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J/A+A/604/A29   MC Type II and anomalous Cepheids PL and PR (Groenewegen+, 2017)

The period-luminosity and period-radius relations of Type II and anomalous Cepheids in the Large and Small Magellanic Clouds. Groenewegen M.A.T., Jurkovic M. <Astron. Astrophys. 604, A29 (2017)> =2017A&A...604A..29G (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, variable Keywords: stars: variables: Cepheids - stars: fundamental parameters - Magellanic Clouds Abstract: Type II Cepheids (T2Cs) and anomalous Cepheids (ACs) are pulsating stars that follow separate period-luminosity relations. We study the period-luminosity (PL) and period-radius (PR) relations for T2Cs and ACs in the Magellanic Clouds. In an accompanying paper we determined luminosity and effective temperature for the 335 T2Cs and ACs in the LMC and SMC discovered in the OGLE-III survey, by constructing the spectral energy distribution (SED) and fitting this with model atmospheres and a dust radiative transfer model (in the case of dust excess). Building on these results we study the PL- and PR relations. Using existing pulsation models for RR Lyrae and classical Cepheids we derive the period-luminosity-mass-temperature-metallicity relations, and then estimate the pulsation mass. Description: The luminosities and effective temperatures derived in GJ17 for 335 T2Cs and ACs in the SMC and LMC were used to study the period-Wesenheit, and for the first time to our knowledge in the 21st Century, the period-bolometric luminosity and PR relations for these classes of stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 75 333 Basic parameters and stellar masses
See also: J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008) J/ApJ/679/71 : Mid-IR period-luminosity relations (Freedman+, 2008) J/MNRAS/397/933 : LMC type II Cepheids JHKs magnitudes (Matsunaga+, 2009) J/AcA/60/91 : VI light curves of SMC type II Cepheids (Soszynski+, 2010) J/MNRAS/437/2307 : LMC anomalous Cepheid Ks light curves (Ripepi+, 2014) J/AcA/65/233 : OGLE Magellanic Clouds anomalous Cepheids (Soszynski+, 2015) J/MNRAS/446/3034 : LMC Type II Cepheids J and Ks light curves (Ripepi+, 2015) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 18 A18 --- Name OGLE-III Identifier (1) 20- 24 A5 --- Sub-type Sub-type of variability (2) 27- 31 F5.2 d Per Pulsation period 33- 37 F5.2 Rsun R Radius 39- 43 F5.2 Rsun e_R Error in the radius 45- 49 F5.3 Msun MCep Pulsation mass based on the Cepheid pulsation models 51- 55 F5.3 Msun e_MCep Error in the pulsation mass 57- 61 F5.3 Msun MRRL Pulsation mass based on the RR Lyrae pulsation models 63- 67 F5.3 Msun e_MRRL Error in the pulsation mass 69 I1 --- Dusty [0/1] Has the star an infrared excess; yes (1), or no (0) 71 I1 --- Binary [0/1] Has the star been classified as a binary; yes (1), or no (0) 74- 75 A2 --- Agree [OK ok] Do the Cepheid and RR Lyrae pulsation masses agree? (3)
Note (1): OGLE-SMC-ANCEP-NN refers to OGLE III. OGLE SMC-ANCEP-01 = OGLE SMC-ACEP-32 (OGLE IV) OGLE SMC-ANCEP-02 = OGLE SMC-ACEP-41 (OGLE IV) OGLE SMC-ANCEP-03 = OGLE SMC-ACEP-57 (OGLE IV) OGLE SMC-ANCEP-04 = OGLE SMC-ACEP-62 (OGLE IV) OGLE SMC-ANCEP-05 = OGLE SMC-ACEP-68 (OGLE IV) OGLE SMC-ANCEP-06 = OGLE SMC-ACEP-81 (OGLE IV) All other names are the same in OGLE III and OGLE IV. Note (2): F or 1O for ANCEP; RVTau, BLHer, WVir, pWVir for T2CEP. Note (3): Agree flag as follows: OK = yes, within the respective errors bars ok = yes, within 15%
Acknowledgements: Martin Groenewegen, martin.groenewegen(at)
(End) Patricia Vannier [CDS] 15-May-2017
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