J/AJ/140/319 BVR light curves of NGC 6026 and 6337 (Hillwig+, 2010)
Binary central stars of planetary nebulae discovered through photometric
variability. II. Modeling the central stars of NGC 6026 and NGC 6337.
Hillwig T.C., Bond H.E., Afsar M., De Marco O.
<Astron. J., 140, 319-327 (2010)>
=2010AJ....140..319H 2010AJ....140..319H
ADC_Keywords: Planetary nebulae ; Photometry, UBVRI
Keywords: binaries: close - planetary nebulae: individual (NGC 6026, NGC 6337)
Abstract:
Close-binary central stars of planetary nebulae (CSPNe) provide an
opportunity to explore the evolution of PNe, their shaping, and the
evolution of binary systems undergoing a common-envelope phase. Here,
we present the results of time-resolved photometry of the binary
central stars (CSs) of the PNe NGC 6026 and NGC 6337 as well as
time-resolved spectroscopy of the CS of NGC 6026. The results of a
period analysis give an orbital period of 0.528086(4) days for NGC
6026 and a photometric period of 0.1734742(5) days for NGC 6337.
Description:
The photometric data consist of V-band CCD photometry obtained at the
SMARTS 0.9m telescope7 located at Cerro Tololo Inter-American
Observatory (CTIO) with the T2K Imager and B-, V-, and R-band
photometry obtained at the CTIO 1.0m telescope with the SITe SI-502A
512x512 pixel CCD imager.
Spectroscopy of NGC 6026 was obtained at the SMARTS 1.5m telescope
located at CTIO using the 831-lines/mm grating in second order with a
range 4067-4749Å with a 3.6" slit.
Objects:
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RA (2000) DE Designation(s) (Period)
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16 01 21.13 -34 32 35.8 NGC 6026 = PN G341.6+13.7 (P=0.528086)
17 22 15.66 -38 29 03.5 NGC 6337 = PN G349.3-01.1 (P=0.1734742)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 257 Instrumental magnitudes of the central star
of NGC 6026
table2.dat 80 60 Instrumental magnitudes of the central star
of NGC 6337
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
Byte-by-byte Description of file: table?.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d B-HJD ? B band obs. Heliocentric Julian Date
15- 20 F6.3 mag Bmag ? B band instrumental magnitude
22- 26 F5.3 mag e_Bmag ? The 1σ error in Bmag
28- 40 F13.5 d V-HJD V band obs. Heliocentric Julian Date
42- 47 F6.3 mag Vmag V band instrumental magnitude
49- 53 F5.3 mag e_Vmag The 1σ error in Vmag
55- 67 F13.5 d R-HJD ? R band obs. Heliocentric Julian Date
69- 74 F6.3 mag Rmag ? R band instrumental magnitude
76- 80 F5.3 mag e_Rmag ? The 1σ error in Rmag
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History:
From electronic version of the journal
References:
De Marco et al., Paper I 2008AJ....136..323D 2008AJ....136..323D
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jun-2012