TOWARD PRECISE AGES FOR SINGLE STARS IN THE FIELD. GYROCHRONOLOGY CONSTRAINTS AT SEVERAL Gyr USING WIDE BINARIES. I. AGES FOR INITIAL SAMPLE

@article{Chaname2012TOWARDPA,
  title={TOWARD PRECISE AGES FOR SINGLE STARS IN THE FIELD. GYROCHRONOLOGY CONSTRAINTS AT SEVERAL Gyr USING WIDE BINARIES. I. AGES FOR INITIAL SAMPLE},
  author={Julio Chanam'e and Iv'an Ram'irez},
  journal={The Astrophysical Journal},
  year={2012},
  volume={746},
  pages={102}
}
We present a program designed to obtain age-rotation measurements of solar-type dwarfs to be used in the calibration of gyrochronology relations at ages of several Gyr. This is a region of parameter space crucial for the large-scale study of the Milky Way, and where the only constraint available today is that provided by the Sun. Our program takes advantage of a set of wide binaries selected so that one component is an evolved star and the other is a main-sequence star of FGK type. In this way… Expand
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References

SHOWING 1-10 OF 77 REFERENCES
Time evolution of high-energy emissions of low-mass stars : I. Age determination using stellar chronology with white dwarfs in wide binaries
Context. Stellar ages are extremely diffi cult to determine and often subject to large uncertainties, especially for field low-mass stars. We plan to carry out a calibration of the decrease inExpand
Ages for illustrative field stars using gyrochronology: viability, limitations and errors
We here develop an improved way of using a rotating star as a clock, set it using the Sun, and demonstrate that it keeps time well. This technique, called gyrochronology, derives ages for low-massExpand
The Ages of Stars
The age of an individual star cannot be measured, only estimated through mostly model-dependent or empirical methods, and no single method works well for a broad range of stellar types or for a fullExpand
Stellar Rotation in M35: Mass-Period Relations, Spin-Down Rates, and Gyrochronology
We present the results of a five month photometric time-series survey for stellar rotation over a 40' × 40' field centered on the 150 Myr open cluster M35. We report rotation periods for 441 starsExpand
On the Rotational Evolution of Solar- and Late-Type Stars, Its Magnetic Origins, and the Possibility of Stellar Gyrochronology*
We propose a simple interpretation of the rotation period data for solar- and late-type stars. The open cluster and Mount Wilson star observations suggest that rotating stars lie primarily on twoExpand
Basic physical parameters of a selected sample of evolved stars
We present the detailed spectroscopic analysis of 72 evolved stars, which were previously studied for accurate radial velocity variations. Using one Hyades giant and another well studied star as theExpand
Abundance difference between components of wide binaries
We present iron abundance analysis for 23 wide binaries with main sequence components in the temperture range 4900-6300 K, taken from the sample of the pairs currently included in the radial velocityExpand
NEARBY STARS FROM THE LSPM-NORTH PROPER-MOTION CATALOG. I. MAIN-SEQUENCE DWARFS AND GIANTS WITHIN 33 PARSECS OF THE SUN
A list of 4131 dwarfs, subgiants, and giants located or suspected to be located within 33 pc of the Sun is presented. All the stars are drawn from the new Lepine Shara Proper Motion (LSPM)–NorthExpand
A SIMPLE NONLINEAR MODEL FOR THE ROTATION OF MAIN-SEQUENCE COOL STARS. I. INTRODUCTION, IMPLICATIONS FOR GYROCHRONOLOGY, AND COLOR-PERIOD DIAGRAMS
We here introduce a simple nonlinear model to describe the rotational evolution of cool stars on the main sequence. It is formulated only in terms of the Rossby number (Ro = P/τ), its inverse, andExpand
Stellar rotation in lower main-sequence stars measured from time variations in H and K emission-line fluxes. II. Detailed analysis of the 1980 observing season data.
For a sample of 47 lower main-sequence stars, including the Sun, and eight evolved stars, the relative strength of the Ca n H and K emission cores has been measured daily over a nearly continuousExpand
...
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3
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5
...