Lecture 2 Astronomical Distances
... HST sees Cepheids to D = 10-20 Mpc. H0 x D = 70 x 15 ~ 1000 km/s. not really far enough galaxy pecular velocities ~500 km/s. galaxies falling toward Virgo cluster. ...
... HST sees Cepheids to D = 10-20 Mpc. H0 x D = 70 x 15 ~ 1000 km/s. not really far enough galaxy pecular velocities ~500 km/s. galaxies falling toward Virgo cluster. ...
The Spectra ot Novae
... ejected material forms an effectively larger but cooler "photosphere" about the star. In this cloud most of the high frequency radiation is absorbed, leaving little for excitation of the outer gases. The emission spectrum of the principal shell, coming as it does from the outermost gas, is particula ...
... ejected material forms an effectively larger but cooler "photosphere" about the star. In this cloud most of the high frequency radiation is absorbed, leaving little for excitation of the outer gases. The emission spectrum of the principal shell, coming as it does from the outermost gas, is particula ...
Course Materials - Weber State University
... your star, and write them on the worksheet. Part D: Stump the Chumps 1. Get together with another pair of students. Get the altitude and azimuth coordinates of a star from another student (you will exchange coordinates three times---I don't care how you do it, but for each of these times, you should ...
... your star, and write them on the worksheet. Part D: Stump the Chumps 1. Get together with another pair of students. Get the altitude and azimuth coordinates of a star from another student (you will exchange coordinates three times---I don't care how you do it, but for each of these times, you should ...
Marking Scheme of Observational Sessions
... mark every report and SELECT 8 REPORTS THAT HAVE HIGEST MARKS to enter to the marks list. If the observer will be drawn deep sky objects such as ( Nebulas, Galaxies, Messier objects in the constellation mapping area, Give MINUS MARKS for that. ( drawing those objects inside constellation mapping are ...
... mark every report and SELECT 8 REPORTS THAT HAVE HIGEST MARKS to enter to the marks list. If the observer will be drawn deep sky objects such as ( Nebulas, Galaxies, Messier objects in the constellation mapping area, Give MINUS MARKS for that. ( drawing those objects inside constellation mapping are ...
The cosmological significance of high
... dwarfs), it is a reasonable expectation that Complex H might contain H II regions as well. In order to estimate the brightness of these star-forming regions, we used other Local Group dwarfs as a comparison. NGC 6822, IC 10, and the SMC have all been observed in the midinfrared by MSX, the Spitzer S ...
... dwarfs), it is a reasonable expectation that Complex H might contain H II regions as well. In order to estimate the brightness of these star-forming regions, we used other Local Group dwarfs as a comparison. NGC 6822, IC 10, and the SMC have all been observed in the midinfrared by MSX, the Spitzer S ...
direct contact among galactic civilizations by relativistic
... Planets of double and multiple star systems are expected in general to have-over astronomical timescales-such erratic orbits that the evolution of life on them is deemed unlikely’20). I fail to find this argument entirely convincing; but for conservative reasons it will be included in the discussion ...
... Planets of double and multiple star systems are expected in general to have-over astronomical timescales-such erratic orbits that the evolution of life on them is deemed unlikely’20). I fail to find this argument entirely convincing; but for conservative reasons it will be included in the discussion ...
Pluto Challenge - Cedar Amateur Astronomers
... view of the solar system grew from eight to nine planets. With a diameter of 1454 miles Pluto is a bit smaller than the Earth’s moon. All planets with the exception of Pluto orbit the Sun in a common plane known as the “plane of the ecliptic”. The plane of Pluto’s orbit is inclined 17 degrees to the ...
... view of the solar system grew from eight to nine planets. With a diameter of 1454 miles Pluto is a bit smaller than the Earth’s moon. All planets with the exception of Pluto orbit the Sun in a common plane known as the “plane of the ecliptic”. The plane of Pluto’s orbit is inclined 17 degrees to the ...
The Sun and How to Observe It For further volumes: www.springer.com/series/5338
... is a star, a sphere of glowing hot gases, one star in a massive collection called the Milky Way galaxy. Enormous pressures exist inside the Sun, creating an environment unlike anything we could possibly experience on Earth. Nuclear forces that influence conditions on our Earth and the other planets ...
... is a star, a sphere of glowing hot gases, one star in a massive collection called the Milky Way galaxy. Enormous pressures exist inside the Sun, creating an environment unlike anything we could possibly experience on Earth. Nuclear forces that influence conditions on our Earth and the other planets ...
NAME: SECTION: Mon Tue Wed Thu ASTRONOMY LAB Stellarium
... millennium by millennium, in what year (3010, 4010,…) does Vega get closest to the NCP? Next millennium when Vega is closest to the NCP: ____________________________ …and the subsequent millennium when Vega is again closest to the NCP: _______________ Difference, in years, between those two closest ...
... millennium by millennium, in what year (3010, 4010,…) does Vega get closest to the NCP? Next millennium when Vega is closest to the NCP: ____________________________ …and the subsequent millennium when Vega is again closest to the NCP: _______________ Difference, in years, between those two closest ...
preprint, pdf version - LESIA
... to their body size, which is usually related to their apparent sizes on the sky. Given the astrometric uncertainties in the star positions and the error in the TNO ephemeris, larger apparent diameters correspond to a higher probability of a successful prediction. Another selection criteria was the s ...
... to their body size, which is usually related to their apparent sizes on the sky. Given the astrometric uncertainties in the star positions and the error in the TNO ephemeris, larger apparent diameters correspond to a higher probability of a successful prediction. Another selection criteria was the s ...
Notes for Class 5, February 16
... Danish nobleman and astronomer Built great observatories on his island Fights, duels, possibly died from being drunk, but also careful astronomical measurements • Convinced astronomy needed good measurements ...
... Danish nobleman and astronomer Built great observatories on his island Fights, duels, possibly died from being drunk, but also careful astronomical measurements • Convinced astronomy needed good measurements ...
KINESTHETIC ASTRONOMY™ Written
... _____________ in the winter is the tilt of Earth’s rotation axis. Earth’s seasons are NOT caused by being closer or farther from the Sun. Earth’s rotation axis is tilted ________ degrees toward a distant star called _________________ (the North Star). As Earth moves around the Sun, Earth’s North Pol ...
... _____________ in the winter is the tilt of Earth’s rotation axis. Earth’s seasons are NOT caused by being closer or farther from the Sun. Earth’s rotation axis is tilted ________ degrees toward a distant star called _________________ (the North Star). As Earth moves around the Sun, Earth’s North Pol ...
A Spectroscopic Survey of a Sample of Active M Dwarfs.
... and rotation velocities have been measured by fits to the Hα profiles. Radial velocities have been measured by cross correlation. Artificial broadening of an observed spectrum has produced a relationship between Hα FWHM and rotation speed, which we use to infer rotation speeds for the entire sample ...
... and rotation velocities have been measured by fits to the Hα profiles. Radial velocities have been measured by cross correlation. Artificial broadening of an observed spectrum has produced a relationship between Hα FWHM and rotation speed, which we use to infer rotation speeds for the entire sample ...
Rotation Periods of Wide Binaries in the Kepler Field
... periods I calculated the autocorrelation function of the Kepler mission photometry for each star. In most systems for which good periods can be found, the cooler star has a longer period than the hotter component in general agreement with models. However, there is a wide range in the gradients of li ...
... periods I calculated the autocorrelation function of the Kepler mission photometry for each star. In most systems for which good periods can be found, the cooler star has a longer period than the hotter component in general agreement with models. However, there is a wide range in the gradients of li ...
A prevalence of dynamo-generated magnetic fields in the
... Turning to higher masses we see that, for a given νmax, stars above 1.4M" require increasingly strong magnetic fields to suppress their dipolar modes. From Fig. 4, there is no clear upper limit to the field strengths present in red giant cores, given that dipole-suppressed stars are common even when ...
... Turning to higher masses we see that, for a given νmax, stars above 1.4M" require increasingly strong magnetic fields to suppress their dipolar modes. From Fig. 4, there is no clear upper limit to the field strengths present in red giant cores, given that dipole-suppressed stars are common even when ...
April 2014 - Bluewater Astronomical Society
... for its content. Your original arHcles, images, opinions, comments, observing reports, etc., are welcome. I reserve the right to edit for brevity or clarity. Errors or omissions ...
... for its content. Your original arHcles, images, opinions, comments, observing reports, etc., are welcome. I reserve the right to edit for brevity or clarity. Errors or omissions ...
Formation of z~6 Quasars from Hierarchical Galaxy Mergers
... ¥ Progenitors are very compact and gas rich. ¥ Strong gravitational interactions between the merging galaxies lead to tidal tails, strong shocks and efficient gas inflow that triggers large-scale starbursts. ¥ Highly concentrated gas fuels rapid accretion onto the SMBH ¥ Z ~14-9, merging systems are ...
... ¥ Progenitors are very compact and gas rich. ¥ Strong gravitational interactions between the merging galaxies lead to tidal tails, strong shocks and efficient gas inflow that triggers large-scale starbursts. ¥ Highly concentrated gas fuels rapid accretion onto the SMBH ¥ Z ~14-9, merging systems are ...
Astronomy Assignment #1
... This question requires a fairly complete understanding of the celestial coordinate system and the celestial sphere model. According to the last sentence on page 43 “if a star’s declination matches your latitude it will pass over through zenith”. This means that the declination of your zenith is just ...
... This question requires a fairly complete understanding of the celestial coordinate system and the celestial sphere model. According to the last sentence on page 43 “if a star’s declination matches your latitude it will pass over through zenith”. This means that the declination of your zenith is just ...
Written Transcript of this video lesson
... So if we come back now that you understand a little bit about how force makes something move in a circle, here’s our star and it’s moving like this at some radius from the center of the galaxy. And one thing you probably learned in your elementary physics studies is that if we look at this star, it’ ...
... So if we come back now that you understand a little bit about how force makes something move in a circle, here’s our star and it’s moving like this at some radius from the center of the galaxy. And one thing you probably learned in your elementary physics studies is that if we look at this star, it’ ...
Level 2 Meteorites, Shooting Stars, and Comets
... happens when the Earth goes through a region of space that is especially filled with dust and chunks of rock. Therefore we get many more meteors at these times. More precisely, meteor showers happen when Earth, on its way around the Sun, passes through the path of a comet. That's because as a comet ...
... happens when the Earth goes through a region of space that is especially filled with dust and chunks of rock. Therefore we get many more meteors at these times. More precisely, meteor showers happen when Earth, on its way around the Sun, passes through the path of a comet. That's because as a comet ...
Star formation in a galactic outflow
... adimensional ionization parameter U) much lower than typically observed in star-forming galaxies. Yet, despite the gas density in the outflow (~600-1,500 cm-3, as inferred from the [SII] doublet) being higher than in the host galaxy and than that typically seen in star-forming galaxies, the ionizati ...
... adimensional ionization parameter U) much lower than typically observed in star-forming galaxies. Yet, despite the gas density in the outflow (~600-1,500 cm-3, as inferred from the [SII] doublet) being higher than in the host galaxy and than that typically seen in star-forming galaxies, the ionizati ...
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.