Results 91 to 100 of about 2,433,272 (194)
Zehn Jahre Gaia‐Messungen: Die hochgenaue Kartierung des Himmels
Physik in unserer Zeit, EarlyView.Das astrometrische Weltraumobservatorium Gaia der Europäischen Weltraumorganisation hat die astrometrische Forschung revolutioniert, indem es unter anderem präzise Positionen, Bewegungen und Entfernungen von fast zwei Milliarden Himmelsobjekten gemessen hat. Damit stellt es wertvolle Daten für fast alle Gebiete der Astrophysik bereit. Nach dem Ende der
Stefan Jordan
wiley +1 more source
SPIDERS: the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV [PDF]
, 2016 Alfred P. Sloan Foundation; US Department of Energy Office of Science; Center for High-Performance Computing at the University of Utah; Brazilian Participation Group; Carnegie Institution for Science; Carnegie Mellon University; Chilean Participation ...
N. Clerc +19 more
semanticscholar +1 more source
Are truncated stellar disks linked to the molecular gas density? [PDF]
, 2007 We know that the slope of the radial, stellar light distribution in galaxies is well described by an exponential decline and this distribution is often truncated at a break radius ($R_{br}$).
Bettoni, D. +5 more
core +1 more source
The astrophysical consequences of intervening galaxy gas on fast radio bursts [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We adopt and analyze results on the incidence and physical properties of damped Ly$ $ systems (DLAs) to predict the astrophysical impact of gas in galaxies on observations of Fast Radio Bursts (FRBs). Three DLA measures form the basis of this analysis: (i) the HI column density distribution, parameterized as a double power-law; (ii) the incidence of ...
J. Xavier Prochaska, Marcel Neeleman
openaire +3 more sources
Review of asteroid, meteor, and meteorite‐type links
Meteoritics &Planetary Science, EarlyView.Abstract With the goal to determine the origin of our meteorites in the asteroid belt, video and photographic observations of meteors have now tracked 75 meteorite falls. Six years ago, there were just hints that different meteorite types arrived on different orbits, but now, the number of orbits (N) is high enough for distinct patterns to emerge.
Peter Jenniskens +1 more
wiley +1 more source
Kinematics and stellar populations in active galaxies: the LINER NGC 4579 (M58) [PDF]
, 1997 This is an electronic version of an article published in Astronomy and Astrophysics. Palacios, J., García-Vargas, M.L., Diaz, A., Terlevich, R. and E. Terlevich. Kinematics and stellar populations in active galaxies: the LINER NGC 4579 (M58).
Díaz, Angeles I. +4 more
core +1 more source
Multi-Frequency Study of the SZ Effect in Cosmic Structures [PDF]
, 2014 The Sunyaev-Zel’dovich effect (SZE) is a relevant probe for cosmology and astrophysics. A multi-frequency approach to study the SZE in cosmic structures turns out to be crucial in the use of this probe for astrophysics and cosmology.
Colafrancesco, Sergio
core +3 more sources
Observations of Lenticular Galaxies at the 6-m Telescope of the Special Astrophysical Observatory [PDF]
GROUND-BASED ASTRONOMY IN RUSSIA. 21ST CENTURY. Proceedings of the All-Russian Conference, 2020 This is a historical review covering the last 30 years of the observational study of lenticular galaxies at the 6m telescope BTA of the Special Astrophysical Observatory of the Russian Academy of Sciences. The development of spectroscopic techniques at the BTA has allowed to get comprehensive information about this class of stellar systems, starting ...
openaire +4 more sources
Astrophysical tests of modified gravity: the morphology and kinematics of dwarf galaxies [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 This paper is the third in a series on tests of gravity using observations of stars and nearby dwarf galaxies. We carry out four distinct tests using published data on the kinematics and morphology of dwarf galaxies, motivated by the theoretical work of Hui et al. (2009) and Jain and Vanderplas (2011). In a wide class of gravity theories a scalar field
Jake Vanderplas +3 more
openaire +3 more sources
Multi‐isotope (N, O, Ti, and Cr) study of C1 and CM‐like clasts—Probing unsampled C1 material
Meteoritics &Planetary Science, EarlyView.Abstract A multi‐element isotope (N, O, Ti, and Cr) study was conducted on C1 and CM‐like clasts hosted in achondrites and chondrite breccias to understand the genesis of these chondritic clasts. The mineralogy, O, and N isotopes confirm that CM‐like clasts in howardites and polymict eucrites closely resemble CM chondrite‐like material.
Markus Patzek +9 more
wiley +1 more source