2015MNRAS.448.1551R

Query : 2015MNRAS.448.1551R

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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Number of rows : 26
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* VX Cas Ae* 00 31 30.6818495040 +61 58 50.984946300 11.83 11.59 10.50 11.19 10.94 A0Vep 132 0
2 * alf UMi cC* 02 31 49.09456 +89 15 50.7923 3.00 2.62 2.02 1.53 1.22 F8Ib 673 2
3 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1454 1
4 NAME Per B1-E PoC 03 36 45.0 +31 12 40           ~ 30 0
5 NAME Per Region reg 03 37 00.0 +31 15 00           ~ 273 0
6 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 207 0
7 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 808 0
8 NAME Musca Cld 12 23 -71.3           ~ 222 0
9 Lupus 2 MoC 15 57 08 -37 47.1           ~ 114 1
10 Lupus 5 MoC 16 21 -37.5           ~ 63 0
11 Lupus 6 Cld 16 25 -40.3           ~ 51 1
12 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3636 1
13 NAME Scorpius Complex reg 16 51 00.0 -25 20 00           ~ 41 0
14 2MASS J18273670-0350047 Y*O 18 27 36.703 -03 50 04.71           ~ 3 0
15 2MASS J18273854-0350108 Y*O 18 27 38.5442710800 -03 50 10.894534044           ~ 4 0
16 EM* MWC 297 Ae* 18 27 39.5265500160 -03 49 52.133050776 15.57 14.34 12.31 11.34   B1.5Ve 297 0
17 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1102 2
18 NAME Serpens South Cluster Cl* 18 30 03.00 -02 01 58.2           ~ 133 0
19 NAME Aql Region reg 18 31.1 -02 10           ~ 392 0
20 LBN 028.77+03.43 HII 18 31 26.5 -02 04 22           ~ 230 2
21 NAME Aql Rift DNe 18 32 -01.0           ~ 316 1
22 NAME CrA Complex reg 19 15 00.0 -37 30 00           ~ 109 1
23 LBN 026.83+03.54 HII 19 27.5 -03 47           ~ 19 0
24 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 468 2
25 NAME Cepheus Flare MoC 23 34 +72.0           ~ 128 0
26 NAME Gould Belt PoG ~ ~           ~ 874 1

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