Spectroscopic Confirmation of a Population of Isolated, Intermediate-mass Young Stellar Objects
View/
Author
Kuhn, Michael A.
Saber, Ramzi
Povich, Matthew S.
de Souza, Rafael S.
Krone-Martins, Alberto
Ishida, Emille E.~O.
Zucker, Catherine
Benjamin, Robert A.
Hillenbrand, Lynne A.
Castro-Ginard, Alfred
Zhou, Xingyu
Collaboration, COIN
Attention
2299/26603
Abstract
Wide-field searches for young stellar objects (YSOs) can place useful constraints on the prevalence of clustered versus distributed star formation. The Spitzer/IRAC Candidate YSO (SPICY) catalog is one of the largest compilations of such objects (∼120,000 candidates in the Galactic midplane). Many SPICY candidates are spatially clustered, but, perhaps surprisingly, approximately half the candidates appear spatially distributed. To better characterize this unexpected population and confirm its nature, we obtained Palomar/DBSP spectroscopy for 26 of the optically bright (G < 15 mag) “isolated” YSO candidates. We confirm the YSO classifications of all 26 sources based on their positions on the Hertzsprung-Russell diagram, H and Ca ii line emission from over half the sample, and robust detection of infrared excesses. This implies a contamination rate of
Publication date
2023-01-31Published in
The Astronomical JournalPublished version
https://doi.org/10.3847/1538-3881/ac9314Other links
http://hdl.handle.net/2299/26603Metadata
Show full item recordRelated items
Showing items related by title, author, creator and subject.
-
V-LoTSS: The circularly polarised LOFAR Two-metre Sky Survey
Callingham, J.~R.; Shimwell, T.~W.; Vedantham, H.~K.; Bassa, C.~G.; O'Sullivan, S.~P.; Yiu, T.~W.~H.; Bloot, S.; Best, P.~N.; Hardcastle, M.~J.; Haverkorn, M.; Kavanagh, R.~D.; Lamy, L.; Pope, B.~J.~S.; Röttgering, H.~J.~A.; Schwarz, D.~J.; Tasse, C.; van Weeren, R.~J.; White, G.~J.; Zarka, P.; Bomans, D.~J.; Bonafede, A.; Bonato, M.; Botteon, A.; Bruggen, M.; Chyży, K.~T.; Drabent, A.; Emig, K.~L.; Gloudemans, A.~J.; Gürkan, G.; Hajduk, M.; Hoang, D.~N.; Hoeft, M.; Iacobelli, M.; Kadler, M.; Kunert-Bajraszewska, M.; Mingo, B.; Morabito, L.~K.; Nair, D.~G.; Pérez-Torres, M.; Ray, T.~P.; Riseley, C.~J.; Rowlinson, A.; Shulevski, A.; Sweijen, F.; Timmerman, R.; Vaccari, M.; Zheng, J. (2023-02-17)We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We used the second data release of the 144 MHz LOFAR Two-metre Sky Survey to produce circularly polarised ... -
Extragalactic Radio Sources as a Piece of the Cosmological Jigsaw
Krause, M. (2018-02-26)Early on, extragalactic radio sources have pointed to a cosmologically evolv- ing Universe. They were also an important piece of evidence for the existence of supermassive black holes, now thought to be a key component of ... -
Evolution of X-Ray Activity in <25 Myr Old Pre-main Sequence Stars
Getman, Konstantin V.; Feigelson, Eric D.; Garmire, Gordon P.; Broos, Patrick S.; Kuhn, Michael A.; Preibisch, Thomas; Airapetian, Vladimir S. (2022-08-10)Measuring the evolution of X-ray emission from pre-main-sequence (PMS) stars gives insight into two issues: the response of magnetic dynamo processes to changes in the interior structure, and the effects of high-energy ...