Communities
People & Pages
Collections
Post has attachment
Public
A New Supernova Over Munich | ESO
On April 26, 2018, the ESO Supernova Planetarium & Visitor Center was officially inaugurated. The center, located at European Southern Observatory (ESO) Headquarters in Garching (near Munich), Germany provides visitors with an immersive experience of astronomy in general, along with ESO-specific scientific results, projects, and technological breakthroughs. All activities in the ESO Supernova will be free of charge during 2018, and shows and other events can be booked online.
This video is available in 4K UHD.
ESO Supernova Planetarium & Visitor Center
https://supernova.eso.org
The ESOcast Light is a series of short videos bringing you the wonders of the Universe in bite-sized pieces.
Credit: European Southern Observatory (ESO)
Duration: 1 minute, 15 seconds
Release Date: May 7, 2018
+Petr Horálek
+European Southern Observatory (ESO)
+DLR, German Aerospace Center
+Deutsches Zentrum für Luft- und Raumfahrt (DLR)
#NASA #ESO #Astronomy #Science #Space #Supernova #Star #Nova #Dwarf #V392Persei #Cosmos #Universe #Astrophotography #Photography #Planetarium #Munich #München #Garching #Germany #Deutschland #Europe #STEM #Education #4K #UHD #HD #Video
On April 26, 2018, the ESO Supernova Planetarium & Visitor Center was officially inaugurated. The center, located at European Southern Observatory (ESO) Headquarters in Garching (near Munich), Germany provides visitors with an immersive experience of astronomy in general, along with ESO-specific scientific results, projects, and technological breakthroughs. All activities in the ESO Supernova will be free of charge during 2018, and shows and other events can be booked online.
This video is available in 4K UHD.
ESO Supernova Planetarium & Visitor Center
https://supernova.eso.org
The ESOcast Light is a series of short videos bringing you the wonders of the Universe in bite-sized pieces.
Credit: European Southern Observatory (ESO)
Duration: 1 minute, 15 seconds
Release Date: May 7, 2018
+Petr Horálek
+European Southern Observatory (ESO)
+DLR, German Aerospace Center
+Deutsches Zentrum für Luft- und Raumfahrt (DLR)
#NASA #ESO #Astronomy #Science #Space #Supernova #Star #Nova #Dwarf #V392Persei #Cosmos #Universe #Astrophotography #Photography #Planetarium #Munich #München #Garching #Germany #Deutschland #Europe #STEM #Education #4K #UHD #HD #Video
Add a comment...
Post has attachment
Public
Nova over Supernova | ESO
In an astronomically unlikely coincidence, a star exploded as a nova in the sky over the Supernova Planetarium & Visitor center in Munich, Germany, less than a week after its inauguration. An image of the dwarf nova V392 Persei was captured by European Southern Observatory (ESO) photo ambassador Petr Horálek on May 2, 2018. It shows a wide angle view of the evening sky over the ESO Supernova, looking west-northwest.
The position of the nova over the ESO Supernova is marked on the wide view with an insert showing a zoomed view of the area taken with same camera but using a different lens. In this image the nova is easily identifiable due to its typical orange color.
Dwarf novae occur as a result of a white dwarf star accreting material from its lower mass, binary companion. The material from the disc is compressed as it is transferred to the surface of the white dwarf where it is then heated and ignites into an very powerful (and bright) explosion. The case of nova V392 Persei is, actually, a much rarer and more brilliant event. There has only been one occurrence in the history of dwarf novae observations where a star has transitioned to a fully fledged and much brighter nova. This was V1213 Centauri in 2009 and now we have the second such event, V392 Persei.
The image is symbolic as the ESO Supernova building is designed to look like a double star system, very similar to the one involving dwarf nova V392 Persei, which would eventually result in one of the stars exploding as a supernova in a brilliant flash of light—hence the center’s name.
Credit: ESO/P. Horálek
Release Date: May 7, 2018
+Petr Horálek
+European Southern Observatory (ESO)
+DLR, German Aerospace Center
+Deutsches Zentrum für Luft- und Raumfahrt (DLR)
#NASA #ESO #Astronomy #Science #Space #Supernova #Star #Nova #Dwarf #V392Persei #Cosmos #Universe #Astrophotography #Photography #Munich #München #Garching #Germany #Deutschland #Europe #STEM #Education
In an astronomically unlikely coincidence, a star exploded as a nova in the sky over the Supernova Planetarium & Visitor center in Munich, Germany, less than a week after its inauguration. An image of the dwarf nova V392 Persei was captured by European Southern Observatory (ESO) photo ambassador Petr Horálek on May 2, 2018. It shows a wide angle view of the evening sky over the ESO Supernova, looking west-northwest.
The position of the nova over the ESO Supernova is marked on the wide view with an insert showing a zoomed view of the area taken with same camera but using a different lens. In this image the nova is easily identifiable due to its typical orange color.
Dwarf novae occur as a result of a white dwarf star accreting material from its lower mass, binary companion. The material from the disc is compressed as it is transferred to the surface of the white dwarf where it is then heated and ignites into an very powerful (and bright) explosion. The case of nova V392 Persei is, actually, a much rarer and more brilliant event. There has only been one occurrence in the history of dwarf novae observations where a star has transitioned to a fully fledged and much brighter nova. This was V1213 Centauri in 2009 and now we have the second such event, V392 Persei.
The image is symbolic as the ESO Supernova building is designed to look like a double star system, very similar to the one involving dwarf nova V392 Persei, which would eventually result in one of the stars exploding as a supernova in a brilliant flash of light—hence the center’s name.
Credit: ESO/P. Horálek
Release Date: May 7, 2018
+Petr Horálek
+European Southern Observatory (ESO)
+DLR, German Aerospace Center
+Deutsches Zentrum für Luft- und Raumfahrt (DLR)
#NASA #ESO #Astronomy #Science #Space #Supernova #Star #Nova #Dwarf #V392Persei #Cosmos #Universe #Astrophotography #Photography #Munich #München #Garching #Germany #Deutschland #Europe #STEM #Education
Add a comment...
Post has shared content
Public
Simeis 147: Supernova Remnant
Explanation: It's easy to get lost following intricate filaments in this detailed image of faint supernova remnant Simeis 147. Also cataloged as Sharpless 2-240 it goes by the popular nickname, the Spaghetti Nebula. Seen toward the boundary of the constellations Taurus and Auriga, it covers nearly 3 degrees or 6 full moons on the sky. That's about 150 light-years at the stellar debris cloud's estimated distance of 3,000 light-years. This composite includes image data taken through narrow-band filters, enhancing the reddish emission from ionized hydrogen atoms to trace the shocked, glowing gas. The supernova remnant has an estimated age of about 40,000 years, meaning light from the massive stellar explosion first reached Earth 40,000 years ago. But the expanding remnant is not the only aftermath. The cosmic catastrophe also left behind a spinning neutron star or pulsar, all that remains of the original star's core.
Image Credit & Copyright: Daniel López (El Cielo de Canarias) / IAC
#spaceexploration #nasa #supernova
Explanation: It's easy to get lost following intricate filaments in this detailed image of faint supernova remnant Simeis 147. Also cataloged as Sharpless 2-240 it goes by the popular nickname, the Spaghetti Nebula. Seen toward the boundary of the constellations Taurus and Auriga, it covers nearly 3 degrees or 6 full moons on the sky. That's about 150 light-years at the stellar debris cloud's estimated distance of 3,000 light-years. This composite includes image data taken through narrow-band filters, enhancing the reddish emission from ionized hydrogen atoms to trace the shocked, glowing gas. The supernova remnant has an estimated age of about 40,000 years, meaning light from the massive stellar explosion first reached Earth 40,000 years ago. But the expanding remnant is not the only aftermath. The cosmic catastrophe also left behind a spinning neutron star or pulsar, all that remains of the original star's core.
Image Credit & Copyright: Daniel López (El Cielo de Canarias) / IAC
#spaceexploration #nasa #supernova
Add a comment...
Post has shared content
Companion to a Supernova | Hubble Space Telescope
Image Captured for the First Time
April 26, 2018: In the fading afterglow of a supernova explosion, astronomers using NASA’s Hubble Space Telescope have photographed the first image of a surviving companion to a supernova. This is the most compelling evidence that some supernovas originate in double-star systems. The companion to supernova 2001ig’s progenitor star was no innocent bystander to the explosion—it siphoned off almost all of the hydrogen from the doomed star’s stellar envelope. SN 2001ig is categorized as a Type IIb stripped-envelope supernova, which is a relatively rare type of supernova in which most, but not all, of the hydrogen is gone prior to the explosion. Perhaps as many as half of all stripped-envelope supernovas have companions—the other half lose their outer envelopes via stellar winds.
The Full Story
Seventeen years ago, astronomers witnessed a supernova go off 40 million light-years away in the galaxy called NGC 7424, located in the southern constellation Grus, the Crane. Now, in the fading afterglow of that explosion, NASA's Hubble has captured the first image of a surviving companion to a supernova. This picture is the most compelling evidence that some supernovas originate in double-star systems.
“We know that the majority of massive stars are in binary pairs,” said Stuart Ryder from the Australian Astronomical Observatory (AAO) in Sydney, Australia and lead author of the study. “Many of these binary pairs will interact and transfer gas from one star to the other when their orbits bring them close together.”
The companion to the supernova’s progenitor star was no innocent bystander to the explosion. It siphoned off almost all of the hydrogen from the doomed star’s stellar envelope, the region that transports energy from the star’s core to its atmosphere. Millions of years before the primary star went supernova, the companion’s thievery created an instability in the primary star, causing it to episodically blow off a cocoon and shells of hydrogen gas before the catastrophe.
The supernova, called SN 2001ig, is categorized as a Type IIb stripped-envelope supernova. This type of supernova is unusual because most, but not all, of the hydrogen is gone prior to the explosion. This type of exploding star was first identified in 1987 by team member Alex Filippenko of the University of California, Berkeley.
How stripped-envelope supernovas lose that outer envelope is not entirely clear. They were originally thought to come from single stars with very fast winds that pushed off the outer envelopes. The problem was that when astronomers started looking for the primary stars from which supernovas were spawned, they couldn’t find them for many stripped-envelope supernovas.
“That was especially bizarre, because astronomers expected that they would be the most massive and the brightest progenitor stars,” explained team member Ori Fox of the Space Telescope Science Institute in Baltimore. “Also, the sheer number of stripped-envelope supernovas is greater than predicted.” That fact led scientists to theorize that many of the primary stars were in lower-mass binary systems, and they set out to prove it.
Looking for a binary companion after a supernova explosion is no easy task. First, it has to be at a relatively close distance to Earth for Hubble to see such a faint star. SN 2001ig and its companion are about at that limit. Within that distance range, not many supernovas go off. Even more importantly, astronomers have to know the exact position through very precise measurements.
In 2002, shortly after SN 2001ig exploded, scientists pinpointed the precise location of the supernova with the European Southern Observatory’s Very Large Telescope (VLT) in Cerro Paranal, Chile. In 2004, they then followed up with the Gemini South Observatory in Cerro Pachón, Chile. This observation first hinted at the presence of a surviving binary companion.
Knowing the exact coordinates, Ryder and his team were able to focus Hubble on that location 12 years later, as the supernova’s glow faded. With Hubble’s exquisite resolution and ultraviolet capability, they were able to find and photograph the surviving companion—something only Hubble could do.
Prior to the supernova explosion, the orbit of the two stars around each other took about a year.
When the primary star exploded, it had far less impact on the surviving companion than might be thought. Imagine an avocado pit—representing the dense core of the companion star—embedded in a gelatin dessert—representing the star’s gaseous envelope. As a shock wave passes through, the gelatin might temporarily stretch and wobble, but the avocado pit would remain intact.
In 2014, Fox and his team used Hubble to detect the companion of another Type IIb supernova, SN 1993J. However, they captured a spectrum, not an image. The case of SN 2001ig is the first time a surviving companion has been photographed. “We were finally able to catch the stellar thief, confirming our suspicions that one had to be there,” said Filippenko.
Perhaps as many as half of all stripped-envelope supernovas have companions—the other half lose their outer envelopes via stellar winds. Ryder and his team have the ultimate goal of precisely determining how many supernovas with stripped envelopes have companions.
Their next endeavor is to look at completely stripped-envelope supernovas, as opposed to SN 2001ig and SN 1993J, which were only about 90 percent stripped. These completely stripped-envelope supernovas don’t have much shock interaction with gas in the surrounding stellar environment, since their outer envelopes were lost long before the explosion. Without shock interaction, they fade much faster. This means that the team will only have to wait two or three years to look for surviving companions.
In the future, they also hope to use the James Webb Space Telescope to continue their search.
The paper on this team’s current work was published on March 28, 2018 in the Astrophysical Journal:
http://iopscience.iop.org/article/10.3847/1538-4357/aaaf1e
The Hubble Space Telescope is a project of international cooperation between NASA and ESA (European Space Agency). NASA's Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, conducts Hubble science operations. STScI is operated for NASA by the Association of Universities for Research in Astronomy in Washington, D.C.
Credit: NASA, ESA, S. Ryder (Australian Astronomical Observatory), and O. Fox (STScI)
Release Date: April 26, 2018
+Hubble Space Telescope
+European Space Agency, ESA
+NASA Goddard
#NASA #Hubble #Astronomy #Science #Space #Supernova #Star #SN2001ig #Cosmos #Universe #Telescope #ESA #Goddard #GSFC #STScI #STEM #Education
Image Captured for the First Time
April 26, 2018: In the fading afterglow of a supernova explosion, astronomers using NASA’s Hubble Space Telescope have photographed the first image of a surviving companion to a supernova. This is the most compelling evidence that some supernovas originate in double-star systems. The companion to supernova 2001ig’s progenitor star was no innocent bystander to the explosion—it siphoned off almost all of the hydrogen from the doomed star’s stellar envelope. SN 2001ig is categorized as a Type IIb stripped-envelope supernova, which is a relatively rare type of supernova in which most, but not all, of the hydrogen is gone prior to the explosion. Perhaps as many as half of all stripped-envelope supernovas have companions—the other half lose their outer envelopes via stellar winds.
The Full Story
Seventeen years ago, astronomers witnessed a supernova go off 40 million light-years away in the galaxy called NGC 7424, located in the southern constellation Grus, the Crane. Now, in the fading afterglow of that explosion, NASA's Hubble has captured the first image of a surviving companion to a supernova. This picture is the most compelling evidence that some supernovas originate in double-star systems.
“We know that the majority of massive stars are in binary pairs,” said Stuart Ryder from the Australian Astronomical Observatory (AAO) in Sydney, Australia and lead author of the study. “Many of these binary pairs will interact and transfer gas from one star to the other when their orbits bring them close together.”
The companion to the supernova’s progenitor star was no innocent bystander to the explosion. It siphoned off almost all of the hydrogen from the doomed star’s stellar envelope, the region that transports energy from the star’s core to its atmosphere. Millions of years before the primary star went supernova, the companion’s thievery created an instability in the primary star, causing it to episodically blow off a cocoon and shells of hydrogen gas before the catastrophe.
The supernova, called SN 2001ig, is categorized as a Type IIb stripped-envelope supernova. This type of supernova is unusual because most, but not all, of the hydrogen is gone prior to the explosion. This type of exploding star was first identified in 1987 by team member Alex Filippenko of the University of California, Berkeley.
How stripped-envelope supernovas lose that outer envelope is not entirely clear. They were originally thought to come from single stars with very fast winds that pushed off the outer envelopes. The problem was that when astronomers started looking for the primary stars from which supernovas were spawned, they couldn’t find them for many stripped-envelope supernovas.
“That was especially bizarre, because astronomers expected that they would be the most massive and the brightest progenitor stars,” explained team member Ori Fox of the Space Telescope Science Institute in Baltimore. “Also, the sheer number of stripped-envelope supernovas is greater than predicted.” That fact led scientists to theorize that many of the primary stars were in lower-mass binary systems, and they set out to prove it.
Looking for a binary companion after a supernova explosion is no easy task. First, it has to be at a relatively close distance to Earth for Hubble to see such a faint star. SN 2001ig and its companion are about at that limit. Within that distance range, not many supernovas go off. Even more importantly, astronomers have to know the exact position through very precise measurements.
In 2002, shortly after SN 2001ig exploded, scientists pinpointed the precise location of the supernova with the European Southern Observatory’s Very Large Telescope (VLT) in Cerro Paranal, Chile. In 2004, they then followed up with the Gemini South Observatory in Cerro Pachón, Chile. This observation first hinted at the presence of a surviving binary companion.
Knowing the exact coordinates, Ryder and his team were able to focus Hubble on that location 12 years later, as the supernova’s glow faded. With Hubble’s exquisite resolution and ultraviolet capability, they were able to find and photograph the surviving companion—something only Hubble could do.
Prior to the supernova explosion, the orbit of the two stars around each other took about a year.
When the primary star exploded, it had far less impact on the surviving companion than might be thought. Imagine an avocado pit—representing the dense core of the companion star—embedded in a gelatin dessert—representing the star’s gaseous envelope. As a shock wave passes through, the gelatin might temporarily stretch and wobble, but the avocado pit would remain intact.
In 2014, Fox and his team used Hubble to detect the companion of another Type IIb supernova, SN 1993J. However, they captured a spectrum, not an image. The case of SN 2001ig is the first time a surviving companion has been photographed. “We were finally able to catch the stellar thief, confirming our suspicions that one had to be there,” said Filippenko.
Perhaps as many as half of all stripped-envelope supernovas have companions—the other half lose their outer envelopes via stellar winds. Ryder and his team have the ultimate goal of precisely determining how many supernovas with stripped envelopes have companions.
Their next endeavor is to look at completely stripped-envelope supernovas, as opposed to SN 2001ig and SN 1993J, which were only about 90 percent stripped. These completely stripped-envelope supernovas don’t have much shock interaction with gas in the surrounding stellar environment, since their outer envelopes were lost long before the explosion. Without shock interaction, they fade much faster. This means that the team will only have to wait two or three years to look for surviving companions.
In the future, they also hope to use the James Webb Space Telescope to continue their search.
The paper on this team’s current work was published on March 28, 2018 in the Astrophysical Journal:
http://iopscience.iop.org/article/10.3847/1538-4357/aaaf1e
The Hubble Space Telescope is a project of international cooperation between NASA and ESA (European Space Agency). NASA's Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, conducts Hubble science operations. STScI is operated for NASA by the Association of Universities for Research in Astronomy in Washington, D.C.
Credit: NASA, ESA, S. Ryder (Australian Astronomical Observatory), and O. Fox (STScI)
Release Date: April 26, 2018
+Hubble Space Telescope
+European Space Agency, ESA
+NASA Goddard
#NASA #Hubble #Astronomy #Science #Space #Supernova #Star #SN2001ig #Cosmos #Universe #Telescope #ESA #Goddard #GSFC #STScI #STEM #Education
Add a comment...
Post has attachment
Post has attachment
Public
Evolution of Type IIb Stripped-Envelope Supernova | Hubble
April 26, 2018: This graphic illustrates the scenario for the processes that create a Type IIb stripped-envelope supernova, in which most, but not all, of the hydrogen envelope is lost prior to the primary star’s explosion. The four panels show the interaction between the SN 2001ig progenitor star, which ultimately exploded, and its surviving companion. 1) Two stars orbit each other and draw closer and closer together. 2) The more massive star evolves faster, swelling up to become a red giant. In this late phase of life, it spills most of its hydrogen envelope into the gravitational field of its companion. As the companion siphons off almost all of the doomed star’s hydrogen, it creates an instability in the primary star. 3) The primary star explodes in a supernova. 4) As the supernova’s glow fades, the surviving companion becomes visible to the Hubble Space Telescope. The faint remnant of the supernova, at lower left, continues to evolve but in this case is too faint to be detected by Hubble.
Credit: NASA, ESA, and A. Feild (STScI)
Release Date: April 26, 2018
+Hubble Space Telescope
+European Space Agency, ESA
+NASA Goddard
#NASA #Hubble #Astronomy #Science #Space #Supernova #Star #SN2001ig #Illustration #Cosmos #Universe #Telescope #ESA #Goddard #GSFC #STScI #STEM #Education
April 26, 2018: This graphic illustrates the scenario for the processes that create a Type IIb stripped-envelope supernova, in which most, but not all, of the hydrogen envelope is lost prior to the primary star’s explosion. The four panels show the interaction between the SN 2001ig progenitor star, which ultimately exploded, and its surviving companion. 1) Two stars orbit each other and draw closer and closer together. 2) The more massive star evolves faster, swelling up to become a red giant. In this late phase of life, it spills most of its hydrogen envelope into the gravitational field of its companion. As the companion siphons off almost all of the doomed star’s hydrogen, it creates an instability in the primary star. 3) The primary star explodes in a supernova. 4) As the supernova’s glow fades, the surviving companion becomes visible to the Hubble Space Telescope. The faint remnant of the supernova, at lower left, continues to evolve but in this case is too faint to be detected by Hubble.
Credit: NASA, ESA, and A. Feild (STScI)
Release Date: April 26, 2018
+Hubble Space Telescope
+European Space Agency, ESA
+NASA Goddard
#NASA #Hubble #Astronomy #Science #Space #Supernova #Star #SN2001ig #Illustration #Cosmos #Universe #Telescope #ESA #Goddard #GSFC #STScI #STEM #Education
Add a comment...
Post has attachment
Sure Match: Super Nova-FK Smiltene BJSS - 29.04.2018 - Bet on #SUPERNOVA at 1xBet 1.41 - LATVIA - #Division2 http://www.oddsmeter.com/soccer/latvia/division-2/super-nova-vs-fk-smiltene-bjss/ MORE SURE MATCHES at http://www.oddsmeter.com/sure-matches.aspx
Add a comment...
Wait while more posts are being loaded