Astronomers using NASA's Hubble Space Telescope captured the quick, fading celebrity status of a supernova, the self-detonation of a star. The Hubble snapshots have been assembled into a telling movie of the titanic stellar blast disappearing into oblivion in the spiral galaxy NGC 2525, located 70 million light-years away.
Hubble began observing SN 2018gv in February 2018, after the supernova was first detected by amateur astronomer Koichi Itagaki a few weeks earlier in mid-January. Hubble astronomers were using the supernova as part of a program to precisely measure the expansion rate of the universe—a key value in understanding the physical underpinnings of the cosmos. The supernova serves as a milepost maker to measure galaxy distances, a fundamental value needed for measuring the expansion of space.
The supernova appears as a blazing star located on the galaxy's outer edge in the lower left portion of the frame. It initially outshines the brightest stars in the galaxy before fading out of sight. The time-lapse video consists of observations taken from February 2018 to February 2019.
Credits
NASA, ESA, and A. Riess (STScI/JHU) and the SH0ES teamAcknowledgment: M. Zamani (ESA/Hubble)
| About The Object | |
|---|---|
| Object Name | NGC 2525 |
| Object Description | Supernova |
| R.A. Position | 08:05:35.15 |
| Dec. Position | -11:25:58.35 |
| Constellation | Puppis |
| Distance | 71 million light-years |
| Dimensions | Image is 2.42 arcmin across (about 50,000 light-years) |
| About The Data | |
| Data Description | The HST observations include those from program (A. Riess). |
| Instrument | WFC3/UVIS; WFC3/IR |
| Exposure Dates | Feb 2018 to Feb 2019 |
| Filters | F350LP, F555W, F814W, F160W |
| About The Image | |
| Color Info | These images are a composite of separate exposures acquired by the WFC3 UVIS and IR instruments on the Hubble Space Telescope. Several filters were used to sample narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Cyan: F555W Orange: F814W Red: F160W Luminance: F350LP |
| Compass Image |  |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
