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Asteroid Institute Unveils Rapid Online Precovery Tool For Searching Multiple Astronomical Datasets in Minutes

Retrieved on:

화요일, 8월 1, 2023

SAN FRANCISCO, Aug. 1, 2023 /PRNewswire/ -- Asteroid Institute, a program of B612 Foundation, announced today the release of a publicly available Precovery service that can both confirm and refine the orbits of asteroids by rapidly searching through a collection of astronomical data that has been curated and hosted on Google Cloud. The service, which runs on the Asteroid Discovery Analysis and Mapping (ADAM) platform and its unified observational dataset, can provide results in a matter of minutes for a task that typically takes astronomers days or months (if starting from scratch) to complete.

Key Points:

Earlier this week, Asteroid Institute scientists found a collection of previously unattributed images of the newly discovered Potentially Hazardous Asteroid (PHA) 2022 SF289 as found by the team at Vera C. Rubin Observatory.
ADAM::Precovery was also used by the Institute to refine the orbits of 28 PHAs tracked on the NASA and ESA Risk Lists.
Finally, the commercial company Karman+ has been working with Asteroid Institute to use precovery in finding observations of Near Earth Asteroids that could be potential targets for space missions.
Within minutes of being notified of its discovery in ATLAS survey data by the Rubin Observatory team, Asteroid Institute engineers recovered additional observations of newly identified potentially hazardous asteroid 2022 SF289 using ADAM's precovery tool.

Asteroid Institute Unveils Rapid Online Precovery Tool For Searching Multiple Astronomical Datasets in Minutes

Retrieved on:

화요일, 8월 1, 2023

SAN FRANCISCO, Aug. 1, 2023 /PRNewswire/ -- Asteroid Institute, a program of B612 Foundation, announced today the release of a publicly available Precovery service that can both confirm and refine the orbits of asteroids by rapidly searching through a collection of astronomical data that has been curated and hosted on Google Cloud. The service, which runs on the Asteroid Discovery Analysis and Mapping (ADAM) platform and its unified observational dataset, can provide results in a matter of minutes for a task that typically takes astronomers days or months (if starting from scratch) to complete.

Key Points:

Earlier this week, Asteroid Institute scientists found a collection of previously unattributed images of the newly discovered Potentially Hazardous Asteroid (PHA) 2022 SF289 as found by the team at Vera C. Rubin Observatory.
ADAM::Precovery was also used by the Institute to refine the orbits of 28 PHAs tracked on the NASA and ESA Risk Lists.
Finally, the commercial company Karman+ has been working with Asteroid Institute to use precovery in finding observations of Near Earth Asteroids that could be potential targets for space missions.
Within minutes of being notified of its discovery in ATLAS survey data by the Rubin Observatory team, Asteroid Institute engineers recovered additional observations of newly identified potentially hazardous asteroid 2022 SF289 using ADAM's precovery tool.

Astronomers just saw a star eat a planet – an astrophysicist on the team explains the first-of-its-kind discovery

Retrieved on:

수요일, 5월 10, 2023

Learning, Solar System, Hydrogen, Zwicky, Light, Research, Chemistry, Aquila, Planet, Time, Astronomy, Dust, Palomar, Crash, Telescope, Color, Zwicky Transient Facility, Phosphorus, Fireworks, ZTF

The star, named ZTF SLRN-2020, is located in the Milky Way galaxy, in the constellation Aquila.

Key Points:

The star, named ZTF SLRN-2020, is located in the Milky Way galaxy, in the constellation Aquila.
Although we only see the effects on the star, not the planet directly, our team is confident that the event we witnessed was a star swallowing its planet.

Finding a flash in the dynamic night sky

To do this, we have been using data from the Zwicky Transient Facility, a telescope located on Palomar Mountain in Southern California.
It takes nightly images of broad swaths of the sky, and astronomers can then compare these images to find stars that change in brightness over time, or what are called astronomical transients.
Finding stars that change in brightness isn’t the challenge – it’s sorting out the cause behind any specific change to a star.

When a star swallows its planets

Interpreting a stellar flash

This is where combining theoretical models with the observational data allowed us to understand what the telescopes captured.
The merging of two stars into a single, bigger star is a dramatic event that throws matter out into the stars’ surroundings.
A large part of my career has focused on modeling the way stellar gas moves and crashes into itself and is expelled in these moments of intense interaction.
My past research suggests that smaller planets – or ones in more-distant orbits that only get consumed once a star has grown massively in size – might be swallowed without a detectable flash.

Learning from the real thing

First, the planet skims across the surface of the star for many years, slowly heating up and expelling material from the star’s atmosphere.
This cloud of dust gives the star a progressively redder color and emits increasing amounts of infrared radiation.
Next week our team will start analyzing data from the James Webb Space Telescope in the hopes of learning about the chemistry of the gas that now surrounds ZTF SLRN-2020.