Annual Report 2011 - Max Planck Institute for Astrophysics
... of topics and include a variety of data analysis acplans to move the headquarters of the European tivities while still maintaining a substantial emSouthern Observatory from Geneva to Garching, phasis on theory and numerics. Resources are Biermann’s successor, Rudolf Kippenhahn, relochanneled into ar ...
... of topics and include a variety of data analysis acplans to move the headquarters of the European tivities while still maintaining a substantial emSouthern Observatory from Geneva to Garching, phasis on theory and numerics. Resources are Biermann’s successor, Rudolf Kippenhahn, relochanneled into ar ...
Differential rotation in Sun-like stars from surface variability and
... Stellar winds: Stars like the Sun exhibit a stellar wind which consists of charged particles that are thermally and centrifugally liberated from their coronae (Parker 1958). These particles are initially locked to the magnetic field lines out to a radius where the field strength becomes less than th ...
... Stellar winds: Stars like the Sun exhibit a stellar wind which consists of charged particles that are thermally and centrifugally liberated from their coronae (Parker 1958). These particles are initially locked to the magnetic field lines out to a radius where the field strength becomes less than th ...
Ages of Young Stars
... convective overshoot. Columns 2-4 list the apparent I magnitude of the LDB, the published LDB age and the source paper. Columns 5 and 6 give a bolometric magnitude and LDB age that have been homogeneously reevaluated using the locations of the LDB from the original papers, the evolutionary models of ...
... convective overshoot. Columns 2-4 list the apparent I magnitude of the LDB, the published LDB age and the source paper. Columns 5 and 6 give a bolometric magnitude and LDB age that have been homogeneously reevaluated using the locations of the LDB from the original papers, the evolutionary models of ...
Ages of young stars
... convective overshoot. Columns 2-4 list the apparent I magnitude of the LDB, the published LDB age and the source paper. Columns 5 and 6 give a bolometric magnitude and LDB age that have been homogeneously reevaluated using the locations of the LDB from the original papers, the evolutionary models of ...
... convective overshoot. Columns 2-4 list the apparent I magnitude of the LDB, the published LDB age and the source paper. Columns 5 and 6 give a bolometric magnitude and LDB age that have been homogeneously reevaluated using the locations of the LDB from the original papers, the evolutionary models of ...
My Thesis - Uppsala Astronomical Observatory
... eclipsing binaries (DEBs) indicate that stellar models under-predict real stellar radii by 5 – 10% and predict effective temperatures that are 3 – 5% too hot. This dissertation provides a careful examination of this problem using the Dartmouth stellar evolution code. Accurate models of the three sta ...
... eclipsing binaries (DEBs) indicate that stellar models under-predict real stellar radii by 5 – 10% and predict effective temperatures that are 3 – 5% too hot. This dissertation provides a careful examination of this problem using the Dartmouth stellar evolution code. Accurate models of the three sta ...
The universe of the coming ALMA revolution
... The colors of light that our eyes can detect are but a thin sliver of the entire spectrum. The universe emits light in every invisible color, from radio waves to gamma rays, and studies conducted within each band of the spectrum contribute uniquely to our understanding. Only now has technology cau ...
... The colors of light that our eyes can detect are but a thin sliver of the entire spectrum. The universe emits light in every invisible color, from radio waves to gamma rays, and studies conducted within each band of the spectrum contribute uniquely to our understanding. Only now has technology cau ...
CoRoT III programme
... Beyond oscillations, the CoRoT data revealed the signature of various phenomena which are now studied actively: granulation, activity, mapping of inhomogeneities on stellar surfaces. Because CoRoT is probing effects that were not detectable so far, new types of signal analysis as well as new theoret ...
... Beyond oscillations, the CoRoT data revealed the signature of various phenomena which are now studied actively: granulation, activity, mapping of inhomogeneities on stellar surfaces. Because CoRoT is probing effects that were not detectable so far, new types of signal analysis as well as new theoret ...
The ALMA Universe - ALMA Observatory
... are two, named Otto and Lore — are customdesigned for just this purpose. They weigh about 130 tons and are in charge of lifting the antennas from the assembly and testing site (the Operations Support Facility (OSF), located at an altitude of 2,900 meters) to their final destination on the plains of ...
... are two, named Otto and Lore — are customdesigned for just this purpose. They weigh about 130 tons and are in charge of lifting the antennas from the assembly and testing site (the Operations Support Facility (OSF), located at an altitude of 2,900 meters) to their final destination on the plains of ...
PHYSICS AND ASTRONOMY
... Students must complete not less than 6 credits from outside their major area, with 3 credits being required from outside the department, and 3 credits from a 500 or 600 level course in another area of specialization. Students choosing a M.S. degree with thesis may apply up to 8 credits of 699 but no ...
... Students must complete not less than 6 credits from outside their major area, with 3 credits being required from outside the department, and 3 credits from a 500 or 600 level course in another area of specialization. Students choosing a M.S. degree with thesis may apply up to 8 credits of 699 but no ...
astrometry, morphology, and polarimetry of comet donati in 1858
... Giovanni Battista Donati (1826–1873) in Florence, Italy, on 2 June 1858. It was found to have an elliptical orbit (e = 0.996) with a period of revolution close to 2,000 years. Perihelion took place on 30 September 1858. The comet was closest to the Earth (0.54 AU) on 10 October 1858. Comet Donati wa ...
... Giovanni Battista Donati (1826–1873) in Florence, Italy, on 2 June 1858. It was found to have an elliptical orbit (e = 0.996) with a period of revolution close to 2,000 years. Perihelion took place on 30 September 1858. The comet was closest to the Earth (0.54 AU) on 10 October 1858. Comet Donati wa ...
Planetary Nebula
... the central star is so prominent, the original thinking on this nebula’s formation focused around the central star itself. But the motions of the gas are also being observed and a recent study suggest that some of the structures observed are caused by the interaction of central star wind and radiati ...
... the central star is so prominent, the original thinking on this nebula’s formation focused around the central star itself. But the motions of the gas are also being observed and a recent study suggest that some of the structures observed are caused by the interaction of central star wind and radiati ...
The spectroscopic Hertzsprung
... Fig. 2. Tracks of the same models as those shown in Fig. 1, in the sHR diagram. While the ordinate is defined via the spectroscopically measurable quantities T eff and log g, its numerical value gives the logarithm of the luminosity-to-mass ratio, in solar units. The right-side ordinate scale gives ...
... Fig. 2. Tracks of the same models as those shown in Fig. 1, in the sHR diagram. While the ordinate is defined via the spectroscopically measurable quantities T eff and log g, its numerical value gives the logarithm of the luminosity-to-mass ratio, in solar units. The right-side ordinate scale gives ...
The Project Gutenberg eBook #32000: An
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
Project T-REX: Italian technologies for E
... excursus and a technological excursus, which started with software development and has evolved into participation to project and realization of spectrographs for both ground based and space telescopes. Her participation to such activities have evolved from simple participant, to roles of increasing ...
... excursus and a technological excursus, which started with software development and has evolved into participation to project and realization of spectrographs for both ground based and space telescopes. Her participation to such activities have evolved from simple participant, to roles of increasing ...
Sky Watcher - Boise Astronomical Society
... Venus is the bright "Morning Star", blazing low in the east before and during dawn. The planet loses a little of its altitude in May, but at magnitude -4 around mid-month you will not have any trouble distinguishing it. The Red Planet reached opposition and peak visibility in April, and remains impr ...
... Venus is the bright "Morning Star", blazing low in the east before and during dawn. The planet loses a little of its altitude in May, but at magnitude -4 around mid-month you will not have any trouble distinguishing it. The Red Planet reached opposition and peak visibility in April, and remains impr ...
The Ages of Stars
... arrive at an understanding of a process. Some examples include: • The formation and evolution of proto-planetary disks appear to occur in the first ∼ 100 Myr of a star’s life, with debris disks forming later. At present we can just barely limit this time-scale with the methods available, but clearly ...
... arrive at an understanding of a process. Some examples include: • The formation and evolution of proto-planetary disks appear to occur in the first ∼ 100 Myr of a star’s life, with debris disks forming later. At present we can just barely limit this time-scale with the methods available, but clearly ...
Radio pulsars
... • They have been ‘recycled’ by accretion from an evolving binary companion. • This accretion spins up the neutron star to millisecond periods. • During the accretion phase the system may be detectable as an X-ray pulsar. ...
... • They have been ‘recycled’ by accretion from an evolving binary companion. • This accretion spins up the neutron star to millisecond periods. • During the accretion phase the system may be detectable as an X-ray pulsar. ...
Formation of Molecular Clouds and Global Conditions for Star
... The first maps of CO emission in nearby star forming regions and along the Galactic Plane revealed the unexpectedly large spatial extent of giant molecular clouds (GMCs Kutner et al. 1977; Lada 1976; Blair et al. 1978; Blitz and Thaddeus 1980), and their substantial contribution to the mass budget o ...
... The first maps of CO emission in nearby star forming regions and along the Galactic Plane revealed the unexpectedly large spatial extent of giant molecular clouds (GMCs Kutner et al. 1977; Lada 1976; Blair et al. 1978; Blitz and Thaddeus 1980), and their substantial contribution to the mass budget o ...