Hubble space photos
... • 5000 light-years from Earth • ring is formed of comet-shaped objects moving away from a dying star ...
... • 5000 light-years from Earth • ring is formed of comet-shaped objects moving away from a dying star ...
Atypical thermonuclear supernovae from tidally crushed white dwarfs
... way that would increase the discovery rate for type Ia supernovae from a few thousands (Aldering et al. 2007) to about hundreds of thousands (Riess & Livio 2006) per year. The transient itself should have several distinguishing characteristics. First, it should be seen in association with a globular ...
... way that would increase the discovery rate for type Ia supernovae from a few thousands (Aldering et al. 2007) to about hundreds of thousands (Riess & Livio 2006) per year. The transient itself should have several distinguishing characteristics. First, it should be seen in association with a globular ...
Astronomy 1143 Quiz 2 Review
... • Stars rotate about galaxies with a speed determined by the mass of the galaxy and how far those stars are from the galaxy’s center. This speed should decrease with distance, but we see that it doesn’t. Therefore, there must be more mass in galaxies than we can see, so there must be dark matter. 6. ...
... • Stars rotate about galaxies with a speed determined by the mass of the galaxy and how far those stars are from the galaxy’s center. This speed should decrease with distance, but we see that it doesn’t. Therefore, there must be more mass in galaxies than we can see, so there must be dark matter. 6. ...
Ground-based Astronomy: Past, Present, and Future
... We can use curved 2-d surfaces to model curved 3-d space The surfaces stand for the flat equatorial plane around a condensed object like a dense star or a black hole. Walking uphill (outwards) is analogous to moving radially outward from the dense object. Note that you walk a long way on the surfac ...
... We can use curved 2-d surfaces to model curved 3-d space The surfaces stand for the flat equatorial plane around a condensed object like a dense star or a black hole. Walking uphill (outwards) is analogous to moving radially outward from the dense object. Note that you walk a long way on the surfac ...
Great Migrations & other natural history tales
... A disk of cold gas and dust fuels a black hole (BH). 300 light-years across, the disk is tipped by 60 deg, to provide a clear view of the bright inner disk. The dark, dusty disk represents a cold outer region which extends inwards to an ultra-hot accretion disk with a few AU from the BH. This disk f ...
... A disk of cold gas and dust fuels a black hole (BH). 300 light-years across, the disk is tipped by 60 deg, to provide a clear view of the bright inner disk. The dark, dusty disk represents a cold outer region which extends inwards to an ultra-hot accretion disk with a few AU from the BH. This disk f ...
00 T Tauri Stars Have Extensive Coronae?
... by modifying the simple theory, but the solutions are unfortunately not unique. Some theorists believe that special radiative transport effects in the spectral lines and electron collisions during the line-formation process cause enhanced Salmer line strengths and thereby depress the LyalHß ratio. I ...
... by modifying the simple theory, but the solutions are unfortunately not unique. Some theorists believe that special radiative transport effects in the spectral lines and electron collisions during the line-formation process cause enhanced Salmer line strengths and thereby depress the LyalHß ratio. I ...
Document
... - Estimated 1M years old - Most stars clouded from view by dust - Only 4-5 stars visible with small scope ...
... - Estimated 1M years old - Most stars clouded from view by dust - Only 4-5 stars visible with small scope ...
Jura et al. 2004 - Department of Physics and Astronomy
... C, N and O, but marked deficiencies of Fe elements by factors of 10–100 (Paunzen et al. 2002). The explanation for this abundance pattern is not known. One theory to account for their surface abundances is that they have preferentially accreted some circumstellar matter (Venn & Lambert 1990), and wi ...
... C, N and O, but marked deficiencies of Fe elements by factors of 10–100 (Paunzen et al. 2002). The explanation for this abundance pattern is not known. One theory to account for their surface abundances is that they have preferentially accreted some circumstellar matter (Venn & Lambert 1990), and wi ...
Dark Matter and Dark Energy
... radiation. • Dark energy and dark matter have not been directly observed but they have been inferred from observations of a wide variety of phenomena. There existence is vital to the Big Bang Theory. ...
... radiation. • Dark energy and dark matter have not been directly observed but they have been inferred from observations of a wide variety of phenomena. There existence is vital to the Big Bang Theory. ...
Ay122a&Fall&2015+16& Background&subtrac9on,&calibra9on,& analysis& &
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
section 17 powerpoint
... star resulting from Earth’s orbit about the Sun as 2π. Since all stars should exhibit parallax, measured values (trigonometric parallaxes) are of two types: πrel = relative parallax, is the annual displacement of a star measured relative to its nearby companions πabs = absolute parallax, is the true ...
... star resulting from Earth’s orbit about the Sun as 2π. Since all stars should exhibit parallax, measured values (trigonometric parallaxes) are of two types: πrel = relative parallax, is the annual displacement of a star measured relative to its nearby companions πabs = absolute parallax, is the true ...
The Death of a Star - hrsbstaff.ednet.ns.ca
... supermassive black hole at the center of the Milky Way has a mass of about 40,000 Suns, and the matter that surrounds it – called the ‘accretion disk’ – is a whopping 4 billion Suns. How do supermassive black holes form? Here’s an excellent, detailed article on supermassive black holes that goes ove ...
... supermassive black hole at the center of the Milky Way has a mass of about 40,000 Suns, and the matter that surrounds it – called the ‘accretion disk’ – is a whopping 4 billion Suns. How do supermassive black holes form? Here’s an excellent, detailed article on supermassive black holes that goes ove ...
click here - CAPSTONE 2011
... • At 3000 oK, the rhs is a negative number and most of the material is neutral hydrogen (only a fraction is ionized). ...
... • At 3000 oK, the rhs is a negative number and most of the material is neutral hydrogen (only a fraction is ionized). ...
Physical Science Laboratory: Skyglobe
... Record the current date ______________ and time __________________ Observe the sky at the current time from Chicago, IL. Position your point of view so that you are looking straight up. Elevation in the top left corner should be set close to 90o. (as if you were lying on your back looking at the sky ...
... Record the current date ______________ and time __________________ Observe the sky at the current time from Chicago, IL. Position your point of view so that you are looking straight up. Elevation in the top left corner should be set close to 90o. (as if you were lying on your back looking at the sky ...
Observational Lower mass limit on stars
... The type M class of stars, which make up the majority of the galaxy’s population, are continuously being studied and new knowledge is being refined. Although new studies are being done to better understand low mass stars, they are still behind in the race compared to there higher mass cousins. When ...
... The type M class of stars, which make up the majority of the galaxy’s population, are continuously being studied and new knowledge is being refined. Although new studies are being done to better understand low mass stars, they are still behind in the race compared to there higher mass cousins. When ...
Please Highlight this Area and Add your Main Title
... the photometric light curve is the periodicity of the variable star. The periodicity of any variable star describes the time it takes to change from least magnitude to greatest magnitude and back to least magnitude again. Using the data from the sky region along the ecliptic of Right Ascension 19hrs ...
... the photometric light curve is the periodicity of the variable star. The periodicity of any variable star describes the time it takes to change from least magnitude to greatest magnitude and back to least magnitude again. Using the data from the sky region along the ecliptic of Right Ascension 19hrs ...
Globular Clusters
... What is a globular cluster? How do stars evolve? Observing Filters, tri-color image Age of and Distance to M13 Age of the Universe ...
... What is a globular cluster? How do stars evolve? Observing Filters, tri-color image Age of and Distance to M13 Age of the Universe ...
Virtual Sky II (Rev 10/11)
... Name of brightest star _______________ (Size of star on chart related to brightness but look at magnitude in data panel to be sure. Lowest magnitude is brightest) Name of a double star ____________ (Click on brighter stars. If it is double there will be a components tab on the data panel) Name and n ...
... Name of brightest star _______________ (Size of star on chart related to brightness but look at magnitude in data panel to be sure. Lowest magnitude is brightest) Name of a double star ____________ (Click on brighter stars. If it is double there will be a components tab on the data panel) Name and n ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.