Letter: SDSS J013655.91+242546.0 – an A-type hyper-velocity star from the outskirts of the Galaxy

4 days ago

Recent articles in Astronomy and Astrophysics: Authors: A. Tillich, N. Przybilla, R.-D. Scholz and U. Heber A&A 507, L37 (2009) Received 24 August 2009 / Accepted 24 October 2009 Keywords: stars: kinematics, stars: individual: SDSSJ013655.91+242546.0, stars: atmospheres, (Read More)

News Network: Planetary Science

X-ray optical depth diagnostics of T Tauri accretion shocks

4 days ago

Recent articles in Astronomy and Astrophysics: Authors: C. Argiroffi, A. Maggio, G. Peres, J. J. Drake, J. López-Santiago, S. Sciortino and B. Stelzer A&A 507, 939 (2009) Received 30 June 2009 / Accepted 25 August 2009 Keywords: stars: atmospheres, stars: coronae, stars: (Read More)

News Network: Planetary Science

Notes on disentangling of spectra - II. Intrinsic line-profile variability due to Cepheid pulsations

Nov 12, 2009

Recent articles in Astronomy and Astrophysics: Authors: P. Hadrava, M. Šlechta and P. Škoda A&A 507, 397 (2009) Received 22 May 2009 / Accepted 2 August 2009 Keywords: line: profiles, techniques: spectroscopic, stars: variables: Cepheids, stars: atmospheres. (Read More)

News Network: Planetary Science

Does the HD 209458 planetary system pose a challenge to the stellar atmosphere models?

Nov 04, 2009

Recent articles in Astronomy and Astrophysics: Author: A. ClaretA&A 506, 1335 (2009) Received 4 May 2009 / Accepted 8 July 2009 Keywords: stars: atmospheres, planetary systems. (Read More)

News Network: Planetary Science

Dust in brown dwarfs and extra-solar planets - II. Cloud formation for cosmologically evolving abundances

Nov 04, 2009

Recent articles in Astronomy and Astrophysics: Authors: S. Witte, Ch. Helling and P. H. Hauschildt A&A 506, 1367 (2009) Received 11 December 2008 / Accepted 21 August 2009 Keywords: astrochemistry, methods: numerical, stars: atmospheres, stars: low-mass, brown dwarfs. (Read More)

News Network: Planetary Science

Topic: Planets

Radiative hydrodynamics simulations of red supergiant stars - I. interpretation of interferometric observations

Nov 04, 2009

Recent articles in Astronomy and Astrophysics: Authors: A. Chiavassa, B. Plez, E. Josselin and B. Freytag A&A 506, 1351 (2009) Received 3 February 2009 / Accepted 14 July 2009 Keywords: stars: supergiants, stars: atmospheres, hydrodynamics, radiative transfer, techniques: (Read More)

News Network: Planetary Science

Analysis of hydrogen-rich magnetic white dwarfs detected in the Sloan Digital Sky Survey

Nov 04, 2009

Recent articles in Astronomy and Astrophysics: Authors: B. Külebi, S. Jordan, F. Euchner, B. T. Gänsicke and H. Hirsch A&A 506, 1341 (2009) Received 25 May 2009 / Accepted 8 July 2009 Keywords: stars: white dwarfs, stars: magnetic fields, stars: atmospheres. (Read More)

News Network: Planetary Science

Letter: A new extremely low-mass white dwarf in the NLTT catalogue

Oct 27, 2009

Recent articles in Astronomy and Astrophysics: Authors: A. Kawka and S. Vennes A&A 506, L25 (2009) Received 22 July 2009 / Accepted 14 September 2009 Keywords: white dwarfs, stars: individual: NLTT 11748, stars: atmospheres. (Read More)

News Network: Planetary Science

Abundance analysis of prime B-type targets for asteroseismology - II. B6–B9.5 stars in the field of view of the CoRoT satellite

Oct 21, 2009

Recent articles in Astronomy and Astrophysics: Authors: E. Niemczura, T. Morel and C. Aerts A&A 506, 213 (2009) Received 23 February 2009 / Accepted 24 May 2009 Keywords: stars: abundances, stars: atmospheres, stars: chemically peculiar. (Read More)

News Network: Planetary Science

Hydrodynamical simulations of convection-related stellar micro-variability - II. The enigmatic granulation background of the CoRoT target HD 49933

Oct 21, 2009

Recent articles in Astronomy and Astrophysics: Authors: H.-G. Ludwig, R. Samadi, M. Steffen, T. Appourchaux, F. Baudin, K. Belkacem, P. Boumier, M.-J. Goupil and E. Michel A&A 506, 167 (2009) Received 23 February 2009 / Accepted 17 April 2009 Keywords: convection, hydrody (Read More)

News Network: Planetary Science

ResearchNote: Modelling convection in A star atmospheres - Bisectors and lineshapes of HD 108642

Oct 15, 2009

Recent articles in Astronomy and Astrophysics: Author: Ch. StützA&A 505, 1233 (2009) Received 30 January 2009 / Accepted 3 July 2009 Keywords: convection, stars: atmospheres, line: profiles, turbulence, stars: individual: HD 108642. (Read More)

News Network: Planetary Science

Letter: Lithium in the globular cluster NGC 6397 - Evidence for dependence on evolutionary status

Oct 08, 2009

Recent articles in Astronomy and Astrophysics: Authors: J. I. González Hernández, P. Bonifacio, E. Caffau, M. Steffen, H.-G. Ludwig, N. T. Behara, L. Sbordone, R. Cayrel and S. Zaggia A&A 505, L13 (2009) Received 17 June 2009 / Accepted 3 September 2009 Keywords: stars: (Read More)

News Network: Planetary Science

Na-O anticorrelation and HB - VIII. Proton-capture elements and metallicities in 17 globular clusters from UVES spectra

Oct 01, 2009

Recent articles in Astronomy and Astrophysics: Authors: E. Carretta, A. Bragaglia, R. Gratton and S. Lucatello A&A 505, 139 (2009) Received 18 March 2009 / Accepted 31 May 2009 Keywords: stars: abundances, stars: atmospheres, stars: population II, Galaxy: globular cluster (Read More)

News Network: Planetary Science

Structure and spectra of irradiated secondaries in close binaries - A model calculation of the pre-cataclysmic variable UU Sagittae

Oct 01, 2009

Recent articles in Astronomy and Astrophysics: Authors: A. C. Wawrzyn, T. S. Barman, H. M. Günther, P. H. Hauschildt and K. M. Exter A&A 505, 227 (2009) Received 4 February 2009 / Accepted 24 June 2009 Keywords: radiative transfer, stars: abundances, binaries: eclipsing, (Read More)

News Network: Planetary Science

Na-O anticorrelation and HB - VII. The chemical composition of first and second-generation stars in 15 globular clusters from GIRAFFE spectra

Oct 01, 2009

Recent articles in Astronomy and Astrophysics: Authors: E. Carretta, A. Bragaglia, R. G. Gratton, S. Lucatello, G. Catanzaro, F. Leone, M. Bellazzini, R. Claudi, V. D'Orazi, Y. Momany, S. Ortolani, E. Pancino, G. Piotto, A. Recio-Blanco and E. Sabbi A&A 505, 117 (2009) Re (Read More)

News Network: Planetary Science

Water ice exposed!

Sep 25, 2009

Submitted by coreburn from Google Reader: Ice excavated from the subsurface, by a crater 6m (20 feet) in diameter, sublimates away over the course of the martian summer. Each of these HiRISE images are 35m (115 feet) across and were taken in October 2008 and Janua (Read More)

News Networks: Tech News, Arts & Entertainment, Media & Technology ...

Topics: Climate, Science, Media ...

Synthetic photometry for carbon rich giants - I. Hydrostatic dust-free models

Sep 03, 2009

Recent articles in Astronomy and Astrophysics: Authors: B. Aringer, L. Girardi, W. Nowotny, P. Marigo and M. T. Lederer A&A 503, 913 (2009) Received 22 January 2009 / Accepted 5 April 2009 Keywords: stars: late-type, stars: AGB and post-AGB, stars: atmospheres, infrared: (Read More)

News Network: Planetary Science

Atmospheric velocity fields in tepid main sequence stars

Sep 03, 2009

Recent articles in Astronomy and Astrophysics: Authors: J. D. Landstreet, F. Kupka, H. A. Ford, T. Officer, T. A. A. Sigut, J. Silaj, S. Strasser and A. Townshend A&A 503, 973 (2009) Received 16 March 2009 / Accepted 11 June 2009 Keywords: convection, stars: atmospheres, (Read More)

News Network: Planetary Science

Statistical equilibrium of silicon in the atmospheres of metal-poor stars

Aug 26, 2009

Recent articles in Astronomy and Astrophysics: Authors: J. R. Shi, T. Gehren, L. Mashonkina and G. Zhao A&A 503, 533 (2009) Received 16 March 2009 / Accepted 6 May 2009 Keywords: line: formation, line: profiles, stars: abundances, stars: late-type, Galaxy: evolution. (Read More)

News Network: Planetary Science

New extended atomic data in cool star model atmospheres - Using Kurucz's new iron data in MAFAGS-OS models

Aug 18, 2009

Recent articles in Astronomy and Astrophysics: Authors: F. Grupp, R. L. Kurucz and K. Tan A&A 503, 177 (2009) Received 8 April 2009 / Accepted 14 June 2009 Keywords: atomic data, Sun: abundances, stars: abundances, stars: atmospheres, stars: fundamental parameters, stars (Read More)

News Network: Planetary Science

Topic: Sun