Infrared and Radio Observations of a Small Group of Protostellar Objects in the Molecular Core, L1251-C

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dc.contributor.utaustinauthorLee, Jeong-Eunen_US
dc.contributor.utaustinauthorEvans, Neal J., IIen_US
dc.creatorKim, Junghaen_US
dc.creatorLee, Jeong-Eunen_US
dc.creatorChoi, Minhoen_US
dc.creatorBourke, Tyler L.en_US
dc.creatorEvans, Neal J., IIen_US
dc.creatorDi Francesco, Jamesen_US
dc.creatorCieza, Lucas A.en_US
dc.creatorDunham, Miranda M.en_US
dc.creatorKang, Mijuen_US
dc.date.accessioned2016-10-28T19:34:15Z
dc.date.available2016-10-28T19:34:15Z
dc.date.issued2015-05en_US
dc.description.abstractWe present a multi-wavelength observational study of a low-mass star-forming region, L1251-C, with observational results at wavelengths from the near-infrared to the millimeter. Spitzer Space Telescope observations confirmed that IRAS 22343+7501 is a small group of protostellar objects. The extended emission in the east-west direction with its intensity peak at the center of L1251A has been detected at 350 and 850 mu m with the Caltech Submillimeter Observatory and James Clerk Maxwell telescopes, tracing dense envelope material around L1251A. The single-dish data from the Korean VLBI Network and TRAO telescopes show inconsistencies between the intensity peaks of several molecular emission lines and that of the continuum emission, suggesting complex distributions of molecular abundances around L1251A. The Submillimeter Array interferometer data, however, show intensity peaks of CO 2-1 and (CO)-C-13 2-1 located at the position of IRS 1, which is both the brightest source in the Infrared Array Camera image and the weakest source in the 1.3 mm dust-continuum map. IRS 1 is the strongest candidate for the driving source of the newly detected compact CO 2-1 outflow. Over the entire region (14' x 14') of L125l-C, 3 Class I and 16 Class II sources have been detected, including three young stellar objects (YSOs) in L1251A. A comparison between the average projected distance among the 19 YSOs in L1251-C and that among the 3 YSOs in L1251A suggests that L1251-C is an example of low-mass cluster Formation where protostellar objects form in a small group.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipBasic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education of the Korean government NRF-2012R1A1A2044689en_US
dc.description.sponsorshipBK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Koreaen_US
dc.description.sponsorshipKorea Astronomy and Space Science Institute (KASI) grant - Korea government (MEST)en_US
dc.description.sponsorshipNational Science Foundation 0708158en_US
dc.description.sponsorshipNASA NNX13AE54G, 1224608, 1230782, 1407en_US
dc.identifierdoi:10.15781/T2MC8RJ74
dc.identifier.citationKim, Jungha, Jeong-Eun Lee, Minho Choi, Tyler L. Bourke, Neal J. Evans II, James Di Francesco, Lucas A. Cieza, Michael M. Dunham, and Miju Kang. "Infrared and Radio observations of a small group of protostellar objects in the molecular core, L1251-C." The Astrophysical Journal Supplement Series, Vol. 218, No. 1 (May., 2015): 5.en_US
dc.identifier.doi10.1088/0067-0049/218/1/5en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/2152/42916
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Supplement Seriesen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectism: individual objects (l1251-c)en_US
dc.subjectism: jets and outflowsen_US
dc.subjectstars:en_US
dc.subjectFormationen_US
dc.subjectstars: protostarsen_US
dc.subjectyoung stellar objectsen_US
dc.subjectnearby dense coresen_US
dc.subjectspitzer c2d surveyen_US
dc.subjectarrayen_US
dc.subjectcamera iracen_US
dc.subjectsubmillimeter arrayen_US
dc.subjectstar-Formationen_US
dc.subjectspace-telescopeen_US
dc.subjectembedded sourceen_US
dc.subjectwater masersen_US
dc.subjectsmall cloudsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleInfrared and Radio Observations of a Small Group of Protostellar Objects in the Molecular Core, L1251-Cen_US
dc.typeArticleen_US

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