- ALMA Observatory
... R Sculptoris used to be an average-sized star (like our Sun), but it grew as it aged. It grew a lot, but as it produced no extra heat, it went cold. As its temperature dropped, the star turned redder. This may seem odd, given that in our daily lives we usually associate the color red with hot ...
... R Sculptoris used to be an average-sized star (like our Sun), but it grew as it aged. It grew a lot, but as it produced no extra heat, it went cold. As its temperature dropped, the star turned redder. This may seem odd, given that in our daily lives we usually associate the color red with hot ...
Big Bang
... _____billion years ago___________________. Since gravity was still attracting objects together, the dust and gas from the explosion started to come back together and form the ____galaxies, stars and planets________. Scientists believe that the Earth formed about _____4.5________ billion years ago. ( ...
... _____billion years ago___________________. Since gravity was still attracting objects together, the dust and gas from the explosion started to come back together and form the ____galaxies, stars and planets________. Scientists believe that the Earth formed about _____4.5________ billion years ago. ( ...
Where is the Solar System in the Universe?
... • Look like giant, flat discs with a bulge in the middle with spiral arms flaring out from the center. • These are typically the largest galaxies. ...
... • Look like giant, flat discs with a bulge in the middle with spiral arms flaring out from the center. • These are typically the largest galaxies. ...
Test #4 (Ch. 13-16) ASTR 10 You have 1 hour to take the exam, and
... C. The orbital speeds of stars far from the galactic center are surprisingly high. D. Our view of distant galaxies is often obscured by dark blotches, which are presumably made of dark matter. 26. If we could watch spiral arms from a telescope situated above the Milky Way over 500 million years, wha ...
... C. The orbital speeds of stars far from the galactic center are surprisingly high. D. Our view of distant galaxies is often obscured by dark blotches, which are presumably made of dark matter. 26. If we could watch spiral arms from a telescope situated above the Milky Way over 500 million years, wha ...
galaxy phenomenology
... SDSS images of spiral galaxies, selected according to classifications in NED to be Sa–Sd (including barred types). The images are sorted by absolute magnitude in the horizontal direction, ranging between Mr − 5 log10 h ∼ −18.5 and −22 from left to right, and g − r color in the vertical direction, ra ...
... SDSS images of spiral galaxies, selected according to classifications in NED to be Sa–Sd (including barred types). The images are sorted by absolute magnitude in the horizontal direction, ranging between Mr − 5 log10 h ∼ −18.5 and −22 from left to right, and g − r color in the vertical direction, ra ...
Document
... are large but the mean trends are reliable. Evan Kirby has been developing a technique for determining alpha and Fe for DEIMOS-Keck spectra in a large number of dSph galaxies. This technique is growing in sophistication and will soon measure individual abundances. ...
... are large but the mean trends are reliable. Evan Kirby has been developing a technique for determining alpha and Fe for DEIMOS-Keck spectra in a large number of dSph galaxies. This technique is growing in sophistication and will soon measure individual abundances. ...
Print this PDF
... numbers rather than the aforementioned units, the resulting figure would be impossible to understand or conceptualize. Galaxies are usually separated by spaces that extend over millions of parsecs. These vast spaces are called intergalactic spaces. Despite the ...
... numbers rather than the aforementioned units, the resulting figure would be impossible to understand or conceptualize. Galaxies are usually separated by spaces that extend over millions of parsecs. These vast spaces are called intergalactic spaces. Despite the ...
Galaxies and the Universe
... • The sum of all space, matter, and energy that exists, has existed, or will exist • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
... • The sum of all space, matter, and energy that exists, has existed, or will exist • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
What Can We See in the Night Sky?
... • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
... • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
The Milky Way Galaxy - Academic Computer Center
... Jupiter’s orbit but with a This is called a supermassive mass several million times black hole. Most other galaxies the mass of the Sun. are also thought to have these huge • Since so little light is visible black holes in their centers. from this object it is thought to be a very large black hole. ...
... Jupiter’s orbit but with a This is called a supermassive mass several million times black hole. Most other galaxies the mass of the Sun. are also thought to have these huge • Since so little light is visible black holes in their centers. from this object it is thought to be a very large black hole. ...
IFU observations of the high-z Universe
... • The correlation of Ly-alpha emitters with the distribution of intergalactic gas provides another route to observationally constrain feedback • Based on Adelberger et al (2003) who find that the mean transmission increases close to a QSO – This result is derived from 3 Ly- sources only ...
... • The correlation of Ly-alpha emitters with the distribution of intergalactic gas provides another route to observationally constrain feedback • Based on Adelberger et al (2003) who find that the mean transmission increases close to a QSO – This result is derived from 3 Ly- sources only ...
Chapter 14: The Milky Way Galaxy
... Which do you think is the most plausible interpretation? 1. Both people are the same age but at different distances from you. 2. The people are actually different ages but at the same distance from you. 3. The person that is closer to you is actually the older of the ...
... Which do you think is the most plausible interpretation? 1. Both people are the same age but at different distances from you. 2. The people are actually different ages but at the same distance from you. 3. The person that is closer to you is actually the older of the ...
The Cycle of Star Formation
... light better penetrates the interstellar dust, while the shorter wavelength light is scattered away. The protostars are totally obscured in the optical, but can be detected in the infrared. ...
... light better penetrates the interstellar dust, while the shorter wavelength light is scattered away. The protostars are totally obscured in the optical, but can be detected in the infrared. ...
numerical exercises
... (M3 for cool stars), so the mass-to-light ratio should vary as M/L ~ 1/M3 or 1/M2. The typical star near the Sun is a cool M-dwarf with a mass of only 0.25 M or less, implying a typical mass-to-light ratio for our Galaxy of ~16. Since most stars are probably less massive than that, the actual mass- ...
... (M3 for cool stars), so the mass-to-light ratio should vary as M/L ~ 1/M3 or 1/M2. The typical star near the Sun is a cool M-dwarf with a mass of only 0.25 M or less, implying a typical mass-to-light ratio for our Galaxy of ~16. Since most stars are probably less massive than that, the actual mass- ...
G. Kacprzak "Galaxy-halo and gas connection 0.5 email
... Halo gas is “aware” of the kinematics of the galaxy (pilot study 5 galaxies). ...
... Halo gas is “aware” of the kinematics of the galaxy (pilot study 5 galaxies). ...
tutorial1_2014
... Determine the total foreground extinction in the B- and K-bands towards these objects using the methods discussed in class (partially available through the extinction calculator on same (NED) website, i.e. the (a) the cosecant law by Sandage based on galaxy counts (b) The Galactic HI-column density ...
... Determine the total foreground extinction in the B- and K-bands towards these objects using the methods discussed in class (partially available through the extinction calculator on same (NED) website, i.e. the (a) the cosecant law by Sandage based on galaxy counts (b) The Galactic HI-column density ...
1.1 Stars in the Broader Context of Modern Astro
... largest distances. At present, the record for the most distant known object in the Universe is held not by a galaxy, nor a quasar, but by a gamma-ray burst (GRB) at redshift z ∼ 9.4. A gamma-ray burst is thought to mark the end of a massive and rapidly rotating star, when its core collapses directly ...
... largest distances. At present, the record for the most distant known object in the Universe is held not by a galaxy, nor a quasar, but by a gamma-ray burst (GRB) at redshift z ∼ 9.4. A gamma-ray burst is thought to mark the end of a massive and rapidly rotating star, when its core collapses directly ...
Day-6
... The Milky Way offers clues to galaxy formation. All halo stars have some heavy elements, so at least one prior generation of stars must have existed. Halo objects were formed before interstellar gas was all concentrated into the disk. Later star formation was all in the disk. ...
... The Milky Way offers clues to galaxy formation. All halo stars have some heavy elements, so at least one prior generation of stars must have existed. Halo objects were formed before interstellar gas was all concentrated into the disk. Later star formation was all in the disk. ...
GALAXIES Reading Comprehension
... thought to be nearly as old as the universe itself. Some estimates age the galaxy at over 13 billion years. It is part of a cluster of galaxies known as the Local Group. Two smaller galaxies and a number of dwarf galaxies actually orbit the Milky Way, ...
... thought to be nearly as old as the universe itself. Some estimates age the galaxy at over 13 billion years. It is part of a cluster of galaxies known as the Local Group. Two smaller galaxies and a number of dwarf galaxies actually orbit the Milky Way, ...
ASTR-1020: Astronomy II Course Lecture Notes - Faculty
... A pulsar called Geminga was recently discover with peculiar properties. It has a large proper motion across the sky meaning that it is relatively nearby (probably less than 300 ly). Its pulsation time indicates that it is about 300,000 years old. The supernova that produced Geminga may be the cause ...
... A pulsar called Geminga was recently discover with peculiar properties. It has a large proper motion across the sky meaning that it is relatively nearby (probably less than 300 ly). Its pulsation time indicates that it is about 300,000 years old. The supernova that produced Geminga may be the cause ...
the evolutionary radial distributions of h2 density within spiral and
... Our most massive spiral galaxies are in the bottom region of the EMG´s data. The molecular gas mass decreases for decresing z as in Solomon & Vanden Bout (2005). Only the least massive galaxies and those which are massive but with low starforming efficiencies are still producing molecular gas. Howev ...
... Our most massive spiral galaxies are in the bottom region of the EMG´s data. The molecular gas mass decreases for decresing z as in Solomon & Vanden Bout (2005). Only the least massive galaxies and those which are massive but with low starforming efficiencies are still producing molecular gas. Howev ...
to view poster PDF - Max-Planck
... • to search for more evidence of the interaction between HII regions and ambient clouds. If the natal cloud is affected by the centralized pressure, the denser portions of the bubble would be moving slower so a velocity difference is possibly found with different density tracers if observed with hig ...
... • to search for more evidence of the interaction between HII regions and ambient clouds. If the natal cloud is affected by the centralized pressure, the denser portions of the bubble would be moving slower so a velocity difference is possibly found with different density tracers if observed with hig ...
Week 5 (10/16) – Quiz #11
... the wavelength of peak radiation bear an inverse relation to each other B. The luminosity of a black body is proportional to its temperature raised to the fourth power C. Atoms are capable of absorbing and re-emitting photons D. The energy of a photon is given by the formula: E = mc2 ...
... the wavelength of peak radiation bear an inverse relation to each other B. The luminosity of a black body is proportional to its temperature raised to the fourth power C. Atoms are capable of absorbing and re-emitting photons D. The energy of a photon is given by the formula: E = mc2 ...
Physica 133-11f: Sample Final Exam Here are sample questions for
... 14) How was Edwin Hubble able to use his discovery of a Cepheid in Andromeda to prove that the "spiral nebulae" were actually entire galaxies? A) He used main-sequence fitting to determine the distance to Andromeda and show that it was far outside the Milky Way Galaxy. B) He measured the stellar par ...
... 14) How was Edwin Hubble able to use his discovery of a Cepheid in Andromeda to prove that the "spiral nebulae" were actually entire galaxies? A) He used main-sequence fitting to determine the distance to Andromeda and show that it was far outside the Milky Way Galaxy. B) He measured the stellar par ...