starry night companion
... Starry Night, whose many features are described in this book, changes all that. John Mosley’s clearly written and engaging text is filled with details about this remarkable desktop planetarium, which allows you to make virtual journeys into the cosmos. Want to see why the moon changes in appearance ...
... Starry Night, whose many features are described in this book, changes all that. John Mosley’s clearly written and engaging text is filled with details about this remarkable desktop planetarium, which allows you to make virtual journeys into the cosmos. Want to see why the moon changes in appearance ...
The Alpha Centauri binary system
... Fe II, Co I, Ni I, Cu I, Y II, Ba II. Additional data centered on the Hα spectral region, for the α Cen stars and moonlight, were secured on a number of nights in 2003 and 2004, using a 13.5µm CCD, integrated to S/N ∼ 500 and with R = 43 000. Data reduction was carried out by the standard procedure ...
... Fe II, Co I, Ni I, Cu I, Y II, Ba II. Additional data centered on the Hα spectral region, for the α Cen stars and moonlight, were secured on a number of nights in 2003 and 2004, using a 13.5µm CCD, integrated to S/N ∼ 500 and with R = 43 000. Data reduction was carried out by the standard procedure ...
Educator`s Guide
... Educator’s Guide The constellation Draco, the dragon: - Winds between the Big and Little Dippers. - Generally takes up all of the remaining bright stars between those two constellations. - Draco’s head hangs down near Cepheus. - Draco is probably the toughest circumpolar constellation to find, - If ...
... Educator’s Guide The constellation Draco, the dragon: - Winds between the Big and Little Dippers. - Generally takes up all of the remaining bright stars between those two constellations. - Draco’s head hangs down near Cepheus. - Draco is probably the toughest circumpolar constellation to find, - If ...
Legends Night Sky Orion
... Educator’s Guide The constellation Draco, the dragon: - Winds between the Big and Little Dippers. - Generally takes up all of the remaining bright stars between those two constellations. - Draco’s head hangs down near Cepheus. - Draco is probably the toughest circumpolar constellation to find, - If ...
... Educator’s Guide The constellation Draco, the dragon: - Winds between the Big and Little Dippers. - Generally takes up all of the remaining bright stars between those two constellations. - Draco’s head hangs down near Cepheus. - Draco is probably the toughest circumpolar constellation to find, - If ...
A New Science Strategy for Space Astronomy and Astrophysics
... next decade,1 prepared by a committee under the leadership of John Bahcall. Like previous decadal studies in this field, the report identified in priority order the most important scientific programs and projects for both groundand space-based research. It recommended a single large initiative for s ...
... next decade,1 prepared by a committee under the leadership of John Bahcall. Like previous decadal studies in this field, the report identified in priority order the most important scientific programs and projects for both groundand space-based research. It recommended a single large initiative for s ...
HH 222: A Giant Herbig-Haro Flow from the
... Streamers or ”the waterfall” on account of its unusual structure. At the center of these streamers are two infrared sources coincident with a nonthermal radio jet aligned along the principal streamer. The unique morphology of HH 222 has long been associated with this radio jet. However, new infrared ...
... Streamers or ”the waterfall” on account of its unusual structure. At the center of these streamers are two infrared sources coincident with a nonthermal radio jet aligned along the principal streamer. The unique morphology of HH 222 has long been associated with this radio jet. However, new infrared ...
OBSERVATIONS OF PHYSICAL PROCESSES IN
... BCGs which are considered “active” and contain strong central radio sources as well as line emission suggesting star formation. While there is this dichotomy, the relative importance of physical processes which may help to create this dichotomy, is not well determined. In Chapter 2, we examine the u ...
... BCGs which are considered “active” and contain strong central radio sources as well as line emission suggesting star formation. While there is this dichotomy, the relative importance of physical processes which may help to create this dichotomy, is not well determined. In Chapter 2, we examine the u ...
Asteroid Rotation Periods
... of a magnitude have been used. Even higher precision can be used, but this is not justified for measurements made by the eye alone, since the accuracy is about ½mag, and this is why the magnitude scale at first had only integer values. However today with the use of electronic sensors it is possible ...
... of a magnitude have been used. Even higher precision can be used, but this is not justified for measurements made by the eye alone, since the accuracy is about ½mag, and this is why the magnitude scale at first had only integer values. However today with the use of electronic sensors it is possible ...
View
... of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your telescope, so you should keep this manual handy until you ...
... of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your telescope, so you should keep this manual handy until you ...
THE PERIOD OF ROTATION OF THE SUN
... database includes data from the Hubble Guide Star Catalog (about 16 million objects), plus additional data on 24 thousand galaxies, 2269 quasi-stellar objects and 558 pulsars. In addition, VIREO data files contain the orbital elements of about 29 thousand asteroids. When used with a broad-band inter ...
... database includes data from the Hubble Guide Star Catalog (about 16 million objects), plus additional data on 24 thousand galaxies, 2269 quasi-stellar objects and 558 pulsars. In addition, VIREO data files contain the orbital elements of about 29 thousand asteroids. When used with a broad-band inter ...
Colour-magnitude diagrams of the post
... VHB = 18.2 and E(B − V ) = 0.80, and a distance of 11.0 kpc from the Sun. Based on Alcaino’s CMD, Webbink (1985) also presents VHB = 18.2, but estimated a somewhat higher reddening of E(B − V ) = 0.88 which placed the cluster at d = 9.1 from the Sun. Webbink lists a rather low metallicity for the c ...
... VHB = 18.2 and E(B − V ) = 0.80, and a distance of 11.0 kpc from the Sun. Based on Alcaino’s CMD, Webbink (1985) also presents VHB = 18.2, but estimated a somewhat higher reddening of E(B − V ) = 0.88 which placed the cluster at d = 9.1 from the Sun. Webbink lists a rather low metallicity for the c ...
Vireo Manual - Gettysburg College
... database includes data from the Hubble Guide Star Catalog (about 16 million objects), plus additional data on 24 thousand galaxies, 2269 quasi-stellar objects and 558 pulsars. In addition, VIREO data files contain the orbital elements of about 29 thousand asteroids. When used with a broad-band inter ...
... database includes data from the Hubble Guide Star Catalog (about 16 million objects), plus additional data on 24 thousand galaxies, 2269 quasi-stellar objects and 558 pulsars. In addition, VIREO data files contain the orbital elements of about 29 thousand asteroids. When used with a broad-band inter ...
Properties of White Dwarfs, Teacher Guide
... that to our Sun at 5,770 Kelvin, and you understand why these objects when first discovered were called “white”. They are very hot. But what about “dwarf”? Based on Bessel’s calculations for Sirius’s companion, astronomers were able to find Sirius B and measure its apparent brightness (magnitude), w ...
... that to our Sun at 5,770 Kelvin, and you understand why these objects when first discovered were called “white”. They are very hot. But what about “dwarf”? Based on Bessel’s calculations for Sirius’s companion, astronomers were able to find Sirius B and measure its apparent brightness (magnitude), w ...
Celestial Navitation - National University of Singapore
... people closer that allowed the progress of civilization. Humans of early years had learned that one of the most convenient and efficient ways of traveling was by water. This mode of transport allowed them to ferry goods to and fro from other countries to engage in trading and travel. ...
... people closer that allowed the progress of civilization. Humans of early years had learned that one of the most convenient and efficient ways of traveling was by water. This mode of transport allowed them to ferry goods to and fro from other countries to engage in trading and travel. ...
ASI 2017 Abstract Book - Astronomical Society of India
... Priya Hasan - A tale of two Populations: NGC 281 Bryan Rithesh - Miranda Detecting UV bright stellar population in Open ClusterRemnants Neelam Panwar - Stellar content and mass function of the cluster Be 59towards the low-mass end Sindhu N - How hot are Blue Stragglers? Snehalata Sahu - UVIT Imaging ...
... Priya Hasan - A tale of two Populations: NGC 281 Bryan Rithesh - Miranda Detecting UV bright stellar population in Open ClusterRemnants Neelam Panwar - Stellar content and mass function of the cluster Be 59towards the low-mass end Sindhu N - How hot are Blue Stragglers? Snehalata Sahu - UVIT Imaging ...
Set 3 AStronomy questions
... 21) ASTRONOMY Short Answer A stargazer looks at Orion and sees a reddish star called Betelgeuse. The redness is because the star is what type of star? ANSWER: A RED GIANT BONUS 21) ASTRONOMY Short Answer What is the MOST common name for the celestial objects that are called stars but since they are ...
... 21) ASTRONOMY Short Answer A stargazer looks at Orion and sees a reddish star called Betelgeuse. The redness is because the star is what type of star? ANSWER: A RED GIANT BONUS 21) ASTRONOMY Short Answer What is the MOST common name for the celestial objects that are called stars but since they are ...
Mass Functions in Fractal Clouds: The Role of Cloud Structure in the
... assumed to be this clump mass function multiplied by the probability that a clump of mass M exceeds the thermal Jeans mass; the pdf for thermal Jeans masses comes from the pdf for density at a constant temperature. Their clump model steepens the mass function slope above the value of −1 for mass-con ...
... assumed to be this clump mass function multiplied by the probability that a clump of mass M exceeds the thermal Jeans mass; the pdf for thermal Jeans masses comes from the pdf for density at a constant temperature. Their clump model steepens the mass function slope above the value of −1 for mass-con ...
diy astronomy - American Museum of Natural History
... • There are limitations to using telescopes on the surface of Earth, mainly because Earth’s atmosphere absorbs or blurs the light. One solution is to send telescopes to space. • Astronomers no longer look directly into telescope. They use cameras, which are specialized photon detectors and are muc ...
... • There are limitations to using telescopes on the surface of Earth, mainly because Earth’s atmosphere absorbs or blurs the light. One solution is to send telescopes to space. • Astronomers no longer look directly into telescope. They use cameras, which are specialized photon detectors and are muc ...
Abiotic formation of O2 and O3 in high
... cases was assumed to be the same as the one measured on present Earth (Massie & Hunten 1981), with modifications for atmospheres in which the total surface pressure exceeded one bar. All of the simulated planets were assumed to be devoid of life; hence, none of the compounds in the atmosphere was co ...
... cases was assumed to be the same as the one measured on present Earth (Massie & Hunten 1981), with modifications for atmospheres in which the total surface pressure exceeded one bar. All of the simulated planets were assumed to be devoid of life; hence, none of the compounds in the atmosphere was co ...
The Milky Way`s external disc constrained by 2MASS star counts
... warp, we then tentatively adjust the star counts on both sides of the galaxy, to check the values of the northern and the southern warps independently. As such, it is not possible for us to create a stellar overdensity in the model by a misalignment of the stellar and dusty warps. Figure 3 (top pane ...
... warp, we then tentatively adjust the star counts on both sides of the galaxy, to check the values of the northern and the southern warps independently. As such, it is not possible for us to create a stellar overdensity in the model by a misalignment of the stellar and dusty warps. Figure 3 (top pane ...
On the composition of GRBs` Collapsar jets
... ≤95 per cent (2σ ).5 The best-fitting plateaus extend from 5 to 25 s in the BATSE data (7.19/4 χ 2 /DOF), from 2.5 to 17 s in the FermiGBM data (10/5 χ 2 /DOF) and from 1 to 20 s in the Swift data (15.85/9 χ 2 /DOF). We account for three free parameters in our fit: the height of the plateau and the ...
... ≤95 per cent (2σ ).5 The best-fitting plateaus extend from 5 to 25 s in the BATSE data (7.19/4 χ 2 /DOF), from 2.5 to 17 s in the FermiGBM data (10/5 χ 2 /DOF) and from 1 to 20 s in the Swift data (15.85/9 χ 2 /DOF). We account for three free parameters in our fit: the height of the plateau and the ...
Luminosity profiles and sizes of massive star clusters in NGC 7252
... Fellhauer & Kroupa (2005) carried out N-body model simulations of a system of massive star clusters distributed as a Plummer sphere, assuming that the clusters are in virial equilibrium, and found that the clusters merge within a few hundred Myr. The remnant formed in their simulations has a massive ...
... Fellhauer & Kroupa (2005) carried out N-body model simulations of a system of massive star clusters distributed as a Plummer sphere, assuming that the clusters are in virial equilibrium, and found that the clusters merge within a few hundred Myr. The remnant formed in their simulations has a massive ...
R136a1
RMC 136a1 (usually abbreviated to R136a1) is a Wolf-Rayet star located at the center of R136, the central condensation of stars of the large NGC 2070 open cluster in the Tarantula Nebula. It lies at a distance of about 50 kiloparsecs (163,000 light-years) in the Large Magellanic Cloud. It has the highest mass and luminosity of any known star, at 265 M☉ and 8.7 million L☉, and also one of the hottest at over 50,000 K.