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2024ApJ...967L...2M - Astrophys. J., 967, L2 (2024/May-3)

High-resolution Pan-STARRS and SMA Observations of IRAS 23077+6707: A Giant Edge-on Protoplanetary Disk.

MONSCH K., LOVELL J.B., BERGHEA C.T., EDENHOFER G., KEATING G.K., ANDREWS S.M., BAYYARI A., DRAKE J.J. and WILNER D.J.

Abstract (from CDS):

We present resolved images of IRAS 23077+6707 (“Dracula's Chivito”) in 1.3 mm/225 GHz thermal dust and CO gas emission with the Submillimeter Array (SMA) and optical (0.5-0.8 μm) scattered light with the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The Pan-STARRS data show a bipolar distribution of optically scattering dust that is characteristic for disks observed at high inclinations. Its scattered light emission spans ∼14″, with two highly asymmetric filaments extending along the upper bounds of each nebula by ∼9″. The SMA data measure 1.3 mm continuum dust as well as 12CO, 13CO, and C18O J = 2 - 1 line emission over 12″-14″ extents, with the gas presenting the typical morphology of a disk in Keplerian rotation, in both position-velocity space and in each CO line spectrum. IRAS 23077+6707 has no reported distance estimate, but if it is located in the Cepheus star-forming region (180-800 pc), it would have a radius spanning thousands of astronomical units. Taken together, we infer IRAS 23077+6707 to be a giant and gas-rich edge-on protoplanetary disk, which to our knowledge is the largest in extent so far discovered.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Protoplanetary disks - Herbig Ae/Be stars - Submillimeter astronomy - Astrochemistry - Young stellar objects - Pre-main sequence stars

Simbad objects: 11

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