Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

UV spectropolarimetry with Polstar: protoplanetary disks

Julkaisun tekijät: Wisniewski John.P., Berdyugin Andrei V., Berdyugina Svetlana V., Danchi Wwilliam C., Dong Ruoging, Oudmaijer Rene D., Airapetian Vladimir S., Brittain Sean D., Gayley Ken, Ignace Richard, Langlois Maud, Lawson Kellen D., Lomax Jamie R., Rich Evan A., Tamura Motohide, Vink Jorick S., Scowen Paul A.

Kustantaja: Springer Science and Business Media B.V.

Julkaisuvuosi: 2022

Journal: Astrophysics and Space Science

Tietokannassa oleva lehden nimi: Astrophysics and Space Science

Volyymi: 367

Julkaisunumero: 12




Polstar is a proposed NASA MIDEX mission that carries a high resolution UV spectropolarimeter capable of measure all four Stokes parameters onboard a 60 cm telescope. The mission has been designed to pioneer the field of time-domain UV spectropolarimetry. Time domain UV spectropolarimetry offers the best resource to determine the geometry and physical conditions of protoplanetary disks from the stellar surface to <5 AU.We detail two key objectives that a dedicated time domain UV spectropolarimetry survey, such as that enabled by Polstar or a similar mission concept, could achieve: 1) Test the hypothesis that magneto-accretion operating in young planet-forming disks around lower-mass stars transitions to boundary layer accretion in planet-forming disks around higher mass stars; and 2) Discriminate whether transient events in the innermost regions of planet-forming disks of intermediate mass stars are caused by inner disk mis-alignments or from stellar or disk emissions.

Last updated on 2023-03-02 at 08:17