Multiwavelength Optical Observations of Chromospherically Active Binary Systems

@article{Montes1997MultiwavelengthOO,
  title={Multiwavelength Optical Observations of Chromospherically Active Binary Systems},
  author={David Montes and Jorge Sanz-Forcada and Mar{\'i}a Jos{\'e} Fern{\'a}ndez-Figueroa and E. de Castro and Manuel Cornide and Lawrence W. Ramsey},
  journal={Astrophysics and Space Science},
  year={1997},
  volume={263},
  pages={279-282}
}
We summarize here our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems, using the information provided for several optical spectroscopic features, that are formed at different heights in the chromosphere. 

Chromospheric activity in bright contact binary stars

Context. Studying chromospheric activity of contact binaries is an effective way of revealing the magnetic activity processes of these systems. One efficient but somewhat neglected method for this

Chromospheric activity in several single late-type stars

New high-resolution echelle spectra of six single late-type Pleiades-like stars (V368 Cep, EP Eri, DX Leo, GJ 211, PW And and V383 Lac) were obtained with the 2.16 meter telescope at Xinglong Station

Starspots and active regions on the chromospherically active binary MS Ser

The quasisimultaneous electrophotometric, polarimetric and spectroscopic observations of the chromospherically active binary MS Ser are presented. The photometric variability of the star can be

New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium

Aims. New high-resolution spectroscopic observations were made for the RS CVn-type binary SZ Psc aimed at searching for evidence of stellar prominences in this system and studying its chromospheric

Photospheric and chromospheric active regions on three single-lined RS CVn binaries

A monitoring of three active RS CVn binaries has been performed with medium resolution spectroscopy with the aim of investigating the behavior of chromospheric and photospheric inhomogeneities.

Chromospheric activity on the RS CVn-type binary UX Arietis

High resolution spectroscopic observations of UX Ari made during three observing seasons in 2000 have been analyzed by means of the spectral subtraction technique. The information about chromospheric

CHROMOSPHERIC ACTIVITY AND ROTATIONAL MODULATION ON THE YOUNG, SINGLE K2 DWARF LQ Hya

High-resolution echelle spectra of LQ Hya, obtained during several observing runs from 2006 to 2012, have been analyzed to study its chromospheric activity. Using the spectral subtraction technique,

Long-term chromospheric activity of non-eclipsing RS CVn-type stars

Context. The IUE database provides several UV high and low-resolution spectra of RS CVn-type stars from 1978 to 1996. In particular, many of these stars were monitored continuously during several

Study of photospheric, chromospheric and coronal activities of V1147 Tau

We present analyses of optical photometric, spectroscopic, polarimetric and X-ray observations of the K5V binary star, V1147 Tau. Nearly 20 yr of optical observations show that V1147 Tau is a

Echelle observations of chromospheric activity in post-common-envelope binaries

We present high-resolution echelle spectroscopy that confirms, via the identification of numerous chromospheric emission lines, the extremely high levels of chromospheric activity displayed by the
...

References

SHOWING 1-10 OF 64 REFERENCES

Eclipse Observations of RS CVn Binaries. I. A Survey for Extended Matter

We survey a number of RS CVn systems to determine the frequency and nature of circumstellar matter in these chromospherically active binaries. A growing body of data suggests that large extended

CLASSIFICATION OF EUV STELLAR SOURCES DETECTED BY THE ROSAT WFC. I. PHOTOMETRIC AND RADIAL VELOCITY STUDIES

We present the results of high-precision photometric observations and of spectroscopic radial velocity measurements obtained at the European Southern Observatory for a sample of 51 cool stars

The A0 stars.

Comparaison des types spectraux et des classes de luminosite obtenus photometriquement avec ceux de deux etudes spectrales extensives couvrant le ciel entier. Les etoiles AO sont classees B9 a A1

G. P. Kuiper's spectral classifications of proper-motion stars

Liste des classifications spectrales de 3200 etoiles, ayant dans l'ensemble un grand mouvement propre, et ayant ete classees par Kuiper entre 1937 et 1944

A Mechanism for Orbital Period Modulation in Close Binaries

Some eclipsing variables are observed to undergo orbital period modulations of amplitude ΔP/P∼10 −5 over time scales of decades or longer. These modulations can be explained by the gravitational

RADIAL-VELOCITY STANDARD STARS.

The paper reports the results of applying an iterative procedure devised to establish a set of velocity standard stars for monitoring the behavior of the Fick Observatory photoelectric

A survey of chromospherically active stars

Photometric and/or spectroscopic observations have been obtained of 52 late-type stars which are suspected or known to be chromospherically active. Although not all types of observations were

Eclipse observations of an accretion disc wind

The Goddard High Resolution Spectrometer on the Hubble Space Telescope has been used to monitor, through eclipse, the C iv 1550-Â and He n 1640-Ä lines in the spectrum of the nova-like cataclysmic

Stellar atmospheres

Stellar Atmospheres.(Second edition). By D. Mihalas. Pp.631. (Freeman; San Francisco, 1978.) $24.95.

A photometric study of K and M dwarf stars found by Stephenson

Broadband photometry has been obtained for a sample of the K and M dwarf stars found in an objective prism survey by Stephenson. Among the stars with unknown proper motion, about 24% of those
...