Centimeter and Millimeter Observations of Very Young Binary Systems
... The Next Frontiers in Star Formation • With the availability of the SMA and the future construction of other interferometers we will start to study star formation with new frontiers: • Binary and multiple star formation • Star formation in the extremes (very massive stars and brown dwarfs) • Starbu ...
... The Next Frontiers in Star Formation • With the availability of the SMA and the future construction of other interferometers we will start to study star formation with new frontiers: • Binary and multiple star formation • Star formation in the extremes (very massive stars and brown dwarfs) • Starbu ...
SHELL H II REGIONS IN NGC 6334
... The Next Frontiers in Star Formation • With the availability of the SMA and the future construction of other interferometers we will start to study star formation with new frontiers: • Binary and multiple star formation • Star formation in the extremes (very massive stars and brown dwarfs) • Starbu ...
... The Next Frontiers in Star Formation • With the availability of the SMA and the future construction of other interferometers we will start to study star formation with new frontiers: • Binary and multiple star formation • Star formation in the extremes (very massive stars and brown dwarfs) • Starbu ...
May 2013 - Otterbein
... might be able to understand how they work • If we understand how stars work, we might be able to use this knowledge to measure (larger) distances ...
... might be able to understand how they work • If we understand how stars work, we might be able to use this knowledge to measure (larger) distances ...
Star-Forming Nuclear Rings in Spiral Galaxies
... The study of gas transport to the inner regions of galaxies is a fundamental aspect in our understanding of the way galaxies evolve. In this context, starforming nuclear rings are key features as they contain large amounts of gas and are the sites where a significant fraction of the current star fo ...
... The study of gas transport to the inner regions of galaxies is a fundamental aspect in our understanding of the way galaxies evolve. In this context, starforming nuclear rings are key features as they contain large amounts of gas and are the sites where a significant fraction of the current star fo ...
High velocity clouds (v > 90 km/s), up to 108 M_sun in total Seen at
... This is how V should fall off with r as long as all of the mass is interior to the orbits being considered. Now, consider a spherical distribution of mass of uniform density, in which particles (stars) orbit inside the mass distribution. The mass interior to the orbit is then ! ...
... This is how V should fall off with r as long as all of the mass is interior to the orbits being considered. Now, consider a spherical distribution of mass of uniform density, in which particles (stars) orbit inside the mass distribution. The mass interior to the orbit is then ! ...
Section 6 The Expanding Universe The Doppler Effect
... would appear to contract and create a blue shift in the wavelength. However, Slipher was to also discover that the stars were all moving away from the Earth and created a cosmic red shift. Slipher’s observations did not receive much notice, although they were essential to the pioneering work of Edw ...
... would appear to contract and create a blue shift in the wavelength. However, Slipher was to also discover that the stars were all moving away from the Earth and created a cosmic red shift. Slipher’s observations did not receive much notice, although they were essential to the pioneering work of Edw ...
Hubble Space Telescope Imaging of Post
... We investigate a sample of objects in this paper at somewhat lower redshifts and luminosities than the prototype thus it is necessary to consider the premise of Hasinger (2008). It seems that while major merger-driven evolution dominates in the early universe, producing the bulk of the brightest qua ...
... We investigate a sample of objects in this paper at somewhat lower redshifts and luminosities than the prototype thus it is necessary to consider the premise of Hasinger (2008). It seems that while major merger-driven evolution dominates in the early universe, producing the bulk of the brightest qua ...
Extreme Optics and the Search for Earth-Like Planets
... least 20 m. So, based only on wavelength and planet–star angle, one finds that the starshade must be a large distance (R/v < 40,000 km) from the telescope. Conveniently, occulters with diameters of tens of metres can also fully shade the large (up to 10 m in diameter) telescopes suitable for studyin ...
... least 20 m. So, based only on wavelength and planet–star angle, one finds that the starshade must be a large distance (R/v < 40,000 km) from the telescope. Conveniently, occulters with diameters of tens of metres can also fully shade the large (up to 10 m in diameter) telescopes suitable for studyin ...
Interstellar Medium and Star Formation
... detection of molecular lines from dense gas Millimeter wavelengths for rotational, vibrational lines from heterogeneous molecules NH2 and H2O first found (Cheung et al. 1968, Knowles et al. 1969) then CO (Penzias et al. 1970), used to trace H2 Superthermal linewidths revealed (Zuckerman & Palm ...
... detection of molecular lines from dense gas Millimeter wavelengths for rotational, vibrational lines from heterogeneous molecules NH2 and H2O first found (Cheung et al. 1968, Knowles et al. 1969) then CO (Penzias et al. 1970), used to trace H2 Superthermal linewidths revealed (Zuckerman & Palm ...
The Sky This Month
... • From the period of pulsation we can find how bright it really is and compare to how bright it appears and therefore find its distance. • Forms a rung on the Astrophysical distance measurement ladder. ...
... • From the period of pulsation we can find how bright it really is and compare to how bright it appears and therefore find its distance. • Forms a rung on the Astrophysical distance measurement ladder. ...
Document
... the universe with unprecedented clarity and sensitivity. • The picture clearly shows faint structure as small as 30 light-years across in a galaxy tens of millions of light-years away. The Earth and Beyond… GCSE Physics Notes LOJ ...
... the universe with unprecedented clarity and sensitivity. • The picture clearly shows faint structure as small as 30 light-years across in a galaxy tens of millions of light-years away. The Earth and Beyond… GCSE Physics Notes LOJ ...
Absolute Magnitudes of Supernovae
... Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear suddenly, as they increase rapidly in brightness, and then fade slowly over w ...
... Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear suddenly, as they increase rapidly in brightness, and then fade slowly over w ...
File - Mr. Gray`s Class
... The centerpiece of our planetary system is Sol (the Sun), a million-mile-wide, yellow dwarf star. Its gravity keeps the planets in orbit around it. Its vast outpouring of energy illuminates all the worlds around it and sustains the fragile life-forms on the watery planet we call Earth. To give you s ...
... The centerpiece of our planetary system is Sol (the Sun), a million-mile-wide, yellow dwarf star. Its gravity keeps the planets in orbit around it. Its vast outpouring of energy illuminates all the worlds around it and sustains the fragile life-forms on the watery planet we call Earth. To give you s ...
Mr. Traeger`s Light and Stars PowerPoint
... Cepheid Variable Stars can be used to measure long distances to stars. Cycles of brightness range from 1 to 50 days. A star with a cycle of 50 days would be brighter than a star with a brightness range of 1 day. Astronomers can calculate long distances by comparing a Cepheid’s apparent and absolute ...
... Cepheid Variable Stars can be used to measure long distances to stars. Cycles of brightness range from 1 to 50 days. A star with a cycle of 50 days would be brighter than a star with a brightness range of 1 day. Astronomers can calculate long distances by comparing a Cepheid’s apparent and absolute ...
L6-Diskproperties
... *though in MW HI distribution can be hindered by dust in disk *emission becomes optically thick (mass ≠ intensity) Deep HI maps detect ~1019 H atoms/cm2 or 0.1M/pc2 Example: NGC 7331 contains 1.1 x 1010M HI gas ...
... *though in MW HI distribution can be hindered by dust in disk *emission becomes optically thick (mass ≠ intensity) Deep HI maps detect ~1019 H atoms/cm2 or 0.1M/pc2 Example: NGC 7331 contains 1.1 x 1010M HI gas ...
Document
... “H II regions are regions of hot (several thousand K), thin hydrogen emission nebulae that glow from the fluorescence of hydrogen atoms. The roman numeral ``II'' of H II means that hydrogen is missing one electron. A He III nebula is made of helium gas with two missing electrons. A H I nebula is mad ...
... “H II regions are regions of hot (several thousand K), thin hydrogen emission nebulae that glow from the fluorescence of hydrogen atoms. The roman numeral ``II'' of H II means that hydrogen is missing one electron. A He III nebula is made of helium gas with two missing electrons. A H I nebula is mad ...
Li-cai Deng
... of one galaxy instead of comparing snapshots of many. It is only now that we have large surveys of the whole sky that we are able to comprehend the Milky Way as a whole. Unlike external galaxies, the picture we are building is in three dimensions of position and velocity, with much higher accuracy i ...
... of one galaxy instead of comparing snapshots of many. It is only now that we have large surveys of the whole sky that we are able to comprehend the Milky Way as a whole. Unlike external galaxies, the picture we are building is in three dimensions of position and velocity, with much higher accuracy i ...
Introduction - Willmann-Bell
... Capricornus, Carina and Cassiopeia. Canis Minor is not often at the top of anyone’s observing list, but like its bigger brother, Canis Major, it contains a prominent first-magnitude star, Procyon, with a white dwarf companion nearly hidden in the primary’s glare. The orbit of Procyon B itself is nea ...
... Capricornus, Carina and Cassiopeia. Canis Minor is not often at the top of anyone’s observing list, but like its bigger brother, Canis Major, it contains a prominent first-magnitude star, Procyon, with a white dwarf companion nearly hidden in the primary’s glare. The orbit of Procyon B itself is nea ...
Upcoming Events
... light-blocking patches are virtually unknown to most sky watchers in the northern hemisphere, as they're all southern hemisphere objects. In visible light, these clouds appear predominantly as dark patches, obscuring and reddening the light of background stars. In the infrared, though, the gas glows ...
... light-blocking patches are virtually unknown to most sky watchers in the northern hemisphere, as they're all southern hemisphere objects. In visible light, these clouds appear predominantly as dark patches, obscuring and reddening the light of background stars. In the infrared, though, the gas glows ...
Chapter 27.1
... Spectrometers attached to optical telescopes separate light into lines of different colors, called a spectrum. Each chemical element has a characteristic dark-line spectrum. The same elements found on earth can be found in stars, but hydrogen and helium are the two most common elements. ...
... Spectrometers attached to optical telescopes separate light into lines of different colors, called a spectrum. Each chemical element has a characteristic dark-line spectrum. The same elements found on earth can be found in stars, but hydrogen and helium are the two most common elements. ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.