THE DISTANCE TO NGC 2264

By E. Baxter, K. Covey, August Muench, G. Fűrész, L. Rebull, A. Szentgyorgyi. 2009

236 citations recorded by the source corpus.

We determine the distance to the open cluster NGC 2264 using a statistical analysis of cluster member inclinations. We derive distance-dependent values of sin i (where i is the inclination angle) for 97 stars in NGC 2264 from the rotation periods, luminosities, effective temperatures, and projected equatorial rotation velocities, vsin i, measured for these stars. We have measured 96 of the vsin i values in our sample by analyzing high-resolution spectra with a cross-correlation technique. We model the observed distribution of sin i for the cluster by assuming that member stars have random axial orientations and by adopting prescriptions for the measurement errors in our sample. By adjusting the distance assumed in the observed sin i distribution until it matches the modeled distribution, we obtain a best-fit distance for the cluster. We find the data to be consistent with a distance to NGC 2264 of 913 pc. Quantitative tests of our analysis reveal uncertainties of 40 and 110 pc due to sampling and systematic effects, respectively. This distance estimate suggests a revised age for the cluster of ∼1.5 Myr, although more detailed investigations of the full cluster membership are required to draw strong conclusions.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/f4425ff4b0c8b4b7da43a3d190d5ffe8d6d80603

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In Astronomy and Astrophysics

1. F. Gallet
2. J. Bouvier
3. G. Fűrész
4. M. Mateo
5. L. Hartmann
6. J. Tobin
7. K. Luhman
8. L. Hillenbrand

In Instrumentation

1. F. Gallet
2. M. Mateo
3. L. Hartmann
4. J. Bouvier
5. J. Tobin
6. K. Luhman
7. M. Gudel
8. Colin P. Johnstone

Citations in the corpus

• KINEMATIC AND SPATIAL SUBSTRUCTURE IN NGC 2264 (2015, background): “The closest region of significant clustered star formation after the Orion Nebula Cluster is NGC 2264 (see Dahm 2008) at a distance of ∼760–900 pc (Sung et al. 1997; Baxter et al. 2009).”
• Improved angular momentum evolution model for solar-like stars (2013, background): “NGC 2264 The NGC 2264 cluster is 2-3 Myr old (Sung et al. 2009; Teixeira et al. 2012; Affer et al. 2013) located at a distance between 750 and 950 pc (Flaccomio et al. 1999; Mayne & Naylor 2008; Baxter et al. 2009; Cauley et al. 2012; Affer et al. 2013).”