Galaxies
... away from our Milky way, with a recession velocity, vr, proportional to their distance d: ...
... away from our Milky way, with a recession velocity, vr, proportional to their distance d: ...
An introduce of the spectrograph of the GALEX
... We use a 24 μm-selected sample containing more than 8000 ...
... We use a 24 μm-selected sample containing more than 8000 ...
Document
... Supernova 1987 A – Same star field seen before supernova and after Supernova explosion ...
... Supernova 1987 A – Same star field seen before supernova and after Supernova explosion ...
The Milky Way
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
The cosmic distance scale
... •Comparison of cepheids in LMC and M31 show that the latter lies 15.3 +/- 0.8 times farther away. Comparison of RR Lyraes give a distance ratio of 15 +/- 1. The PN luminosity function also provides a distance ratio wrt LMC of 15 +/- 1. •The peak in the GCLF can be compared to that of the Milky Way, ...
... •Comparison of cepheids in LMC and M31 show that the latter lies 15.3 +/- 0.8 times farther away. Comparison of RR Lyraes give a distance ratio of 15 +/- 1. The PN luminosity function also provides a distance ratio wrt LMC of 15 +/- 1. •The peak in the GCLF can be compared to that of the Milky Way, ...
Word - Wichita State University
... the moon, planets, the lives of stars, distances in the universe, and other astronomical topics. An average of about 6,000 people attend a public or school program each year. Another popular activity at the Observatory is the monthly photography program. During these programs anyone with a 35mm sing ...
... the moon, planets, the lives of stars, distances in the universe, and other astronomical topics. An average of about 6,000 people attend a public or school program each year. Another popular activity at the Observatory is the monthly photography program. During these programs anyone with a 35mm sing ...
Chapter 15
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
Astro-MilkyWay
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
... This chapter plays three parts in our cosmic drama. First, it introduces the concept of a galaxy. Second, it discusses our home, the Milky Way Galaxy, a natural object of our curiosity. Third, it elaborates our story of stars by introducing us to galaxies, the communities in which stars exist. ...
ppt - SLAC
... Particle acceleration in OB associations Hypothesis: the particle acceleration could occur via the Fermi mechanism in shocks between the stellar winds of hot young stars (“OB stars”) in dense environments. This was predicted (but we’d never heard of it…) : see e.g. “On gamma-ray sources, supernova r ...
... Particle acceleration in OB associations Hypothesis: the particle acceleration could occur via the Fermi mechanism in shocks between the stellar winds of hot young stars (“OB stars”) in dense environments. This was predicted (but we’d never heard of it…) : see e.g. “On gamma-ray sources, supernova r ...
Lec10_ch12_deathofstars
... • Will the Sun end its existence? If so, how? – The Sun will shed its outer layers as a planetary nebula in about 7 billions years. Its remnant white dwarf, with fusion ceased, will dim over the next several billion years ...
... • Will the Sun end its existence? If so, how? – The Sun will shed its outer layers as a planetary nebula in about 7 billions years. Its remnant white dwarf, with fusion ceased, will dim over the next several billion years ...
File - Science Website
... In the Solar System, the inner planets, such as the Earth, contain elements which are eavier than the elements hydrogen and helium. Our star, the Sun, is a medium sized star. If a star is much more massive than the Sun it will eventually swell into a red giant, start to contract, continue to contrac ...
... In the Solar System, the inner planets, such as the Earth, contain elements which are eavier than the elements hydrogen and helium. Our star, the Sun, is a medium sized star. If a star is much more massive than the Sun it will eventually swell into a red giant, start to contract, continue to contrac ...
SGL 9 NGC Galaxy magnitude 9/10 observing challenge Up for
... Object 3 – Leo triplet (Taki page 50) No not the famous one. Look half way between delta and theta Leo and then a fraction left. This group NGC3605 / NGC 3607 and NGC 3608 are part of the Leo II group of galaxies. NGC 3605 is however in the background and NGC 3607/8 (both magnitude 9) are interactin ...
... Object 3 – Leo triplet (Taki page 50) No not the famous one. Look half way between delta and theta Leo and then a fraction left. This group NGC3605 / NGC 3607 and NGC 3608 are part of the Leo II group of galaxies. NGC 3605 is however in the background and NGC 3607/8 (both magnitude 9) are interactin ...
the printable Observing Olympics Object Info Sheet in pdf
... NGC6572 – A very bright 8.1 magnitude Planetary Nebula, located in Ophiuchus and discovered in 1825 by Friedrich George Wilhelm Von Struve. Visually at low power it will appear as a colored star but higher magnification will reveal its disk. It has a very high surface brightness and some observers r ...
... NGC6572 – A very bright 8.1 magnitude Planetary Nebula, located in Ophiuchus and discovered in 1825 by Friedrich George Wilhelm Von Struve. Visually at low power it will appear as a colored star but higher magnification will reveal its disk. It has a very high surface brightness and some observers r ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... Black-and-white image of field as observed in 2002 Illustration of how Andromeda stars move relative to distant background galaxies extrapolated 30,000 years into the ...
... Black-and-white image of field as observed in 2002 Illustration of how Andromeda stars move relative to distant background galaxies extrapolated 30,000 years into the ...
The Dynamics of the Galaxies in the Local Group
... Black-and-white image of field as observed in 2002 Illustration of how Andromeda stars move relative to distant background galaxies, extrapolated 30,000 years into the ...
... Black-and-white image of field as observed in 2002 Illustration of how Andromeda stars move relative to distant background galaxies, extrapolated 30,000 years into the ...
USRA - MSU Solar Physics
... Gamma ray bursts (GRBs) are the most energetic phenomena in the universe with the ability to outshine an entire galaxy one-thousand fold! As indicators of the deaths of the most massive stars, they provide insight into the creation of blackholes from stellar progenitors. This exciting field, however ...
... Gamma ray bursts (GRBs) are the most energetic phenomena in the universe with the ability to outshine an entire galaxy one-thousand fold! As indicators of the deaths of the most massive stars, they provide insight into the creation of blackholes from stellar progenitors. This exciting field, however ...
STEPHAN`S QUINTET
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
observing the universe
... A galaxy is an assembly of between a billion (109) and a hundred billion (1011) stars. There is often a large amount of dust and gas intermingled, all held together by gravity. The Sun and Earth are in the Milky Way Galaxy. Galaxies have many different characteristics, but the easiest way to classif ...
... A galaxy is an assembly of between a billion (109) and a hundred billion (1011) stars. There is often a large amount of dust and gas intermingled, all held together by gravity. The Sun and Earth are in the Milky Way Galaxy. Galaxies have many different characteristics, but the easiest way to classif ...
The Southern Fall PDF - Treasures of the Southern Sky
... its center. Most astronomers think that galaxies grow by merging with other galaxies, in a process called hierarchical galaxy formation. Over time, this should create large bulges in the centers of spirals. Recent research, however, has suggested that bulgeless, or purely disk-like spiral galaxies s ...
... its center. Most astronomers think that galaxies grow by merging with other galaxies, in a process called hierarchical galaxy formation. Over time, this should create large bulges in the centers of spirals. Recent research, however, has suggested that bulgeless, or purely disk-like spiral galaxies s ...
eng_gw150914
... tie is registered gravitational signal in Rome and neutrino signal LSD from SN1987A is not possible, because this results in the calculations for energy hundreds of times (2400 times) greater than the energy of gravitational radiation at a standard collapse of stars, but this can not stop us in tryi ...
... tie is registered gravitational signal in Rome and neutrino signal LSD from SN1987A is not possible, because this results in the calculations for energy hundreds of times (2400 times) greater than the energy of gravitational radiation at a standard collapse of stars, but this can not stop us in tryi ...
Galaxies - Mike Brotherton
... Measuring the Mass of the Black Hole in the Center of the Milky Way By following the orbits of individual stars near the center of the Milky Way, the mass of the central black hole could be determined to be ~ 2.6 million solar masses. ...
... Measuring the Mass of the Black Hole in the Center of the Milky Way By following the orbits of individual stars near the center of the Milky Way, the mass of the central black hole could be determined to be ~ 2.6 million solar masses. ...
Supermassive black holes
... Edwin Hubble used observations of _______ to determine the distance to the ...
... Edwin Hubble used observations of _______ to determine the distance to the ...
Astrophysics Questions (DRAFT)
... 123. What is the di erence between a \tube" orbit and a \box" orbit and how are the latter helpful in building galaxies? 124. What is violent relaxation? How does the phase space distribution function it produces di er from that of an isothermal gas? 125. A globular cluster at a distance of 10 kpc, ...
... 123. What is the di erence between a \tube" orbit and a \box" orbit and how are the latter helpful in building galaxies? 124. What is violent relaxation? How does the phase space distribution function it produces di er from that of an isothermal gas? 125. A globular cluster at a distance of 10 kpc, ...
Robert_Minchin_Galaxies_2011_REU
... at emission and absorption lines from stars and star-forming regions, or from the gas in the ISM. • Dynamics for spiral and irregular galaxies are often measured using the 21-cm line of neutral hydrogen. • For elliptical and spheroidal galaxies, which are gas poor, velocity dispersions from stellar ...
... at emission and absorption lines from stars and star-forming regions, or from the gas in the ISM. • Dynamics for spiral and irregular galaxies are often measured using the 21-cm line of neutral hydrogen. • For elliptical and spheroidal galaxies, which are gas poor, velocity dispersions from stellar ...
7 November 2012 X-ray Astrophysics
... The Discovery of X-rays X-radiation was discovered in 1895 by Wilhelm Röntgen, a German physics professor at the University of Würzburg, and for this he was awarded the first Nobel Prize for physics, in 1901. The (originally temporary) name of ‘X-rays’ reflects their unknown and mysterious nature at ...
... The Discovery of X-rays X-radiation was discovered in 1895 by Wilhelm Röntgen, a German physics professor at the University of Würzburg, and for this he was awarded the first Nobel Prize for physics, in 1901. The (originally temporary) name of ‘X-rays’ reflects their unknown and mysterious nature at ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.