Results 51 to 60 of about 36,750 (220)

Evolution of interstellar dust and stardust in the solar neighbourhood

, 2007
The abundance evolution of interstellar dust species originating from stellar sources and from condensation in molecular clouds in the local interstellar medium of the Milky Way is studied and the input of dust material to the Solar System is determined.
Akerman, Alibes, Allende Prieto, Allende Prieto, Alongi, Amari, Amari, Anders, Anders, Basu, Bensby, Bensby, Berczik, Bertelli, Bianchi, Borkowski, Bradley, Bradley, Braun, Bressan, Caffau, Cartledge, Cayrel, Charbonnel, Chiappini, Chiar, Chiosi, Croat, Cunha, Cunha, da Silva, Daflon, Daulton, Delahaye, Demyk, Demyk, Dickey, Dopita, Draine, Dwek, Dwek, Dwek, Dwek, Edmunds, Edvardsson, Elmegreen, Ercolano, Falgarone, Feldman, Ferrarotti, François, Gil-Pons, Goswami, Gratton, Grevesse, H.-P. Gail, Hachisu, Helmi, Hirashita, Hollenbach, Holmberg, Holmgren, Holweger, Hoppe, Hoppe, Inoue, Iwamoto, Jenniskens, Jones, Jones, Jones, Jonsell, Jäger, Karakas, Karakas, Kemper, Kemper, Kennicutt, Kimura, Kimura, Kobayashi, Kozasa, Kroupa, Kroupa, Krumholz, Lamers, Leisawitz, Liffman, Lisenfeld, Lyubimkov, Lyubimkov, M. Trieloff, Mathis, Matteucci, Matzner, McKeegan, Melendez, Mera, Messenger, Messenger, Meynet, Miller, Min, Molster, Morgan, Nguyen, Nomoto, Nordström, Nozawa, Olling, Pollack, Pont, Portinari, Preibisch, Ramírez, Rana, Reddy, Reddy, Reiteri, Rocha-Pinto, Rocha-Pinto, Rolleston, S. Zhukovska, Salpeter, Savage, Scalo, Schaerer, Schaller, Schneider, Smith, Smith, Sofia, Soubiran, Spitzer, Sugerman, Talbot, Tammann, Tielens, Tielens, Tielens, Timmes, Todini, Trampedach, Travaglio, van den Hoek, van der Hucht, van Dishoeck, van Loon, Venn, Vollmer, Vorobyov, Welty, Williams, Woitke, Woosley, Zhao, Zinner, Zolensky, Zubko   +158 more
core   +1 more source

Rubidium in the Interstellar Medium [PDF]

, 2009
We present observations of interstellar rubidium toward o Per, zeta Per, AE Aur, HD 147889, chi Oph, zeta Oph, and 20 Aql. Theory suggests that stable 85Rb and long-lived 87Rb are produced predominantly by high-mass stars, through a combination of the ...
Abia, Arlandini, Asplund, Cartledge, Cartledge, David C. Knauth, David L. Lambert, Federman, Gratton, Kawanomoto, Knauth, Kyle M. Walker, Lambert, Lodders, Lupton, McCall, Morton, Morton, Przybilla, Péquignot, S. R. Federman, Schectman, Snow, Sofia, The, Tomkin, Wane, Wane, Welty   +28 more
core   +2 more sources

How to Imagine Educational AI: The Filling of a Pail or the Lighting of a Fire?

Educational Theory, EarlyView.
Abstract Recent advances in artificial intelligence (e.g., machine learning, generative AI) have led to increased interest in its application in educational settings. AI companies hope to revolutionize teaching and learning by tailoring material to the individual needs of students, automating parts of teachers' jobs, or analyzing educational data to ...
Michał Wieczorek, Alberto Romele
wiley   +1 more source

Determining the Methanol Deuteration in the Disk Around V883 Orionis with Laboratory Measured Spectroscopy

The Astronomical Journal
Deuterium fractionation, as studied through mono-deuterated methanol, is frequently used as a diagnostic tool to trace the physical conditions and chemical evolution of interstellar sources. This study investigates methanol deuteration in the disk around
Shaoshan Zeng, Jae-Hong Jeong, Takahiro Oyama, Jeong-Eun Lee, Yao-Lun Yang, Nami Sakai   +5 more
doaj   +1 more source

Ryugu Reference Project: Recommendations from the Measurement Definition Team

Meteoritics &Planetary Science, EarlyView.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

On the chemistry of hydrides of N atoms and O$^+$ ions [PDF]

, 2016
Previous work by various authors has suggested that the detection by Herschel/HIFI of nitrogen hydrides along the low density lines of sight towards G10.6-0.4 (W31C) cannot be accounted for by gas-phase chemical models.
Awad, Zainab, Viti, Serena, Williams, David A.   +2 more
core   +2 more sources

Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements $_{26}$Fe through $_{40}$Zr [PDF]

, 2016
We report abundances of elements from $_{26}$Fe to $_{40}$Zr in the cosmic radiation measured by the SuperTIGER (Trans-Iron Galactic Element Recorder) instrument during 55 days of exposure on a long-duration balloon flight over Antarctica.
Binns, W. R., Brandt, T. J., Hams, T., Israel, M. H., Labrador, A. W., Link, J. T., Mewaldt, R. A., Mitchell, J. W., Murphy, R. P., Rauch, B. F., Sakai, K., Sasaki, M., Stone, E. C., Waddington, C. J., Walsh, N. E., Ward, J. E., Wiedenbeck, M. E.   +16 more
core   +3 more sources

Interstellar Atomic Abundances

, 2003
A broad array of interstellar absorption features that appear in the ultraviolet spectra of bright sources allows us to measure the abundances and ionization states of many important heavy elements that exist as free atoms in the interstellar medium.
openaire   +2 more sources

Two Extrasolar Asteroids with Low Volatile-Element Mass Fractions

, 2012
Using ultraviolet spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope, we extend our previous ground-based optical determinations of the composition of the extrasolar asteroids accreted onto two white dwarfs, GD 40 and ...
Armitage, B. Klein, B. Zuckerman, Baer, Bergeron, Bond, Brugamyer, D. Koester, Debes, Debes, Desharnais, Dixon, Dufour, Farihi, Farihi, Friedrich, Gonzalez Hernandez, Jewitt, Jura, Jura, Jura, Jura, Jura, Jura, Jura, Klein, Klein, Koester, Kriss, Lecar, Lee, Lehner, Lodders, M. Jura, Melis, S. Xu, Schuler, Tatischeff, Tayal, Xu, Zuckerman, Zuckerman, Zuckerman   +42 more
core   +1 more source