SIMBAD references

2009ApJ...693..430C - Astrophys. J., 693, 430-446 (2009/March-1)

Near-infrared imaging of the star-forming regions Sh2-157 and Sh2-152.


Abstract (from CDS):

Near-infrared JHK' and H2 v = 1-0 S (1) imaging observations of the star-forming regions Sh2-157 and Sh2-152 are presented. The data reveal a cluster of young stars associated with H2 line emission in each region. Additionally, many IR point sources are found in the dense core of each molecular cloud. Most of these sources exhibit infrared color excesses typical of T Tauri stars, Herbig Ae/Be stars, and protostars. Several display the characteristics of massive stars. We calculate histograms of the K'-magnitude and [H - K'] color for all sources, as well as two-color and color-magnitude diagrams. The stellar populations inside and outside the clusters are similar, suggesting that these systems are rather evolved. Shock-driven H2 emission knots are also detected, which may be related to evident subclusters in an earlier evolutionary stage.

Abstract Copyright:

Journal keyword(s): ISM: individual (S152, S157) - ISM: jets and outflows - ISM: lines and bands - stars: formation

VizieR on-line data: <Available at CDS (J/ApJ/693/430): table1.dat table3.dat>

Nomenclature: Table 1: [CYY2009] Sh 2-152 NIRS NNN (Nos 1-369). Table 3: [CYY2009] Sh 2-157 NIRS NNN (Nos 1-405). Table 2: [CYY2009] Sh 2-152 ANN (Nos A1-A2, F1-F10, K1-K9). Table 4: [CYY2009] Sh 2-152 ANN (Nos A1-A2, F1-F7, K1-K2).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2. // All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 10

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