J/A+A/513/A6 NOT survey of subdwarf B stars (Ostensen+, 2010)
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope.
Ostensen R.H., Oreiro R., Solheim J.-E., Heber U., Silvotti R.,
Gonzales-Perez J.M., Ulla A., Perez Hernandez, F., Rodriguez-Lopez C.,
Telting J.H.
<Astron. Astrophys. 513, A6 (2010)>
=2010A&A...513A...6O 2010A&A...513A...6O
ADC_Keywords: Surveys ; Stars, subdwarf ; Stars, B-type
Keywords: subdwarfs - surveys - stars: oscillations -
Abstract:
A search programme for pulsating subdwarf B stars was conducted with
the Nordic Optical Telescope on La Palma over 59 nights between 1999
and 2009.
The purpose of the programme was to significantly extend the number of
rapidly pulsating sdB stars to better understand the properties of
this new group of variable compact stars.
Candidates were selected initially from the HS and HE surveys, but
were supplemented with additional objects from other surveys. Short
sequences of time-series photometry were made on the candidates to
determine the presence of rapid pulsations.
Description:
The table contains all the sdB stars observed during the NOT survey
that were not identified as pulsators. It provides coordinates,
details of the photometric sequences, and on the variability for each
object.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 91 285 Catalog of subdwarf B stars
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Target star name
18- 33 A16 --- AName Alternative name
35- 36 I2 h RAh Right ascension (J2000)
38- 39 I2 min RAm Right ascension (J2000)
41- 45 F5.2 s RAs Right ascension (J2000)
48 A1 --- DE- Declination sign
49- 50 I2 deg DEd Declination (J2000)
52- 53 I2 arcmin DEm Declination (J2000)
55- 59 F5.2 arcsec DEs Declination (J2000)
61- 64 F4.1 mag pgmag Photographic magnitude
66- 67 A2 --- Run Run identifier
69- 72 I4 --- Np Number of data points in light curve
74- 75 I2 s Dt Sampling interval
77- 81 F5.2 10-3 Sigma Mean noise level, in mma units (1)
83- 87 F5.2 10-3 Amax Amplitude of highest peak in Fourier spectrum,
in mma units (1)
89- 91 A3 --- Type [NOV. ] Non-variability flag (2)
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Note (1): The mma units are milli-modulation amplitudes, i.e. 1E-3 of the
Fourier amplitudes of a light-curve in normalised intensity units. One
mma translates to a peak-to-peak amplitude of two millimodulation
intensity (mmi) units in the light curve.
Note (2): Targets flagged as NOV (not observed to vary) have Amax<3.7xSigma.
The remaining targets are discussed individually in the paper.
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Acknowledgements:
Roy Ostensen, roy(at)ster.kuleuven.be
(End) Roy Ostensen [K.U. Leuven], Patricia Vannier [CDS] 21-Jan-2010