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J/A+A/385/793       Cepheids in Magellanic Clouds. II.       (Antonello+, 2002)

Search for second overtone mode Cepheids in Magellanic Clouds. II. Characteristics of second overtone mode pulsations. Antonello E., Fugazza D., Mantegazza L. <Astron. Astrophys. 385, 793 (2002)> =2002A&A...385..793A
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Photometry, CCD Keywords: stars: oscillations - stars: variables: Cepheids - galaxies: Magellanic Cloud Abstract: The analysis of CCD observations of ten new suspected second overtone mode Cepheids in the SMC does not confirm the nature of such stars; most of them appear to be first overtone mode Cepheids. A careful analysis of the OGLE best second overtone mode candidates and of the second overtone component of double mode Cepheids in SMC and LMC has been performed in order to clarify the possible effects of a resonance between pulsation modes. There are some indications that such a resonance is indeed operating in these pulsators. A brief discussion of the effects of blending on the light curve shape is also reported, and the usefulness of the Fourier parameters as mode discriminators is discussed. The observations were performed with the direct CCD camera at the Dutch 0.91m telescope of La Silla (ESO) during three runs in November 1997 (6 nights), July 1998 (12 nights) and October 1998 (15 nights). The CCD detector was the ESO chip No. 33, which is a TEK CCD with 512x512 pixels, pixel size of 27µm and spatial resolution of 0.44", providing a small field of view of 3.77'x3.77'. 8 fields were selected in order to observe the ten second overtone candidates. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 79 59 F, 1O, and DM Cepheids table4.dat 79 10 Cepheids (continued) table5.dat 79 10 EROS 2O mode candidates
See also: J/A+A/303/137 : EROS Variables: Cepheids in the LMC bar (Beaulieu+ 1995) J/A+A/333/L35 : MC Cepheids Fourier decomposition (Antonello 1998) J/ApJS/117/135 : Photometry of Cepheids in MC (Moffett+ 1998) J/PASP/111/812 : V(RI)C Phot of Cepheids in MC (Barnes+ 1999) J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999) J/AcA/49/437 : BVI photometry of OGLE SMC Cepheids (Udalski+, 1999) J/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999) Byte-by-byte Description of file: table3.dat table4.dat table5.dat
Bytes Format Units Label Explanations
1- 8 A8 --- [AFM2002] Name (FFa-NNNN) 10 I1 h RAh Right ascension (J2000) 12- 13 I2 min RAm Right ascension (J2000) 15- 19 F5.2 s RAs Right ascension (J2000) 21 A1 --- DE- Declination sign (J2000) 22- 23 I2 deg DEd Declination (J2000) 25- 26 I2 arcmin DEm Declination (J2000) 28- 31 F4.1 arcsec DEs Declination (J2000) 33- 37 F5.2 mag Vmag V magnitude 38 A1 --- u_Vmag [?] Uncertainty flag on Vmag 40- 44 F5.2 mag Imag ? I magnitude 46- 51 F6.3 d Per Period 53- 60 A8 --- Mode Pulsation mode (1) 62- 69 A8 --- EROS EROS designation 71- 79 A9 --- OGLE OGLE designation
Note (1): Pulsation mode: DMC: double-mode Cepheids 2O: second overtone mode Cepheid 1O: first overtone mode Cepheid F: fundamental mode Cepheid
History: From electronic version of the journal References: Mantegazza & Antonello, Paper I 1998A&AS..132...39M
(End) James Marcout, Patricia Bauer [CDS] 13-May-2002
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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