J/ApJ/898/76 Rot. velocities of APOGEE stars in Kepler field (Simonian+, 2020)
Rapid rotation of Kepler field dwarfs and subgiants: spectroscopic vsini from
APOGEE
Simonian G.V.A., Pinsonneault M.H., Terndrup D.M., van Saders J.L.
<Astrophys. J., 898, 76 (2020)>
=2020ApJ...898...76S 2020ApJ...898...76S
ADC_Keywords: Rotational velocities; Spectra, infrared
Keywords: Late-type stars ; Subgiant stars ; Stellar rotation ; Spectroscopy
Abstract:
We use 5337 spectroscopic vsini measurements of Kepler dwarfs and
subgiants from the APOGEE survey to study stellar rotation trends. We
find a detection threshold of 10km/s, which allows us to explore the
spindown of intermediate-mass stars leaving the main sequence, merger
products, young stars, and tidally synchronized binaries. We see a
clear distinction between blue stragglers and the field turnoff in
α-rich stars, with a sharp rapid rotation cutoff for blue
stragglers consistent with the Kraft break. We also find rapid
rotation and radial velocity variability in a sample of red straggler
stars, considerably cooler than the giant branch, lending credence to
the hypothesis that these are active, tidally synchronized binaries.
We see clear evidence for a transition between rapid and slow rotation
on the subgiant branch in the domain predicted by modern angular
momentum evolution models. We find substantial agreement between the
spectroscopic and photometric properties of KIC targets added by
Huber+ (2014, J/ApJS/211/2) based on Two Micron All Sky Survey
photometry. For the unevolved lower main sequence, we see the same
concentration toward rapid rotation in photometric binaries as that
observed in rotation period data, but at an enhanced rate. We
attribute this difference to unresolved near-equal-luminosity
spectroscopic binaries with velocity displacements on the order of the
APOGEE resolution. Among cool unevolved stars we find an excess rapid
rotator fraction of 4% caused by pipeline issues with photometric
binaries.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 72 144 Pleiades overlap sample
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)
J/A+A/335/183 : Pleiades low-mass stars rotational velocities (Queloz+ 1998)
J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)
J/A+A/497/497 : Physical param. from JHK flux (Gonzalez-Hernandez+, 2009)
J/MNRAS/402/1380 : Rot. velocities in Pleiades and αPer (Jackson+, 2010)
J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/AJ/141/83 : Kepler Mission. I. Eclipsing binaries in DR1 (Prsa+, 2011)
J/AJ/142/160 : Kepler Mission. II. EBs in DR2 (Slawson+, 2011)
J/ApJ/747/51 : Lagoon Nebula stars. I. Rotation periods (Henderson+, 2012)
J/ApJS/199/30 : Effective temperature scale for KIC (Pinsonneault+, 2012)
J/ApJ/776/67 : Rotational tracks (van Saders+, 2013)
J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)
J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)
J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)
J/ApJ/797/43 : Blue stragglers in ω Cen (Mucciarelli+, 2014)
J/ApJ/807/82 : Rotational velocities of APOKASC red giants (Tayar+, 2015)
J/AJ/151/144 : ASPCAP weights for APOGEE chemical elements (Garcia+, 2016)
J/A+A/585/A150 : On the metallicity of open clusters. III. (Netopil+, 2016)
J/AJ/152/113 : Pleiades members with K2 LCs. I. Periods (Rebull+, 2016)
J/AJ/152/115 : Pleiades members with K2 LCs. III. (Stauffer+, 2016)
J/ApJS/233/23 : APOKASC cat. of KIC dwarfs and subgiants (Serenelli+, 2017)
J/ApJ/855/115 : Lithium abundances of KOIs from CKS spectra (Berger+, 2018)
J/ApJ/866/99 : Radii of KIC stars & planets using Gaia DR2 (Berger+, 2018)
J/A+A/616/A24 : Rotation in RGBs from Kepler asteroseismology (Gehan+, 2018)
J/AJ/155/38 : The rotation of M dwarfs observed by APOGEE (Gilhool+, 2018)
J/ApJ/852/49 : Properties of metal-poor stars in APOGEE DR13 (Hayes+, 2018)
J/ApJ/871/174 : Kepler rapid rotators and Ks-band excesses (Simonian+, 2019)
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- APOGEE 2MASS ID for the target
20- 22 A3 --- --- [HII]
24- 27 I4 --- OID ? Additional ID to cross-reference with
original paper(s)
(<Cl* Melotte 22 HII NNNN> in Simbad)
29- 29 A1 --- l_vsiniSH87 Limit flag on vsini-SH87
31- 34 F4.1 km/s vsiniSH87 [10/75]? vsini as measured by
Stauffer & Hartmann (1987ApJ...318..337S 1987ApJ...318..337S)
36- 40 F5.2 km/s e_vsiniSH87 [0.38/10.5]? vsiniSH87 uncertainty (1)
42- 45 F4.1 km/s vsiniQ98E [1.8/42.0]? vsini as measured by
Queloz+ (1998, J/A+A/335/183) with ELODIE
47- 49 F3.1 km/s e_vsiniQ98E [0.8/2.2]? vsiniQ98E uncertainty
51- 51 A1 --- l_vsiniQ98C Limit flag on vsiniQ98C
53- 56 F4.1 km/s vsiniQ98C [2/44.2]? vsini as measured by
Queloz+ (1998, J/A+A/335/183) with CORAVEL
58- 60 F3.1 km/s e_vsiniQ98C [0.3/5]? vsiniQ98C uncertainty
62- 62 A1 --- l_vsiniJ18 Limit flag on vsiniJ18
64- 68 F5.1 km/s vsiniJ18 [8/127]? vsini as measured by
Jackson et al (2018MNRAS.476.3245J 2018MNRAS.476.3245J)
70- 72 F3.1 km/s e_vsiniJ18 [1/2.8]? vsiniJ18 uncertainty
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Note (1): v*sini uncertainty calculated from the R value reported by
Stauffer & Hartmann (1987ApJ...318..337S 1987ApJ...318..337S), Table 1.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Nov-2021