On the mass accretion rate and infrared excess in Herbig Ae/Be Stars

Abstract

The present study makes use of the unprecedented capability of the Gaia mission to obtain the stellar parameters such as distance, age, and mass of HAeBe stars. The accuracy of Gaia DR2 astrometry is demonstrated from the comparison of the Gaia DR2 distances of 131 HAeBe stars with the previously estimated values from the literature. This is one of the initial studies to estimate the age and mass of a confirmed sample of HAeBe stars using both the photometry and distance from the Gaia mission. Mass accretion rates are calculated from $H\alpha$ line flux measurements of 106 HAeBe stars. Since we used distances and the stellar masses derived from the Gaia DR2 data in the calculation of mass accretion rate, our estimates are more accurate than previous studies. The mass accretion rate is found to decay exponentially with age, from which we estimated a disk dissipation timescale of $1.9\pm 0.1$ Myr. Mass accretion rate and stellar mass exhibits a power law relation of the form, ${\dot{M}}_{acc}$ $\propto$ $M_{\ast }^{2.8\pm 0.2}$. From the distinct distribution in the values of the infrared spectral index, $n_{2-4.6}$, we suggest the possibility of difference in the disk structure between Herbig Be and Herbig Ae stars.

arXiv comment14 pages, 1 table, 6 figures, accepted for publication in AJ

References in corpus (39)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• A Hipparcos census of the nearby OB associations
• Gaia Data Release 2: Photometric content and validation
• Gaia Data Release 2: using Gaia parallaxes
• Gaia broad band photometry
• Timescale of Mass Accretion in Pre-Main-Sequence Stars
• Accretion in Young Stellar/Substellar Objects
• Accretion in the Rho-Oph pre-main sequence stars
• Magnetospheric accretion-ejection processes in the classical T Tauri star AA
• Measuring Accretion in Young Substellar Objects: Approaching the Planetary Mass Regime
• A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements
• A spectroscopic survey of Herbig Ae/Be stars with X-Shooter I: Stellar parameters and accretion rates
• Magnetospheres and Disk Accretion in Herbig Ae/Be Stars
• Gaia DR2 study of Herbig Ae/Be stars
• Accretion disks in luminous young stellar objects
• Observational $5-20\mu$m Interstellar Extinction Curves Toward Star-Forming Regions Derived from Spitzer IRS Spectra
• Evolution of emission line activity in intermediate mass young stars
• Probing the circumstellar structure of Herbig Ae/Be stars
• On the binarity of Herbig Ae/Be stars
• Accretion rates and accretion tracers of Herbig Ae/Be stars
• X-ray flares in Orion young stars. I. Flare characteristics
• The Southern Proper Motion Program IV. The SPM4 Catalog
• Temperaments of young stars: Rapid mass-accretion rate changes in T Tauri and Herbig Ae stars
• Circumstellar disks around Herbig Be stars
• Accretion-related properties of Herbig Ae/Be stars. Comparison with T Tauris
• Optical spectroscopic variability of Herbig Ae/Be stars
• A spectroscopic survey of Herbig Ae/Be stars with X-Shooter II: Accretion diagnostic lines
• On the origin of the correlations between the accretion luminosity and emission line luminosities in pre-main sequence stars
• On the evolutionary stage of the unclassified B[e] star CD-42o11721
• Excitation mechanism of OI lines in Herbig Ae/Be stars
• Distinguishing post-AGB impostors in a sample of pre-main sequence stars
• Disk Dissipation Timescale of Pre-main Sequence Stars in Taurus

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