%0 Journal Article %1 WOS:000363538500085 %A Leao, I C %A Pasquini, L %A Lopes, C E Ferreira %A Neves, V %A Valcarce, A A R %A de Oliveira, L L A %A da Silva, D Freire %A de Freitas, D B %A Martins, B L Canto %A Janot-Pacheco, E %A Baglin, A %A Medeiros, J R De %C 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE %D 2015 %I EDP SCIENCES S A %J ASTRONOMY & ASTROPHYSICS %K Sun: evolution; rotation; rotation} solar-type; stars: {stars: %R 10.1051/0004-6361/201526085 %T Rotation period distribution of CoRoT* and Kepler Sun-like stars %V 582 %X Aims. We study the distribution of the photometric rotation period (P-rot), which is a direct measurement of the surface rotation at active latitudes, for three subsamples of Sun-like stars: one from CoRoT data and two from Kepler data. For this purpose, we identify the main populations of these samples and interpret their main biases specifically for a comparison with the solar P-rot. Methods. P-rot and variability amplitude (A) measurements were obtained from public CoRoT and Kepler catalogs, which were combined with public data of physical parameters. Because these samples are subject to selection effects, we computed synthetic samples with simulated biases to compare with observations, particularly around the location of the Sun in the Hertzsprung-Russel (HR) diagram. Publicly available theoretical grids and empirical relations were used to combine physical parameters with P-rot and A. Biases were simulated by performing cutoffs on the physical and rotational parameters in the same way as in each observed sample. A crucial cutoff is related with the detectability of the rotational modulation, which strongly depends on A. Results. The synthetic samples explain the observed P-rot distributions of Sun-like stars as having two main populations: one of young objects (group I, with ages younger than similar to 1 Gyr) and another of main-sequence and evolved stars (group II, with ages older than similar to 1 Gyr). The proportions of groups I and II in relation to the total number of stars range within 64-84% and 16-36%, respectively. Hence, young objects abound in the distributions, producing the effect of observing a high number of short periods around the location of the Sun in the HR diagram. Differences in the P-rot distributions between the CoRoT and Kepler Sun-like samples may be associated with different Galactic populations. Overall, the synthetic distribution around the solar period agrees with observations, which suggests that the solar rotation is normal with respect to Sun-like stars within the accuracy of current data.

@article{WOS:000363538500085, abstract = {Aims. We study the distribution of the photometric rotation period (P-rot), which is a direct measurement of the surface rotation at active latitudes, for three subsamples of Sun-like stars: one from CoRoT data and two from Kepler data. For this purpose, we identify the main populations of these samples and interpret their main biases specifically for a comparison with the solar P-rot. Methods. P-rot and variability amplitude (A) measurements were obtained from public CoRoT and Kepler catalogs, which were combined with public data of physical parameters. Because these samples are subject to selection effects, we computed synthetic samples with simulated biases to compare with observations, particularly around the location of the Sun in the Hertzsprung-Russel (HR) diagram. Publicly available theoretical grids and empirical relations were used to combine physical parameters with P-rot and A. Biases were simulated by performing cutoffs on the physical and rotational parameters in the same way as in each observed sample. A crucial cutoff is related with the detectability of the rotational modulation, which strongly depends on A. Results. The synthetic samples explain the observed P-rot distributions of Sun-like stars as having two main populations: one of young objects (group I, with ages younger than similar to 1 Gyr) and another of main-sequence and evolved stars (group II, with ages older than similar to 1 Gyr). The proportions of groups I and II in relation to the total number of stars range within 64-84% and 16-36%, respectively. Hence, young objects abound in the distributions, producing the effect of observing a high number of short periods around the location of the Sun in the HR diagram. Differences in the P-rot distributions between the CoRoT and Kepler Sun-like samples may be associated with different Galactic populations. Overall, the synthetic distribution around the solar period agrees with observations, which suggests that the solar rotation is normal with respect to Sun-like stars within the accuracy of current data.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE}, author = {Leao, I C and Pasquini, L and Lopes, C E Ferreira and Neves, V and Valcarce, A A R and de Oliveira, L L A and da Silva, D Freire and de Freitas, D B and Martins, B L Canto and Janot-Pacheco, E and Baglin, A and Medeiros, J R De}, biburl = {https://www.bibsonomy.org/bibtex/2180887b45073fc6c4ac1f5564b348693/ppgfis_ufc_br}, doi = {10.1051/0004-6361/201526085}, interhash = {0bdde00eda9af9691d7375f73b5f1f47}, intrahash = {180887b45073fc6c4ac1f5564b348693}, issn = {1432-0746}, journal = {ASTRONOMY & ASTROPHYSICS}, keywords = {Sun: evolution; rotation; rotation} solar-type; stars: {stars:}, publisher = {EDP SCIENCES S A}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Rotation period distribution of CoRoT* and Kepler Sun-like stars}, tppubtype = {article}, volume = 582, year = 2015 }