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

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 (α=2.59). It remains shallower for less massive stars (α=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.

Accepted ApJ (Jan 10, 2001 issue)

Cited by in corpus (56)

• The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems
• Control of star formation by supersonic turbulence
• A Universal Stellar Initial Mass Function? A Critical Look at Variations
• The Luminosity & Mass Function of the Trapezium Cluster: From B stars to the Deuterium Burning Limit
• How Dry is the Brown Dwarf Desert?: Quantifying the Relative Number of Planets, Brown Dwarfs and Stellar Companions around Nearby Sun-like Stars
• A Revised Effective Temperature Scale for the Kepler Input Catalog
• The stellar and sub-stellar IMF of simple and composite populations
• New cooling sequences for old white dwarfs
• Spectroscopy of Very Low Mass Stars and Brown Dwarfs in IC2391: Lithium depletion and Halpha emission
• Probing The Lower Mass Limit for Supernova Progenitors and the High-Mass End of the Initial-Final Mass Relation from White Dwarfs in the Open Cluster M35 (NGC 2168)
• The Distances to Open Clusters from Main-Sequence Fitting. III. Improved Accuracy with Empirically Calibrated Isochrones
• High resolution spectroscopy of ultracool M dwarfs
• The Substellar Mass Function in sigma Orionis
• The Stellar Metallicity Distribution Function of the Galactic Halo from SDSS Photometry
• Photometry and membership for low mass stars in the young open cluster NGC 2516
• The Substellar Mass Function: A Bayesian Approach
• Spectroscopy of Very Low Mass Stars and Brown Dwarfs in the Lambda Orionis Star Forming Region. I. Enlarging the census down to the planetary mass domain in Collinder 69
• On the Constancy of the Characteristic Mass of Young Stars
• The CFHT Open Star Cluster Survey. IV. Two Rich, Young Open Star Clusters: NGC 2168 (M35) and NGC 2323 (M50)
• The CFHT Open Star Cluster Survey. III. The White Dwarf Cooling Age of the Rich Open Star Cluster NGC 2099 (M37)
• Optimal photometry for colour-magnitude diagrams and its application to NGC 2547
• A Substellar Mass Function for Alpha Per
• On the temporal evolution of the stellar mass function in Galactic clusters
• The substellar population of the young cluster lambda Orionis
• Variability in the stellar initial mass function at low and high mass: 3-component IMF models
• Mergers of close primordial binaries
• Astrometric and photometric initial mass functions from the UKIDSS Galactic Clusters Survey: I The Pleiades
• WIYN Open Cluster Study 5. Lithium Depletion and Metallicity in G and K Dwarfs of the Open Cluster M35
• A census of very-low-mass stars and brown dwarfs in the sigma Orionis cluster
• The Complete Initial Mass Function Down to the Sub-Solar Regime in the Large Magellanic Cloud with Hubble Space Telescope ACS Observations
• WIYN Open Cluster Study XI: WIYN 3.5m Deep Photometry of M35 (NGC 2168)
• Low-mass members of the young cluster IC 4665 and pre-main-sequence lithium depletion
• The effect of stellar activity on the LiI 6708, NaI 5896 and KI 7699 Ålines: A comparison with the Pleiades, field stars and the Sun
• A statistical method to determine open cluster metallicities
• Exploring the Lower Mass Function in the young open Cluster IC 4665
• Luminosity and Mass Function of the Galactic open cluster NGC 2422
• The stellar IMF of Galactic clusters and its evolution
• Astrometric and photometric initial mass functions from the UKIDSS Galactic Clusters Survey: II The Alpha Persei open cluster
• Li in Open Clusters: Cool Dwarfs in the Young, Subsolar Metallicity Cluster M35 (NGC 2168)
• A near-infrared survey for new low-mass members in Alpha Per
• The low-mass initial mass function of the field population in the Large Magellanic Cloud with Hubble Space Telescope WFPC2 Observations
• Messier 35 (NGC2168) DANCe I. Membership, proper motions and multi-wavelength photometry
• Stellar Spins in the Pleiades, Praesepe, and M35 Open Clusters
• Physical parameters of late M-type members of Chamaleon I and TW Hydrae Association: Dust settling, age dispersion and activity
• The mass function of IC4665 revisited by the UKIDSS Galactic Clusters Survey
• Tracing the Origins of Mass Segregation in M35: Evidence for Primordially Segregated Binaries
• Variation of the IMF
• Photometric Monitoring of Open Clusters I. The Survey
• A deep wide-field optical survey in the young open cluster Collinder 359
• A deep multi-band investigation of IC2391
• Clusters: age scales for stellar physics
• Are there brown dwarfs in globular clusters?
• The Initial Mass Function as given by the fragmentation
• Power-laws from critical gravitational collapse: The mass distribution of subsolar objects
• Universality of the subsolar mass distribution from critical gravitational collapse
• Cluster Density and the IMF