SIMBAD references

2015ApJ...806L..10D - Astrophys. J., 806, L10 (2015/June-2)

Near-IR high-resolution imaging polarimetry of the SU Aur disk: clues for tidal tails?

DE LEON J., TAKAMI M., KARR J.L., HASHIMOTO J., KUDO T., SITKO M., MAYAMA S., KUSAKABE N., AKIYAMA E., LIU H.B., USUDA T., ABE L., BRANDNER W., BRANDT T.D., CARSON J., CURRIE T., EGNER S.E., FELDT M., FOLLETTE K., GRADY C.A., GOTO M., GUYON O., HAYANO Y., HAYASHI M., HAYASHI S., HENNING T., HODAPP K.W., ISHII M., IYE M., JANSON M., KANDORI R., KNAPP G.R., KUZUHARA M., KWON J., MATSUO T., McELWAIN M.W., MIYAMA S., MORINO J.-I., MORO-MARTIN A., NISHIMURA T., PYO T.-S., SERABYN E., SUENAGA T., SUTO H., SUZUKI R., TAKAHASHI Y., TAKATO N., TERADA H., THALMANN C., TOMONO D., TURNER E.L., WATANABE M., WISNIEWSKI J.P., YAMADA T., TAKAMI H. and TAMURA M.

Abstract (from CDS):

We present new high-resolution H-band imaging observations of the circumstellar disk around the T Tauri star SU Aur. Our observations with Subaru-HiCIAO have revealed the presence of scattered light as close as 0." 15 (Å20 AU) to the star. Within our image, we identify bright emission associated with a disk with a minimum radius of Å90 AU, an inclination of Å35° from the plane of the sky, and an approximate PA of for the major axis. We find a brightness asymmetry between the northern and southern sides of the disk due to a non-axisymmetric disk structure. We also identify a pair of asymmetric tail structures extending east and west from the disk. The western tail extends at least 2." 5 (350 AU) from the star, and is probably associated with a reflection nebula previously observed at optical and near-IR wavelengths. The eastern tail extends at least 1" (140 AU) at the present signal-to-noise. These tails are likely due to an encounter with an unseen brown dwarf, but our results do not exclude the explanation that these tails are outflow cavities or jets.

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Journal keyword(s): polarization - protoplanetary disks - stars: individual: SU Aur - stars: pre-main sequence

Simbad objects: 14

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