The present work reports on the discovery of three stars that we have
identified to be rotating Sun-like stars, based on rotational modulation
signatures inferred from light curves from the CoRoT mission's Public
Archives. In our analysis, we performed an initial selection based on
the rotation period and position in the period-T-eff diagram. This
revealed that the stars CoRoT IDs 100746852, 102709980, and 105693572
provide potentially good matches to the Sun with a similar rotation
period. To refine our analysis, we applied a novel procedure, taking
into account the fluctuations of the features associated with
photometric modulation at different time intervals and the fractality
traces that are present in the light curves of the Sun and of these
``New Sun'' candidates alike. In this sense, we computed the so-called
Hurst exponent for the referred stars, for a sample of 14 CoRoT stars
with sub-and super-solar rotational periods, and for the Sun itself in
its active and quiet phases. We found that the Hurst exponent can
provide a strong discriminant of Sun-like behavior, going beyond what
can be achieved with solely the rotation period itself. In particular,
we find that CoRoT ID 105693572 is the star that most closely matches
the solar rotation properties as far as the latter's imprints on light
curve behavior are concerned. The stars CoRoT IDs 100746852 and
102709980 have significant smaller Hurst exponents than the Sun,
notwithstanding their similarity in rotation periods.
%0 Journal Article
%1 WOS:000322899600001
%A de Freitas, D B
%A Leao, I C
%A Lopes, C E Ferreira
%A Paz-Chinchon, F
%A Martins, B L Canto
%A Alves, S
%A Medeiros, J R De
%A Catelan, M
%C TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
%D 2013
%I IOP PUBLISHING LTD
%J ASTROPHYSICAL JOURNAL LETTERS
%K Sun: analysis; data general; rotation; rotation} solar-type; stars: variables: {methods:
%N 2
%R 10.1088/2041-8205/773/2/L18
%T NEW SUNS IN THE COSMOS?
%V 773
%X The present work reports on the discovery of three stars that we have
identified to be rotating Sun-like stars, based on rotational modulation
signatures inferred from light curves from the CoRoT mission's Public
Archives. In our analysis, we performed an initial selection based on
the rotation period and position in the period-T-eff diagram. This
revealed that the stars CoRoT IDs 100746852, 102709980, and 105693572
provide potentially good matches to the Sun with a similar rotation
period. To refine our analysis, we applied a novel procedure, taking
into account the fluctuations of the features associated with
photometric modulation at different time intervals and the fractality
traces that are present in the light curves of the Sun and of these
``New Sun'' candidates alike. In this sense, we computed the so-called
Hurst exponent for the referred stars, for a sample of 14 CoRoT stars
with sub-and super-solar rotational periods, and for the Sun itself in
its active and quiet phases. We found that the Hurst exponent can
provide a strong discriminant of Sun-like behavior, going beyond what
can be achieved with solely the rotation period itself. In particular,
we find that CoRoT ID 105693572 is the star that most closely matches
the solar rotation properties as far as the latter's imprints on light
curve behavior are concerned. The stars CoRoT IDs 100746852 and
102709980 have significant smaller Hurst exponents than the Sun,
notwithstanding their similarity in rotation periods.
@article{WOS:000322899600001,
abstract = {The present work reports on the discovery of three stars that we have
identified to be rotating Sun-like stars, based on rotational modulation
signatures inferred from light curves from the CoRoT mission's Public
Archives. In our analysis, we performed an initial selection based on
the rotation period and position in the period-T-eff diagram. This
revealed that the stars CoRoT IDs 100746852, 102709980, and 105693572
provide potentially good matches to the Sun with a similar rotation
period. To refine our analysis, we applied a novel procedure, taking
into account the fluctuations of the features associated with
photometric modulation at different time intervals and the fractality
traces that are present in the light curves of the Sun and of these
``New Sun'' candidates alike. In this sense, we computed the so-called
Hurst exponent for the referred stars, for a sample of 14 CoRoT stars
with sub-and super-solar rotational periods, and for the Sun itself in
its active and quiet phases. We found that the Hurst exponent can
provide a strong discriminant of Sun-like behavior, going beyond what
can be achieved with solely the rotation period itself. In particular,
we find that CoRoT ID 105693572 is the star that most closely matches
the solar rotation properties as far as the latter's imprints on light
curve behavior are concerned. The stars CoRoT IDs 100746852 and
102709980 have significant smaller Hurst exponents than the Sun,
notwithstanding their similarity in rotation periods.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND},
author = {de Freitas, D B and Leao, I C and Lopes, C E Ferreira and Paz-Chinchon, F and Martins, B L Canto and Alves, S and Medeiros, J R De and Catelan, M},
biburl = {https://www.bibsonomy.org/bibtex/2fccc5acf43d1585e63fd5fbcb496a9ff/ppgfis_ufc_br},
doi = {10.1088/2041-8205/773/2/L18},
interhash = {fd0424b522e8bb9e57b6e48b1277ea53},
intrahash = {fccc5acf43d1585e63fd5fbcb496a9ff},
issn = {2041-8205},
journal = {ASTROPHYSICAL JOURNAL LETTERS},
keywords = {Sun: analysis; data general; rotation; rotation} solar-type; stars: variables: {methods:},
number = 2,
publisher = {IOP PUBLISHING LTD},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {NEW SUNS IN THE COSMOS?},
tppubtype = {article},
volume = 773,
year = 2013
}