On the evolution of angular momentum

Selecting the best quality data, I find that nearly all 0.5 to 1.2M_{sun} main sequence stars converge to a single rotational mass dependent sequence after 750Myr; when the mass is larger than 0.8M{sun}, most of them converge in ~120Myr. If stars rotate as rigid bodies, the angular momentum of the vast majority is within clearly outlined bounds. The lower boundary defines a terminal main sequence rotational isochrone, the upper one coincides with slow rotators from the Pleiades and stars from Praesepe delineate a third one. Mass dependent exponential relationships between angular momentum and age are determined from these isochrones. Age estimates based on the angular momentum, are acceptable in middle aged stars older than 750Myr and more massive than 0.6-0.7M{sun}. The evolution of the Rossby number indicates that the Parker dynamo may cease early on in stars where M/M{sun}_>=1.1. An empirical formula for the torque, an idealized model for it and a relation between rotational period and magnetic field, lead to a formula for the evolution of the mass loss rate, predicting that the present solar rate is close to a minimum and that it was around five times more vigorous when life on Earth started.

Cone search capability for table J/other/RMxAA/56.139/m48d (Magnitude and period of M 48 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m48p (Physical parameters of M 48 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m67d (Magnitude and period of M 67 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m67p (Physical parameters of M 67 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc752d (Magnitude and period of NGC 752 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc752p (Physical parameters of NGC 752 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc2301d (Magnitude and period of NGC 2301 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc2301p (Physical parameters of NGC 2301 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/hyadesp (Physical parameters of Hyades cluster stars)

Cone search capability for table J/other/RMxAA/56.139/corotd (Magnitude and period of Corot field stars)

Cone search capability for table J/other/RMxAA/56.139/corotp (Physical parameters of Corot field stars)

Cone search capability for table J/other/RMxAA/56.139/hatnetd (Magnitude and period of Hatnet field stars)

Cone search capability for table J/other/RMxAA/56.139/hatnetp (Physical parameters of Hatnet field stars)

Cone search capability for table J/other/RMxAA/56.139/keplerd (Magnitude and period of Kepler field stars)

Cone search capability for table J/other/RMxAA/56.139/keplerp (Physical parameters of Kepler field stars)

Cone search capability for table J/other/RMxAA/56.139/blanco1d (Magnitude and period of Blanco 1 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/blanco1p (Physical parameters of Blanco 1 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/comaberd (Magnitude and period of Coma Ber cluster stars)

Cone search capability for table J/other/RMxAA/56.139/comaberp (Physical parameters of Coma Ber cluster stars)

Cone search capability for table J/other/RMxAA/56.139/hperd (Magnitude and period of h Persei cluster stars)

Cone search capability for table J/other/RMxAA/56.139/hperp (Physical parameters of h Persei cluster stars)

Cone search capability for table J/other/RMxAA/56.139/hyadesd (Magnitude and period of Hyades cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ic4665d (Magnitude and period of IC 4665 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ic4665p (Physical parameters of IC 4665 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m34d (Magnitude and period of M 34 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m34p (Physical parameters of M 34 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m35d (Magnitude and period of M 35 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m35p (Physical parameters of M 35 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m37d (Magnitude and period of M 37 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/m37p (Physical parameters of M 37 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc2547d (Magnitude and period of NGC 2547 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc2547p (Physical parameters of NGC 2547 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc6811d (Magnitude and period of NGC 6811 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc6811p (Physical parameters of NGC6811 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc6819d (Magnitude and period of NC 6819 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/ngc6819p (Physical parameters of NC 6819 cluster stars)

Cone search capability for table J/other/RMxAA/56.139/pleiaded (Magnitude and period of Pleiades cluster star)

Cone search capability for table J/other/RMxAA/56.139/pleiadep (Physical parameters of Pleiades cluster stars)

Cone search capability for table J/other/RMxAA/56.139/praesepd (Magnitude and period of Praesepe cluster stars)

Cone search capability for table J/other/RMxAA/56.139/praesepp (Physical parameters of Praesepe cluster stars)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/other/RMxAA/56.139
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RMxAA/56.139
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RMxAA/56.139
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/other/RMxAA/56.139
Provenance
Creator Bohigas J.
Publisher CDS
Publication Year 2020
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysical Processes; Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy