HR Diagram of Messier 80 using Hubble Space Telescope Data
... 8. Optional: Download and reduce the data yourself If you want to create the data set below on your own, follow these directions below. Go to http://hla.stsci.edu/ Click “Enter Site.” Search for M80. Then do an “Advanced Search”. Check off only the WFPC2 instrument. Search for Proposal ID 11233. Two ...
... 8. Optional: Download and reduce the data yourself If you want to create the data set below on your own, follow these directions below. Go to http://hla.stsci.edu/ Click “Enter Site.” Search for M80. Then do an “Advanced Search”. Check off only the WFPC2 instrument. Search for Proposal ID 11233. Two ...
Blowin` in the wind: both `negative` and `positive` feedback in an
... 320 km/s) is consistent with the systemic redshift of the host galaxy (Brusa et al. 2010), and it is interpreted as due to the star formation in the host galaxy. We map the spatial extent of the Hα narrow component by fitting in each spaxels of the datacube the single Gaussian derived from the integr ...
... 320 km/s) is consistent with the systemic redshift of the host galaxy (Brusa et al. 2010), and it is interpreted as due to the star formation in the host galaxy. We map the spatial extent of the Hα narrow component by fitting in each spaxels of the datacube the single Gaussian derived from the integr ...
Name - CLC Charter School
... large transfer of matter and energy, there is a very different kind of star left. This star is called a spinning neutron star. Neutron stars produce radio waves in a steady stream or in random bursts. But if a star is massive enough, it can leave behind something more. For this to happen though, the ...
... large transfer of matter and energy, there is a very different kind of star left. This star is called a spinning neutron star. Neutron stars produce radio waves in a steady stream or in random bursts. But if a star is massive enough, it can leave behind something more. For this to happen though, the ...
Section 4
... Since then, astronomers have discovered more than 100 planets around other stars, and new ones are being discovered all of the time. Most of these new planets are very large, with at least half of the mass of Jupiter. A small planet would be hard to detect because it would have little gravitational ...
... Since then, astronomers have discovered more than 100 planets around other stars, and new ones are being discovered all of the time. Most of these new planets are very large, with at least half of the mass of Jupiter. A small planet would be hard to detect because it would have little gravitational ...
The Celestial Sphere
... Hand, namely the bottom half of the constellation Orion, represents the arm of a great Lakota chief. The gods wanted to punish the Lakota's chief for his selfishness and made the Thunder People rip out his arm. The chief's daughter offered to marry anyone ...
... Hand, namely the bottom half of the constellation Orion, represents the arm of a great Lakota chief. The gods wanted to punish the Lakota's chief for his selfishness and made the Thunder People rip out his arm. The chief's daughter offered to marry anyone ...
stellar_explosions - UT Austin (Astronomy)
... km/sec gives age, which comes out to be about 950 years as it should. See Discovery 21-2 on p. 566. From the observed number of SNe (supernovae) in our own and other galaxies, we expect about 1 SN per 100 years in our Galaxy. But the last one was seen 400 years ago (Tycho’s SN). So we are overdue! H ...
... km/sec gives age, which comes out to be about 950 years as it should. See Discovery 21-2 on p. 566. From the observed number of SNe (supernovae) in our own and other galaxies, we expect about 1 SN per 100 years in our Galaxy. But the last one was seen 400 years ago (Tycho’s SN). So we are overdue! H ...
Measuring the Stars pages 813-820
... Because of parallax, it seems that the star moved, when compared to far away stars, but it did not actually do so. The smaller the parallax, the farther away the star is. ...
... Because of parallax, it seems that the star moved, when compared to far away stars, but it did not actually do so. The smaller the parallax, the farther away the star is. ...
4. Massive Stars and HII Regions
... stars via the collapse of a very massive dense cloud; this implies very high mass accretion rates; observationally one should be able to observe massive discs and outflows from those objects; 2) by coalescence of lower mass stars in extremely dense cluster environments; – Observational evidence seem ...
... stars via the collapse of a very massive dense cloud; this implies very high mass accretion rates; observationally one should be able to observe massive discs and outflows from those objects; 2) by coalescence of lower mass stars in extremely dense cluster environments; – Observational evidence seem ...
Notes
... Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.55 and 1+ solar masses (more massive are brighter) Outflowing winds seen in “P Cygni” profiles Hydrogen abundance l ...
... Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.55 and 1+ solar masses (more massive are brighter) Outflowing winds seen in “P Cygni” profiles Hydrogen abundance l ...
The Stars education kit - Student activities 5-10
... Sirius is the brightest star in the night sky and is part of the constellation Canis Major. It is a blue-white supergiant star about 9 light years away. Alpha Centauri lies in the constellation of Centaurus. It is one of the bright Pointers that point to the Southern Cross. It is the third brightest ...
... Sirius is the brightest star in the night sky and is part of the constellation Canis Major. It is a blue-white supergiant star about 9 light years away. Alpha Centauri lies in the constellation of Centaurus. It is one of the bright Pointers that point to the Southern Cross. It is the third brightest ...
Stellar Parallax
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
Observations of V838 Mon light echo
... In classical novae, hydrogen explosion happens in a layer on a white dwarf surface. A small amount of matter located above being ejected into space has a mass of 1/1000 or 1/10000 solar masses. When the ejected gas expands, its density decreases rapidly, it passes into the optically thin state and g ...
... In classical novae, hydrogen explosion happens in a layer on a white dwarf surface. A small amount of matter located above being ejected into space has a mass of 1/1000 or 1/10000 solar masses. When the ejected gas expands, its density decreases rapidly, it passes into the optically thin state and g ...
Planetary Nebula
... A White Dwarf is about the same size as the Earth, but a mass up to 1.4 stellar masses (this is called the Chandrasekhar limit) if the mass is above this the star will have a high enough energy to restart nuclear fusion. ...
... A White Dwarf is about the same size as the Earth, but a mass up to 1.4 stellar masses (this is called the Chandrasekhar limit) if the mass is above this the star will have a high enough energy to restart nuclear fusion. ...
chapter 2
... instructions you have to follow are given below. • Select a day close to new moon (Amawaka) day. • Cover the face of your torch with a red coloured cellophane paper. • Stand on a stage during observations in order to protect yourself from snakes, poisonous animals and thorny bushes. • Be prepared fo ...
... instructions you have to follow are given below. • Select a day close to new moon (Amawaka) day. • Cover the face of your torch with a red coloured cellophane paper. • Stand on a stage during observations in order to protect yourself from snakes, poisonous animals and thorny bushes. • Be prepared fo ...
Lecture 14: Star Formation
... Stars do not begin the protostar phase with the total mass they will have at the end. They are still accreting mass while collapsing slowly. Mass steadily increases Deuterium burning is an important energy source (even though only 1 H atom in 105 is a deuterium atom. ...
... Stars do not begin the protostar phase with the total mass they will have at the end. They are still accreting mass while collapsing slowly. Mass steadily increases Deuterium burning is an important energy source (even though only 1 H atom in 105 is a deuterium atom. ...
CONSTELLATIONS
... him to hug him. Arcas was afraid and aimed to shoot the bear with his bow. • Just before the arrow struck, Jupiter tossed Callisto and Arcas into the heavens as the constellation Ursa Major (the Great Bear and Bootes, the Bear Warden). • Now Arcas is always next to his mother. ...
... him to hug him. Arcas was afraid and aimed to shoot the bear with his bow. • Just before the arrow struck, Jupiter tossed Callisto and Arcas into the heavens as the constellation Ursa Major (the Great Bear and Bootes, the Bear Warden). • Now Arcas is always next to his mother. ...
Stella Finger Prints
... Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where stars are born and sometimes die. They are mainly made ...
... Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where stars are born and sometimes die. They are mainly made ...
Extrasolar planets Topics to be covered Planets and brown dwarfs
... • Jupiter, for example, is more than a billion times fainter than the Sun. However it could easily be seen at large distances except for… ...
... • Jupiter, for example, is more than a billion times fainter than the Sun. However it could easily be seen at large distances except for… ...
Stellar Explosions
... FACT: Not all stars will end their lives in violent explosions, called supernovae. Only massive stars become ...
... FACT: Not all stars will end their lives in violent explosions, called supernovae. Only massive stars become ...
Scientific Results Summary
... away and captured the earliest and most detailed view of a collapsing gas cloud turning into a star. Their observation marked the first detection of X-rays and showed that gravity alone is not the only force shaping young stars. Another team of scientists looked at a massive protostar 1,500 light ye ...
... away and captured the earliest and most detailed view of a collapsing gas cloud turning into a star. Their observation marked the first detection of X-rays and showed that gravity alone is not the only force shaping young stars. Another team of scientists looked at a massive protostar 1,500 light ye ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.