B/corot CoRoT observation log (N2-4.4) (CoRoT 2016)
Archive of the CoRoT Data Center, Release N2-4.4 (2016-03-23)
CoRoT team
<CoRoT Data Center (2014)>
=2014yCat....102028C 2014yCat....102028C
ADC_Keywords: Observatory log ; Stars, variable
Mission_Name: CoRoT
Description:
CoRoT, a space astronomy mission, has measured photometric micro-variability
of stars from minutes to months (up to 150 days) with a high duty cycle (more
than 90%).
The mission was led by CNES in association with four French laboratories and
7 participating countries and agencies (Austria, Belgium, Brazil, Germany,
Spain, and the ESA Science Programme).
The satellite was composed of a PROTEUS platform (the 3rd in the series) and
a unique instrument: a stellar rapid photometer. It was launched on December
27th 2006 by a Soyuz Rocket, from Baikonour.
The mission has lasted almost 6 years (the nominal 3-year duration and a
3-year extension) and has observed more than 160 000 stars.
It stopped sending data on November 2nd 2012.
Two regions of the sky were accessible for long period of time: circles of
10 degrees centered on the equator around alpha=06:50 and alpha=18:50. They
were called the CoRoT eyes: the "anticenter" and the "center eye" (as they
are approximately in these directions). Each pointing covers 1.4x2.8 square
degrees within one of those CoRoT eyes.
The original scientific objectives were focussed on the study of stellar
pulsations (asteroseismology) to probe the internal structure of stars, and
the detection of small exoplanets through their "transit" in front of their
host star, and the measurement of their size.
This lead to introduce two modes of observations, working simultaneously:
- The "bright star" mode dedicated to very precise seismology of a small
sample of bright and closeby stars
- The "faint star" mode, observing a very large number of stars at the
same time, to detect transits, which are rare events, as they imply
the alignment of the star, the planet and the observer. The large
amount of data gathered in this mode turned out to be extremely
fruitful for many topics of stellar physics.
Beyond these two initial objectives, CoRoT data revealed stellar variability
associated with various other phenomena: granulation, rotational modulation
by spots associated with magnetic activity, oblateness induced by a nearby
companion star, ...
The data of this CoRoT CDS archive correspond to the legacy release V4.4 of
CoRoT N2 data. A complete description can be found in the
"CoRoTN2versions_30sept2014.pdf" document available on the vizier ftp as well
as on project websites listed in the "See also" field below.
Other archives provide an access to the CoRoT data at different levels, or to
complementary catalogues
- the CoRoT IAS archive at idoc-corot.ias.u-psud.fr/ and mirrors of this
archive at
exoplanetarchive.ipac.caltech.edu/applications/ETSS/CoRoTexoindex.html
and at
exoplanetarchive.ipac.caltech.edu/applications/ETSS/CoRoTasteroindex.html
- archive at https://sipad-corot.cnes.fr/ or at the CoRoT IAS archive,
but they require a deep understanding of the instrument and the
observation conditions to be scientifically helpful.
- Raw data N0 are available upon request at the CoRoT CNES archive.
- Complementary data on the CoRoT targets, obtained through ground
based complementary observations, can be found in :
* EXODAT for the faint star fields at
http://cesam.oamp.fr/exodat/quick-access/retrieve-corot-star
* GAUDI for the bright star fields at
http://sdc.cab.inta-csic.es/gaudi/
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
Bright_star.dat 321 171 Stars observed in the bright star mode
Faint_star.dat 614 177382 Stars observed in the faint star mode with E(B-V)
files/* . 15 All FITS files (directory tree with 355280 files)
COROT-N2DATApublication_web.pdf 512 2499 Doc
--------------------------------------------------------------------------------
See also:
https://sipad-corot.cnes.fr : CNES N0-N1 archive
http://idoc-corot.ias.u-psud.fr/ : the CoRoT IAS Data Center Archive
http://smsc.cnes.fr/COROT/GP_mission.htm : the CoRoT observation strategy
http://idoc-corotn2-public.ias.u-psud.fr/jsp/CorotHelp.jsp : More doc
Doc:
http://cdsarc.u-strasbg.fr/ftp/B/corot/COROT-N2_DATA_publication_web.pdf
III/282 : CoRoT Bright Stars Catalogue with variability classes (Baglin+, 2015)
Byte-by-byte Description of file: Bright_star.dat
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Bytes Format Units Label Explanations
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1- 19 A19 "datime" FileDate (crea_dat) File generation date
21-120 A100 --- FileName (filename) Name of file with time series
122-129 A8 --- PV (pipe_ver) Pipeline process version
131-133 A3 --- N2V (n2_ver) Version of N2 data
135-153 A19 "datime" date1 (startdat) UT date of first measurement
155-173 A19 "datime" date2 (end_date) UT date of last measurment
178-186 I9 --- CoRoT [1/21960] (corotid) ID of the CoRoT target
188-192 A5 --- Run [SLIRca0-9] (run_code) (G1)
194-196 A3 --- CCD ? (hlfccdid) reference of the half CCD from
which the product originates e.g.
'E1R' for Right CCD#1 of Exoplanet channel
198-203 F6.3 mag Vmag ? (magnit_v) Visual magnitude of the target
205-210 F6.3 mag (B-V) ? (mag_diff) Color index (B-V)
212-220 F9.5 deg RAdeg (alpha) Right ascension of star, J2000
222-230 F9.5 deg DEdeg (delta) Declination, J2000 (degrees)
232-239 I8 byte size ? (filesize) [17280,32921280] bytes in file
241-255 A15 --- Star Name of the star observed
257-262 F6.2 mag VMAG ? (absm_v) Star absolute magnitude in V
264-268 I5 K Teff ? (teff) Star effective temperature
270-274 F5.2 [cm/s2] logg ? (gravity) Star gravity (log scale)
276-280 F5.2 [Sun] [Fe/H] ? (metal) Star metallicity (log scale)
282-293 E12.6 ct/s LCmean ? (lc_mean) light curve mean intensity
295-306 E12.6 ct/s LCrms ? (lc_rms) light curve rms
308-309 I2 pix Nh [-1] (nbhotpix) Number of hot pixels
311-321 A11 --- SpT ? (spectral_type) Spectral type, from EXODAT
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Byte-by-byte Description of file: Faint_star.dat
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Bytes Format Units Label Explanations
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1- 19 A19 "datime" FileDate (crea_dat) File generation date
21-120 A100 --- FileName (filename) Name of file with time series
122-129 A8 --- PV (pipe_ver) Pipeline process version
131-133 A3 --- N2V (n2_ver) Version of N2 data
135 A1 --- col [01] 0 = monochrome results, 1 = 3-channels
137-144 I8 byte size ? Size of file (bytes)
146-168 A23 "datime" date1 (startdat) UT date of first measurement
170-192 A23 "datime" date2 (end_date) UT date of last measurement
194-202 I9 --- CoRoT [100396342/739016552] (corotid) ID of the
CoRoT target
204-208 A5 --- Run [SLIRca0-9] (run_code) (G1)
210-212 A3 --- CCD (hlfccdid) reference of the half CCD from
which the product originates e.g.
E1R for Right CCD#1 of Exoplanet channel
215-218 I4 --- wId ? (win_id) Window identification
220-225 F6.3 mag mag ?=0 (magnitud) Magnitude of the target
227-232 F6.3 mag (B-V) ? (colbv) Color index (B-V)
234-242 F9.5 deg RAdeg (alpha) Right ascension of star, J2000
244-252 F9.5 deg DEdeg (delta) Declination, J2000 (degrees)
254-261 F8.6 --- contf [0,1]? (contfact) contamination factor
263-265 I3 s Exp [-1,512]? (exptime) Exposure time
267-269 F3.1 --- cd [0]? (chrdeg) chromacity degree
271-273 F3.1 --- act [0]? (actilev) Level of stellar activity
275-279 A5 --- V1 ? (varclas1) star variability (1)
281-285 A5 --- V2 ? (varclas2) star variability (1)
287-291 A5 --- V3 ? (varclas3) star variability (1)
293-297 F5.3 --- pv1 [0,1]? (prbclas1) probability associated
to varclass V1
299-303 F5.3 --- pv2 [0,1]? (prbclas2) probability associated
to varclass V2
305-309 F5.3 --- pv3 [0,1]? (prbclas3) probability associated
to varclass V3
311-316 F6.3 mag Bmag ? (magnit_b) Star magnitude B
318-323 F6.3 mag Vmag ? (magnit_v) Star magnitude V
325-330 F6.3 mag Rmag ? (magnit_r) Star magnitude R
332-337 F6.3 mag Imag ? (magnit_i) Star magnitude I
339-348 A10 --- Star Star name (always blank)
350-355 F6.2 mag VMAG ? (absm_v) Star absolute magnitude in V
358-362 I5 K Tcol [-1,41510]? (coltemp) Color temperature
364-368 I5 K Teff ?=0 (teff) Effective temperature
370-374 F5.2 [cm/s2] logg ? (gravity) Star gravity (log scale)
376-380 F5.2 [Sun] [Fe/H] ? (metal) Star metallicity (log scale)
382-393 E12.6 ct/s LCmean ? (lc_mean) light curve mean
395-406 E12.6 ct/s LCrms ? (lc_rms) light curve rms
409-410 I2 pix Nh (nbhotpix) Number of hot pixels
412-423 E12.6 ct/s Bmean ? (lcrmsb) light curve mean B
425-436 E12.6 ct/s Gmean ? (lcrmsg) light curve mean G
438-449 E12.6 ct/s Rmean ? (lcrmsr) light curve mean R
451-462 E12.6 ct/s Wmean ? (lcrmsr) light curve mean white light
464-475 E12.6 ct/s Brms ? (lcrmsb) light curve rms B
477-488 E12.6 ct/s Grms ? (lcrmsg) light curve rms G
490-501 E12.6 ct/s Rrms ? (lcrmsr) light curve rms R
503-514 E12.6 ct/s Wrms ? (lcrmsr) light curve rms white light
516-525 A10 --- SpT ? (spectral_type) Spectral type, from EXODAT
527-530 F4.2 mag E(B-V) ?=- (E(B-V)) E(B-V) colour excess, from EXODAT
532-614 A83 --- W.file Name of associated WINDESCRIPTOR file
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Note (1): the variability classification results from an automatic
treatment of the light curve, and is quite uncertain. The classes
are defined in Debosscher et al. 2009A&A...506..519D 2009A&A...506..519D, as follows:
ACT = presence of Activity
BCEP = β-Cephei stars
BE = Variable Be-stars
CLCEP = Classical Cepheids (δ-Cep)
CP = Chemically peculiar stars
DMCEP = Double-mode Cepheids
DSCUT = δ-Scuti stars
E1L = (?undefined?)
E1R = (?undefined?)
E2L = (?undefined?)
E2R = (?undefined?)
ECL = Eclipsing binaries (all types)
ELL = Ellipsoidal variables
FUORI = FU-Ori stars
GDOR = γ-Doradus stars
HAEBE = Herbig Ae/Be stars
LAPV = Low-amplitude periodic variables
LBOO = λ-Bootis variables
LBV = Luminous Blue variables
MIRA = Mira variables
MISC = Miscellanous variable (undecided)
PTCEP = Population II Cepheids
PVSG = Periodically variable supergiants
ROT = Rotational modulation
RRAB = RR-Lyrae stars, subtype ab
RRC = RR-Lyrae stars, subtype c
RRD = Double-mode RR-Lyrae stars
RVTAU = RV-Tauri stars
SDBV = Pulsating subdwarf B-stars
SPB = Slowly pulsating B-stars
SPDS = Short-period δ-Scuti variables
SR = Semi-regular variables
SXPHE = SX-Phe stars
TTAU = T-Tauri stars
WR = Wolf-Rayet stars
XB = X-ray binaries
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Global Notes:
Note (G1): the run is coded "tRann", where
t = 'L' (long), 'S' (short), or 'I' (initial)
a = 'c' (center) or 'a' (anticenter), and
nn = the run number.
Examples: LRa01, SRc01, etc.
History:
* 06-Feb-2009: Version 2
* 20-Aug-2009: Version 3.2
* 04-Dec-2009: Release 4 astero=50, exo=47811
5 runs: IRa01 + LRa01 + LRc01 + SRa01 + SRa02
(addition of variable types and probabilities)
* 30-Mar-2010: Release 5 astero=60, exo=59219
6 runs: IRa01 + LRa01 + LRc01 + SRa01 + SRc01 + SRa02
* 10-Jul-2010: Release 6 astero=70, exo=69487
7 runs: IRa01 + LRa01 + LRc01 + SRa01 + SRc01 + SRa02 + LRc02
* 28-Oct-2010: Release 7 astero=80, exo=92385
9 runs: IRa01 + LRa01-02 + LRc01-03 + SRa01-02 + SRc01
* 11-Nov-2011: New (simplified) formats; astero=110, exo=108718
13 runs: IRa01 + LRa01-03 + LRc01-04 + SRa01-03 + SRc01-02
* 06-Mar-2012: astero=120, exo=114397
14 runs: IRa01 + LRa01-03 + LRc01-05 + SRa01-03 + SRc01-02
* 19-Apr-2012: astero=125, exo=120120
16 runs: IRa01 + LRa01-04 + LRc01-06 + SRa01-03 + SRc01-02
The width of the column "Star" in table "Bright_star.dat" was enlarged
from 10 to 15 bytes.
* 31-Jul-2012: astero=125 (no change), exo=124376
16 runs: IRa01 + LRa01-04 + LRc01-06 + SRa01-03 + SRc01-02
* 15-Jan-2013: astero=135, exo=129018
17 runs: IRa01 + LRa01-05 + LRc01-06 + SRa01-03 + SRc01-02
* 30-Apr-2013: astero=135, exo=138985
21 runs: IRa01 + LRa01-05 + LRc01-08 + SRa01-03 + SRa05 + SRc01-03
* 20-Jul-2013: astero=150, exo=150258
22 runs: IRa01 + LRa01-05 + LRc01-08 + SRa01-05 + SRc01-03
* 12-Jan-2014: astero=155, exo=156584
23 runs: IRa01 + LRa01-06 + LRc01-08 + SRa01-05 + SRc01-03
* 23-Mar-2016: astero=171, exo=177382, version N2-4.4
* 22-Sep-2016: E(B-V) added in Faint_star
(End) Francois Ochsenbein [CDS], Sylviane Chaintreuil [LESIA] 23-Mar-2016