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What are your ideas about The Universe? - Harvard
... Saturn shows well defined rings, which would have formed much more recently than our moon... We tend to think of stars as having been around for a very long time. In fact our Sun is billions of years old. But new generations of stars, like those in the Pleiades, are continually being born. Most peop ...
... Saturn shows well defined rings, which would have formed much more recently than our moon... We tend to think of stars as having been around for a very long time. In fact our Sun is billions of years old. But new generations of stars, like those in the Pleiades, are continually being born. Most peop ...
Universe, Dark Energy and Dark Matter
... The Universe does not contain such huge spherical regions but we can imagine them by “scooping” out all the galaxies out of a big (~300 Mpc) spherical volume and then bringing them back, one after another, into the resultant cavity with fiat space-time. When bringing back the galaxies we can express ...
... The Universe does not contain such huge spherical regions but we can imagine them by “scooping” out all the galaxies out of a big (~300 Mpc) spherical volume and then bringing them back, one after another, into the resultant cavity with fiat space-time. When bringing back the galaxies we can express ...
Paradigm Shifts in Cosmology
... force so that its effect on the expansion rate is only deceleration. In order to accelerate the expansion, a sort of repulsive force, namely, something that exerts anti-gravity is needed. What we can readily think of is Einstein s cosmological constant. The vacuum energy that caused inflation is al ...
... force so that its effect on the expansion rate is only deceleration. In order to accelerate the expansion, a sort of repulsive force, namely, something that exerts anti-gravity is needed. What we can readily think of is Einstein s cosmological constant. The vacuum energy that caused inflation is al ...
A Tidal Disruption Event Candidate from the 2XMM Catalog
... 1. University of New Hampshire; 2. University of Alabama; 3. Gemini Observatory, 4. Institut de Recherche en Astrophysique et Planétologie, France; 5. Morehead State University ...
... 1. University of New Hampshire; 2. University of Alabama; 3. Gemini Observatory, 4. Institut de Recherche en Astrophysique et Planétologie, France; 5. Morehead State University ...
File
... o Spiral galaxies have “arms” of stars that spiral outward from the center. The overall shape is round and flat like a plate, but the dense center of a spiral galaxy is spherical. Younger stars are more likely found in the arms of the spiral, and older stars are most likely found in the center sphe ...
... o Spiral galaxies have “arms” of stars that spiral outward from the center. The overall shape is round and flat like a plate, but the dense center of a spiral galaxy is spherical. Younger stars are more likely found in the arms of the spiral, and older stars are most likely found in the center sphe ...
ISP 205: Visions of the Universe
... Our Sun moves randomly relative to the other stars in the local Solar neighborhood… • typical relative speeds of more than 70,000 km/hr • but stars are so far away that we cannot easily notice their motion ...
... Our Sun moves randomly relative to the other stars in the local Solar neighborhood… • typical relative speeds of more than 70,000 km/hr • but stars are so far away that we cannot easily notice their motion ...
Chapter 31
... • The way in which the spiral arms are maintained is not clearly understood. • There are two different theories about how the arms are maintained: 1. Spiral density waves, which can be thought of alternating dense and less-dense regions that are frozen in place and rotate as a rigid pattern, cause a ...
... • The way in which the spiral arms are maintained is not clearly understood. • There are two different theories about how the arms are maintained: 1. Spiral density waves, which can be thought of alternating dense and less-dense regions that are frozen in place and rotate as a rigid pattern, cause a ...
TEKS 8.13 A, B, and C
... to their strengths and weaknesses using scientific evidence and information. ...
... to their strengths and weaknesses using scientific evidence and information. ...
Hubble`s Constant - Scientific Research Publishing
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
AUI CA science talk - National Radio Astronomy Observatory
... • NRAO has world-leading expertise in low freq H/W and S/W, and is developing critical wide field imaging software for LWA, EVLA -additional resources could benefit all experiments • NRAO has interest in contributing to development of, and potentially operating, next-gen experiment, perhaps parallel ...
... • NRAO has world-leading expertise in low freq H/W and S/W, and is developing critical wide field imaging software for LWA, EVLA -additional resources could benefit all experiments • NRAO has interest in contributing to development of, and potentially operating, next-gen experiment, perhaps parallel ...
The Observable Universe: Redshift, Distances and the Hubble-Law
... • Most of galaxies and all Quasars have redshifted Spectra (cosmological redshift, not gravitational). • Hubble found: cz = H0 d , z < 0,1. • The Hubble Constant has to be calibrated: Cepheids and SN-Methods are nowadays the most important Distance Indicators: H0 = 72+/-5 km/s/Mpc. • Hubble-Law can ...
... • Most of galaxies and all Quasars have redshifted Spectra (cosmological redshift, not gravitational). • Hubble found: cz = H0 d , z < 0,1. • The Hubble Constant has to be calibrated: Cepheids and SN-Methods are nowadays the most important Distance Indicators: H0 = 72+/-5 km/s/Mpc. • Hubble-Law can ...
ies la arboleda – centro tic - plurilingüe
... Telescopes are used to measure the light emitted by stars and to detect other celestial bodies. However, atmosphere produces distortion in the light coming from space, to avoid this fact we use Space-Based Telescopes and other instruments. Some tools used to collect information are shown in the pict ...
... Telescopes are used to measure the light emitted by stars and to detect other celestial bodies. However, atmosphere produces distortion in the light coming from space, to avoid this fact we use Space-Based Telescopes and other instruments. Some tools used to collect information are shown in the pict ...
mg_colloq - University of Massachusetts Amherst
... al. 2012) or even that they are mostly compact disks (van der Wel et al. 2011) – The details of the selection vary. One must make sure they are equivalent – Especially at ground-based resolution, it remains very difficult to recognize the kinematical signature of compact disks and spheroids at high ...
... al. 2012) or even that they are mostly compact disks (van der Wel et al. 2011) – The details of the selection vary. One must make sure they are equivalent – Especially at ground-based resolution, it remains very difficult to recognize the kinematical signature of compact disks and spheroids at high ...
The Milky Way Galaxy
... Galactic coordinate system. Note that the plane of the solar system is not the same as the plane of the Milky Way disk, and the Earth itself is tipped with respect to the plane of the solar system. The Galactic midplane is inclined at an angle of 62.6 degrees from the celestial equator, as shown abo ...
... Galactic coordinate system. Note that the plane of the solar system is not the same as the plane of the Milky Way disk, and the Earth itself is tipped with respect to the plane of the solar system. The Galactic midplane is inclined at an angle of 62.6 degrees from the celestial equator, as shown abo ...
THE MORPHOLOGICAL DEMOGRAPHICS OF GALAXIES IN THE
... types provided by BPZ are a linear combination from a template library of SEDs. We use the CWWSB_Benitez2003 template set as described in Benítez et al. (2004). These are based on the templates from Coleman, Wu, & Weedman (1980) and Kinney et al. (1996) consisting of El, Sbc, Scd, Im, SB3, and SB2, ...
... types provided by BPZ are a linear combination from a template library of SEDs. We use the CWWSB_Benitez2003 template set as described in Benítez et al. (2004). These are based on the templates from Coleman, Wu, & Weedman (1980) and Kinney et al. (1996) consisting of El, Sbc, Scd, Im, SB3, and SB2, ...
Stars - Stallion Science
... • Superclusters contain thousands of galaxies • They are the largest known structures in the universe • It takes our solar system about 226 million years to complete one orbit of our galaxy ...
... • Superclusters contain thousands of galaxies • They are the largest known structures in the universe • It takes our solar system about 226 million years to complete one orbit of our galaxy ...
Measuring Astronomical Distances
... UT led upgrade to the HET at McDonald Observatory allowed the telescope to observe a wider field of view This blind survey will get spectra for ~0.3 million galaxies in the SHELA field ...
... UT led upgrade to the HET at McDonald Observatory allowed the telescope to observe a wider field of view This blind survey will get spectra for ~0.3 million galaxies in the SHELA field ...
The Expanding Universe
... many stars, then presumably it should be. ( Infinitely old ) After all, if you move the Sun twice as far away from us, we will intercept one quarter as many photons, but the Sun's angular area against the sky background will also have now dropped to a quarter of what it was. So its real intensity re ...
... many stars, then presumably it should be. ( Infinitely old ) After all, if you move the Sun twice as far away from us, we will intercept one quarter as many photons, but the Sun's angular area against the sky background will also have now dropped to a quarter of what it was. So its real intensity re ...
Results from the search for tidal disruption flares in the GALEX Deep
... Deep Imaging Survey, 80 deg2, >30 ksec (mlim ~ 25) Observations obtained in 1.5 ksec eclipses Time-tagged photon data (time resolution of 5 msec) Large field of view (1.2 sq. deg.) and a large survey volume Low sky background (source detection with 10 photons) Simultaneous NUV (1750 - 2750 Å) and FU ...
... Deep Imaging Survey, 80 deg2, >30 ksec (mlim ~ 25) Observations obtained in 1.5 ksec eclipses Time-tagged photon data (time resolution of 5 msec) Large field of view (1.2 sq. deg.) and a large survey volume Low sky background (source detection with 10 photons) Simultaneous NUV (1750 - 2750 Å) and FU ...
What we will do today:
... balloon up over time) but the space between them, just like in the universe (over time). • It can also be used to work out speed of each galaxy by recording the distances between galaxies and the time taken to increase these distances when blown. The more you blow up the balloon – the faster the spe ...
... balloon up over time) but the space between them, just like in the universe (over time). • It can also be used to work out speed of each galaxy by recording the distances between galaxies and the time taken to increase these distances when blown. The more you blow up the balloon – the faster the spe ...
Lab 14 Galaxy Morphology
... Figure 14.1: A fisheye lens view of the summertime sky showing the band of light called the Milky Way. This faint band of light is composed of the light from thousands and thousands of very faint stars. The Milky Way spans a complete circle across the celestial sphere because our solar system is loc ...
... Figure 14.1: A fisheye lens view of the summertime sky showing the band of light called the Milky Way. This faint band of light is composed of the light from thousands and thousands of very faint stars. The Milky Way spans a complete circle across the celestial sphere because our solar system is loc ...
Extragalactic Distances from Planetary Nebulae
... To produce 600 L of [O III] emission, a central star must have a luminosity of L > 6,000 L. A central star with L > 6,000 L must be more massive than M > 0.6 M. Such stars come from M > 2 M progenitors. ...
... To produce 600 L of [O III] emission, a central star must have a luminosity of L > 6,000 L. A central star with L > 6,000 L must be more massive than M > 0.6 M. Such stars come from M > 2 M progenitors. ...
HIGH RESOLTION SPH SIMULATIONS OF GALAXY CLUSTERS
... Spatial smoothing= 0.5 kpc Different feedback params. ...
... Spatial smoothing= 0.5 kpc Different feedback params. ...
Sample pages 2 PDF
... To understand something of the elements which determine f star we must review some aspects of the current understanding of the history of the universe. Evidence arising from observations of the rate at which stars and galaxies are receding from the earth indicates that, approximately 14 billion year ...
... To understand something of the elements which determine f star we must review some aspects of the current understanding of the history of the universe. Evidence arising from observations of the rate at which stars and galaxies are receding from the earth indicates that, approximately 14 billion year ...
The Milky Way - Montgomery College
... Star forming regions get elongated due to differential rotation. ...
... Star forming regions get elongated due to differential rotation. ...
Galaxy Zoo
![](https://commons.wikimedia.org/wiki/Special:FilePath/Galaxyzoo.jpg?width=300)
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.