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EPIC Search Output Columns


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

Mark
Clicking on entries in this column will mark the entry for retrieval. To mark all entries, click one of the buttons labelled 'Mark All','Mark public', or 'Mark Proprietary'. (Unmarking all entries can be done the same way using the appropriate button.) For missions with proprietary data, the mark button element will have a yellow background and a '@' symbol to indicate data sets not yet public.

To Retrieve:
Click the button labelled 'Submit marked data for retrieval from STDADS'. This will send all the marked data set names to the data retrieval page. Follow the directions on the displayed pages.

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.

For plotting Kepler light curves, y-axis scaling is slightly different. Plots scale simply from the minimum to the maximum flux. It is also recommended that only Kepler light curves from the same target be co-plotted due to the differences in flux values.

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 Angstroms) and minimum and maximum fluxes (in erg /cm2/sec/A) to select the spectral region of interest and to exclude noisy data. Note Kepler light curves are in units of time and uncalibrated fluxes.

Plot dimensions
Adjust the X size and Y size in pixels to create the size of plot desired. The maximum dimensions are 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

EPIC
K2 Ecliptic Plane Input Catalog (EPIC) Identifier
201000001 to 248368655

RA
Right Ascension JD2000 (Deg)
7.3394 to 360.0000

Dec
Declination JD2000 (Deg)
-34 to 30.5873

Data Availability
Data availability flag. 0 = target has not been observed by K2, 1 = target has been observed by K2 and the data has been archived. If not specified, both observed and not observed targets are returned in the search.
0, 1

KepMag
Kepler Magnitude (mag)
0.7820 to 33.2520

HIP
Hipparcos Identifier
2356 to 118312

TYC
Tycho2 Identifier
sample values: 5513-1474-1, 5512-309-1

UCAC
UCAC4 Identifier
sample values: 398-052475, 398-052085

2MASS
2MASS Identifier
sample values: 11370387-1048329, 11372639-1048232

SDSS
SDSS DR9 Identifier
sample values: 5976-301-1-0128-0212, 5973-301-2-0016-0310

Object type
Object Type, basically "star" or "extended"
star, extended

Kepflag
Describes how Kepler Magnitude is defined. See document KSCI-19082.
gri,BV,JHK, or J

stpropflag
Stellar Properties Flag
null, plxJ, plxV, pmJ, or pmV

pmra
Proper motion in RA (mas/yr)
-3842 to 2482

e_pmra
Uncertainty in Proper motion in RA (mas/yr)
0 to 998

pmdec
Proper motion in DEC (mas/yr)
-2725 to 2318

e_pmdec
Uncertainty in Proper motion in DEC (mas/yr)
0 to 999.1000

plx
Hipparcos parallax (mas)
-99.1600 to 336.7200

e_plx
Uncertainty in parallax (mas)
0.1600 to 71.8600

Bmag
Johnson B Magnitude (mag)
0.8770 to 18.9990

e_Bmag
Uncertainty in Johnson B Magnitude (mag)
0.0100 to 1.9290

Vmag
Johnson V Magnitude (mag)
1.0310 to 18.9930

e_Vmag
Uncertainty in Johnson V Magnitude (mag)
0.0090 to 1.1890

umag
Sloan u Magnitude (mag)
11.6740 to 32.9840

e_umag
Uncertainty in Sloan u Magnitude (mag)
0.0010 to 9.9990

gmag
Sloan g Magnitude (mag)
7.9860 to 33.3640

e_gmag
Uncertainty in Sloan g Magnitude (mag)
0.0010 to 0.9000

rmag
Sloan r Magnitude (mag)
6.9960 to 19.9990

e_rmag
Uncertainty in Sloan r Magnitude (mag)
0.0010 to 0.9000

imag
Sloan i Magnitude (mag)
5.7690 to 35.1240

e_imag
Uncertainty in Sloan i Magnitude (mag)
0.0010 to 0.9000

zmag
Sloan z Magnitude (mag)
10.4900 to 36.6230

e_zmag
Uncertainty in Sloan z Magnitude (mag)
0.0010 to 9.9990

Jmag
2MASS J Magnitude (mag)
3.5950 to 17.5220

e_Jmag
Uncertainty in 2MASS J Magnitude (mag)
0.0160 to 0.2180

Hmag
2MASS H Magnitude (mag)
2.4410 to 16.6730

e_Hmag
Uncertainty in 2MASS H Magnitude (mag)
0.0140 to 0.2180

Kmag
2MASS K Magnitude (mag)
1.9410 to 16.0890

e_Kmag
Uncertainty in 2MASS K Magnitude (mag)
0.0130 to 0.2180

w1mag
WISE W1 Magnitude (mag)
currently all null

e_w1mag
Uncertainty in WISE W1 Magnitude (mag)
currently all null

w2mag
WISE W2 Magnitude (mag)
currently all null

e_w2mag
Uncertainty in WISE W2 Magnitude (mag)
currently all null

w3mag
WISE W3 Magnitude (mag)
currently all null

e_w3mag
Uncertainty in WISE W3 Magnitude (mag)
currently all null

w4mag
WISE W4 Magnitude (mag)
currently all null

e_w4mag
Uncertainty in WISE W4 Magnitude (mag)
currently all null

Teff
Effective Temperature (K)
1708 to 16022

ep_teff
Upper Uncertainty in Effective Temperature (cgs)
20 to 5234

em_teff
Lower Uncertainty in Effective Temperature (cgs)
17 to 7040

logg
log Surface Gravity (K)
-0.8400 to 5.3950

ep_logg
Upper Uncertainty in log Surface Gravity (cgs)
0.0200 to 4.8000

em_logg
Lower Uncertainty in log Surface Gravity (cgs)
0.0200 to 5.2850

[Fe/H]
Metallicity (dex)
-3.4740 to 0.9320

ep_[Fe/H]
Upper Uncertainty in Metallicity (dex)
0.0500 to 2.8400

em_[Fe/H]
Lower Uncertainty in Metallicity (dex)
0.0500 to 2.7600

Radius
Stellar Radius (solar units)
0.0880 to 531.3760

ep_rad
Upper Uncertainty in Stellar Radius (solar units)
0.0020 to 299.0780

em_rad
Lower Uncertainty in Stellar Radius (solar units)
0.0020 to 299.0780

mass
Stellar Mass (solar units)
0.0710 to 6.0620

ep_mass
Upper Uncertainty in Stellar Mass (solar units)
0.0010 to 2.1890

em_mass
Lower Uncertainty in Stellar Mass (solar units)
0.0010 to 1.9220

rho
Stellar Density (solar units)
0.0000 to 102.5000

ep_rho
Upper Uncertainty in Stellar Density (solar units)
0.0000 to 72.5100

em_rho
Lower Uncertainty in Stellar Density (solar units)
0.0000 to 113.5000

lum
Stellar Luminosity (solar units)
currently all null

ep_lum
Upper Uncertainty in Stellar Luminosity (solar units)
currently all null

em_lum
Lower Uncertainty in Stellar Luminosity (solar units)
currently all null

Distance
Distance (pc)
2.9700 to 102700

ep_d
Upper Uncertainty in Distance (solar units)
0.0891 to 482600

em_d
Lower Uncertainty in Distance (solar units)
0.0891 to 482600

E(B-V)
Extinction (mag)
0 to 12.7144

ep_E(B-V)
Upper Extinction uncertainty (mag)
0 to 3.6176

em_E(B-V)
Lower Extinction uncertainty (mag)
0 to 4.3608

2MASS Flag
string containing 2MASS flags (e.g., Qflg-Rflg-Bflg-Cflg-Xflg-Aflg)
sample values: AAA-222-111-000-0-0, CCC-222-111-ccc-0-0, BUU-200-100-c00-0-0

Nearest Neighbor
Distance to nearest 2MASS neighbor (arcsec)
0.1000 to 257.6000

Nomad ID
string containing NOMAD-1 identifiers (for sources with supplemented NOMAD1 proper motions)
sample values: 0585-0412453, 0585-0412453, 0585-0413000