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arXiv:astro-ph/0011136 (astro-ph)
[Submitted on 7 Nov 2000]

Title:From the Top to the Bottom of the Main Sequence: A Complete Mass Function of the Young Open Cluster M35

Authors:D. Barrado y Navascués (1,2), John R. Stauffer (3,4), Jerome Bouvier (5), Eduardo L. Martín (6), ((1) Max-Planck-Institut für Astronomie. (2) Universidad Autonoma de Madrid, (3) Harvard--Smithsonian Center for Astrophysics, (4) IPAC, (5) Grenoble (6) Institute for Astronomy, University of Hawaii)
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Abstract: We present very deep and accurate photometry of the open cluster M35 (VRIc filters). We have covered a region of 27.5x27.5 square arcmin.
The data range from Ic=12.5 to 23.5 mag, and the color intervals are 0.4\le(V-I)c\le3.0, 0.5\le(R-I)c\le2.5. Roughly, these values span from 1.6 M_\odot down to the substellar limit. By using the location of the stars on color-magnitude and color-color diagrams, we have selected candidate members of this cluster. We have merged our sample with previously published data and obtained a color-magnitude diagram for the complete stellar population of the cluster, covering the spectral range early B - mid M. The Mass Function increases monotonically, when plotted in a log-log form, until it reaches ~0.8 M_\odot (\alpha=2.59). It remains shallower for less massive stars (\alpha=0.81 for 0.8-0.2 M_\odot), whereas a decrease ins observed for stars close to the substellar regime. The total mass of the cluster is ~1600 M_\odot in the area covered by this study.
Comments: Accepted ApJ (Jan 10, 2001 issue)
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0011136
  (or arXiv:astro-ph/0011136v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0011136
Related DOI: https://doi.org/10.1086/318283

Submission history

From: David Barrado y Navascues [view email]
[v1] Tue, 7 Nov 2000 12:00:52 UTC (190 KB)
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