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J/other/JAVSO/37.169     Red variable stars in NSVS           (Nicholson, 2009)

Identifying previously uncatalogued red variable stars in the Northern Sky Variability Survey. Nicholson M. <J. Am. Assoc. Variable star obs., 37, 169 (2009)> =2009JAVSO..37..169N
ADC_Keywords: Stars, variable ; Stars, giant ; Photometry, infrared Keywords: catalogs - stars: AGB and post-AGB - stars: variables: other Abstract: Candidate variable stars in the publicly available data of the Northern Sky Variability Survey (NSVS) were identified by data mining the 2MASS survey for entries that matched the following criteria: DE>20.000,(J-K)>1.2, and Jmag<7.000. A total of 1233 such stars were identified: 1 type M, 64 type M:, 26 type SR:, and 1142 type L:, with amplitudes between 0.3 magnitude and 3.4 magnitudes. Only stars not listed in the International Variable Star Index (VSX) at the time of submission or not identified as variable in Simbad have been included. Description: Astrometric and photometric data are presented for 1233 previously unreported variable stars extracted from the Northern Sky Variability Survey. Cross referenced identifiers to Two Micron All Sky Survey (2MASS), Guide Star Catalog (GSC) and Tycho numbers are also included. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file nsvs.dat 239 1233 New NSVS variable stars
See also: I/255 : The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99) I/259 : The Tycho-2 Catalogue (Hog+ 2000) I/297 : NOMAD Catalog (Zacharias+ 2005) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) B/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2009) : NSVS Home Page Byte-by-byte Description of file: nsvs.dat
Bytes Format Units Label Explanations
1- 4 I4 --- MPN Running number in the catalogue 6- 7 I2 h RAh Right ascension (J2000) 9- 10 I2 min RAm Right ascension (J2000) 12- 16 F5.2 s RAs Right ascension (J2000) 18 A1 --- DE- Declination sign (J2000) 19- 20 I2 deg DEd Declination (J2000) 22- 23 I2 arcmin DEm Declination (J2000) 25- 28 F4.1 arcsec DEs Declination (J2000) 30- 31 I2 h RA2h 2MASS right ascension (J2000) (Cat. II/246) 33- 34 I2 min RA2m 2MASS right ascension (J2000) (Cat. II/246) 36- 40 F5.2 s RA2s 2MASS right ascension (J2000) (Cat. II/246) 42 A1 --- DE2- 2MASS declination sign (J2000) (Cat. II/246) 43- 44 I2 deg DE2d 2MASS declination (J2000) (Cat. II/246) 46- 47 I2 arcmin DE2m 2MASS declination (J2000) (Cat. II/246) 49- 52 F4.1 arcsec DE2s 2MASS declination (J2000) (Cat. II/246) 54- 69 A16 --- 2MASS 2MASS identifier (HHMMSSss+DDMMSSs, Cat. II/246) 71- 81 A11 --- GSC GSC identifier (HHMMm+DDMMm) (Cat. I/255) 83- 94 A12 --- TYC Tycho-2 identifier (NNNN-NNNNN-N) (Cat. I/259) 96-101 F6.3 mag Bmag ? NOMAD B magnitude (Cat. I/297) 103-108 F6.3 mag Vmag ? NOMAD V magnitude (Cat. I/297) 110-114 F5.2 mag Rmag ? NOMAD R magnitude (Cat. I/297) 116-120 F5.3 mag Jmag ? 2MASS J magnitude (Cat. II/246) 122-127 F6.3 mag Hmag ? 2MASS H magnitude (Cat. II/246) 129-133 F5.3 mag Kmag ? 2MASS K magnitude (Cat. II/246) 135-139 F5.3 mag J-K ? 2MASS (J-K) colour index (Cat. II/246) 141-148 A8 --- SpT MK spectral type (Cat. B/mk) 150-168 A19 --- NSVS1 Link to NSVS data 1 (6) 170-188 A19 --- NSVS2 Link to NSVS data 2 (6) 190-207 A18 --- NSVS3 Link to NSVS data 3 (6) 209-211 A3 --- Type Provisional variability type 213-217 F5.1 d Per ? Period of variable star (days) 219-227 F9.1 d Epoch ? Epoch (Julian Days) 229-233 F5.2 mag mag1 Magnitude at maximum brightness 235-239 F5.2 mag mag0 Magnitude at minimum brightness
Note (6): See
Acknowledgements: Martin Nicholson, newbinaries(at)
(End) Patricia Vannier [CDS] 23-Nov-2009
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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