THE YOUNG STELLAR POPULATION OF LYNDS 1340. AN INFRARED VIEW

Journal Article · Wed Jun 01 00:00:00 EDT 2016 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.3847/0067-0049/224/2/22· OSTI ID:22661071

Kun, M.; Moór, A. ^[1]; Wolf-Chase, G. ^[2]; Apai, D. ^[3]; Balog, Z. ^[4]; O’Linger-Luscusk, J. ^[5]

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1. Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, H-1121 Budapest, Konkoly Thege út 15-17 (Hungary)
2. Astronomy Department, Adler Planetarium, 1300 South Lake Shore Drive, Chicago, IL 60605 (United States)
3. Steward Observatory, 933 N. Cherry Avenue, Tucson, AZ 85719 (United States)
4. Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany)
5. On leave from California Institute of Technology, 1200 E. California Avenue, Pasadena, CA 91125 (United States)

We present results of an infrared study of the molecular cloud Lynds 1340, forming three groups of low- and intermediate-mass stars. Our goals are to identify and characterize the young stellar population of the cloud, study the relationships between the properties of the cloud and the emergent stellar groups, and integrate L1340 into the picture of the star-forming activity of our Galactic environment. We selected candidate young stellar objects (YSOs) from the Spitzer and WISE databases using various published color criteria and classified them based on the slope of the spectral energy distribution (SED). We identified 170 Class II, 27 flat SED, and 45 Class 0/I sources. High angular resolution near-infrared observations of the RNO 7 cluster, embedded in L1340, revealed eight new young stars of near-infrared excess. The surface density distribution of YSOs shows three groups, associated with the three major molecular clumps of L1340, each consisting of ≲100 members, including both pre-main-sequence stars and embedded protostars. New Herbig–Haro objects were identified in the Spitzer images. Our results demonstrate that L1340 is a prolific star-forming region of our Galactic environment in which several specific properties of the intermediate-mass mode of star formation can be studied in detail.

• OSTI ID: 22661071
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 224, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CLOUDS
COLOR
DENSITY
ENERGY SPECTRA
ENVIRONMENT
HERBIG-HARO OBJECTS
IMAGES
MAIN SEQUENCE STARS
MASS
MILKY WAY
PROTOSTARS
RESOLUTION
STAR CLUSTERS
STAR EVOLUTION
SURFACES