Displaying items by tag: Supernova
Newly discovered SN2021hiz located in galaxy UGC 7513 in the Virgo constellation. Discovered March 30. Type 1a supernova, created by a white dwarf in a binary system. Further brightening is expected before it fades away.
SN2021gmj located in host galaxy NGC 3310 in the constellation of Ursa Major. It was discovered by DLT40 on March 20, 2021. Last reported magnitude was 15.6 as of this entry. It was a Type II supernova, a core collapse supernova.
Messier 1 or the Crab Nebula, a supernova remnant from a star that went supernova in 1054 observed and recorded by Chinese astronomers. Being so bright, it was even visible in the day time. All that remains of the star is a neutron star that spins at 30 times a second that emits pulses of radiation. Such stars are called pulsars as the beam from their magnetic poles causes a pulse of radiation as they rotate. The expanding nebula is illuminated by the radiation outpouring from the pulsar and is expanding at the rate of 1,500 km/s.
Supernova SN2020uxz located in galaxy NGC 514. Type 1a supernova where a white dwarf accretes matter from a binary companion star until it reaches a critical mass and ignites as a supernova, currently shining at 13.8 magnitude.. NGC514 is 80+ million light years away located in Pisces.
Messier 61 is a barred spiral galaxy located in Virgo, and part of the Virgo galaxy cluster. M61 is roughly the same size as our galaxy and is classified as a starburst galaxy that is undergoing a high rate of star formation. On May 6, supernova 2020jfo was discovered in the galaxy making it one of seven that has happened in this galaxy that has been observed this century.
Supernova 2019ein a type 1a is located in the lenticular galaxy NGC5353 in the galaxy cluster of Hickson 68. Imaged the night of May 14, 2019.
Annotated image follows.
Messier 1 is a supernova remnant located in Taurus. In 1054, Chinese astronomers recorded a bright new star that faded away over time. For awhile it was the 2nd brightest object in the night sky after the Moon shining at a magnitude of -7. Venus on occasions will only make it to around -4,8 magnitude. Independently discovered by Charles Messier while looking for Halley's Comet, it gave him the ideal to record non-moving objects that could be mistaken for comets. It is also called the Crab Nebula because of a drawing William Parsons made that he thought it resembled a crab.
At the heart of the nebula is a pulsar, which is the remains of the progenitor star that collapsed down to a neutron star. The highly magnetized star is spinning around 30 times a second that creates the pulses of radiation. The progenitor star was thought to be between 9 and 11 solar masses, the existing star is around 1.4 to 2 solar masses and is compressed down to a size less that 30 kilometers across.
Messier 77 is an active galaxy located in the constellation of Cetus (The Sea Monster). It has an active galactic nucleus and is classified as a type 2 Seyfert galaxy. It is one of the closest of this type of galaxy.
The first supernova detected in this galaxy was discovered on November 24, 2018 by the DLT40 Survey and was given the name of SN2018ivc. It is classified as a type II supernova which is a core collapse of a massive star.
Supernova 2017eaw, discovered on May 14, 2017 by Patrick Wiggins in the aptly named "FireWorks Galaxy", NGC 6946. With 10 supernovas in the last century, it has been quite active in producing supernovas. Months later, near the end of August, the supernova is still quite bright. Revisited it on the nights of August 18-21 to capture this image of it with the RC10 and the Atik 314l+ camera.
NGC 3631 is a face on spiral galaxy located in the constellation of Ursa Major. Located some 50 million light years away, on March 13, Ron Arbour discovered a supernova in this galaxy. Currently around magnitude 15, it is easily visible in the galaxy. It was determined that this was a type 1b supernova, which is a massive star that underwent a core collapse. These are often Wolf-Rayet stars that have blown off most of their outer layers of hydrogen.
Imaged with the ED80CFT refractor, and Atik 314L+ mono ccd, it consists of 9 x 300 second images through R/G/B filters, and 39 x 300 second luminance images.