J/AJ/164/251 ZTF measured rotational period of 40553 M- or G-dwarfs (Lu+, 2022)
Bridging the Gap-The Disappearance of the Intermediate Period Gap for Fully
Convective Stars, Uncovered by New ZTF Rotation Periods.
Lu Y.,Curtis J.L.,Angus R.,David T.J.,Hattori S.
<Astron. J., 164, 251 (2022)>
=2022AJ....164..251L 2022AJ....164..251L
ADC_Keywords: Stars, G-type; Stars, M-type; Optical; Parallaxes, trigonometric
Keywords: Stellar rotation ; Lomb-Scargle periodogram ; Period search ;
Catalogs
Abstract:
The intermediate period gap, discovered by Kepler, is an observed
dearth of stellar rotation periods in the temperature-period diagram
at ∼20days for G-dwarfs and up to ∼30days for early-M-dwarfs. However,
because Kepler mainly targeted solar-like stars, there is a lack of
measured periods for M-dwarfs, especially those at the fully
convective limit. Therefore it is unclear if the intermediate period
gap exists for mid- to late-M-dwarfs. Here, we present a period
catalog containing 40553 rotation periods (9535 periods >10days),
measured using the Zwicky Transient Facility (ZTF). To measure these
periods, we developed a simple pipeline that improves directly on the
ZTF archival light curves and reduces the photometric scatter by 26%,
on average. This new catalog spans a range of stellar temperatures
that connect samples from Kepler with MEarth, a ground-based
time-domain survey of bright M dwarfs, and reveals that the
intermediate period gap closes at the theoretically predicted location
of the fully convective boundary (GBP-GRP∼2.45mag). This result
supports the hypothesis that the gap is caused by core-envelope
interactions. Using gyro-kinematic ages, we also find a potential
rapid spin-down of stars across this period gap.
Description:
We measured rotation periods from the Zwicky Transient Facility (ZTF)
archival light curves by first cross-matching the stars in ZTF with
our Gaia target list (see section 2.1 in the article), using an
angular separation of 1.2". We only select stars with period
measurements >1.1days.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 134 40553 40553 vetted ZTF periods
--------------------------------------------------------------------------------
See also:
B/simbad : Simbad objects catalogue (M.Wenger 2000)
J/A+A/327/1039 : Structure and evolution of low-mass stars (Chabrier+ 1997)
J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)
J/ApJ/733/115 : Rotation periods and membership in M34 (Meibom+, 2011)
J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)
J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)
J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)
J/ApJ/821/93 : Rotation & Galactic kinematics of mid M dwarfs (Newton+, 2016)
J/AJ/152/113 : Pleiades members with K2 light curves. I. Per (Rebull+, 2016)
J/ApJ/862/33 : Improved & expanded membership cat for NGC752 (Agueros+, 2018)
J/A+A/616/A10 : 46 open clusters GaiaDR2 HR diagram (Gaia Collaboration, 2018)
J/ApJ/879/49 : Rotation periods 171 Gaia members of NGC 6811 (Curtis+, 2019)
J/ApJ/879/100 : K2 rotation periods Hyades & Praesepe members (Douglas+, 2019)
J/A+A/621/A21 : Activity of Kepler stars (Reinhold+, 2019)
J/ApJS/244/21 : Surface rotation & activity of Kepler stars I. (Santos+, 2019)
J/AJ/160/90 : Stellar parameters for 13196 Kepler dwarfs (Angus+, 2020)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/ApJ/904/140 : Ruprecht 147 members & rot. for 5 other cl. (Curtis+, 2020)
J/other/NatAs/5.707 : Dwarf stars asteroseismic rotation rates (Hall+, 2021)
J/AJ/161/189 : Gyro-kinematic ages for ∼30000 Kepler stars (Lu+, 2021)
J/ApJ/916/77 : K2 rotation periods SDSS & Gaia M dwarfs (Popinchalk+, 2021)
J/ApJS/255/17 : Surface rotation & activity Kepler stars. II. (Santos+, 2021)
J/MNRAS/513/420 : NGTS Variability Study (Briegal+, 2022)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- Gaia Gaia EDR3 identifier
21- 40 F20.16 d Prot [1.1/200] Measured rotational period (1)
42- 50 F9.7 mag BPRP [1./4.5] Gaia EDR3 GBP-GRP color
52- 70 F19.16 mag GMAG [7/14.1] Gaia EDR3 absolute G-band magnitude
72- 82 F11.7 deg RAdeg [0/360] Gaia EDR3 Right Ascension
(ICRS) at Epoch=2016.0
84- 93 F10.7 deg DEdeg [0/89] Gaia eDR3 Declination (ICRS) at Epoch=2016.0
95-114 F20.16 --- Pmax [0.55/706]? Normalized maximum Lomb-Scargle power
(1)
116-134 F19.16 mas plx [0.73/69.9] Parallax from Gaia EDR3
--------------------------------------------------------------------------------
Note (1): For sources with Prot=200.0 and Pmax set to null, the sources
potentially have Prot values >200.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 01-Feb-2023