How do the most massive galaxies constrain theories of
... Why are red galaxies red? o CDM models produce enough old, massive galaxies. the problem is a continuous ‘trickle’ of star formation o there must be some process that shuts off star formation after galaxies have become massive o this process must be rapid, and seems to be connected with the presenc ...
... Why are red galaxies red? o CDM models produce enough old, massive galaxies. the problem is a continuous ‘trickle’ of star formation o there must be some process that shuts off star formation after galaxies have become massive o this process must be rapid, and seems to be connected with the presenc ...
The Hubble Redshift Distance Relation
... “E” buttons to move the telescope until the central red box is centered on one of the galaxies (you can change how quickly the telescope moves - or slews - by clicking on the Slew Rate button). Next, click on Change View to change from the finder scope to the spectrometer. You will see an enlarged v ...
... “E” buttons to move the telescope until the central red box is centered on one of the galaxies (you can change how quickly the telescope moves - or slews - by clicking on the Slew Rate button). Next, click on Change View to change from the finder scope to the spectrometer. You will see an enlarged v ...
Lecture 17: General Relativity and Black Holes
... 25. The galactic north pole is in what constellation? _______ 1. The Sun is located at the center of the Milky Way Galaxy. True or false 2. Shapley overestimated the dimensions of the Milky Way Galaxy because he failed to account for interstellar extinction by dust. True or false 3. The Herschels at ...
... 25. The galactic north pole is in what constellation? _______ 1. The Sun is located at the center of the Milky Way Galaxy. True or false 2. Shapley overestimated the dimensions of the Milky Way Galaxy because he failed to account for interstellar extinction by dust. True or false 3. The Herschels at ...
Earth in the Universe Answer each in your binder or notebook. Date
... A. spiral B. elliptical C. irregular D. oval ...
... A. spiral B. elliptical C. irregular D. oval ...
Galaxies * Island universes
... A Galaxy’s color evolves from bluer, towards redder as stellar population ages, young blue stars die out Galaxy collisions common because they’re usually only 100 or fewer galaxy diameters apart Collisions between galaxies produce irregulars which settle into ellipticals More massive ellipticals hav ...
... A Galaxy’s color evolves from bluer, towards redder as stellar population ages, young blue stars die out Galaxy collisions common because they’re usually only 100 or fewer galaxy diameters apart Collisions between galaxies produce irregulars which settle into ellipticals More massive ellipticals hav ...
White Dwarf Stars
... strong a gravitational field to be supported by even neutron degeneracy pressure → black holes. • The more massive a black hole, the larger its event horizon. • Stellar mass black holes are detected via their X-ray radiation. • A black hole accelerates its surrounding material (often gas from a bina ...
... strong a gravitational field to be supported by even neutron degeneracy pressure → black holes. • The more massive a black hole, the larger its event horizon. • Stellar mass black holes are detected via their X-ray radiation. • A black hole accelerates its surrounding material (often gas from a bina ...
normal and active - FirstLight Astro
... remember stars are stinking far apart, but galaxies are relatively VERY close to each other so they inevitably collide, although their stars almost never collide, their gas & dust do… ...
... remember stars are stinking far apart, but galaxies are relatively VERY close to each other so they inevitably collide, although their stars almost never collide, their gas & dust do… ...
MS 1512–CB58 - Columbia University Department of Astronomy
... the star formation rate, SFR 40M yr , deduced from the far-UV luminosity L1500 after correcting for a factor of ∼ 7 attenuation by dust extinction. This and other empirical properties we have delineated will provide constraints to future modelling of such superwinds from starburst galaxies. Compa ...
... the star formation rate, SFR 40M yr , deduced from the far-UV luminosity L1500 after correcting for a factor of ∼ 7 attenuation by dust extinction. This and other empirical properties we have delineated will provide constraints to future modelling of such superwinds from starburst galaxies. Compa ...
The Hubble Space Telescope - the first 10 years
... • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new perspective into our Univ ...
... • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new perspective into our Univ ...
galaxy_physics
... • Usually, kappa = 1 – 2 omega orbits not closed – (Keplerian exception : kappa = omega ellipse with GC @ focus) – Near the sun : omega/kappa = 27/37 km/s/kpc ...
... • Usually, kappa = 1 – 2 omega orbits not closed – (Keplerian exception : kappa = omega ellipse with GC @ focus) – Near the sun : omega/kappa = 27/37 km/s/kpc ...
Wadhurst Astronomical Society Newsletter May 2017
... of the star as it passes behind mountains on the limb of the Moon from several positions at right angle to the path of the Moon and at the same time. These timings are used by reporting centres to refine the position and tilt of the Earth and also to predict Baily’s Beads during a Solar Eclipse wher ...
... of the star as it passes behind mountains on the limb of the Moon from several positions at right angle to the path of the Moon and at the same time. These timings are used by reporting centres to refine the position and tilt of the Earth and also to predict Baily’s Beads during a Solar Eclipse wher ...
not - ISDC
... About myself... ● master in physics at Hamburg University (master thesis on X-ray astronomy) 1996 ● PhD in astrophysics at Hamburg Observatory and at Osservatorio Astronomico di Brera (Milan/Italy) - studying the evolution of distant galaxies (Luminosity Function of BL Lac objects and Seyfert 2 gal ...
... About myself... ● master in physics at Hamburg University (master thesis on X-ray astronomy) 1996 ● PhD in astrophysics at Hamburg Observatory and at Osservatorio Astronomico di Brera (Milan/Italy) - studying the evolution of distant galaxies (Luminosity Function of BL Lac objects and Seyfert 2 gal ...
Research proposal uploaded for ESO fellowship
... Currently, toy models are used to treat supernova feedback, which are parametrized to reproduce the faint-end of the luminosity function (Cole et al. 2000; Guo et al. 2010). These toy models do not take into account key physical conditions, such as the density of the ISM of galaxies or how much ener ...
... Currently, toy models are used to treat supernova feedback, which are parametrized to reproduce the faint-end of the luminosity function (Cole et al. 2000; Guo et al. 2010). These toy models do not take into account key physical conditions, such as the density of the ISM of galaxies or how much ener ...
PH607 – Galaxies
... least 50-100 luminous galaxies within the central 1 Mpc Clusters are gravitationally bound Clusters are filled with hot X-ray gas Only ~20% of galaxies live in clusters, most live in groups or in the “field” But it is hard to draw the line between group and cluster, ~50% of galaxies live in ...
... least 50-100 luminous galaxies within the central 1 Mpc Clusters are gravitationally bound Clusters are filled with hot X-ray gas Only ~20% of galaxies live in clusters, most live in groups or in the “field” But it is hard to draw the line between group and cluster, ~50% of galaxies live in ...
Star Planet - Stony Brook Astronomy
... small details become trivial – For example, when we say that the nearest galaxy is 2 million (2,000,000) light-years away, does it really matter if its actually 2,000,001? ...
... small details become trivial – For example, when we say that the nearest galaxy is 2 million (2,000,000) light-years away, does it really matter if its actually 2,000,001? ...
ASTR 105 Intro Astronomy: The Solar System
... Astronomers see a bright supernova explode in the Andromeda galaxy (the nearest big galaxy in the local group; located 2.6 million ly away). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,00 ...
... Astronomers see a bright supernova explode in the Andromeda galaxy (the nearest big galaxy in the local group; located 2.6 million ly away). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,00 ...
Galaxy Zoo: Pre and post‐workshop information
... Wilson in the US. He took a photo of Andromeda (which can be seen on a clear night with the naked eye). Hubble grouped these galaxies according to similar characteristics. The Galaxy Zoo project (www.galaxyzoo.org) is an example of citizen science whereby the public have an opportunity to contribute ...
... Wilson in the US. He took a photo of Andromeda (which can be seen on a clear night with the naked eye). Hubble grouped these galaxies according to similar characteristics. The Galaxy Zoo project (www.galaxyzoo.org) is an example of citizen science whereby the public have an opportunity to contribute ...
Hubble`s Expansion of the Universe
... of other fuzzy objects in the sky which he knew were not comets. Worried that other comet hunters might be similarly confused, he compiled a list to prevent their misidentification. Messier’s list (where objects are identified by M for Messier, followed by a number, e.g. M51) contained information o ...
... of other fuzzy objects in the sky which he knew were not comets. Worried that other comet hunters might be similarly confused, he compiled a list to prevent their misidentification. Messier’s list (where objects are identified by M for Messier, followed by a number, e.g. M51) contained information o ...
As far as - Sangeeta Malhotra
... Beyond redshifts of 4 — corresponding to times earlier than about 1.5 billion years after the Big Bang — we can measure the distances of all galaxies thanks to a dramatic drop-off in the ultraviolet spectrum of hydrogen known as the “Lyman break.” At such extreme distances, this spectral feature red ...
... Beyond redshifts of 4 — corresponding to times earlier than about 1.5 billion years after the Big Bang — we can measure the distances of all galaxies thanks to a dramatic drop-off in the ultraviolet spectrum of hydrogen known as the “Lyman break.” At such extreme distances, this spectral feature red ...
File 11 - School of Astronomy, IPM
... Galaxy Morphology ...but we haven’t seen the end of visual classification! No matter how good the automated classifications become, the human eye is still better at determining patterns than neural networks (e.g. detecting spiral structure, smoothness) Modern CCD imaging surveys generate vast numbe ...
... Galaxy Morphology ...but we haven’t seen the end of visual classification! No matter how good the automated classifications become, the human eye is still better at determining patterns than neural networks (e.g. detecting spiral structure, smoothness) Modern CCD imaging surveys generate vast numbe ...
Set 2: Nature of Galaxies
... • History: as late as the early 1920’s it was not known that the “spiral nebula” were galaxies like ours • Debate between Shapley (galactic objects) and Curtis (extragalactic, or galaxies) in 1920 highlighted the difficulties distances in astrophysics difficult to measure - Shapley’s inferences base ...
... • History: as late as the early 1920’s it was not known that the “spiral nebula” were galaxies like ours • Debate between Shapley (galactic objects) and Curtis (extragalactic, or galaxies) in 1920 highlighted the difficulties distances in astrophysics difficult to measure - Shapley’s inferences base ...
PH607 – Galaxies
... The aim of this course is to explore the continuing evolution of the universe. The scales examined will range from the structure of individual galaxies up to the geometry of the universe as a whole. ...
... The aim of this course is to explore the continuing evolution of the universe. The scales examined will range from the structure of individual galaxies up to the geometry of the universe as a whole. ...
Gravitational mass
... If the light from one of these stars passes very near the Sun, whose gravity bends the rays, the star will appear higher than it actually is. ...
... If the light from one of these stars passes very near the Sun, whose gravity bends the rays, the star will appear higher than it actually is. ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.