The Dynamics of the Galaxies in the Local Group
... – Milky Way becomes distorted, when Andromeda gets close enough – Bright new regions of star formation appear, as gas gets compressed by the collision – Star formation ceases, as gas and dust are expelled – An elliptical light concentration remains on the night sky, having replaced today’s familiar ...
... – Milky Way becomes distorted, when Andromeda gets close enough – Bright new regions of star formation appear, as gas gets compressed by the collision – Star formation ceases, as gas and dust are expelled – An elliptical light concentration remains on the night sky, having replaced today’s familiar ...
Measuring Astronomical Distances
... Hubble studied the spectra of galaxies and found their distance using the doppler shift in their spectral lines ...
... Hubble studied the spectra of galaxies and found their distance using the doppler shift in their spectral lines ...
Lecture 13 Local group chapter 4 of S+G
... which are dwarf ellipticals and irregulars with low mass; most are satellites of MW, M31 or M33 The gravitational interaction between these systems is complex but the local group is apparently bound. Major advantages – close and bright- all nearby enough that individual stars can be well measured as ...
... which are dwarf ellipticals and irregulars with low mass; most are satellites of MW, M31 or M33 The gravitational interaction between these systems is complex but the local group is apparently bound. Major advantages – close and bright- all nearby enough that individual stars can be well measured as ...
Star formation and internal kinematics of irregular galaxies
... (a few times) the local scale height. In most cases this is a few hundred parsecs. This is the picture that I will proceed with in this thesis; that star formation is a local process, with the same basic physics occuring in independent cells with dimensions between tens of parsecs and a couple of ki ...
... (a few times) the local scale height. In most cases this is a few hundred parsecs. This is the picture that I will proceed with in this thesis; that star formation is a local process, with the same basic physics occuring in independent cells with dimensions between tens of parsecs and a couple of ki ...
EvoluGon of high mass stars Solar-‐type stars end their lives by
... This energy loss can be compensated for by increasing the rate of fusion reac=ons, un=l an Fe core is formed. The only way in which internal energy can be generated in this core is for grav ...
... This energy loss can be compensated for by increasing the rate of fusion reac=ons, un=l an Fe core is formed. The only way in which internal energy can be generated in this core is for grav ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... – Milky Way becomes distorted, when Andromeda gets close enough – Bright new regions of star formation appear, as gas gets compressed by the collision – Star formation ceases, as gas and dust are expelled – An elliptical light concentration remains on the night sky, having replaced today’s famil ...
... – Milky Way becomes distorted, when Andromeda gets close enough – Bright new regions of star formation appear, as gas gets compressed by the collision – Star formation ceases, as gas and dust are expelled – An elliptical light concentration remains on the night sky, having replaced today’s famil ...
Chapter 1: Introduction to Galaxies File - QMplus
... very little gas (and therefore very little dust), so almost all of the visible component is in the form of stars. With so little gas, there is no appreciable star formation, with the result that elliptical galaxies contain almost only old stars. Their colours are therefore red. K-type giant stars do ...
... very little gas (and therefore very little dust), so almost all of the visible component is in the form of stars. With so little gas, there is no appreciable star formation, with the result that elliptical galaxies contain almost only old stars. Their colours are therefore red. K-type giant stars do ...
Estudio de Cúmulos de Galaxias en el Sloan Digital Sky Survey
... two type of mergers: • major mergers: stellar disks -> stellar bulge ...
... two type of mergers: • major mergers: stellar disks -> stellar bulge ...
File 11 - School of Astronomy, IPM
... • NGC New General Catalogue (Dreyer 1888) had 7840 objects, of which ~50% were galaxies • In the 20th century, many catalogs were produced RSA, UGC, RC3 etc. • Nowadays there are automated surveys, e.g. Sloan Digital Sky Survey (SDSS) with tens of hundreds of millions of galaxies Galaxy Zoo or Zoo U ...
... • NGC New General Catalogue (Dreyer 1888) had 7840 objects, of which ~50% were galaxies • In the 20th century, many catalogs were produced RSA, UGC, RC3 etc. • Nowadays there are automated surveys, e.g. Sloan Digital Sky Survey (SDSS) with tens of hundreds of millions of galaxies Galaxy Zoo or Zoo U ...
Powerpoint slides
... Astronomers assume that most, if not all, spiral galaxies look pretty much the same. Therefore, this smaller-looking galaxy is probably a more distant galaxy. It is about five times as small as the larger-looking galaxy, so it is probably about five times farther…about two third of a mile away, on t ...
... Astronomers assume that most, if not all, spiral galaxies look pretty much the same. Therefore, this smaller-looking galaxy is probably a more distant galaxy. It is about five times as small as the larger-looking galaxy, so it is probably about five times farther…about two third of a mile away, on t ...
Summary: Star Formation Near and Far
... other outflows are in fact much more conspicuous properties of newly formed stars than is any evidence for continuing gas infall, and for some years they seemed to contradict the theoretical models in this respect. Now it is clear that infall, outflow, and rotation are all present simultaneously in ...
... other outflows are in fact much more conspicuous properties of newly formed stars than is any evidence for continuing gas infall, and for some years they seemed to contradict the theoretical models in this respect. Now it is clear that infall, outflow, and rotation are all present simultaneously in ...
Starburst Galaxies - Beck-Shop
... to their temperatures that can be as low as 10 K (−263°C). They radiate therefore mainly in the far infrared and microwave regions of the spectrum and so their study had to await the development of suitable detectors and telescopes for those regions. GMCs can be up to 300 ly (100 pc) in size and con ...
... to their temperatures that can be as low as 10 K (−263°C). They radiate therefore mainly in the far infrared and microwave regions of the spectrum and so their study had to await the development of suitable detectors and telescopes for those regions. GMCs can be up to 300 ly (100 pc) in size and con ...
DTU 8e Chap 17 Quasars and Other Active Galaxies
... a galaxy that is only 400 million lightyears away. This pattern is called an Einstein cross. The diffuse image at the center of the Einstein cross is the core of the intervening galaxy. The physical effect that creates these multiple images is the same as that seen for galaxies. ...
... a galaxy that is only 400 million lightyears away. This pattern is called an Einstein cross. The diffuse image at the center of the Einstein cross is the core of the intervening galaxy. The physical effect that creates these multiple images is the same as that seen for galaxies. ...
Recipes for ULX formation: necessary ingredients and garnishments
... Apparently Yes. Many ULXs are found in tidal dwarfs, or colliding galaxies, or dwarf irregular galaxies located in tidally interacting groups. Spectacular examples include galaxies such as the Antennae, the Mice, the Cartwheel, NGC 7714/15, NGC 4485/90, and the M 81/M 82 group. Other bright ULXs are ...
... Apparently Yes. Many ULXs are found in tidal dwarfs, or colliding galaxies, or dwarf irregular galaxies located in tidally interacting groups. Spectacular examples include galaxies such as the Antennae, the Mice, the Cartwheel, NGC 7714/15, NGC 4485/90, and the M 81/M 82 group. Other bright ULXs are ...
The cosmic distance scale
... Use the relation you found in one of the preparatory exercises and the min/max magnitudes of each Cepheid to calculate the observed mean magnitudes. These have to be corrected for interstellar extinction. The light traveling to us from M100 is not just passing through the vacuum of space, some of it ...
... Use the relation you found in one of the preparatory exercises and the min/max magnitudes of each Cepheid to calculate the observed mean magnitudes. These have to be corrected for interstellar extinction. The light traveling to us from M100 is not just passing through the vacuum of space, some of it ...
AUI CA science talk - National Radio Astronomy Observatory
... Distance/modeling: Braatz et al. (in prep) ...
... Distance/modeling: Braatz et al. (in prep) ...
Separating Stars and Galaxies Based on Color
... done by identifying a set of point-like reference stars in order to measure the point-spread-function (psf) induced by the atmosphere and detector. Thus, identifying a pristine sample of stars is essential for weak lensing measurements. The information available for each object consists of both its ...
... done by identifying a set of point-like reference stars in order to measure the point-spread-function (psf) induced by the atmosphere and detector. Thus, identifying a pristine sample of stars is essential for weak lensing measurements. The information available for each object consists of both its ...
ies la arboleda – centro tic - plurilingüe
... (B) - When the universe is 1.000.000.000 years old, these atoms were attracted by gravity to form giant clouds that will become young galaxies. The hydrogen and helium gases began to condense and make the first stars. These stars die and new stars and planets are formed. ...
... (B) - When the universe is 1.000.000.000 years old, these atoms were attracted by gravity to form giant clouds that will become young galaxies. The hydrogen and helium gases began to condense and make the first stars. These stars die and new stars and planets are formed. ...
Supermassive Black Holes and the Growth of Galaxies
... picture of how galaxies form and grow over the lifetime of the Universe. Recent years have seen the emergence of a remarkably successful “standard model” of cosmology, in which most of the mass in the Universe is made up of dark matter for which the only strong interaction is via the gravitational f ...
... picture of how galaxies form and grow over the lifetime of the Universe. Recent years have seen the emergence of a remarkably successful “standard model” of cosmology, in which most of the mass in the Universe is made up of dark matter for which the only strong interaction is via the gravitational f ...
21. Galaxy Evolution Agenda The Monty Hall Problem/Paradox 21.1
... • Schmidt realized that the emission lines belonged to Hydrogen, but they were highly redshifted. • This object is very (> 1010 light years) far away. • other such objects were subsequently discovered • they were called quasi-stellar radio sources or quasars for short ...
... • Schmidt realized that the emission lines belonged to Hydrogen, but they were highly redshifted. • This object is very (> 1010 light years) far away. • other such objects were subsequently discovered • they were called quasi-stellar radio sources or quasars for short ...
Xiao Yang Xia
... low redshift follow Mbulge- MBH relation, i.e., the ratio of the star formation rate and the accretion rate is about several hundred for IR QSOs, but decreases with the central black hole mass. This shows that the tight correlation between the stellar mass and the central black hole mass is preserve ...
... low redshift follow Mbulge- MBH relation, i.e., the ratio of the star formation rate and the accretion rate is about several hundred for IR QSOs, but decreases with the central black hole mass. This shows that the tight correlation between the stellar mass and the central black hole mass is preserve ...
talk.wyse - Johns Hopkins University
... are small, and galaxies like the Milky Way evolve through merging and assimilation of smaller systems. Highest resolution N-body simulations (gravity only) show persistent small-scale substructure, with many more darkmatter subhaloes surviving to the present-day than we see as satellite galaxies aro ...
... are small, and galaxies like the Milky Way evolve through merging and assimilation of smaller systems. Highest resolution N-body simulations (gravity only) show persistent small-scale substructure, with many more darkmatter subhaloes surviving to the present-day than we see as satellite galaxies aro ...
powerpoint - Physics @ IUPUI
... them (1/5th normal). • Voids are about 50-200 million light years across. • The galaxies seem like normal galaxies. • They have normal amounts of metals. • They do tend to have a stronger old population but have normal amounts of metals. • The only real difference is the distribution of ...
... them (1/5th normal). • Voids are about 50-200 million light years across. • The galaxies seem like normal galaxies. • They have normal amounts of metals. • They do tend to have a stronger old population but have normal amounts of metals. • The only real difference is the distribution of ...
First Light Sources at the End of the Dark Ages: Direct
... begun. Thus, near-infrared observations of these dwarfs could reveal strong Lyman ! and He II emission detectable by large ground-based telescopes, and possibly a rest-frame ultraviolet continuum observable from the ground and/or with the JWST. By 2016, the JWST and/or ground-based surveys will reg ...
... begun. Thus, near-infrared observations of these dwarfs could reveal strong Lyman ! and He II emission detectable by large ground-based telescopes, and possibly a rest-frame ultraviolet continuum observable from the ground and/or with the JWST. By 2016, the JWST and/or ground-based surveys will reg ...
Pea galaxy
A Pea galaxy, also referred to as a Pea or Green Pea, might be a type of Luminous Blue Compact Galaxy which is undergoing very high rates of star formation. Pea galaxies are so-named because of their small size and greenish appearance in the images taken by the Sloan Digital Sky Survey (SDSS).Pea Galaxies were first discovered in 2007 by the volunteer users within the forum section of the online astronomy project Galaxy Zoo (GZ).