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J/ApJ/696/870     Catalina Real-time Transient Survey (CRTS)      (Drake+, 2009)

First results from the Catalina Real-time Transient Survey. Drake A.J., Djorgovski S.G., Mahabal A., Beshore E., Larson S., Graham M.J., Williams R., Christensen E., Catelan M., Boattini A., Gibbs A., Hill R., Kowalski R. <Astrophys. J., 696, 870-884 (2009)> =2009ApJ...696..870D
ADC_Keywords: Supernovae ; Surveys ; Stars, variable Keywords: BL Lacertae objects: general - galaxies: general - novae, cataclysmic variables - stars: flare - supernovae: general Abstract: We report on the results from the first six months of the Catalina Real-Time Transient Survey (CRTS). In order to search for optical transients (OTs) with timescales of minutes to years, the CRTS analyses data from the Catalina Sky Survey which repeatedly covers 26000 of square degrees on the sky. The CRTS provides a public stream of transients that are bright enough to be followed up using small telescopes. Since the beginning of the survey, all CRTS transients have been made available to astronomers around the world in real time using HTML tables, RSS feeds, and VOEvents. As part of our public outreach program, the detections are now also available in Keyhole Markup Language through Google Sky. The initial discoveries include over 350 unique OTs rising more than 2mag from past measurements. Sixty two of these are classified as supernovae (SNe), based on light curves, prior deep imaging and spectroscopic data. Seventy seven are due to cataclysmic variables (CVs; only 13 previously known), while an additional 100 transients were too infrequently sampled to distinguish between faint CVs and SNe. The remaining OTs include active galactic nucleus, blazars, high-proper-motions stars, highly variable stars (such as UV Ceti stars), and transients of an unknown nature. Description: Two experiments have been searching tens of thousands of square degrees of the sky for transients; the Palomar-Quest (PQ) digital synoptic sky survey (Djorgovski et al. 2008AN....329..263D), and the Catalina Real-Time Transient Survey (CRTS). The PQ survey started analyzing drift scan data for optical transients (OTs) in real time in August 2006, while the CRTS began in 2007 November. The transients discovered in PQ data will be presented in A. Mahabal et al. (2009AAS...21440709M). The Catalina Sky Survey (CSS; Larson et al. 2003DPS....35.3604L), used by CRTS, uses the 0.7m f/1.9 Catalina Schmidt Telescope north of Tucson, Arizona to discover near-Earth objects (NEOs) and potentially hazardous asteroids (PHAs). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 97 61 Confirmed and candidate supernovae table2.dat 97 75 Cataclysmic variable candidates table3.dat 94 5 Blazar candidates
See also: B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-) V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006) II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009) : Catalina Sky Survey (CSS) home page : Catalina Real-time Transient Survey (CRTS) data online : CRTS Optical Transients (CSS data) Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 24 A24 --- [DDM2009] SN identification (CSSYYMMDD JHHMMSS+DDMMSS) 26- 27 I2 h RAh Hour of right ascension (J2000) 29- 30 I2 min RAm Minute of right ascension (J2000) 32- 36 F5.2 s RAs Second of right ascension (J2000) 38 A1 --- DE- Declination sign (J2000) 39- 40 I2 deg DEd Degree of declination (J2000) 42- 43 I2 arcmin DEm Arcminute of declination (J2000) 45- 48 F4.1 arcsec DEs Arcsecond of declination (J2000) 50- 60 F11.5 d MJD Modified Julian Date of detection 62- 65 F4.1 mag mag Catalina detection magnitude 67 A1 --- l_rmag Limit flag on rmag 68- 71 F4.1 mag rmag Approximate source galaxy Gunn r magnitude for table 1; approximate Gunn r-band quiescent magnitude for table 2 72 A1 --- f_rmag [*c] Flag on rmag (1) 74- 79 A6 --- SN SN IAU designation (YYYYaa) (only for table 1) 81- 84 A4 --- Type SN type (only for table 1) 86 A1 --- r_Type [ab] Origin of Type (only for table 1) (2) 88- 91 F4.1 mag FUV ? GALEX FUV-band magnitude (only for table 2) 93- 96 F4.1 mag NUV ? GALEX NUV-band magnitude (only for table 2) 97 A1 --- n_[DDM2009] [b-r] Individual notes (only for table 2) (3)
Note (1): Flag as follows: c = Estimated r-band magnitude. * = Not explained in the paper. Note (2): Flag as follows: a = Sand et al. 2008, see However, first announced and spectroscopically confirmed by the Supernova Factory as SNF20080510-001. b = Found in archival data. Note (3): Flag as follows: b = Mahabal et al. (2008ATel.1520....1M). c = V844 Her. d = V544 Her. e = SDSS J153634+332851. f = VW CrB. g = OU Vir. h = SDSS QSO candidate J082654.69-000733.1 (Richards et al. 2004, Cat. J/ApJS/155/257). i = Cnc SDSS J080846+313106. j = Djorgovski et al. (2008ATel.1418....1D and 2008ATel.1411....1D). k = HV-Vir. l = Eclipsing system. m = Antipin V80. n = Hya SDSS J090628+052656. o = First appeared in CBAT Jan 20th. p = GY Cnc. q = EG Aqr. r = V1007 Her.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 24 A24 --- [DDM2009] SN identification (CSSYYMMDD JHHMMSS+DDMMSS) 26- 27 I2 h RAh Hour of right ascension (J2000) 29- 30 I2 min RAm Minute of right ascension (J2000) 32- 37 F6.3 s RAs Second of right ascension (J2000) 39 A1 --- DE- Declination sign (J2000) 40- 41 I2 deg DEd Degree of declination (J2000) 43- 44 I2 arcmin DEm Arcminute of declination (J2000) 46- 50 F5.2 arcsec DEs Arcsecond of declination (J2000) 52- 62 F11.5 d MJD Modified Julian Date of detection 64- 67 F4.1 mag umag ? SDSS-DR6 u-band magnitude 69- 72 F4.1 mag gmag ? SDSS-DR6 g-band magnitude 74- 77 F4.1 mag rmag ? SDSS-DR6 r-band magnitude 79- 82 F4.1 mag imag ? SDSS-DR6 i-band magnitude 84- 87 F4.1 mag zmag ? SDSS-DR6 z-band magnitude 89- 92 F4.1 mag CSS Catalina detection magnitude 94 A1 --- f_CSS [a] a: spectroscopic candidates (Mahabal et al. 2008ATel.1520....1M)
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 04-May-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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