Development of a Software Package for the Reduction and Analysis
... This work represents a detailed study of the development of a software package, SPARVM, for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) w ...
... This work represents a detailed study of the development of a software package, SPARVM, for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) w ...
STARLAB
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
harlow shapley - National Academy of Sciences
... of delivering a message to a group of colonists. The boy apparently made the trip across the river and back safely and did deliver the message. There is an old "Shapley House" somewhere in Connecticut facing the ocean. To return to the Shapleys in Missouri. Horace was not interested in being properl ...
... of delivering a message to a group of colonists. The boy apparently made the trip across the river and back safely and did deliver the message. There is an old "Shapley House" somewhere in Connecticut facing the ocean. To return to the Shapleys in Missouri. Horace was not interested in being properl ...
Understanding Variable Stars - Central Florida Astronomical Society
... star at maximum (left) and minimum (right) brightness 18 2.3 Cepheid variable stars discovered by E.P. Hubble (the numbered stars) in the nearby spiral galaxy M33 20 2.4 The proper motion is the annual angular (apparent) motion of a star across the sky 21 2.5 The passbands of the visual (UBV) and in ...
... star at maximum (left) and minimum (right) brightness 18 2.3 Cepheid variable stars discovered by E.P. Hubble (the numbered stars) in the nearby spiral galaxy M33 20 2.4 The proper motion is the annual angular (apparent) motion of a star across the sky 21 2.5 The passbands of the visual (UBV) and in ...
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 ...
A spectroscopic study of detached binary systems using precise radial velocities
... astrometric and spectroscopic techniques in recent years, it is hoped that many more binary systems will be amenable to these complementary strategies. Several months after this thesis began, a high-resolution spectrograph, Hercules, commenced operations at the Mt John University Observatory, to be ...
... astrometric and spectroscopic techniques in recent years, it is hoped that many more binary systems will be amenable to these complementary strategies. Several months after this thesis began, a high-resolution spectrograph, Hercules, commenced operations at the Mt John University Observatory, to be ...
Giant star seismology
... Asteroseismology – the study of global properties of stars and their internal structure through their global intrinsic oscillations – is already more than a century old. An early remarkable result was obtained for Cepheids revealing the period-luminosity relation (Leavitt and Pickering, 1912), which ...
... Asteroseismology – the study of global properties of stars and their internal structure through their global intrinsic oscillations – is already more than a century old. An early remarkable result was obtained for Cepheids revealing the period-luminosity relation (Leavitt and Pickering, 1912), which ...
Communications in Asteroseismology
... The answer to the first question is easy: at the outset of this meeting, MOST was already in space and COROT was soon to be. Therefore, the next projects must already be thought about in order not to lose valuable time. The answer to the second question, however, is hidden in a rather long story whic ...
... The answer to the first question is easy: at the outset of this meeting, MOST was already in space and COROT was soon to be. Therefore, the next projects must already be thought about in order not to lose valuable time. The answer to the second question, however, is hidden in a rather long story whic ...
On the characterisation of the Galactic warp in the Gaia era
... I would like to thank my supervisors Francesca Figueras and Luis Aguilar for all I have learned from them. You both are the best teachers any student can ask for. Thank you Francesca for all of your support and patience, aspiring guidance and immense knowledge. You always made time to help and advis ...
... I would like to thank my supervisors Francesca Figueras and Luis Aguilar for all I have learned from them. You both are the best teachers any student can ask for. Thank you Francesca for all of your support and patience, aspiring guidance and immense knowledge. You always made time to help and advis ...
Present-day cosmic abundances - Dr. Karl Remeis
... An ideal alternative to find a reference for the chemical composition of cosmic matter are normal unevolved early B-type stars of ∼8-18 M⊙ , which can provide simultaneously temporal (present-day) and local (birth place) information on chemical abundances. They can be observed not only in the solar ...
... An ideal alternative to find a reference for the chemical composition of cosmic matter are normal unevolved early B-type stars of ∼8-18 M⊙ , which can provide simultaneously temporal (present-day) and local (birth place) information on chemical abundances. They can be observed not only in the solar ...
Book Describing Techniques to Detect Transiting ExoPlanets
... of a regular telephoto camera lens attached to an astronomer’s CDD, monitors a set of star fields for several months before moving on to another set of star fields. When a star appears to fade by a small amount for a short time (e.g., <0.030 magnitude for ~3 hours), and when these fading events occu ...
... of a regular telephoto camera lens attached to an astronomer’s CDD, monitors a set of star fields for several months before moving on to another set of star fields. When a star appears to fade by a small amount for a short time (e.g., <0.030 magnitude for ~3 hours), and when these fading events occu ...
my dissertation (PhD. Thesis) - Argelander
... stages of galaxies looked like long (several Gigayear) ago. However these objects are very far away, and thus appear very small and faint, so that observational constrictions blur the picture severely. Thusfar only minor evolutionary changes have been found by looking into the distant past (see e.g. ...
... stages of galaxies looked like long (several Gigayear) ago. However these objects are very far away, and thus appear very small and faint, so that observational constrictions blur the picture severely. Thusfar only minor evolutionary changes have been found by looking into the distant past (see e.g. ...
Lichtenknecker- Database of the BAV
... 13mag during maximum light and a declination north of –20 degree. There is no limit regarding the amplitude of the change of light or period. Due to the increasing use of CCD-cameras in the recent years also fainter objects were included into the database if more than one minimum was published. For ...
... 13mag during maximum light and a declination north of –20 degree. There is no limit regarding the amplitude of the change of light or period. Due to the increasing use of CCD-cameras in the recent years also fainter objects were included into the database if more than one minimum was published. For ...
Full Text - Departement Natuurkunde en Sterrenkunde
... Strömgren photometric system . . . . . . . . . . . . . . . . . . . . . 165 ...
... Strömgren photometric system . . . . . . . . . . . . . . . . . . . . . 165 ...
- National Optical Astronomy Observatory
... repeatedly originate. The theory of active longitudes existing on the solar surface was hypothesized to be supported if the sunspot paths were tracked, and they were found to have similar longitude of origination within the same Carrington longitude. Some of the data was found to support the hypothe ...
... repeatedly originate. The theory of active longitudes existing on the solar surface was hypothesized to be supported if the sunspot paths were tracked, and they were found to have similar longitude of origination within the same Carrington longitude. Some of the data was found to support the hypothe ...
Brightest Stars : Discovering the Universe Through the Sky`s Most
... to teach them about the most outstanding individual stars, using those stars as powerful exemplars. One could do this by selecting the most technically interesting stars, even ones so distant or hidden that the largest amateur telescope could never show them. But the best form of learning is learnin ...
... to teach them about the most outstanding individual stars, using those stars as powerful exemplars. One could do this by selecting the most technically interesting stars, even ones so distant or hidden that the largest amateur telescope could never show them. But the best form of learning is learnin ...
exoplanet observing for amateurs
... but I didn’t care where I was in this hierarchy. At that time there was only one level lower than mine: those who speculated about other worlds and the possibilities for intelligent life on them. How things change! We now know that planets are everywhere in the galaxy. Billions upon billions of plan ...
... but I didn’t care where I was in this hierarchy. At that time there was only one level lower than mine: those who speculated about other worlds and the possibilities for intelligent life on them. How things change! We now know that planets are everywhere in the galaxy. Billions upon billions of plan ...
A Variability Study of the Typical Red Supergiant Antares A
... the exception of the bright M-class supergiant Betelgeuse (α Orionis, M2 Iab). Betelgeuse has been well studied both observationally and theoretically, and has many features that are well described by models of convection. It was these studies of Betelgeuse that provided the main motivation for this ...
... the exception of the bright M-class supergiant Betelgeuse (α Orionis, M2 Iab). Betelgeuse has been well studied both observationally and theoretically, and has many features that are well described by models of convection. It was these studies of Betelgeuse that provided the main motivation for this ...
Evolution of low mass stars
... In 1609, for the first time in the human history, at his home in Padova, Galileo Galilei observed stars in the Milky Way with a telescope. For the next 300 years astronomers routinely observed the Galactic stars, recorded their brightness and location, and classified them into different categories. H ...
... In 1609, for the first time in the human history, at his home in Padova, Galileo Galilei observed stars in the Milky Way with a telescope. For the next 300 years astronomers routinely observed the Galactic stars, recorded their brightness and location, and classified them into different categories. H ...
the PDF program book
... On behalf of the Cool Stars 19 LOC, the SOC, and Uppsala universitet, we welcome you to Uppsala, home to the oldest university in Scandinavia and the home of Carl Linnaeus, Anders Celsius and Anders Jonas Ångström. It is our goal to provide you with a relaxed and comfortable experience. Sweden is a ...
... On behalf of the Cool Stars 19 LOC, the SOC, and Uppsala universitet, we welcome you to Uppsala, home to the oldest university in Scandinavia and the home of Carl Linnaeus, Anders Celsius and Anders Jonas Ångström. It is our goal to provide you with a relaxed and comfortable experience. Sweden is a ...
Carbon, nitrogen and oxygen abundances in
... Selection of stars with smaller π values would reduce markedly the accuracy of the derived surface gravities log g. The final list of B stars selected is presented in Table 1; it contains 22 objects in all. We present there for each star its HR and HD numbers, parallax π with its error from van Leeu ...
... Selection of stars with smaller π values would reduce markedly the accuracy of the derived surface gravities log g. The final list of B stars selected is presented in Table 1; it contains 22 objects in all. We present there for each star its HR and HD numbers, parallax π with its error from van Leeu ...
DUSTiNGS III: Distribution of Intermediate
... dust producing, AGB stars by applying photometric variability criteria. The three populations of evolved stars − TP-AGB and RGB stars, and AGB stars identified through variability analysis − allow us to not only examine the radial structure and distribution of intermediateage and old stars in the in ...
... dust producing, AGB stars by applying photometric variability criteria. The three populations of evolved stars − TP-AGB and RGB stars, and AGB stars identified through variability analysis − allow us to not only examine the radial structure and distribution of intermediateage and old stars in the in ...
Starspots: A Key to the Stellar Dynamo | SpringerLink
... exhibit remarkable magnetic activity registered through observations of extremely strong optical flares (UV Cet-type stars). Periodic brightness variations were observed in binary systems of red dwarfs (BY Dra-type) as distortions of the light curves outside eclipses. Kron (1947) was seemingly the f ...
... exhibit remarkable magnetic activity registered through observations of extremely strong optical flares (UV Cet-type stars). Periodic brightness variations were observed in binary systems of red dwarfs (BY Dra-type) as distortions of the light curves outside eclipses. Kron (1947) was seemingly the f ...
Astronomy Astrophysics Gaia-ESO Survey: The analysis of high-resolution The
... the complete Survey data set will be reanalyzed. Therefore, future releases of data products will supersede previous releases. Below is a description of iDR2: • Internal Data Release 2 (iDR2): this data release consisted of all spectra obtained from the beginning of the Survey up to the end of June ...
... the complete Survey data set will be reanalyzed. Therefore, future releases of data products will supersede previous releases. Below is a description of iDR2: • Internal Data Release 2 (iDR2): this data release consisted of all spectra obtained from the beginning of the Survey up to the end of June ...
abstracts book - Instituto de Astrofísica e Ciências do Espaço
... has allowed us to build and prepare the tools to look at other stars. Several ground facilities and space missions have completed the picture by adding the necessary data to study stars across the HR diagram with a level of detail that was in no way foreseen in 1985. In spite of the great science su ...
... has allowed us to build and prepare the tools to look at other stars. Several ground facilities and space missions have completed the picture by adding the necessary data to study stars across the HR diagram with a level of detail that was in no way foreseen in 1985. In spite of the great science su ...
Star catalogue
A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.Completeness and accuracy is described by the weakest apparent magnitude V (largest number) and the accuracy of the positions.