Slides from the fourth lecture
... – The localization of the short-duration, hard-spectrum GRB 050509b was a watershed event. Thanks to the nearly immediate relay of the GRB position by Swift, we began imaging the GRB field 8 minutes after the burst and continued for the following 8 days. No convincing optical/infrared candidate afte ...
... – The localization of the short-duration, hard-spectrum GRB 050509b was a watershed event. Thanks to the nearly immediate relay of the GRB position by Swift, we began imaging the GRB field 8 minutes after the burst and continued for the following 8 days. No convincing optical/infrared candidate afte ...
Senior thesis - University of Texas Astronomy Home Page
... MONET telescope. By comparing similar runs in similar weather conditions, the 82 telescope produces only roughly twice the signal-to-noise as the MONET. The accessibility of the MONET creates a number of scientific advantages. For example, time critical data can be obtained quickly without waiting f ...
... MONET telescope. By comparing similar runs in similar weather conditions, the 82 telescope produces only roughly twice the signal-to-noise as the MONET. The accessibility of the MONET creates a number of scientific advantages. For example, time critical data can be obtained quickly without waiting f ...
ABOUT PARALLAX AND… CONSTELLATIONS Abstract
... Cristina Palici di Suni suggests another possibility for a 3D model of parallax effect: it is the box shown in Figure 9. A teacher can prepare it in order to let the pupils understand that the parallax effect modifies the shape of a “constellation” of little balls on sticks if the point of view is m ...
... Cristina Palici di Suni suggests another possibility for a 3D model of parallax effect: it is the box shown in Figure 9. A teacher can prepare it in order to let the pupils understand that the parallax effect modifies the shape of a “constellation” of little balls on sticks if the point of view is m ...
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 ...
Explores Angular Size - Chandra X
... how big something is in kilometers, instead of how big it appears to be in angular measure. To get this information, all we need to know is how far away the object is from us. The moon is 324,000 kilometers away, and Venus is about 40 million kilometers away from Earth at its closest distance. The f ...
... how big something is in kilometers, instead of how big it appears to be in angular measure. To get this information, all we need to know is how far away the object is from us. The moon is 324,000 kilometers away, and Venus is about 40 million kilometers away from Earth at its closest distance. The f ...
aaswinter07ppt
... • The detailed light curve is unlike that of a supernova, nova, or any other type of variable star (1,2,3). During the outburst, V838 Mon was found to have a maximum effective temperature of an A – F star at the optical maximum in February 2002. The effective temperature then cooled to a very low ~8 ...
... • The detailed light curve is unlike that of a supernova, nova, or any other type of variable star (1,2,3). During the outburst, V838 Mon was found to have a maximum effective temperature of an A – F star at the optical maximum in February 2002. The effective temperature then cooled to a very low ~8 ...
Distance to the SMC
... will determine those values from the light curves of those four stars before graphing all the data. The data pipeline was a very long one. You will work with light curves but they are at the end of that pipeline with a most of the work coming well before them. Here is how they were produced. The SMC ...
... will determine those values from the light curves of those four stars before graphing all the data. The data pipeline was a very long one. You will work with light curves but they are at the end of that pipeline with a most of the work coming well before them. Here is how they were produced. The SMC ...
Star-S_Teacher_Guide - The University of Texas at Dallas
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
New Double Stars from Asteroidal Occultations, 1971 - 2008
... Table 1 presents the measures of all double stars observed or discovered in these occultations up to the end of 2008 – whether or not they have been reported elsewhere. They include the bright stars γ Gem (HIP 31681), λ Vir (HIP 69974), β2 Sco (HIP 78821), 1 Vul (HIP 78821) and 16 Psc (HIP 116495). ...
... Table 1 presents the measures of all double stars observed or discovered in these occultations up to the end of 2008 – whether or not they have been reported elsewhere. They include the bright stars γ Gem (HIP 31681), λ Vir (HIP 69974), β2 Sco (HIP 78821), 1 Vul (HIP 78821) and 16 Psc (HIP 116495). ...
AST1100 Lecture Notes
... the collapse is suddenly stopped, the core bounces back and an energetic shock wave is generated. This shock wave travels outwards from the core but is blocked by the massive and dense ’iron cap’, the outer core, which is in free fall towards the inner core. The energy of the shock wave heats the ou ...
... the collapse is suddenly stopped, the core bounces back and an energetic shock wave is generated. This shock wave travels outwards from the core but is blocked by the massive and dense ’iron cap’, the outer core, which is in free fall towards the inner core. The energy of the shock wave heats the ou ...
Star Formation in Our Galaxy - Wiley-VCH
... The figure of Orion the Hunter is a familiar sight in the winter sky of the Northern hemisphere. It is one of the most easily recognized constellations and includes one tenth of the 70 brightest stars. Less familiar, perhaps, is the fact that this area is an extraordinarily active site of stellar fo ...
... The figure of Orion the Hunter is a familiar sight in the winter sky of the Northern hemisphere. It is one of the most easily recognized constellations and includes one tenth of the 70 brightest stars. Less familiar, perhaps, is the fact that this area is an extraordinarily active site of stellar fo ...
Astronomy 112: The Physics of Stars Class 16 Notes: Post
... unchanged, but moves the star to higher effective temperature. The motion is roughly horizontal in the HR diagram, so this is known as the horizontal branch – it is shown by points 7-9 . The duration of this phase is roughly 108 yr, set by the amount of energy that is produced by a combination of He ...
... unchanged, but moves the star to higher effective temperature. The motion is roughly horizontal in the HR diagram, so this is known as the horizontal branch – it is shown by points 7-9 . The duration of this phase is roughly 108 yr, set by the amount of energy that is produced by a combination of He ...
The Milky Way Galaxy (ch. 23)
... Before looking at the results, there is one more rung in the ladder of distance indicators or standard candles, called the Hubble relation or Hubble’s law, to consider. [Not sure if this will have to be postponed.] Hubble’s Law –this is the basis for our ideas about how the universe formed (the “bi ...
... Before looking at the results, there is one more rung in the ladder of distance indicators or standard candles, called the Hubble relation or Hubble’s law, to consider. [Not sure if this will have to be postponed.] Hubble’s Law –this is the basis for our ideas about how the universe formed (the “bi ...
Transiting exoplanets from the CoRoT space mission
... Since the beginning of 2007, the space mission CoRoT performs wide-field stellar photometry at ultra-high precision from space (Rouan et al. 1998; Baglin et al. 2006). Currently, during an observing run up to 6,000 stars1 can be monitored simultaneously and continuously over periods of 20 to 150 day ...
... Since the beginning of 2007, the space mission CoRoT performs wide-field stellar photometry at ultra-high precision from space (Rouan et al. 1998; Baglin et al. 2006). Currently, during an observing run up to 6,000 stars1 can be monitored simultaneously and continuously over periods of 20 to 150 day ...
Deep Space Mystery Note Form 3
... Small core of neutrons Spinning neutron star. Neutrons produce radio waves in a steady stream or random bursts. Stars 10 times the sun will leave a black hole. Leave behind a large core. With no energy fuse, it doesn’t have any out ward pressure so it gets engulfed in it’s own gravity an ...
... Small core of neutrons Spinning neutron star. Neutrons produce radio waves in a steady stream or random bursts. Stars 10 times the sun will leave a black hole. Leave behind a large core. With no energy fuse, it doesn’t have any out ward pressure so it gets engulfed in it’s own gravity an ...
ph507rev1
... relatively inaccurate method of statistical parallaxes. His zero point was then used to find the distances to many other galaxies. Further work showed that there are two types of Cepheids, each with its own separate, almost parallel P-L relationship. ...
... relatively inaccurate method of statistical parallaxes. His zero point was then used to find the distances to many other galaxies. Further work showed that there are two types of Cepheids, each with its own separate, almost parallel P-L relationship. ...
... rates of about 2 to 50 oC per hour. Most chondrules cooled faster, about 100-1000 oC per hour. The experiments also suggest that chondrules and CAIs formed from pre-existing solids, and chondrules were probably recycled through the melting process several times. Thus, these components record the eff ...
R 2
... star and does not allow to the nuclearly energy generated luminosity to freely escape from the surface. If the star has a convective envelope, it expands on the thermal timescale at its bottom Although the long term effect of illumination is not easy to be understood, the short term effect on the on ...
... star and does not allow to the nuclearly energy generated luminosity to freely escape from the surface. If the star has a convective envelope, it expands on the thermal timescale at its bottom Although the long term effect of illumination is not easy to be understood, the short term effect on the on ...
Post main sequence evolution
... Where can we find it? Molecular Clouds Once we have enough material, it actually needs to collapse (gravity will take care of that) into a star. Stars are always born in clusters, where the majority of stars are low-mass stars. To determine the proportion of low-mass stars relative to highmass stars ...
... Where can we find it? Molecular Clouds Once we have enough material, it actually needs to collapse (gravity will take care of that) into a star. Stars are always born in clusters, where the majority of stars are low-mass stars. To determine the proportion of low-mass stars relative to highmass stars ...
- EPJ Web of Conferences
... The trend in mean metallicity with system luminosity is also interesting, and full of information. The trend establishes that the present-day system luminosity is correlated tightly with system properties when the stars were forming, and the self-enrichment was being established. That was at very ea ...
... The trend in mean metallicity with system luminosity is also interesting, and full of information. The trend establishes that the present-day system luminosity is correlated tightly with system properties when the stars were forming, and the self-enrichment was being established. That was at very ea ...
Foundations of Harappan Astronomy:
... The affect of these on the seasons is complex since the weather pattern in the Subcontinent is driven by the following parameters: 1) the evaporation in the southern hemisphere while it is winter in the north (around January in the present Epoch) 2) The movement of the moisture to the equatorial lat ...
... The affect of these on the seasons is complex since the weather pattern in the Subcontinent is driven by the following parameters: 1) the evaporation in the southern hemisphere while it is winter in the north (around January in the present Epoch) 2) The movement of the moisture to the equatorial lat ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.