Relation between metallicities and spectral energy distributions of Herbig Ae/Be stars. A potential link with planet formation

Abstract

(Abridged) The stellar metallicity, [M/H], may have important implications for planet formation. In particular, Kama et al. proposed that the deficit of refractory elements in the surfaces of some Herbig Ae/Be stars (HAeBes) may be linked to the presence of disk cavities likely caused by Jovian planets that trap the metal-rich content. This work aims to provide a robust test on the previous proposal by analyzing the largest sample of HAeBes with homogeneously derived [M/H] values, stellar, and circumstellar properties. [M/H] values of 67 HAeBes were derived based on observed spectra and Kurucz synthetic models. Statistical analyses were carried out aiming to test the potential relation between [M/H] and the group I sources from the spectral energy distribution (SED) classification by Meeus et al., associated to the presence of cavities potentially carved by giant planets. Our study robustly confirms that group I sources tend to have a lower [M/H] than that of group II HAeBes. A similar analysis involving SED-based transitional disks does not reveal such a relation, indicating that not all processes capable of creating dust holes have an effect on the stellar abundances. We also show that the observed [M/H] differences are not driven by environmental effects. Finally, group I sources tend to have stronger (sub-) mm continuum emission presumably related to the presence of giant planets. Indeed, literature results indicate that disk substructures probably associated to their presence are up to ten times more frequent in group I HAeBes. We provide indirect evidences suggesting that giant planets are more frequent around group I/low [M/H] stars than around the rest of the HAeBes. However, the direct test requires multiple detections of forming planets in their disks, so far limited to the candidate around the metal depleted ([M/H] = -0.35 +- 0.25) group I HAeBe star AB Aur.

16 pages, 10 figures, 2 tables. Accepted in A&A

References in corpus (28)

• Gaia Data Release 3: Summary of the content and survey properties
• Gaia Early Data Release 3: The astrometric solution
• APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
• Two accreting protoplanets around the young star PDS 70
• Dust dynamics during protoplanetary disc clearing
• Nine localised deviations from Keplerian rotation in the DSHARP circumstellar disks: Kinematic evidence for protoplanets carving the gaps
• Images of Embedded Jovian Planet Formation At A Wide Separation Around AB Aurigae
• Parameters of Herbig Ae/Be and Vega-type stars
• On the origin of stars with and without planets. Tc trends and clues to Galactic evolution
• Heavy metal rules. I. Exoplanet incidence and metallicity
• Homogeneous study of Herbig Ae/Be stars from spectral energy distributions and Gaia EDR3
• The protoplanetary disk population in the rho-Ophiuchi region L1688 and the time evolution of Class II YSOs
• Catalogue of new Herbig Ae/Be and classical Be stars. A machine learning approach to Gaia DR2
• Perturbers: SPHERE detection limits to planetary-mass companions in protoplanetary disks
• Searching for signatures of planet formation in stars with circumstellar debris discs
• Fingerprints of giant planets in the composition of solar twins
• A population of transition disks around evolved stars: Fingerprints of planets? Catalog of disks surrounding Galactic post-AGB binaries
• On the mass accretion rate and infrared excess in Herbig Ae/Be Stars
• Investigating the Planet-Metallicity Correlation for Hot Jupiters
• The mass and size of Herbig disks as seen by ALMA
• HST/WFC3 H$\alpha$ Direct-Imaging Detection of a Point-like Source in the Disk Cavity of AB Aur
• Stellar parameters and accretion rate of the transition disk star HD 142527 from X-Shooter
• A catalog of early-type Hα emission line stars and 58 newly confirmed Herbig Ae/Bes from LAMOST DR7
• High-resolution 25 μm imaging of the disks around Herbig Ae/Be stars
• The Origin of the Doppler-flip in HD 100546: a large scale spiral arm generated by an inner binary companion
• Clumpy accretion in pre-main-sequence stars as a source of perturbations in circumstellar disks
• Spectroscopic Confirmation of a Population of Isolated, Intermediate-Mass YSOs
• Hαspectropolarimetry of RY Tau and PX Vul

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