Results 41 to 50 of about 2,099,705 (77)

X-ray observations of AM Herculis from OSO-8 [PDF]

, 1979
The white dwarf binary system AM Herculis (2A1815+500) was observed in X-rays at both low energies (E less 10 keV) and higher energies. The exact shape of the spectrum, particularly at the higher energies, has yet to be determined.
Frost, K. J., Dennis, B. R., Orwig, L. E., Crannell, C. J., Dolan, J. F., Coe, M. J.   +5 more
core  

Indirekte Abbildungsverfahren angewandt auf AM Herculis-Sterne

, 2005
AM Herculis-Sterne sind enge Doppelsterne, die aus einem weißen Zwerg mit starkem Magnetfeld und einem Hauptreihenstern bestehen. Letzterer verliert Materie an den weißen Zwerg, wobei das Magnetfeld die Materie zu den Magnetpolen leitet, wo die ...
Staude, Andreas
core   +1 more source

Kepler observations of Am stars [PDF]

, 2017
We present an analysis of high-resolution spectra for two pulsating Am stars in the Kepler field. The stellar parameters derived in this way are important because parameters derived from narrow-band photometry may be affected by the strong metal lines in
Eyer, L., Southworth, J., Leccia, S., Christensen-Dalsgaard, J., Caldwell, D. A., Van Cleve, J., Van Winckel, H., Smalley, B., Kjeldsen, H., Uytterhoeven, K., De Cat, P., Kurtz, D. W., Balona, L. A., Girouard, F. R., Catanzaro, G., Ripepi, V., Grigahcène, A.   +16 more
core  

Laboratory analogue of a supersonic accretion column in a binary star system. [PDF]

Nat Commun, 2016
Cross JE, Gregori G, Foster JM, Graham P, Bonnet-Bidaud JM, Busschaert C, Charpentier N, Danson CN, Doyle HW, Drake RP, Fyrth J, Gumbrell ET, Koenig M, Krauland C, Kuranz CC, Loupias B, Michaut C, Mouchet M, Patankar S, Skidmore J, Spindloe C, Tubman ER, Woolsey N, Yurchak R, Falize É.   +24 more
europepmc   +1 more source

Formation of high-field magnetic white dwarfs from common envelopes. [PDF]

Proc Natl Acad Sci U S A, 2011
Nordhaus J, Wellons S, Spiegel DS, Metzger BD, Blackman EG.   +4 more
europepmc   +1 more source

Herculis Ciofani Sulmonensis in P. Ovidii Nasonis : Libros de Ponto : Observationes

Con: Antiquiss a Nobiliss urbis sulmonis descriptio... con port e pax. propias -- Con: Herculis Ciofani Sulmoniensis in P. Ovisçdii Nasonis Halieuticon... con port. e pax. propias -- Con: Herculis Ciofani Sulmoniensis in P.
Ex offiina Christophoti Plantini, Ovidio Nasón, Publio, Ciofani, Herculis   +2 more
core  

Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars

, 2017
We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic Optical Telescope. We provide spectral types, atmospheric parameters and chemical abundances for 50 stars.
S. J. Murphy, J. M. Lykke, G. Michalska, M. Polińska, Lykke, Julie Maria, B. Smalley, Triviño Hage, A., A. Triviño Hage, Smalley, B., E. Niemczura, K. Uytterhoeven, Uytterhoeven, K., Michalska, G., Polińska, M., J. Jessen-Hansen, Kołaczkowski, Z., Kolaczkowski, Z., Jessen-Hansen, J., Z. Kołaczkowski, Niemczura, E., Murphy, S. J., Lykke, J. M.   +21 more
core   +1 more source

On the Material Ejected from Novae. [PDF]

Proc Natl Acad Sci U S A, 1942
Payne-Gaposchkin C, Gaposchkin S.
europepmc   +1 more source

Accretion and magnetic field structure in AM Herculis systems

, 2015
Detailed spectroscopic studies of the magnetic white dwarfs in the AM Herculis type systems have shown that in most systems the magnetic white dwarf has two dominant poles with field strengths that differ by a factor ~1.5-2 indicating non dipolar field ...
Wickramasinghe, Dayal, Ferrario, Lilia
core  

Notes on Binary Stars: V. The Determination by Least-Squares of the Elements of Spectroscopic Binaries. [PDF]

Proc Natl Acad Sci U S A, 1941
Sterne TE.
europepmc   +1 more source