Astrophys. J., 681, 428-452 (2008/July-1)
The balloon-borne large aperture submillimeter telescope (BLAST) 2005: a 4 deg2 galactic plane survey in Vulpecula (l = 59°).
CHAPIN E.L., ADE P.A.R., BOCK J.J., BRUNT C., DEVLIN M.J., DICKER S., GRIFFIN M., GUNDERSEN J.O., HALPERN M., HARGRAVE P.C., HUGHES D.H., KLEIN J., MARSDEN G., MARTIN P.G., MAUSKOPF P., NETTERFIELD C.B., OLMI L., PASCALE E., PATANCHON G., REX M., SCOTT D., SEMISCH C., TRUCH M.D.P., TUCKER C., TUCKER G.S., VIERO M.P. and WIEBE D.V.
Abstract (from CDS):
We present the first results from a new 250, 350, and 500 µm Galactic plane survey taken with the Balloon-borne Large-Aperture Submillimeter Telescope (BLAST) in 2005. This survey's primary goal is to identify and characterize high-mass protostellar objects (HMPOs). The region studied here covers 4 deg2 near the open cluster NGC 6823 in the constellation Vulpecula (ℓ=59°). We find 60 compact sources (<60" diameter) detected simultaneously in all three bands. Their SEDs are constrained through BLAST, IRAS, Spitzer MIPS, and MSX photometry, with inferred dust temperatures spanning ∼12-40 K assuming a dust emissivity index β=1.5. The luminosity-to-mass ratio, a distance-independent quantity, spans ∼0.2-130 L☉M–1☉. Distances are estimated from coincident 13CO(1⟶0) velocities combined with a variety of other velocity and morphological data in the literature. In total, 49 sources are associated with a molecular cloud complex encompassing NGC 6823 (distance ∼2.3 kpc), 10 objects with the Perseus arm (∼8.5 kpc), and one object is probably in the outer Galaxy (∼14 kpc). Near NGC 6823, the inferred luminosities and masses of BLAST sources span ∼40-104 L☉ and ∼15-700 M☉, respectively. The mass spectrum is compatible with molecular gas masses in other high-mass star-forming regions. Several luminous sources appear to be ultracompact H II regions powered by early B stars. However, many of the objects are cool, massive gravitationally bound clumps with no obvious internal radiation from a protostar, and hence excellent HMPO candidates.
Balloons - ISM: Clouds - Stars: Formation - Submillimeter
VizieR on-line data:
<Available at CDS (J/ApJ/681/428): table2.dat table3.dat table4.dat table5.dat>
Table 2, col(1): [CAB2008] VNN (Nos V01-V60) = Table 2, col(2): BLAST JHHMMSS+DDMMSS N=60.
View the references in ADS
To bookmark this query, right click on this link: simbad:2008ApJ...681..428C and select 'bookmark this link' or equivalent in the popup menu