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Outbursting Young Stellar Object PGIR 20dci in the Perseus Arm

Hillenbrand, Lynne A. and De, Kishalay and Hankins, Matthew and Kasliwal, Mansi M. and Rebull, Luisa M. and Lau, Ryan M. and Cutri, Roc M. and Ashley, Michael C. B. and Karambelkar, Viraj R. and Moore, Anna M. and Travouillon, T. and Mainzer, A. K. (2021) Outbursting Young Stellar Object PGIR 20dci in the Perseus Arm. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20210204-092654941

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Abstract

We report the discovery of a likely outbursting Class I young stellar object, associated with the star-forming region NGC 281-W (distance ∼2.8 kpc). The source is currently seen only at infrared wavelengths, appearing in both the Palomar Gattini InfraRed (1.2 μm) and the Near Earth Object Widefield Infrared Survey Explorer (3.4 and 4.6 μm) photometric time-domain surveys. Recent near-infrared imaging reveals a new, extended scattered light nebula. Recent near-infrared spectroscopy confirms the similarity of PGIR 20dci to FU Ori type sources, based on strong molecular absorption in CO, H₂O, and OH, weak absorption in several atomic lines, and a warm wind/outflow as indicated by a P Cygni profile in the HeI 10830 A line. This is a rare case of an FU Ori star with a well-measured long term photometric rise before a sharper outburst, and the second instance of an FU Ori star with a documented two-step brightening in the mid-infrared.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/2101.04203arXivDiscussion Paper
ORCID:
AuthorORCID
De, Kishalay0000-0002-8989-0542
Hankins, Matthew0000-0001-9315-8437
Kasliwal, Mansi M.0000-0002-5619-4938
Rebull, Luisa M.0000-0001-6381-515X
Cutri, Roc M.0000-0002-0077-2305
Karambelkar, Viraj R.0000-0003-2758-159X
Moore, Anna M.0000-0002-2894-6936
Travouillon, T.0000-0001-9304-6718
Additional Information:Attribution 4.0 International (CC BY 4.0). Palomar Gattini-IR (PGIR) is generously funded by Caltech, Australian National University, the Mt Cuba Foundation, the Heising Simons Foundation, the Binational Science Foundation. PGIR is a collaborative project among Caltech, Australian National University, University of New South Wales, Columbia University and the Weizmann Institute of Science. MMK acknowledges generous support from the David and Lucille Packard Foundation. Facilities: Palomar Gattini IR, ZTF, Keck/NIRES, Keck/DEIMOS, Spitzer, WISE, NEOWISE, IRSA
Group:Astronomy Department, Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
Australian National UniversityUNSPECIFIED
University of New South WalesUNSPECIFIED
Mt. Cuba Astronomical FoundationUNSPECIFIED
Heising-Simons FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Columbia UniversityUNSPECIFIED
Weizmann Institute of ScienceUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20210204-092654941
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210204-092654941
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107900
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:04 Feb 2021 21:54
Last Modified:04 Feb 2021 21:54

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