Accretion disks around young stars: the cradles of planet formation

Semenov, D.

doi:10.1051/epn/2020104

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…From the Gaia CMD analysis we found that all the co-moving stars are coeval with IL Cep and they are PMS stars in the age range 0.1 -1 Myr. The stars with ages of a few Myr should be actively accreting from its circumstellar disk (Furlan et al 2011;Semenov & Teague 2020). The accreting young stars will show infrared excess in their spectral energy distribution due to the thermal re-radiation from the dust in the circumstellar disk (Hillenbrand et al 1992;Malfait et al 1998).…”

Section: Identification Of Circumstellar Disk Candidatesmentioning

confidence: 99%

Clustering of low mass stars around Herbig Be star IL Cep -- Evidence of "Rocket Effect" using Gaia EDR3 ?

Arun,

Mathew,

Maheswar

et al. 2021

Preprint

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We study the formation and the kinematic evolution of the early type Herbig Be star IL Cep and its environment. The young star is a member of the Cep OB3 association, at a distance of 798±9 pc, and has a "cavity" associated with it. We found that the B0V star HD 216658, which is astrometrically associated with IL Cep, is at the center of the cavity. From the evaluation of various pressure components created by HD 216658, it is established that the star is capable of creating the cavity. We identified 79 co-moving stars of IL Cep at 2 pc radius from the analysis of Gaia EDR3 astrometry. The transverse velocity analysis of the co-moving stars shows that they belong to two different populations associated with IL Cep and HD 216658, respectively. Further analysis confirms that all the stars in the IL Cep population are mostly coeval (∼ 0.1 Myr). Infrared photometry revealed that there are 26 Class II objects among the co-moving stars. The stars without circumstellar disk (Class III) are 65% of all the co-moving stars. There are 9 intense H𝛼 emission candidates identified among the co-moving stars using IPHAS H𝛼 narrow-band photometry. The dendrogram analysis on the Hydrogen column density map identified 11 molecular clump structures on the expanding cavity around IL Cep, making it an active star-forming region. The formation of the IL Cep stellar group due to the "rocket effect" by HD 216658 is discussed.

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Section: Identification Of Circumstellar Disk Candidatesmentioning

confidence: 99%

Clustering of low mass stars around Herbig Be star IL Cep -- Evidence of "Rocket Effect" using Gaia EDR3 ?

Arun,

Mathew,

Maheswar

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Clustering of low-mass stars around Herbig Be star IL Cep – evidence of ‘Rocket Effect’ using Gaia EDR3 ?

Mathew

Maheswar

Baug

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We study the formation and the kinematic evolution of the early type Herbig Be star IL Cep and its environment. The young star is a member of the Cep OB3 association, at a distance of 798±9 pc, and has a ”cavity” associated with it. We found that the B0V star HD 216658, which is astrometrically associated with IL Cep, is at the center of the cavity. From the evaluation of various pressure components created by HD 216658, it is established that the star is capable of creating the cavity. We identified 79 co-moving stars of IL Cep at 2 pc radius from the analysis of Gaia EDR3 astrometry. The transverse velocity analysis of the co-moving stars shows that they belong to two different populations associated with IL Cep and HD 216658, respectively. Further analysis confirms that all the stars in the IL Cep population are mostly coeval (∼ 0.1 Myr). Infrared photometry revealed that there are 26 Class II objects among the co-moving stars. The stars without circumstellar disk (Class III) are 65% of all the co-moving stars. There are 9 intense Hα emission candidates identified among the co-moving stars using IPHAS Hα narrow-band photometry. The dendrogram analysis on the Hydrogen column density map identified 11 molecular clump structures on the expanding cavity around IL Cep, making it an active star-forming region. The formation of the IL Cep stellar group due to the ”rocket effect” by HD 216658 is discussed.

show abstract

Accretion disks around young stars: the cradles of planet formation

Cited by 2 publications

References 17 publications

Clustering of low mass stars around Herbig Be star IL Cep -- Evidence of "Rocket Effect" using Gaia EDR3 ?

Clustering of low mass stars around Herbig Be star IL Cep -- Evidence of "Rocket Effect" using Gaia EDR3 ?

Clustering of low-mass stars around Herbig Be star IL Cep – evidence of ‘Rocket Effect’ using Gaia EDR3 ?

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