April 2016
... star party is Saturday, May 7, at Cow Canyon Saddle on the slopes of Mount Baldy. We usually have a good turnout for the nearby star parties, and I hope you're able to make it to this one. Speaking of observing from the mountains, our annual Mount Wilson trip is coming up in early June - our rather, ...
... star party is Saturday, May 7, at Cow Canyon Saddle on the slopes of Mount Baldy. We usually have a good turnout for the nearby star parties, and I hope you're able to make it to this one. Speaking of observing from the mountains, our annual Mount Wilson trip is coming up in early June - our rather, ...
Chapter 30: Stars
... light is shined through a prism. This rainbow is a spectrum, which is visible light arranged according to wavelengths. There are three types of spectra: continuous, emission, and absorption, as shown in Figure 30-8. All three types will be discussed on the next few pages. A spectrum that has no brea ...
... light is shined through a prism. This rainbow is a spectrum, which is visible light arranged according to wavelengths. There are three types of spectra: continuous, emission, and absorption, as shown in Figure 30-8. All three types will be discussed on the next few pages. A spectrum that has no brea ...
Stellar Activity
... • The Sun provides a template for understanding spots in other stars – Multi-year cycles – Rotational modulation – Age-rotation-activity correlation ...
... • The Sun provides a template for understanding spots in other stars – Multi-year cycles – Rotational modulation – Age-rotation-activity correlation ...
Stellar Physics 1
... A. A hot dense gas produces a continuous spectrum with no spectral lines. B. A hot diffuse gas produces bright spectral lines – an emission spectrum. C. A cool dense gas produces a continuous spectrum with no spectral lines. y D. A cool diffuse gas in front of a source of continuous spectrum produce ...
... A. A hot dense gas produces a continuous spectrum with no spectral lines. B. A hot diffuse gas produces bright spectral lines – an emission spectrum. C. A cool dense gas produces a continuous spectrum with no spectral lines. y D. A cool diffuse gas in front of a source of continuous spectrum produce ...
No Slide Title
... SSI study with 1 orbit time resolution revealed 27 fast transients in 3 A catalogue, mostly Galactic but also a BL Lac and a GRB. Low mass and high mass binary systems looked very different ...
... SSI study with 1 orbit time resolution revealed 27 fast transients in 3 A catalogue, mostly Galactic but also a BL Lac and a GRB. Low mass and high mass binary systems looked very different ...
What makes stars tick?
... almost everything about the object, from the core temperature, to how long the star lives, to how it dies. While the Sun and a star 10 times its mass may have similarities during the “adult” stages of their lives, they couldn’t be more different as they reach the later stages. Why do some end their ...
... almost everything about the object, from the core temperature, to how long the star lives, to how it dies. While the Sun and a star 10 times its mass may have similarities during the “adult” stages of their lives, they couldn’t be more different as they reach the later stages. Why do some end their ...
Slide 1
... (a very short, woefully incomplete list) 1) How else do we know the brightnesses of stars? (how bright is a Cepheid, tests of stellar evolution code, distance to LMC, distance ladder…) 2) We’d like a volume limited sample of stars (in the largest possible volume (Sun’s nearest neighbors are well hid ...
... (a very short, woefully incomplete list) 1) How else do we know the brightnesses of stars? (how bright is a Cepheid, tests of stellar evolution code, distance to LMC, distance ladder…) 2) We’d like a volume limited sample of stars (in the largest possible volume (Sun’s nearest neighbors are well hid ...
Neither Star nor Trigram - 5 Yellow Focus of Attention
... one time ‘Water’ and ‘Earth’ too many. No wonder, if then not we went back to saying just ‘Star 1’ and ‘Star 2’ - then still employed Wuxing -, we’d be soon hearing ‘Star 2 Earth controls Star 1 Water’. If not you saw mutual understanding between Stars, this may not be to account of the Wuxing ‘cont ...
... one time ‘Water’ and ‘Earth’ too many. No wonder, if then not we went back to saying just ‘Star 1’ and ‘Star 2’ - then still employed Wuxing -, we’d be soon hearing ‘Star 2 Earth controls Star 1 Water’. If not you saw mutual understanding between Stars, this may not be to account of the Wuxing ‘cont ...
McDonald Observatory Planet Search - tls
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
The IR Universe
... them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
... them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
20_LectureOutline
... Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust cloud? (Then where is it?) Could it ...
... Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust cloud? (Then where is it?) Could it ...
Blackbody Radiation, Stellar temperature and types
... depends on the photon wavelength since the scattering cross-section does. The 'color temperature' of a star is the temperature of the blackbody that best fits the stellar spectrum. ...
... depends on the photon wavelength since the scattering cross-section does. The 'color temperature' of a star is the temperature of the blackbody that best fits the stellar spectrum. ...
Abundance of Elements
... I. Derive the stellar parameters of M dwarfs using the synthetic spectra in the long wavelength region of the optical spectra (over 8000 Å), which is relatively less contaminated by molecular lines as well as telluric lines. Test the synthetic spectrum for K2 III type star : HD 110014 ...
... I. Derive the stellar parameters of M dwarfs using the synthetic spectra in the long wavelength region of the optical spectra (over 8000 Å), which is relatively less contaminated by molecular lines as well as telluric lines. Test the synthetic spectrum for K2 III type star : HD 110014 ...
The MAS Winter Schedule February 21st: Membership Meeting at
... Like just about every Spitzer data also suggest other exoplanet that carbon monoxide and discovered so far, WASPcarbon dioxide exist in the 43b is no vacation spot. atmosphere. The place The planet is the size of seems to be too hot for Jupiter but twice as clouds. massive. Indeed, the planet is sli ...
... Like just about every Spitzer data also suggest other exoplanet that carbon monoxide and discovered so far, WASPcarbon dioxide exist in the 43b is no vacation spot. atmosphere. The place The planet is the size of seems to be too hot for Jupiter but twice as clouds. massive. Indeed, the planet is sli ...
Chapter 15 Surveying the Stars
... • Any star that varies significantly in brightness with time is called a variable star. • Most pulsating variable stars inhabit an instability strip on the H-R diagram. • The most luminous ones are known as Cepheid ...
... • Any star that varies significantly in brightness with time is called a variable star. • Most pulsating variable stars inhabit an instability strip on the H-R diagram. • The most luminous ones are known as Cepheid ...
Press release - ASTRONOMY GROUP – University of St Andrews
... Answer to problem is in the stars. An astronomer at the University of St Andrews will use a powerful planet-hunting telescope to find out the true size of the Universe. Researcher Dr Alan Penny will use the brightness of half a dozen stars to refine estimates of how big the Universe actually is. Dr ...
... Answer to problem is in the stars. An astronomer at the University of St Andrews will use a powerful planet-hunting telescope to find out the true size of the Universe. Researcher Dr Alan Penny will use the brightness of half a dozen stars to refine estimates of how big the Universe actually is. Dr ...
Orbits in Spherical Potentials
... • One of them is the pericentre and the other is the apocentre. • The RADIAL PERIOD Tr is the time required for the star to travel from apocentre to pericentre and back. • To determine Tr we use: dr L2 2E 2 dt r ...
... • One of them is the pericentre and the other is the apocentre. • The RADIAL PERIOD Tr is the time required for the star to travel from apocentre to pericentre and back. • To determine Tr we use: dr L2 2E 2 dt r ...
Lab PDF - NMSU Astronomy
... along a narrow band that came to be called the Main Sequence. They also discovered that as one scanned the Main Sequence from one end to the other, the fundamental stellar property that changed along it was stellar mass. Mass is critically important because it determines how long stars can exist as ...
... along a narrow band that came to be called the Main Sequence. They also discovered that as one scanned the Main Sequence from one end to the other, the fundamental stellar property that changed along it was stellar mass. Mass is critically important because it determines how long stars can exist as ...
Climbing the Cosmic Distance Ladder: How Astronomers Measure
... Distances to very distant stars • This gave a way to obtain the absolute brightness for these stars, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years, well beyond the Milky Way! Most galaxies are fortunate to have at least one ...
... Distances to very distant stars • This gave a way to obtain the absolute brightness for these stars, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years, well beyond the Milky Way! Most galaxies are fortunate to have at least one ...
Return Visit Optimization for Planet Finding
... solid curves show the percentage of the initially detected planets that are found a second time as a function of re-visit time. The dashed lines are the percentage of planets found a second time when the return time is calculated as 1/2 of the estimated orbital period (these lines represent one spec ...
... solid curves show the percentage of the initially detected planets that are found a second time as a function of re-visit time. The dashed lines are the percentage of planets found a second time when the return time is calculated as 1/2 of the estimated orbital period (these lines represent one spec ...
Measuring Astronomical Distances
... Need some way to relate apparent magnitude (a measured quantity) to absolute magnitude (a physical property) Reminder about the astronomical magnitude system: m M ...
... Need some way to relate apparent magnitude (a measured quantity) to absolute magnitude (a physical property) Reminder about the astronomical magnitude system: m M ...
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.