CaltechAUTHORS
  A Caltech Library Service

New Young Star Candidates in CG4 and Sa101

Rebull, L. M. and Johnson, C. H. and Hoette, V. and Kim, J. S. and Laine, S. and Foster, M. and Laher, R. and Legassie, M. and Mallory, C. R. and McCarron, K. and Sherry, W. H. (2011) New Young Star Candidates in CG4 and Sa101. Astronomical Journal, 142 (1). Art. No. 25. ISSN 0004-6256. https://resolver.caltech.edu/CaltechAUTHORS:20110628-111924900

[img]
Preview
PDF - Published Version
See Usage Policy.

5Mb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20110628-111924900

Abstract

The CG4 and Sa101 regions together cover a region of ~0.5 deg^2 in the vicinity of a "cometary globule" that is part of the Gum Nebula. There are seven previously identified young stars in this region; we have searched for new young stars using mid- and far-infrared data (3.6-70 μm) from the Spitzer Space Telescope, combined with ground-based optical data and near-infrared data from the Two Micron All Sky Survey. We find infrared excesses in all six of the previously identified young stars in our maps and identify 16 more candidate young stars based on apparent infrared excesses. Most (73%) of the new young stars are Class II objects. There is a tighter grouping of young stars and young star candidates in the Sa101 region, in contrast to the CG4 region, where there are fewer young stars and young star candidates, and they are more dispersed. Few likely young objects are found in the "fingers" of the dust being disturbed by the ionization front from the heart of the Gum Nebula.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-6256/142/1/25DOIArticle
http://iopscience.iop.org/1538-3881/142/1/25PublisherArticle
ORCID:
AuthorORCID
Rebull, L. M.0000-0001-6381-515X
Laine, S.0000-0003-1250-8314
Laher, R.0000-0003-2451-5482
Additional Information:© 2011 American Astronomical Society. Received 2011 March 24; accepted 2011 April 29; published 2011 June 13. This work was performed as part of the NASA/IPAC Teacher Archive Research Program (NITARP; http://nitarp.ipac.caltech.edu), class of 2010. We acknowledge here all of the students and other folks who contributed their time and energy to this work and the related poster papers presented at the 2011 January American Astronomical Society (AAS) meeting in Seattle,WA. They include—with V. Hoette: C. Gartner, J. VanDerMolen, L. Gamble, L. Matsche, A. McCartney, M. Doering, S. Brown, R. Wernis, J. Wirth, and M. Berthoud; with C. Johnson: R. Crump, N. Killingstad, T. McCanna, S. Caruso, A. Laorr, K., Mork, E. Steinbergs, and E. Wigley; with C. Mallory: N. Mahmud. We thank J. R. Stauffer for helpful comments on the manuscript. J. S. Kim and M. Foster thank the NASA Space Grant program at the University of Arizona. This research has made use of NASA’s Astrophysics Data System (ADS) Abstract Service, and of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of data products from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. These data were served by the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of the Digitized Sky Surveys, which were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions. This research has made use of the NASA/ IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The research described in this paper was partially carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA Space Grant ProgramUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:circumstellar matter; infrared: stars; stars: formation; stars: pre-main sequence
Issue or Number:1
Classification Code:PACS: 98.38.Dq; 97.21.+a; 97.10.Fy
Record Number:CaltechAUTHORS:20110628-111924900
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110628-111924900
Official Citation:New Young Star Candidates in CG4 and Sa101 L. M. Rebull et al. 2011 The Astronomical Journal 142 25
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24241
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:28 Jun 2011 22:27
Last Modified:13 Nov 2019 23:36

Repository Staff Only: item control page