This document defines the catalog entries describing
the KEPLER Data Archive.
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.
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.
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.
Non-unique Kepler ID identifying corresponding entry in the Kepler Input Catalog. Note multiple observations can be made with the same Kepler ID. Also used in naming data files. range: 757,076 to < 13 million and
100 million to 100,004,144
Investigation ID assigned by the Kepler project describing a particular GO or project observing program. EX, STKS, GO1000, etc. (Note wild cards are added automatically before and after the user-entered ID(s).)
Right Ascension in decimal degrees as extracted from the ingested FITS file headers (i.e., these are not extracted from KIC.) range: 279.63 to 301.82, although values are stored in decimal degrees, valid formats for queries include: "19 28 29.65", "19h28m29s", 292.12354
Declination in decimal degrees (from the FITS file headers of ingested files (i.e., they are not extracted from KIC) range: 36.56 to 52.47, stored in decimal degrees but can be queried using values such as: "+37 14 04.5", "37.23458"
archive class in science table used to distinguish long and short cadence light curves and target pixel files CLC, CSC, TPL or TPS. Note if both a light curve and a target pixel file exist, or just a light curve file exists, the archive class will refer to the light curve.
Date on which data becomes public. As of November, 2012, most Kepler data is now public. example: 2009-10-14 12:00:00 Note, as with all MAST datetime fields, the following examples are valid date formats when submitting queries: "< Jan 10 2008", "Jul 1 2009 .. Aug 1 2009", "1/1/2008", "2009 Jul 15 14:30:20"
A magnitude computed according to a hierarchical scheme and depends on what pre-existing catalog source is available, SCP, Tycho 2, or photographic photometry, in order of preferred selection. For SCP stars the magnitude is synthesized from the Sloan-like g and r magnitudes according to the following prescription: if one defines 'color' as g - r, then for color less than or equal to 0.8 kepmag = 0.8r + 0.2g, while for color greater than 0.8 kepmag = 0.9r + 0.1g. Empirical measurements for presumed constant stars suggest that the r.m.s. for this quantity is slightly larger 0.02 mags. except for very faint and bright stars. range: 5. to 20.7
2MASS catalog ID, a sexagesimal, equatorial position-based source name in the form: hhmmssss+ddmmsss[ABC...] (Note this entry was added by MAST, and was not included in the KIC). example: 19245798+3644595
A unique identification number which was defined during final processing to identify a 2Mass catalog entry. The unique identification number is referred to as pts_key/cntr. See the User's Guide to the 2Mass All Sky Data Release, at http://www.ipac.caltech.edu/2mass/releases/allsky/doc/explsup.html for information on the pts_key/cntr field. range: 79221108 to 1305757552
Describes the difference (if any) between 2MASS values derived by MAST staff and the original KIC 2MASS entries. (See the KIC table to find the original uncorrected values.) Conditions currently flagged include: null - KIC contained a null entry and MAST could not find a match, 0 - KIC entry agreed with MAST found entry, 1 - a new 2MASS entry replaced a null KIC entry, 2 - a null value replaced a KIC non-null entry, 3 - a new non-null entry replaced a non-null KIC entry. See the 2mass notes for more information.
Source catalog that was used for deriving stellar parameters. current range is from 1 to 14:
0 - null, 1 - Hipparcos catalog ID, 2 - Tycho2 ID, 3 - UCAC2 ID, 4 - General Catalog of Var. Stars ID, 5 - Lepine proper motion catalog star. altid>0 is 2MASS ID, altid< 0 is a pseudo-id generated by SCP processing, 6 - altid contains 2MASS ID coming from Astroseiseismology catalog, 11 - NED ID, 12 - Extended 2MASS ID, 13 - FIRST ID, 14 - NVSS catalog ID, 15 - VLBA catalog ID, 16 - CHANDRA catalog ID
Star/galaxy indicator based on the USNO-B star/galaxy estimator. 1 = USNO-B values 0 to 5, 0 = values 6 to 11. The values 0 - 11 were a measure of the similarity between a given image to a stellar point spread function. 0 is quite dissimilar, 11 means quite similar. 0 = star, 1 = galaxy.
Source of Kepler-band magnitude SCP, 2MASS, UNCAL, PHOTO, and TYBV. SCP - SCP values for sdssg and sdssr were used to compute KEPMAG using equation below . The error for KEPMAG is roughly 0.03 mag., NOCAL - No calibration to optical mag. possible, used for entries from non-optical catalogs. KEPMAG field is null. , 2MASS - Objects found only in 2MASS Catalog with no optical counterpart, KEPMAG is null, UNCAL - KEPMAG copied from a single color of the parent catalog, uncertainty could be 1.0 mag or higher, PHOTO - parent catalog contained a red and blue mag. obtained from Photographic photometry. Values used to compute KEPMAG on the basis of: sdssg=blue sdssr=red color=sdssg-sdssr if (color<=0.8) kepmag = 0.8*sdssr + 0.2*sdssg else kepmag = 0.9*sdssr+0.1*sdssg, internal photographic errors have errors of 0.2 mag suggest KEPMAG errors of 0.03 mag, TYBV - parent catalog is Tycho-2 and this gives B and V magnitudes. KEPMAG value computed from sdssg=0.54*b+0.46*v-0.07 sdssr=-0.44*b+1.44*v+0.12 using same transformation as above to calc. KEPMAG. Errors same as for TYCHO-2 catalog.
Photometry quality indicator. Placeholder for SCP values not yet determined. range: 0 to 8 which is the count of non-null entries in USNO-B1.0 (O,E,J,F,N), UCAC-2 (R), TYcho-2 (B,V). In general the more colors the more likely the star is real. For NOCAL and 2MASS entries, this value = 0.
The fraction of target flux obtained in the optimal aperture averaged for the specified data. The flux fraction in any given cadence will differ from this mean value. This value is not to be confused with the Flux Fraction value given on the Target Search page which gives a predictive values. range: 0.19 to 1