J/PAZh/35/348 Photoelectric observation of Cepheids (Berdnikov+, 2009)
Photometric observation of Cepheids from the ASAS-3 Catalog:
Photoelectric BVIc observations of 46 low-Amplitude Cepheids.
Berdnikov L.N., Kniazev A.Yu., Kravtsov V.V., Pastukhova E.N., Turner D.G.
<Pis'ma Astron. Zh. 35, 348 (2009)>
=2009PAZh...35..348B 2009PAZh...35..348B
=2009AstL..35...311B 2009AstL..35...311B
ADC_Keywords: Stars, variable; Photometry
Abstract:
From December 2006 to January 2008, we performed 1699 BVIc
observations for 46 low-amplitude Cepheids discovered in the course of
the ASAS project using the 76-cm telescope of the South-African
Astronomical Observatory (SAAO). We provide the tables of observations
and V light and B-V and V-Ic color curves. These new observations,
along with data from the ASAS-3 catalog, have been used to improve the
elements of the light variations. Our data allow the number of known
Galactic low-amplitude Cepheids to be almost doubled. This makes it
possible to increase the number of distance indicators suitable for
studying the structure of the inner Galactic arms by almost 15%.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 1699 Photoelectric observations of Cepheids from
the ASAS-3 catalog
table2.dat 54 46 New elements of the light variations for
low-Amplitude Cepheids from ASAS-3 catalog
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See also:
II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ASAS Name of Cepheid (HHMMSS+DDMM.m),
ASAS JHHMMSS+DDMM.m in Simbad
16- 27 F12.4 d HJD [2454076/2454477] Heliocentric Julian date
30- 35 F6.3 mag Vmag ? Johnson V magnitude
38- 42 F5.3 mag B-V ? Johnson B-V color index
45- 49 F5.3 mag V-Ic ? Johnson-Cousins V-Ic color index
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ASAS Name of Cepheid (HHMMSS+DDMM.m),
ASAS JHHMMSS+DDMM.m in Simbad
16- 26 F11.3 d HJD Initial epoch, HJD
29- 33 F5.3 d e_HJD Error on HJD
36- 44 F9.6 d Per Period
47- 54 F8.6 d e_Per rms uncertainty on Per
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(End) Veta Avedisova (INASAN) 14-Dec-2009