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J/MNRAS/421/181     EC 01541-1409 pulsations frequencies     (Reed+, 2012)

Multiyear and multisite photometric campaigns on the bright high-amplitude pulsating subdwarf B star EC 01541-1409. Reed M.D., Kilkenny D., O'Toole S., Ostensen R.H., Honer C., Gilker J.T., Quint A.C., Doennig A.M., Hicks L.H., Thompson M.A., McCart II P.A., Zietsman E., Chen W.-P., Chen C.-W., Lin C.-C., Beck P., Degroote P., Barlow B.N., Reichart D.E., Nysewander M.C., Lacluyze A.P., Ivarsen K.M., Haislip J.B., Baran A., Winiarski M., Drozdz M. <Mon. Not. R. Astron. Soc., 421, 181-189 (2012)> =2012MNRAS.421..181R
ADC_Keywords: Stars, variable ; Stars, subdwarf; Stars, B-type Keywords: stars: individual: EC 01541-1409 - stars: oscillations - subdwarfs - stars: variables: general Abstract: We present follow-up observations of the pulsating subdwarf B (sdB) star EC 01541-1409 as part of our efforts to resolve pulsation spectra for use in asteroseismological analyses. This paper reports on data obtained from a single-site campaign, during 2008, and a multisite campaign, during 2009. From limited 2008 data, we were able to clearly resolve and pre-whiten 24 periods. A subsequent multisite campaign spanning nearly 2 months found over 30 individual periodicities most of which were unstable in amplitude and/or phase. Pulsation amplitudes were found to the detection limit, meaning that further observations would likely reveal more periodicities. Description: Data were obtained from six different observatories, each with a somewhat different CCD setup. South African Astronomical Observatory's (SAAO's) 1.0-m telescope observed during both 2008 and 2009. Objects: ----------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------- 01 56 31.90 -13 54 26.4 EC 01541-1409 = GD 1053 ----------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 96 45 Frequencies and amplitudes for EC 01541 from the 2008 single-site and 2009 multisite campaigns
See also: J/A+A/393/965 : Slowly pulsating B stars intrinsic frequencies (de Cat+, 2002) J/A+A/506/143 : Pulsations of HD 181231 (Neiner+, 2009) J/A+A/513/A6 : NOT survey of subdwarf B stars (Ostensen+, 2010) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 A3 --- ID Frequency name ('s' are 'suggested' frequencies) 4 A1 --- n_ID [bc] Possible overtone (1) 6- 13 F8.2 uHz F08 ?=- Frequency for 2008 campaign (Oct 25-27; resolution limit: 5uHz) 15- 17 F3.2 uHz e_F08 ? rms uncertainty on F08 19- 27 F9.3 uHz F09 ?=- Frequency for entire 2009 campaign (Oct 21/Nov 26; resolution limit 0.32uHz) 29- 32 F4.3 uHz e_F09 ? rms uncertainty on F09 34- 41 F8.2 uHz F09.1 ?=- Frequency for part 1 2009 campaign (Oct 21/Nov 8; resolution limit 0.67uHz) 43- 45 F3.2 uHz e_F09.1 ? rms uncertainty on F09.1 47- 54 F8.2 uHz F09.2 ?=- Frequency for part 2 2009 campaign (Nov 18/Nov 26; resolution limit 1.44uHz) 56- 58 F3.2 uHz e_F09.2 ? rms uncertainty on F09.2 60- 64 F5.2 mmag Amp08 ?=- Amplitude for 2008 campaign (Oct 25-27; detection limit 0.37mmag) 66- 68 F3.2 mmag e_Amp08 ? rms uncertainty on Amp08 70- 73 F4.2 mmag Amp09 ?=- Amplitude for entire 2009 campaign (Oct 21/Nov 26; detection limit 0.33mmag) 75- 77 F3.2 mmag e_Amp09 ? rms uncertainty on Amp09 79- 82 F4.2 mmag Amp09.1 ?=- Amplitude for part 1 2009 campaign (Oct 21/Nov 8; detection limit 0.48mmag) 83 A1 --- n_Amp09.1 [a] Note on Amp09.1 (1) 85- 87 F3.2 mmag e_Amp09.1 ? rms uncertainty on Amp09.1 89- 92 F4.2 mmag Amp09.2 ?=- Amplitude for part 1 2009 campaign (Nov 18/Nov 26; detection limit 0.32mmag) 94- 96 F3.2 mmag e_Amp09.2 ? rms uncertainty on Amp09.2
Note (1): Notes as follows: a = This amplitude is below the formal 4σ detection limit b = is 2f2, though they are not likely overtones, based on amplitudes c = is 2f3, though they are not likely overtones, based on amplitudes
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Oct-2012
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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