Axel D. Schwope

The Seventh Data Release of the Sloan Digital Sky Survey (2009)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...

This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...

Cataclysmic Variables from SDSS VII. The Seventh Year (2006) (2009)

Szkody, Paula, Anderson, Scott F., Hayden, Michael, Kronberg, Martin, McGurk, Rosalie, Riecken, Thomas, ...

Coordinates, magnitudes and spectra are presented for 39 cataclysmic variables found in Sloan Digital Sky Survey spectra that were primarily obtained in 2006. Of these, 12 were CVs identified prior...

The Subaru/XMM-Newton Deep Survey (SXDS): III. X-Ray Data (2008)

Ueda, Yoshihiro, Watson, Michael G., Stewart, Ian M., Akiyama, Masayuki, Schwope, Axel D., Lamer, Georg, ...

We present the X-ray source catalog in the Subaru/XMM-Newton deep survey. A continuous area of 1.14 deg^2 centered at R.A. = 02h18m and Dec. = -05d is mapped by seven pointings with XMM-Newton...

The sixth data release of the Sloan Digital Sky Survey (2008)

Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Prieto, Carlos Allende, Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...

The sixth data release of the Sloan Digital Sky Survey (2008)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...

The sixth data release of the Sloan Digital Sky Survey (2008)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...

The sixth data release of the Sloan Digital Sky Survey (2008)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...

The sixth data release of the Sloan Digital Sky Survey (2008)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...

Spitzer IRS Spectroscopy of Intermediate Polars: Constraints on Mid-Infrared Cyclotron Emission (2006)

Harrison, Thomas E., Campbell, Ryan K., Howell, Steve B., Cordova, France A., Schwope, Axel D.

We present Spitzer Infrared Spectrograph (IRS) observations of eleven intermediate polars (IPs). Spectra covering the wavelength range from 5.2 to 14 $\mu$m are presented for all eleven objects, and...

The complex X-ray spectrum of the isolated neutron star RBS1223 (2006)

Schwope, Axel D., Hambaryan, Valeri, Haberl, Frank, Motch, Christian

We present a first analysis of a deep X-ray spectrum of the isolated neutron star RBS1223 obtained with XMM-Newton. Spectral data from four new monitoring observations in 2005/2006 were combined with...

Accretion Stream Mapping of HU Aquarii (2000)

Vrielmann, Sonja, Schwope, Axel D.

We present a new mapping algorithm, the "Accretion Stream Mapping (ASM)" which uses the full phase-coverage of a light curve to derive spatially resolved intensity distributions along the accretion...

Modelling of the magnetic accretion flow in HU Aquarii (1998)

Heerlein, Claus, Horne, Keith, Schwope, Axel D.

We present a magnetic stripping model for AM Her type objects. Our model is based on an equilibrium condition between ram pressure and magnetic pressure in a stiff dipolar magnetic field. We...

Tomography of Polars (1998)

Schwope, Axel D., Schwarz, Robert, Staude, Andreas, Heerlein, Claus, Horne, Keith, Steeghs, Danny

We are reviewing the power of Doppler tomography for detailed investigations of polars (magnetic cataclysmic binaries without accretion disk). Using high-resolution spectroscopy in combination with...

Accretion Stream Mapping (1998)

Vrielmann, Sonja, Schwope, Axel D.

We present a new mapping algorithm, the Accretion Stream Mapping, which uses the complete emission-line light curve to derive spatially resolved intensity distributions along the stream on a surface...

Polars -- multisite emission -- multiwavelength observation (1997)

Schwope, Axel D., Beuermann, K., Buckley, D. A. H., Ciardi, D., Cropper, M., Horne, K., ...

We review the main observational characteristics of AM Herculis stars (polars) at X-ray, EUV, UV, IR and optical wavelengths. Particular emphasis is given to multi-epoch, multi-wavelength...

Cyclotron spectroscopy of VV Puppis (1997)

Schwope, Axel D., Beuermann, Klaus

We present phase-resolved spectrophotometric observations of VV Puppis obtained during two different states of accretion. We confirm the detection of cyclotron lines from emission regions at both...

Phase-resolved spectroscopy and photometry of the eclipsing polar EP Draconis (=H1907+690) (1997)

Schwope, Axel D., Mengel, Sabine

We present phase-resolved optical spectroscopy and CCD photometry of the faint eclipsing polar EP Dra (H1907+690). A revised ephemeris is derived which connects all 32000 binary cycles since its...

On the mass of the white dwarf in UZ Fornacis (1997)

Schwope, Axel D., Mengel, Sabine, Beuermann, Klaus

We present phase-resolved spectroscopy of the eclipsing AM Herculis star UZ For obtained when the system was in its low state of accretion. Faint residual Halpha-emission and NaI absorption were used...

Phase-resolved high-resolution spectrophotometry of the eclipsing polar HU Aquarii (1997)

Schwope, Axel D., Mantel, Karl-Heinz, Horne, Keith

We present phase-resolved spectroscopy of the bright, eclipsing polar HU Aqr obtained with high time (~30sec) and spectral (1.6 A) resolution when the system was in a high accretion state. The...