dc.contributor.author | Naylor, T | |
dc.contributor.author | Hillenbrand, L | |
dc.contributor.author | Contreras, C | |
dc.contributor.author | Morrell, S | |
dc.contributor.author | Kuhn, M | |
dc.contributor.author | Cutri, R | |
dc.contributor.author | Rebel, L | |
dc.contributor.author | Hodgkin, S | |
dc.contributor.author | Froebrich, D | |
dc.contributor.author | Mainzer, A | |
dc.date.accessioned | 2018-12-20T10:17:57Z | |
dc.date.issued | 2018-12-20 | |
dc.description.abstract | We report on the source Gaia 17bpi and identify it as a new, ongoing FU Ori type outburst, associated
with a young stellar object. The optical lightcurve from Gaia exhibited a 3.5 mag rise with the source
appearing to plateau in mid/late 2018. Mid-infrared observations from NEOWISE also show a >3
mag rise that occurred in two stages, with the second one coincident with the optical brightening,
and the first one preceding the optical brightening by ∼1.5 years. We model the outburst as having
started between October and December of 2014. This wavelength-dependent aspect of young star
accretion-driven outbursts has never been documented before. Both the mid-infrared and the optical
colors of the object become bluer as the outburst proceeds. Optical spectroscopic characteristics in the
outburst phase include: a GK-type absorption spectrum, strong wind/outflow in e.g. Mgb, NaD, Hα,
K I, O I, and Ca II profiles, and detection of Li I 6707 ˚A. The infrared spectrum in the outburst phase
is similar to that of an M-type spectrum, notably exhibiting prominent H2O and 12CO (2-0) bandhead
absorption in the K-band, and likely He I wind in the Y-band. The new FU Ori source Gaia 17bpi is
associated with a little-studied dark cloud in the galactic plane, located at a distance of 1.27 kpc. | en_GB |
dc.description.sponsorship | Leverhulme Trust | en_GB |
dc.description.sponsorship | Science and Technology Facilities Council | en_GB |
dc.identifier.citation | Vol. 869 (2), article 146 | en_GB |
dc.identifier.doi | 10.3847/1538-4357/aaf414 | |
dc.identifier.grantnumber | RPG-2016-203 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/35223 | |
dc.language.iso | en | en_GB |
dc.publisher | American Astronomical Society / IOP Publishing | en_GB |
dc.rights | © 2018. The American Astronomical Society. All rights reserved | |
dc.subject | stars: activity | en_GB |
dc.subject | stars: circumstellar matter | en_GB |
dc.subject | stars: general | en_GB |
dc.subject | stars: pre-main sequence | en_GB |
dc.subject | stars: variables: general | en_GB |
dc.subject | stars: winds | en_GB |
dc.subject | outflows | en_GB |
dc.subject | infrared: stars | en_GB |
dc.title | Gaia 17bpi: An FU Ori Type Outburst | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2018-12-20T10:17:57Z | |
dc.identifier.issn | 1538-4357 | |
dc.description | This is the author accepted manuscript. The final version is available from IOP Publishing via the DOI in this record | en_GB |
dc.identifier.journal | Astrophysical Journal | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2018-11-15 | |
exeter.funder | ::Leverhulme Trust | en_GB |
exeter.funder | ::Science and Technology Facilities Council | en_GB |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2018-12-20 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2018-12-19T10:12:33Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2019-01-23T16:03:19Z | |
refterms.panel | B | en_GB |