SIMBAD references

2015MNRAS.448.1551R - Mon. Not. R. Astron. Soc., 448, 1551-1573 (2015/April-1)

The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation.

RUMBLE D., HATCHELL J., GUTERMUTH R.A., KIRK H., BUCKLE J., BEAULIEU S.F., BERRY D.S., BROEKHOVEN-FIENE H., CURRIE M.J., FICH M., JENNESS T., JOHNSTONE D., MOTTRAM J.C., NUTTER D., PATTLE K., PINEDA J.E., QUINN C., SALJI C., TISI S., WALKER-SMITH S., DI FRANCESCO J., HOGERHEIJDE M.R., WARD-THOMPSON D., ALLEN L.E., CIEZA L.A., DUNHAM M.M., HARVEY P.M., STAPELFELDT K.R., BASTIEN P., BUTNER H., CHEN M., CHRYSOSTOMOU A., COUDE S., DAVIS C.J., DRABEK-MAUNDER E., DUARTE-CABRAL A., FIEGE J., FRIBERG P., FRIESEN R., FULLER G.A., GRAVES S., GREAVES J., GREGSON J., HOLLAND W., JONCAS G., KIRK J.M., KNEE L.B.G., MAIRS S., MARSH K., MATTHEWS B.C., MORIARTY-SCHIEVEN G., RAWLINGS J., RICHER J., ROBERTSON D., ROSOLOWSKY E., SADAVOY S., THOMAS H., TOTHILL N., VITI S., WHITE G.J., WILSON C.D., WOUTERLOOT J., YATES J. and ZHU M.

Abstract (from CDS):

We present SCUBA-2 450 and 850µm observations of the Serpens MWC 297 region, part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey of nearby star-forming regions. Simulations suggest that radiative feedback influences the star formation process and we investigate observational evidence for this by constructing temperature maps. Maps are derived from the ratio of SCUBA-2 fluxes and a two-component model of the JCMT beam for a fixed dust opacity spectral index of β = 1.8. Within 40 arcsec of the B1.5Ve Herbig star MWC 297, the submillimetre fluxes are contaminated by free-free emission with a spectral index of 1.03±0.02, consistent with an ultracompact HII region and polar winds/jets. Contamination accounts for 73±5 per cent and 82±4 per cent of peak flux at 450µm and 850 µm, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850µm clumps identified by the fellwalker algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use Tbol to classify nine YSOs with masses 0.09 to 5.1M☉. We find two Class 0, one Class 0/I, three Class I and three Class II sources. The mean temperature is 15±2 K for the nine YSOs and 32±4 K for the 14 starless clumps. We observe a starless clump with an abnormally high mean temperature of 46±2 K and conclude that it is radiatively heated by the star MWC 297. Jeans stability provides evidence that radiative heating by the star MWC 297 may be suppressing clump collapse.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): radiative transfer - catalogues - stars: formation - stars: protostars - HII regions - submillimetre: general

VizieR on-line data: <Available at CDS (J/MNRAS/448/1551): table2.dat table3.dat table7.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 26

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