powerpoint - Physics @ IUPUI
... • Constraints on galaxy clustering (more clustering means larger voids, less means smaller). • Sheds some insight into galaxy evolution. • It is amazing how much we can learn from looking at places with so little. ...
... • Constraints on galaxy clustering (more clustering means larger voids, less means smaller). • Sheds some insight into galaxy evolution. • It is amazing how much we can learn from looking at places with so little. ...
The cosmic distance scale
... individual Cepheids can be resolved as far away as the Virgo cluster of galaxies. Cepheids have periods from a few to about 70 days and this depends on their absolute magnitudes. In Table 1 HST observations of six Cepheids are listed. They were observed at 12 epochs (times) in order to find their pe ...
... individual Cepheids can be resolved as far away as the Virgo cluster of galaxies. Cepheids have periods from a few to about 70 days and this depends on their absolute magnitudes. In Table 1 HST observations of six Cepheids are listed. They were observed at 12 epochs (times) in order to find their pe ...
Quasars- The Brightest Black Holes
... In 1962 an opportunity arose for a much clearer determination of the position of one of these powerful but as yet unidentified sources, 3C273, when it would be eclipsed by the Moon three times - in May, August and October. The advantage of such an event is that we always know the position of the Mo ...
... In 1962 an opportunity arose for a much clearer determination of the position of one of these powerful but as yet unidentified sources, 3C273, when it would be eclipsed by the Moon three times - in May, August and October. The advantage of such an event is that we always know the position of the Mo ...
Birth, Age and the Future of the Universe
... first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence receding from us, – yet faster th ...
... first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence receding from us, – yet faster th ...
ASTRO 1050 The Structure of the Milky Way Galaxy
... halo, a larger cloud of stars that surround the entire Galaxy. The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas and dust. The dust blocks out light from distant stars, and makes it difficult to see most of the Galaxy, especially the bulge and parts of the ...
... halo, a larger cloud of stars that surround the entire Galaxy. The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas and dust. The dust blocks out light from distant stars, and makes it difficult to see most of the Galaxy, especially the bulge and parts of the ...
computational astrophysics (@ Uchicago) in 2042
... Given that the ab-initio modeling of all relevant baryonic physics will likely remain out of reach (even by 2042), I expect that advances in this field will likely come from (1) improvements in sub-grid modeling of relevant astrophysical processes through detailed comparisons of simulations and ob ...
... Given that the ab-initio modeling of all relevant baryonic physics will likely remain out of reach (even by 2042), I expect that advances in this field will likely come from (1) improvements in sub-grid modeling of relevant astrophysical processes through detailed comparisons of simulations and ob ...
Star formation, feedback and the role of SNe II and SNe Ia in the
... of dwarf spheroidal galaxies and found that the best fitting models for Draco have a large range of DM halo virial masses (108-109 MO) • Mashchenko et al 2006 made simulations of the interaction of Draco with our Galaxy and ruled out the “tidal dwarf” hypothesis and find that Draco is a cosmological ...
... of dwarf spheroidal galaxies and found that the best fitting models for Draco have a large range of DM halo virial masses (108-109 MO) • Mashchenko et al 2006 made simulations of the interaction of Draco with our Galaxy and ruled out the “tidal dwarf” hypothesis and find that Draco is a cosmological ...
Slide 1
... We are searching in a tiny portion of the Milky Way galaxy, and yet our galaxy is only one of more than 100 billion galaxies in the Universe! All but 4 specks in this “Hubble Deep Field” image are entire galaxies, each of them with 100 billion stars. ...
... We are searching in a tiny portion of the Milky Way galaxy, and yet our galaxy is only one of more than 100 billion galaxies in the Universe! All but 4 specks in this “Hubble Deep Field” image are entire galaxies, each of them with 100 billion stars. ...
Notes on Integral Field Spectroscopy (IFS/3D) Sebastián F. Sánchez / IA-UNAM
... November 2012 DR2: Oct. 2014!!! ...
... November 2012 DR2: Oct. 2014!!! ...
2013. CCAT. All Rights Reserved.
... spectral surveys of galaxies, measuring the bright atomic fine-structure and molecular rotational transitions which cool the interstellar gas. Detected lines will provide redshifts for and interstellar gas conditions in tens of thousands of galaxies ranging from the early universe (z > 6) to the pre ...
... spectral surveys of galaxies, measuring the bright atomic fine-structure and molecular rotational transitions which cool the interstellar gas. Detected lines will provide redshifts for and interstellar gas conditions in tens of thousands of galaxies ranging from the early universe (z > 6) to the pre ...
20 pm - Starmap
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
ASTR 340 - TerpConnect
... Hydrogen and helium together constitute approximately 99 percent of the matter in the universe. All other elements make up the remaining one percent. Among the electrons in this fast one percent, the most abundant is the critically important substance oxygen. An atom of oxygen is composed of a nucle ...
... Hydrogen and helium together constitute approximately 99 percent of the matter in the universe. All other elements make up the remaining one percent. Among the electrons in this fast one percent, the most abundant is the critically important substance oxygen. An atom of oxygen is composed of a nucle ...
Measuring the Milky Way
... The Galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The Galactic disk is where the youngest stars are, as well as star formation regions – emission nebulae, large clouds of gas and ...
... The Galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The Galactic disk is where the youngest stars are, as well as star formation regions – emission nebulae, large clouds of gas and ...
Big Universe, Big Data: Machine Learning and
... Photometry can capture objects that may be ten times fainter than what can be measured with spectroscopy. A faint galaxy is often more distant than a bright one—not just in space, but also in time. Discovering faint objects therefore offers the potential of looking further back into the history of t ...
... Photometry can capture objects that may be ten times fainter than what can be measured with spectroscopy. A faint galaxy is often more distant than a bright one—not just in space, but also in time. Discovering faint objects therefore offers the potential of looking further back into the history of t ...
Contents - Classroom Complete Press
... was described above to show what you learned about them. ...
... was described above to show what you learned about them. ...
Dark Matter - UW - Laramie, Wyoming | University of Wyoming
... The Bullet Cluster • Lensing of background galaxies seen in the optical images lets the mass distribution be mapped. • The X-rays trace the hot gas, the dominant source of baryons in this cluster merger. • They don’t line up! Why? Dark Matter seems to not interact with itself the way diffuse gas do ...
... The Bullet Cluster • Lensing of background galaxies seen in the optical images lets the mass distribution be mapped. • The X-rays trace the hot gas, the dominant source of baryons in this cluster merger. • They don’t line up! Why? Dark Matter seems to not interact with itself the way diffuse gas do ...
11.3 Measuring Distances in Space
... Determining Distances by Triangulation The distance to a far away object can be determined by measuring two angles and the distance between those two angles. A line (called a baseline) is laid out and angle measurements are taken at the baseline endpoints to the distant object. Geometry and Trigono ...
... Determining Distances by Triangulation The distance to a far away object can be determined by measuring two angles and the distance between those two angles. A line (called a baseline) is laid out and angle measurements are taken at the baseline endpoints to the distant object. Geometry and Trigono ...
1.1 Fundamental Observers
... of matter. When viewed from its central point, such a distribution would be isotropic, but not necessarily homogeneous. Conversely, a universe permeated by a uniform magnetic field may be homogeneous but is certainly not isotropic, as directions along field lines can be distinguished from those perp ...
... of matter. When viewed from its central point, such a distribution would be isotropic, but not necessarily homogeneous. Conversely, a universe permeated by a uniform magnetic field may be homogeneous but is certainly not isotropic, as directions along field lines can be distinguished from those perp ...
Lecture 2: ppt, 5 MB
... celestial objects. Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The Hubble data would fill two Library of Congress book collections. In Hubbl ...
... celestial objects. Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The Hubble data would fill two Library of Congress book collections. In Hubbl ...
The Strikingly Uniform, Highly Turbulent Interstellar Medium of the
... Observed at z = 4.601 and with Lbol = 3.5 × 1014 L⊙ , W2246-0526 is the most luminous galaxy known in the Universe, and hosts a deeply-buried active galactic nucleus (AGN)/super-massive black hole (SMBH). Discovered using the Wide-field Infrared Survey Explorer (WISE), W2246-0526 is classified as a ...
... Observed at z = 4.601 and with Lbol = 3.5 × 1014 L⊙ , W2246-0526 is the most luminous galaxy known in the Universe, and hosts a deeply-buried active galactic nucleus (AGN)/super-massive black hole (SMBH). Discovered using the Wide-field Infrared Survey Explorer (WISE), W2246-0526 is classified as a ...
Galaxy - Bama.ua.edu
... • If the density is 9x10-27 kg/m3 then the galaxies will just barely recede forever despite gravitational action of matter and dark matter. • This is called the ``critical density.” • This universe is called the ``flat universe.” • Present day density (luminous and dark matter) is only ~1/4 the crit ...
... • If the density is 9x10-27 kg/m3 then the galaxies will just barely recede forever despite gravitational action of matter and dark matter. • This is called the ``critical density.” • This universe is called the ``flat universe.” • Present day density (luminous and dark matter) is only ~1/4 the crit ...
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.