Curtis/Shapley Debate – 1920 - Tufts Institute of Cosmology
... did not always have telescopes. Humanity didn't always know the limits of our Galaxy and the existence of other galaxies - this knowledge came only this century - what was thought previously? While it is certainly true that early civilizations had a drastically different picture of the universe, the ...
... did not always have telescopes. Humanity didn't always know the limits of our Galaxy and the existence of other galaxies - this knowledge came only this century - what was thought previously? While it is certainly true that early civilizations had a drastically different picture of the universe, the ...
New brown dwarfs and giant planets
... --> 1900 all sky T dwarfs: 10 in 5000 sq deg, J < 16 (2MASS) 2 in 400 sq deg, z < 19 (SDSS) --> 80 to 200 all sky Predictions: assume L/T transition at 1250 K, M/L at 2000 K n=1 700 L dwarfs, 100 T dwarfs all sky to J=16 n=2 4600 L dwarfs, 800 T dwarfs all sky to J=16 ...
... --> 1900 all sky T dwarfs: 10 in 5000 sq deg, J < 16 (2MASS) 2 in 400 sq deg, z < 19 (SDSS) --> 80 to 200 all sky Predictions: assume L/T transition at 1250 K, M/L at 2000 K n=1 700 L dwarfs, 100 T dwarfs all sky to J=16 n=2 4600 L dwarfs, 800 T dwarfs all sky to J=16 ...
powerpoint - Physics @ IUPUI
... • 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 ...
... • 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 ...
ancient cultures 114 - Stellenbosch University
... viewers of the sky as much as they did people living thousands of years ago. For those captivated enough to view the sky over long periods and across successive days, it becomes obvious that the sky is not a stagnant beauty – everything in the sky tends to move. Once the interest of the viewer has b ...
... viewers of the sky as much as they did people living thousands of years ago. For those captivated enough to view the sky over long periods and across successive days, it becomes obvious that the sky is not a stagnant beauty – everything in the sky tends to move. Once the interest of the viewer has b ...
ALMA - ESO
... In evolved stars such as IRC+10216, ALMA will be able to image molecular and dust emission Herschel can be used to search for water vapor in the envelopes of such stars ...
... In evolved stars such as IRC+10216, ALMA will be able to image molecular and dust emission Herschel can be used to search for water vapor in the envelopes of such stars ...
A Practical Guide to Exoplanet Observing
... substituted for their respective counterparts in the examples that follow. F. Stabilization of Imaging System to Appropriate Temperature The imaging system should be put in place with enough time for it to reach its desired temperature set-point, which might also require enabling of its cooling syst ...
... substituted for their respective counterparts in the examples that follow. F. Stabilization of Imaging System to Appropriate Temperature The imaging system should be put in place with enough time for it to reach its desired temperature set-point, which might also require enabling of its cooling syst ...
Media Center Jeopardy
... Starry Night for 500 A stage in the life cycle of many stars when they increase in size and begin the conversion of helium to ...
... Starry Night for 500 A stage in the life cycle of many stars when they increase in size and begin the conversion of helium to ...
How To Find Newborn Black Holes Kazumi Kashiyama (UCB)
... Mass loss was included in the calculation, but due to the low metallicity, only 0.05 M⊙ and 0.15 M⊙ was lost in V24 and V36, respectively. Note that, if all the surface material accreted here, the black hole would rotate at nearly its maximum allowed value (i.e., the red line intersects the green on ...
... Mass loss was included in the calculation, but due to the low metallicity, only 0.05 M⊙ and 0.15 M⊙ was lost in V24 and V36, respectively. Note that, if all the surface material accreted here, the black hole would rotate at nearly its maximum allowed value (i.e., the red line intersects the green on ...
EXPLORING FUNDAMENTAL PHYSICS WITH NEUTRON STARS
... neutron stars, broadly distinguished by the source that power they emission (for a review, see Ref. [3-c]): rotational kinetic energy (RPPs), thermal energy (INSs and CCOs), magnetic field energy (magnetars), accretion from a companion star (X-ray binary pulsars). Although the normal RPPs constitute ...
... neutron stars, broadly distinguished by the source that power they emission (for a review, see Ref. [3-c]): rotational kinetic energy (RPPs), thermal energy (INSs and CCOs), magnetic field energy (magnetars), accretion from a companion star (X-ray binary pulsars). Although the normal RPPs constitute ...
exploring fundamental physics with neutron stars
... neutron stars, broadly distinguished by the source that power they emission (for a review, see Ref. [3-c]): rotational kinetic energy (RPPs), thermal energy (INSs and CCOs), magnetic field energy (magnetars), accretion from a companion star (X-ray binary pulsars). Although the normal RPPs constitute ...
... neutron stars, broadly distinguished by the source that power they emission (for a review, see Ref. [3-c]): rotational kinetic energy (RPPs), thermal energy (INSs and CCOs), magnetic field energy (magnetars), accretion from a companion star (X-ray binary pulsars). Although the normal RPPs constitute ...
ISA_lecture01 - School of Physics
... (c) has cleared the neighbourhood around its orbit. A “dwarf planet” is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) ...
... (c) has cleared the neighbourhood around its orbit. A “dwarf planet” is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) ...
Gaia talk
... • Precision: 50pico-rad, human hair at 1000km, coin on the moon • Astrometry needs more than signal to noise and image processing • One must have a physical model and understanding of every contribution to the error budget at an appropriate level • Einstein light bending at the Sun’s edge is 1,750,0 ...
... • Precision: 50pico-rad, human hair at 1000km, coin on the moon • Astrometry needs more than signal to noise and image processing • One must have a physical model and understanding of every contribution to the error budget at an appropriate level • Einstein light bending at the Sun’s edge is 1,750,0 ...
an introduction to astrophysics
... we expect you to have when you embark on either of these courses is equivalent to the end-points of the OU’s Level 2 courses: S282 Astronomy, S283 Planetary Science and the Search for Life, SXR208 Observing the Universe, S207 The Physical World and MST209 Mathematical Methods and Models. To ascertai ...
... we expect you to have when you embark on either of these courses is equivalent to the end-points of the OU’s Level 2 courses: S282 Astronomy, S283 Planetary Science and the Search for Life, SXR208 Observing the Universe, S207 The Physical World and MST209 Mathematical Methods and Models. To ascertai ...
Evidence for the Tidal Destruction of Hot Jupiters by Subgiant Stars
... Tidal transfer of angular momentum is expected to cause hot Jupiters to spiral into their host stars. Although the timescale for orbital decay is very uncertain, it should be faster for systems with larger and more evolved stars. Indeed, it is well established that hot Jupiters are found less freque ...
... Tidal transfer of angular momentum is expected to cause hot Jupiters to spiral into their host stars. Although the timescale for orbital decay is very uncertain, it should be faster for systems with larger and more evolved stars. Indeed, it is well established that hot Jupiters are found less freque ...
A Zoo of Galaxies - Portsmouth Research Portal
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
QUESTION
... • ANSWER: Happens to a star when its fuel is consumed • QUESTION: What is it will dim or die out? ...
... • ANSWER: Happens to a star when its fuel is consumed • QUESTION: What is it will dim or die out? ...
Astronomy Astrophysics Detailed abundances of a large sample of giant stars in... and in the Sagittarius nucleus
... for 76 red giant stars in NGC 6715 (M 54), a massive globular cluster (GC) lying in the nucleus of the Sagittarius dwarf galaxy. We also derived detailed abundances for 27 red giants belonging to the Sgr nucleus. Our abundances measure the intrinsic metallicity dispersion (∼0.19 dex, rms scatter) of ...
... for 76 red giant stars in NGC 6715 (M 54), a massive globular cluster (GC) lying in the nucleus of the Sagittarius dwarf galaxy. We also derived detailed abundances for 27 red giants belonging to the Sgr nucleus. Our abundances measure the intrinsic metallicity dispersion (∼0.19 dex, rms scatter) of ...
Quantitative constraints on starburst cycles in galaxies with stellar
... 109.75 −1010 M⊙ in the plane of log SFR/M∗ versus Dn (4000) and log SFR/M∗ versus HδA . We colour-code the points according to their classification: black refers to continuous, blue to ongoing burst and red to past burst. This particular mass range is chosen mainly for illustrative purposes. As can ...
... 109.75 −1010 M⊙ in the plane of log SFR/M∗ versus Dn (4000) and log SFR/M∗ versus HδA . We colour-code the points according to their classification: black refers to continuous, blue to ongoing burst and red to past burst. This particular mass range is chosen mainly for illustrative purposes. As can ...
Seasons and the Appearance of the Sky
... • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. A circumpolar star never sets Celestial equator This star never rises ...
... • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. A circumpolar star never sets Celestial equator This star never rises ...
Lec01_ch01_night_sky
... – At higher northern latitude during summer – At lower southern latitude during winter ...
... – At higher northern latitude during summer – At lower southern latitude during winter ...
The Sun
... to be stable. Earth's magnetic field reverses ~ every million years. The Sun's magnetic field is generated close to the surface. The magnetic field is dragged with the Sun's differential rotation, and it will wind up. ...
... to be stable. Earth's magnetic field reverses ~ every million years. The Sun's magnetic field is generated close to the surface. The magnetic field is dragged with the Sun's differential rotation, and it will wind up. ...
The Gaseous Halo of NGC 891 Edmund Hodges-Kluck Joel Bregman
... • Galaxy Halos • NGC 891 as an interesting case • Halo Metallicity • X-ray Measurements • Metallicity in the cool gas ...
... • Galaxy Halos • NGC 891 as an interesting case • Halo Metallicity • X-ray Measurements • Metallicity in the cool gas ...
oC - geogreenapps
... 1. In the first place, the fMtAod or plcn of the work is eminently original. "One thieg at a time," and" eyery thing in its place," baft been the author's mottoee. It begins at hom«>, or with the Solar Sya&em, and ends in the more distant or Sidereal Heavens. The Earth is treated of astronomically, ...
... 1. In the first place, the fMtAod or plcn of the work is eminently original. "One thieg at a time," and" eyery thing in its place," baft been the author's mottoee. It begins at hom«>, or with the Solar Sya&em, and ends in the more distant or Sidereal Heavens. The Earth is treated of astronomically, ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.