Results 21 to 30 of about 14,115,145 (304)

The Cosmic Near Infrared Background: Remnant Light From Early Stars [PDF]

, 2008
The redshifted ultraviolet light from early stars at z similar to 10 contributes to the cosmic near infrared background (NIRB). We present detailed calculations of its spectrum with various assumptions about metallicity and mass spectrum of the early ...
Eiichiro Komatsu, Komatsu, E., Fernandez, E. R., Elizabeth R. Fernandez   +3 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
West, Richard G., Pollacco, Don, M. Gallaway, Street, R. A., Horne, K. (Keith), Kane, S. R., Christian, Damian Joseph, D. J. Christian (7603835), Hellier, Coel, Enoch, B., Nicholas, J. P., D. Pollacco (7603205), Irwin, J., Skillen, I., B. Enoch (7603838), West, R. G., R. A. Street, D. J. Christian, T. A. Lister (7603856), Irwin, Jonathan, K. Horne, Ryans, R., C. A. Haswell, D. M. Wilson (2428792), Wilson, D. M., Christian, D. J., J. P. Nicholas (7614728), S. R. Kane (7603853), S. R. Kane, Haswell, C. A., J. P. Nicholas, B. Enoch, C. Hellier (7603562), Norton, A. J., W. I. Clarkson, R. G. West, Lister, T. A., W. I. Clarkson (7612619), West, R .G., J. Irwin, Gallaway, M., T. A. Lister, Collier Cameron A (7614731), Pollacco, D., Parley, N., K. Horne (7603850), R. Ryans, C. A. Haswell (7603844), P. J. Wheatley (7590065), Hellier, C., Norton, Andrew J., R. Ryans (7612838), N. Parley, D. M. Wilson, Parley, N. R., I. Skillen (7601975), A. J. Norton (7603859), Horne, Keith Douglas, Horne, K. D., I. Skillen, R. G. West (7602272), A. Collier Cameron, J. Irwin (7606340), P. J. Wheatley, C. Hellier, R. A. Street (7603868), M. Gallaway (7614725), N. Parley (7603862), Cameron, Andrew Collier, Collier Cameron, A., Clarkson, W. I., Kane, Sharad R., Wheatley, P. J., A. J. Norton, Wilson, D. M. (David M.), D. Pollacco, Cameron, Andrew Collier; id_orcid   +76 more
core   +1 more source

Star Formation Under Cosmological Conditions [PDF]

EPJ Web of Conferences, 2020
The first stars have transformed the universe from the infrared background to the light. Thereby, this so called “dark age” ended by re-ionization through the ultraviolet light of the first stars.
El Eid Mounib F., Saad Cynthia
doaj   +1 more source

Black Hole Feedback On The First Galaxies [PDF]

, 2012
We study how the first galaxies were assembled under feedback from the accretion onto a central black hole (BH) that is left behind by the first generation of metal-free stars through self-consistent, cosmological simulations.
Greif, T. H., Ralf S. Klessen, Klessen, R. S., Miloš Milosavljević, Glover, S. C. O., Myoungwon Jeon, Pawlik, A. H., Thomas H. Greif, Jeon, M., Bromm, V., Volker Bromm, Andreas H. Pawlik, Simon C. O. Glover, Milosavljevic, M.   +13 more
core   +1 more source

The first stars: CEMP-no stars and signatures of spinstars [PDF]

Astronomy & Astrophysics, 2015
(Abridged) The CEMP--no stars are "carbon-enhanced-metal-poor" stars that in principle show no evidence of s-- and r--elements from neutron captures. We try to understand the origin and nucleosynthetic site of their peculiar CNO, Ne--Na, and Mg--Al abundances.
{Maeder} A., {Meynet} G., {Chiappini} C.
openaire   +2 more sources

The First Stars

Annual Review of Astronomy and Astrophysics, 2004
▪ Abstract  We review recent theoretical results on the formation of the first stars in the universe, and emphasize related open questions. In particular, we discuss the initial conditions for Population III star formation, as given by variants of the cold dark matter cosmology.
Bromm, Volker, Larson, Richard B.
openaire   +2 more sources

The origin of the first neutron star – neutron star merger [PDF]

Astronomy & Astrophysics, 2018
The first neutron star-neutron star (NS-NS) merger was discovered on August 17, 2017 through gravitational waves (GW170817) and followed with electromagnetic observations. This merger was detected in an old elliptical galaxy with no recent star formation. We perform a suite of numerical calculations to understand the formation mechanism of this merger.
Belczynski, K., Askar, A., Arca-Sedda, M., Chruslinska, M., Donnari, M., Giersz, M., Benacquista, M., Spurzem, R., Jin, D., Wiktorowicz, G., Belloni, D.   +10 more
openaire   +5 more sources

A near-infrared interferometric survey of debris disc stars. III. First statistics based on 42 stars observed with CHARA/FLUOR [PDF]

, 2013
peer reviewedContext. Dust is expected to be ubiquitous in extrasolar planetary systems due to the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known due to the high contrast and small angular separation with ...
Mérand, Antoine, Augereau, J. -C., Sturmann, Laszlo, Hanot, C., Monnier, J. D., E. Di Folco, Augereau, Jean-Charles, C. Hanot, J.-C. Augereau, McAlister, Harold, Mollier, Benjamin, Tuthill, Peter, Che, X., Tuthill, P. G., J. D. Monnier, Absil, O., Monnier, John, N. Turner, Kervella, Pierre, P. Kervella, Ertel, Steve, Sturmann, Judit, L. Sturmann, Absil, Olivier, Scott, Nicholas, Ertel, S., Defrère, D., Foresto, V. Coudé Du, V. Coudé du Foresto, Sturmann, L., ten Brummelaar, T. A., H. A. McAlister, Che, Xiao, ten Brummelaar, Theo, McAlister, H. A., Mérand, A., B. Mollier, D. Defrère, Scott, N., Thureau, N., Di Folco, E., P. G. Tuthill, Mollier, B., Coudé du Foresto, Vincent, Kervella, P., Turner, N., Brummelaar, T. A. Ten, A. Mérand, Turner, Nils, T. A. ten Brummelaar, Defrere, Denis, Scott, Nicholas William, N. Scott, Hanot, Charles, O. Absil, Coudé du Foresto, V., Thureau, Nathalie Danielle, N. Thureau, S. Ertel, X. Che, Di Folco, Emmanuel, Thureau, Nathalie, Sturmann, J., J. Sturmann   +63 more
core   +1 more source

The infrared glow of the first stars [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2006
Abstract Kashlinsky et al. find a significant cosmic infrared background fluctuation excess on angular scales ≳50 arcsec that cannot be explained by instrumental noise or local foregrounds. The excess has been tentatively attributed to emission from primordial, very massive (Population III, hereafter PopIII) stars formed ≤ 200 Myr after ...
SALVATERRA, R, MAGLIOCCHETTI, M, FERRARA, ANDREA, SCHNEIDER, R.   +3 more
openaire   +4 more sources

Machine Learning Detects Multiplicity of the First Stars in Stellar Archaeology Data

The Astrophysical Journal, 2023
In unveiling the nature of the first stars, the main astronomical clue is the elemental compositions of the second generation of stars, observed as extremely metal-poor (EMP) stars, in the Milky Way.
Tilman Hartwig, Miho N. Ishigaki, Chiaki Kobayashi, Nozomu Tominaga, Ken’ichi Nomoto   +4 more
doaj   +1 more source