J/AJ/141/81 NGC 2419 variable star population (Di Criscienzo+, 2011)
A new census of the variable star population in the globular cluster NGC 2419.
Di Criscienzo M., Greco C., Ripepi V., Clementini G., Dall'Ora M.,
Marconi M., Musella I., Federici L., Di Fabrizio L.
<Astron. J., 141, 81 (2011)>
=2011AJ....141...81D 2011AJ....141...81D
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry, UBVRI
Keywords: Galaxy: halo - globular clusters: general -
globular clusters: individual (NGC 2419) - stars: horizontal-branch -
stars: variables: general - techniques: photometric
Abstract:
We present B, V, and I CCD light curves for 101 variable stars
belonging to the globular cluster NGC 2419, 60 of which are new
discoveries, based on data sets obtained at the Telescopio Nazionale
Galileo, the Subaru telescope, and the Hubble Space Telescope. The
sample includes 75 RR Lyrae stars (38 RRab, 36 RRc, and one RRd), one
Population II Cepheid, 12 SX Phoenicis variables, two delta Scuti
stars, three binary systems, five long-period variables, and three
variables of uncertain classification.
Description:
Time-series B, V photometric observations of NGC 2419 (RA=07:38:24.0,
DE=38:52:54.9, J2000) were obtained between 2003 September and 2004
February with DOLORES at the 3.5m Telescopio Nazionale Galileo
(TNG). Observations were performed in service mode under the
requirement of seeing better than 1.5-arcsec. The TNG data were
complemented by F555W and F814W Wide Field Planetary Camera 2 (WFPC2)
(on board the HST7) archival observations of the cluster spanning six
years from 1994 May to 2000 March (Program IDs 5481, 7628, 7630,
8095), and by V, I photometry obtained with the Suprime-Cam of the
Subaru 8.2m telescope over four nights in 2002 December.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 119 101 Identification and properties of NGC 2419
variable stars
notes.dat 80 89 Individual notes
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See also:
J/PASP/117/37 : BVRI photometry in NGC 2419, Pal 4, and Pal 14 (Saha+, 2005)
J/ApJ/681/311 : Blue stragglers in NGC 2419 (Dalessandro+, 2008)
J/AJ/136/2259 : HST photometry of stars in NGC 2419 (Sandquist+, 2008)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Variable name <Cl* NGC 2419 SAW VNNN> in Simbad
6- 12 I7 --- ID Identification number
14 I1 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 24 F6.3 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 37 F5.2 arcsec DEs Declination (J2000)
39- 49 A11 --- Type Variable type
50- 60 F11.7 d Per Period
62- 72 F11.5 d T0 Time of maximum light
74- 79 F6.3 mag <Vmag> Average V magnitude
81- 82 A2 --- l_Vamp [=> ] Limit flag on Vamp
83- 87 F5.3 mag Vamp Amplitude of variation in V band
89- 94 F6.3 mag <Bmag> ?=- Average B magnitude
96- 97 A2 --- l_Bamp [=> ] Limit flag on Bamp
98-102 F5.3 mag Bamp ?=- Amplitude of variation in B band
104-109 F6.3 mag <Imag> ?=- Average I magnitude
111-112 A2 --- l_Iamp [=> ] Limit flag on Iamp
113-117 F5.3 mag Iamp ?=- Amplitude of variation in I band
119 A1 --- n_Name [*] * indicates a note in notes.dat file
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Variable name
6- 80 A75 --- Note Text of the note
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Jul-2012