Results 31 to 40 of about 4,651,873 (337)
SELECTION OF DIGITAL TOOLS FOR ORGANIZING STUDENTS' GROUP WORK IN DISTANCE EDUCATION
Інформаційні технології і засоби навчання, 2023 The transformation of classical education into distance education has become increasingly relevant, especially given the challenging conditions posed by the COVID-19 pandemic and military operations in our country.
Olena G. Glazunova +3 more
doaj +1 more source
AGB variables as distance indicators [PDF]
International Astronomical Union Colloquium, 2004 AbstractEvidence for the existence of Mira Period-Luminosity relations is reviewed including recent work on Miras with thick circumstellar shells. The calibration of the relation at K is discussed in detail. The nature of variables deviating from the PL relation and possible metallicity effects are also discussed.
openaire +2 more sources
SALT2: using distant supernovae to improve the use of type Ia supernovae as distance indicators [PDF]
, 2007 We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by the SNLS ...
J. Guy +24 more
semanticscholar +1 more source
The Astronomical Journal, 2023 The accuracy of stellar distances inferred purely from parallaxes degrades rapidly with distance. Proper motion measurements, when combined with some idea of typical velocities, provide independent information on stellar distances.
C. A. L. Bailer-Jones
doaj +1 more source
ASTROPHYSICAL TESTS OF MODIFIED GRAVITY: CONSTRAINTS FROM DISTANCE INDICATORS IN THE NEARBY UNIVERSE [PDF]
, 2012 We use distance measurements in the nearby universe to carry out new tests of gravity, surpassing other astrophysical tests by over two orders of magnitude for chameleon theories. The three nearby distance indicators—cepheids, tip of the red giant branch
B. Jain, V. Vikram, Jeremy Sakstein
semanticscholar +1 more source
The extragalactic distance scale. V - Tertiary distance indicators
The Astrophysical Journal, 1979 G. Vaucouleurs
semanticscholar +2 more sources
Travel Matrix Decomposition for Understanding Spatial Long-Distance Travel Structure
Complexity, 2023 Mobile phone location data enable us to obtain accurate and temporally detailed long-distance travel distribution. However, the traditional long-distance travel distribution model cannot normally handle this detailed temporal information.
Hiromichi Yamaguchi +2 more
doaj +1 more source
Local Distance Indicators [PDF]
Symposium - International Astronomical Union, 2005 A summary is given of the calibration of the Cepheid scale required in the derivation of distances from observations at V and I, as in the HST work on extragalactic Cepheids. There is some evidence that a small metallicity correction may be necessary in deriving distances in this way.
openaire +2 more sources
Open Praxis, 2023 Due to the forces of globalization, higher education institutions have increased their participation in international partnerships and the flow of academic services and resources across borders.
Rebecca E. Heiser
doaj +1 more source
Possible distance indicators in gamma-ray pulsars [PDF]
, 2011 Distance measurement of gamma-ray pulsars is a current challenge in pulsar studies. The Large Area Telescope (LAT) aboard the Fermi gamma-ray observatory discovered more than 70 gamma-ray pulsars including 24 new gamma-selected pulsars with almost no ...
W. Wang
semanticscholar +1 more source