CVUV Search Output Columns

This document defines the catalog entries describing the CVUV Data Archive.

Mark
Clicking on this box will mark the entry for retrieval.

To Retrieve:
The selected datasets will be downloaded in a single file. You may select the file type: .tar, .tar.gz, .tar.Z, and .zip. After selecting the file type, click on the "Download selected files" button and the selected files will be downloaded to your disk.

To Coplot:
After selecting up to 15 observations to be plotted, click on the "Plot marked spectra" button to coplot the selected observations.

The spectra that you selected will be automatically scaled to the full range of wavelengths and nearly the full range of fluxes (i.e., y axis plot scale runs from 0 (or .25 * the minimum flux for spectra with negative fluxes) to the 10th highest flux). Each spectrum is automatically assigned a color, up to a maximum of 15. The spectra are labelled by their dataset names, with a summary of the datasets plotted given below the plot. After inspecting the plot, you may wish to change the selection of datasets which are displayed. Use your browser "Back" button to do this.

Plot range
Adjust the minimum and maximum wavelengths (in Ångstroms) and minimum and maximum fluxes (in erg /cm2/sec/Å) to select the spectral region of interest and to exclude noisy data.

Plot dimensions
Adjust the X size and Y size in pixels to create the size of plot desired. The maximum dimensions ar e 850 by 640 pixels.

Redraw plot
Use this button to replot the spectra when you have changed the plot range or plot dimensions.

Column Information

Data ID

Uniquely identifies a dataset.;
vwhyi, ektra

Target Name

Target name: Name of the system as it was entered in the MAST database when the original observations were carried out. For most of the systems it is the name defined for the variable as given in the Ritter and Kolb Catalog of CVs. For less common objects, it is the name given in the Downes et al. Catalog of CVs.
Examples: VW Hyi, V1040 Cen, V Sge

RA (J2000)

Right Ascension (J2000)
Range: 0 to 360 deg

Dec (J2000)

Declination (J2000)
Range: -90 to +90 deg

Type

Type of Cataclysmic Variable. We define four types.
Examples: DN: Dwarf Nova NL: Nova-Like Mg: Magnetic Systems Msc: Miscellaneous variables

Subtype

Subtype: The objects are further divided into subtypes.
Examples: DN Subtype: UG - U Gem Z - Z Cam SS - SS Cyg WZ - WZ Sge SU - SU UMa NL Subtype: VY - VY Scl (anti-DN) UX - UX UMa SW - SW Sex Mg Subtype: IP - Intermediate Polar (with a moderately strong magnetic field; distrupted inner disk) P - Polar (with a strong magnetic field; devoided of disk) DQ - DQ Her AM - AM Her Msc Sub Type: N - Nova (all types of Novae) CV - all other types/subtype of Cataclysmic Variables

P(hr)

Period of the binary (if known) given in hour
Example: 4.47

i(deg)

The inclination i of the system (if known) given in degrees. It is also the inclination used in the modeling of the synthetic disk spectrum to fit the observed spectrum
Range: 0 to 90 Example: 15

E(B-V)

Reddening (extinction) toward the object. The spectrum was dereddened assuming this value prior to the spectral fit.
Example: 0.07

Mwd/Msun

Mass of the WD of the system given in units of solar mass. Mass is usually taken from the literature and is left blank if unknown.
Range: 0-1.29; Example: 0.86

Twd(K)

This is the effective surface temperature of the WD (in Kelvin) used to generate the stellar atmosphere model to fit to the observed spectrum.
Range: 1000K to 100,000K; Example: 22000 (no coma)

Rotv (km/s)

Projected rotational velocity of the WD (km/sec) used to generate the line broadening of the stellar atmosphere model in the fit to the observed spectrum.
Range: 0 and a few 1000km/sec; Example: 200

C

Carbon
0.25

C

Carbon
0.25 solar

Si

Silicon
Example: 1.8 solar

Si

Silicon
Example: 1.8 solar

N

Nitrogen
Example: 3.0 solar

N

Nitrogen
Example: 3.0 solar

S

Sulfur
Example: 10.0 solar

S

Sulfur
Example: 10.0 Solar

Abundances

Solar, Non-Solar, N/C > 10

d(pc)

Distance to the object in parsec and/or it is the distance used in the spectral modeling to fit the observed spectrum
Example: 212 parsecs

Log(Mdot)

Mass accretion rate in Log units of solar mass per year that was used in the spectral disk modeling to fit the observed spectrum.
Range: -12.0 to -8.0; Examples: -8.5