resolution, and time domain coverage. A number of science topics can be uniquely addressed considering Roman and Rubin synergies in observing strategy, data products and archiving, joint analysis, and community engagement. 

With both surveys coming online soon, now is the time to start developing concrete and implementable plans. This AAS Splinter Session aims to bring together the Roman and Rubin community to provide an updated look at possible synergies, with a specific focus on the data sets themselves. The session will consider the most impactful strategies for co-processing the data from both observatories. Topics may include, but are not limited to, simple catalog matching, joint pixel-level processing, and combining time domain data sets. The format will include a combination of both talks and open space for discussion. The intention is to lay the ground-work for future workshops and planning activities within the community to ensure these ideas can become a reality.

With a Wide Field Instrument (WFI) delivering Hubble-like resolution over roughly 100 times the instantaneous area, and an observatory designed to enable large-area surveys nearly three orders of magnitude faster than HST, the Nancy Grace Roman Space Telescope will produce expansive surveys that transform our understanding of dark energy, dark matter, galaxies, and exoplanets. In order to help plan for and take full advantage of the Roman surveys, as well as test data reduction and analysis algorithms currently being developed, it is essential to create detailed simulated Roman photometric, morphological and spectroscopic datasets. Roman will launch in late 2026 with data products publicly available in early 2027, making the availability and coordination of simulated Roman data in the community extremely timely. In that spirit, the Roman Simulations Working Group has recently formed with the goal of providing a forum to the community to coordinate simulation efforts and discussion of simulated data products and tools. This session will have a short introduction to the Simulations Working Group scope and goals and will bring together observers and theorists to discuss existing Roman simulation resources and plan for additional simulations to maximize the scientific return from Roman’s Core Community, Galactic Plane, and General Astrophysics surveys.

The Nancy Grace Roman Space Telescope, scheduled for launch by May 2027, is poised to revolutionize time-domain astrophysics (TDA). A cornerstone of its mission is the High-Latitude Time Domain Survey (HLTDS), aimed at observing Type Ia supernovae (SNe Ia) for cosmological measurements. Beyond SNe Ia, Roman will explore a broad range of phenomena including other supernova types, tidal disruption events (TDEs), and active galactic nuclei (AGN), as highlighted by numerous submitted white papers. Closer to home there are also studies of Solar System objects and stellar variables, and the early low latitude survey.

Three Project Infrastructure Teams (PITs) and teams at the Science Operations Center (SOC) and Science Support Center (SSC), along with a Wide-Field Science (WFS) team, are developing the necessary infrastructure to support Roman’s TDA capabilities.

To bring the time domain aspects of these different groups together we recently formed the working group STRIDE (Strategic Time-domain Research and Infrastructure Development for Roman Exploration). Through this session we would like to introduce the group to AAS members, seek more diverse participation, as well as feedback on collaborative and complementary possibilities.

Session Objectives:
- Showcase Innovative/proposed Capabilities: Highlight the unique features and products of the Roman Telescope's rapid response, supernova detection, and time domain analysis systems based on simulated data.
- Collaborative Opportunities: Foster collaboration among researchers by discussing data sharing, joint projects, and synergistic efforts on topics like PSF-matching, image-differencing, template construction, source detection, catalog matching, and forced photometry.
- Scientific Breakthroughs: Present advancements and potential discoveries that will be enabled by the Roman Telescope, emphasizing its future impact on the field of astrophysics.
- Future Directions: Explore future research directions and potential enhancements to maximize the scientific yield of the Roman Telescope.

Presentations:

• Fast Transient Science with the Roman Space Telescope (Daniel Perley)
  
• Exploring the Solar System with the Roman Space Telescope (Bryan Holler)
  
• The Future of SN Ia Cosmology with the Roman Space Telescope (Rebekah Hounsell)
  
• Galactic Variability with the Roman Space Telescope (Kishalay De)
  

US science agencies increasingly emphasize open-source science -- accelerating scientific progress by open sharing of data, software, and knowledge. NASA's Astrophysics Division plans to host large datasets from its science missions in the cloud, and to provide cloud-based analysis capabilities for the science community. Petabytes of data from NASA’s Roman telescope, launching in 2027, will be publicly available in this way. This session will feature a panel of speakers to discuss how the Astrophysics Division is working with others within NASA and in the science community to facilitate data sharing, and to ensure that development of robust reusable open-source software and other products is appropriately funded, acknowledged, and rewarded.

Presentations:

• Open science in the Astrophysics Research Program (Roopesh Ojah)
• Enabling Open Science across NASA's Science Mission Directorate (Alessandra Aloisi)
• Open science with the Roman Space Telescope (Julie McEnery)
• Open science in the cloud: developing a platform for multi-mission analysis (Linda Sparke)