The low-mass pre-main sequence population of the stellar association LH 52 in the Large Magellanic Cloud discovered with Hubble Space Telescope WFPC2 Observations

Abstract

We report on the serendipitous discovery of ~ 500 low-mass candidate PMS stars in the vicinity of the stellar association LH 52 in the Large Magellanic Cloud. We present evidence that the red faint sequence of these stars seen in the CMD of LH 52 from HST/WFPC2 observations belongs only to the association and follows almost perfectly isochrone models for PMS stars of masses down to ~ 0.3 M_solar. We find that this feature has a Galactic counterpart and that the mass spectrum of the candidate PMS stars in LH 52 seems to correspond to a Salpeter IMF with a slope Gamma ~ -1.26 in the mass range 0.8 - 1.4 M_solar.

arXiv comment4 Pages - 3 figures - Accepted for publication in ApJ Letters

References in corpus (8)

• WFPC2 Stellar Photometry with HSTphot
• The CIDA Variability Survey of Orion OB1. I: the low-mass population of Ori OB 1a and 1b
• Photometric Identification of the low-Mass Population of Orion OB1b I: The sigma Ori Cluster
• The Low End of the Initial Mass Function in Young LMC Clusters: I. The Case of R136
• HST/NICMOS detection of a partially embedded, intermediate-mass pre-main-sequence population in the 30 Doradus Nebula
• Young Stellar Populations Around SN1987A
• The Initial Mass Function toward the low-mass end in the Large Magellanic Cloud with HST/WFPC2 Observations
• The Starburst IMF -- An Impossible Measurement?

Cited by in corpus (22)

• The Pisa pre-main sequence tracks and isochrones. A database covering a wide range of Z, Y, mass, and age values
• The stellar and sub-stellar IMF of simple and composite populations
• Spitzer View of Young Massive Stars in the LMC HII Complex N44
• A New Method for the Assessment of Age and Age-Spread of Pre-Main Sequence Stars in Young Stellar Associations of the Magellanic Clouds
• NGC 346 in the Small Magellanic Cloud. III. Recent Star Formation and Stellar Clustering Properties in the Bright HII Region N 66
• The Complete Initial Mass Function Down to the Sub-Solar Regime in the Large Magellanic Cloud with Hubble Space Telescope ACS Observations
• Massive Young Stellar Objects in the Large Magellanic Cloud: water masers and ESO-VLT 3-4 micron spectroscopy
• The Initial Mass Function of the Stellar Association NGC 602 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations
• The Star-Forming Region NGC 346 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations I. Photometry
• Clustered Star Formation in the Small Magellanic Cloud. A Spitzer/IRAC View of the Star-Forming Region NGC 602/N 90
• Discovery of the Pre-Main Sequence Population of the Stellar Association LH 95 in the Large Magellanic Cloud with Hubble Space Telescope ACS Observations
• The initial mass function of the rich young cluster NGC 1818 in the Large Magellanic Cloud
• Photometric determination of the mass accretion rates of pre-main sequence stars. VI. The case of LH 95 in the Large Magellanic Cloud
• Low-mass pre--main-sequence stars in the Magellanic Clouds
• The low-mass stellar mass functions of rich, compact clusters in the Large Magellanic Cloud
• Pre-main sequence stars in the stellar association N11 in the Large Magellanic Cloud
• The VMC Survey - XXXII. Pre-main sequence populations in the Large Magellanic Cloud
• Pre--Main-Sequence stellar populations across Shapley Constellation III. I. Photometric Analysis and Identification
• A Hubble View of Star Forming Regions in the Magellanic Clouds
• On the mass-function of GWTC-2 binary black hole systems and their progenitors
• The star formation process in the Magellanic Clouds
• The sub-solar Initial Mass Function in the Large Magellanic Cloud