Results 21 to 30 of about 1,114,432 (235)

Orbital Elements of visual binary stars with very short arcs: With application to double stars from the 1829 southern double star catalog of James Dunlop [PDF]

, 2022
Binary double stars are those whose binding energies are less than zero. Obtaining binary star orbits from short arcs has been a long-standing problem in astrophysics.
Roderick R. Letchford, Carolyn J. Brown, Brown, Carolyn J., White, Graeme L., Graeme L. White, Letchford, Roderick R.   +5 more
core   +1 more source

New spectroscopic binary companions of giant stars and updated metallicity distribution for binary systems [PDF]

, 2016
We report the discovery of 24 spectroscopic binary companions to giant stars. We fully constrain the orbital solution for 6 of these systems. We cannot unambiguously derive the orbital elements for the remaining stars because the phase coverage is ...
Vanzi, L., Wittenmyer, R., Drass, H, L. Vanzi, Jenkins, J., Wittenmyer, R. A., Bluhm, P., Rojo, P, Bluhm, P, Voss, J., Vuckovic, M, Wittenmyer, RA, Soto, M., Vuckovic, M., H. Drass, Vanzi, Leonardo, Jenkins, James Stewart, Jones, M. I., C. H. F. Melo, Rojo, P., Olivares, F., Drass, H., Jones, MI, P. Rojo, Soto, M. G, Melo, CHF, R. A. Wittenmyer, F. Olivares, M. Vučković, Mennickent, R. E., Jenkins, J. S., Jones Fernández, Matías Ignacio, Melo, C. H. F., Vanzi, L, Soto, M. G., Olivares, F, M. G. Soto, J. Vos, P. Bluhm, Drass, Holger, J. S. Jenkins, R. E. Mennickent, Mennickent, RE, Melo, C., Jenkins, JS, Mennickent, R., Voss, J, Vos, J., M. I. Jones, Soto, MG   +49 more
core   +1 more source

The peculiar symbiotic object V1329 Cygni: single-star versus binary models [PDF]

International Astronomical Union Colloquium, 1982
The variable emission-line object V1329 Cyg (= HBV 475) was discover red by Kohoutek (1969).Crampton and Grygar (1969) identified more than 100 emission lines in the blue portion of the spectrum, while Andrillat (1969) found evidence for the late-type (M) spectrum in the near infrared. This justified the classification of the object among the symbiotic
Jiri Grygar, Drahomir Chochol
openaire   +2 more sources

UV Properties of Symbiotic Stars [PDF]

, 1983
Observations of symbiotic stars in the far ultraviolet with the IUE are reported.
Kafatos, Menas
core   +1 more source

A Non-Eclipsing Binary Model of the Symbiotic Star AG Dra [PDF]

Symposium - International Astronomical Union, 1987
The light variation of AG Dra is considered as a result of a variation of free-free emission from a gaseous envelope around the hot component. The emission measure of the envelope at a light maximum is estimated to be about Ne2V = 6.5 × 1059 cm−3. The amplitude of the light variation in the U band should be less than 1.4 mag.
openaire   +1 more source

Suspected symbiotic stars [PDF]

, 2022
During 1987 we were engaged in a program of observation of planetary nebulae and symbiotic stars. The program included a group of five objects classified as suspected symbiotic stars: CD-3608436, Sa3-43, 1 Th4-4, V3804 Sgr and He2-104.
Moreno, H., Gutiérrez Moreno, A.
core  

The Symbiotic Neutron Star Binary GX 1+4/V2116 Ophiuchi [PDF]

The Astrophysical Journal, 1997
46 pages including 7 PS figures.
Chakrabarty, Deepto, Roche, Paul
openaire   +2 more sources

The magnetosphere of the close accreting PMS binary V4046 Sgr [PDF]

, 2014
SGG acknowledges support from the Science & Technology Facilities Council (STFC) via an Ernest Rutherford Fellowship [ST/J003255/1]. GAW is supported by a Discovery Grant from the Natural Science & Engineering Research Council of Canada (NSERC).V4046 ...
Damiani, F., V. R. Holzwarth, Audard, M., Audard, M, Güdel, M, J.-F. Donati, Gregory, S. G.; id_orcid, S. H. P. Alencar, D. P. Huenemoerder, Wade, G. A., Huenemoerder, D. P, Sacco, G. G, Holzwarth, V.R., Wade, G.A., Argiroffi C., Maggio, A, Kastner, J.H., C. Argiroffi, Kastner J. H., Hussain, G. A. J, Bouvier, J, M. Audard, Alencar, S. H. P, Sacco, G. G., Huenemoerder, D.P., Holzwarth V. R., Huenemoerder D. P., Gregory, S.G., Hussain, G. A. J., Maggio, A., Damiani F., A. Maggio, ARGIROFFI, Costanza, Donati, J.-F., Damiani, F, Audard, Marc, F. Damiani, Sacco G. G., Hussain, G.A.J., Alecian, E., Sacco, G.G., Montmerle, T, Donati J.-F., Alencar S. H. P., Güdel, M., Argiroffi, C., Kastner, J. H., Alecian, E, Alencar, S.H.P., Gregory, S. G, Gregory, S. G., Montmerle T., G. A. J. Hussain, Donati, J. -F., Alencar, S. H. P., Audard M., E. Alecian, Kastner, J. H, T. Montmerle, Montmerle T, J. Bouvier, Wade G. A., Donati, J. F, J. H. Kastner, G. G. Sacco, Holzwarth, V. R., Bouvier, J., Alecian E., M. Güdel, Bouvier J., Gregory S. G., G. A. Wade, Güdel M., Montmerle, T., Huenemoerder, D. P., Maggio A., Holzwarth, V. R, S. G. Gregory, Hussain G. A. J.   +78 more
core   +1 more source

Illumination in Symbiotic Binary Stars: Non‐LTE Photoionization Models. II. Wind Case [PDF]

The Astrophysical Journal, 1998
We describe a non-LTE photoionization code to calculate the wind structure and emergent spectrum of a red giant wind illuminated by the hot component of a symbiotic binary system. We consider spherically symmetric winds with several different velocity and temperature laws and derive predicted line fluxes as a function of the red giant mass loss rate ...
Proga, Daniel, Kenyon, Scott J., Raymond, John C.   +2 more
openaire   +2 more sources

The Central Binary and Surrounding Nebula of the Symbiotic Star V1016 Cygni

The Astrophysical Journal, 2002
We present HST/WFPC2 images of the symbiotic star V1016 Cyg which, for the first time, directly explore the inner regions of the nebula to AU scales at optical wavelengths. They also suggest that the [OIII] 4959,5007 emission takes place in a bipolar outflow.
Eyres, S., Crocker, M., Davis, R., Taylor, A., Brocksopp, C., Bode, M.   +5 more
openaire   +2 more sources