2009A&A...504..415S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.21CEST03:12:55

2009A&A...504..415S - Astronomy and Astrophysics, volume 504, 415-427 (2009/9-3)

ATLASGAL - the APEX telescope large area survey of the galaxy at 870 µm.

SCHULLER F., MENTEN K.M., CONTRERAS Y., WYROWSKI F., SCHILKE P., BRONFMAN L., HENNING T., WALMSLEY C.M., BEUTHER H., BONTEMPS S., CESARONI R., DEHARVENG L., GARAY G., HERPIN F., LEFLOCH B., LINZ H., MARDONES D., MINIER V., MOLINARI S., MOTTE F., NYMAN L.-A., REVERET V., RISACHER C., RUSSEIL D., SCHNEIDER N., TESTI L., TROOST T., VASYUNINA T., WIENEN M., ZAVAGNO A., KOVACS A., KREYSA E., SIRINGO G. and WEISS A.

Abstract (from CDS):

Thanks to its excellent 5100 m high site in Chajnantor, the Atacama Pathfinder Experiment (APEX) systematically explores the southern sky at submillimeter wavelengths, in both continuum and spectral line emission. Studying continuum emission from interstellar dust is essential to locating the highest density regions in the interstellar medium, and deriving their masses, column densities, density structures, and large-scale morphologies. In particular, the early stages of (massive) star formation remain poorly understood, mainly because only small samples of high-mass proto-stellar or young stellar objects have been studied in detail so far. Our goal is to produce a large-scale, systematic database of massive pre- and proto-stellar clumps in the Galaxy, to understand how and under what conditions star formation takes place. Only a systematic survey of the Galactic Plane can provide the statistical basis for unbiased studies. A well characterized sample of Galactic star-forming sites will deliver an evolutionary sequence and a mass function of high-mass, star-forming clumps. This systematic survey at submillimeter wavelengths also represents a preparatory work for Herschel and ALMA. The APEX telescope is ideally located to observe the inner Milky Way. The Large APEX Bolometer Camera (LABOCA) is a 295-element bolometer array observing at 870µm, with a beam size of 19.2". Taking advantage of its large field of view (11.4') and excellent sensitivity, we started an unbiased survey of the entire Galactic Plane accessible to APEX, with a typical noise level of 50-70mJy/beam: the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL). As a first step, we covered ∼95deg2 of the Galactic Plane. These data reveal ∼6000 compact sources brighter than 0.25Jy, or 63 sources per square degree, as well as extended structures, many of them filamentary. About two thirds of the compact sources have no bright infrared counterpart, and some of them are likely to correspond to the precursors of (high-mass) proto-stars or proto-clusters. Other compact sources harbor hot cores, compact HII regions, or young embedded clusters, thus tracing more evolved stages after massive stars have formed. Assuming a typical distance of 5kpc, most sources are clumps smaller than 1 pc with masses from a few 10 to a few 100M. In this first introductory paper, we show preliminary results from these ongoing observations, and discuss the mid- and long-term perspectives of the survey.

Abstract Copyright:

Journal keyword(s): surveys - submillimeter - ISM: structure - dust, extinction - stars: formation - Galaxy: disk

Nomenclature: Table 1: [SMC2009] GLL.ll+B.bb N=24.

Simbad objects: 46

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Number of rows : 46

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 942 3
2 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1007 0
3 NAME Per Region reg 03 37 00.0 +31 15 00           ~ 221 0
4 NAME Orion Core ? 05 35 14.5 -05 22 30           ~ 171 0
5 V* VY CMa s*r 07 22 58.32877 -25 46 03.2355 12.01 10.19 7.95     M5Iae 984 0
6 NAME Cha Dark Cloud SFR 11 55 -78.0           ~ 527 1
7 GAL 327.30-00.60 HII 15 53 05.0 -54 35 24           ~ 119 0
8 NAME Nor Arm PoG 16 00 -50.0           ~ 315 0
9 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2929 0
10 SH 2-3 HII 17 12.4 -38 28           ~ 150 1
11 BFS 65 HII 17 20 05.8 -38 57 37           ~ 72 0
12 NGC 6334 HII 17 20 51 -36 06.9           ~ 558 0
13 NGC 6357 HII 17 26.5 -34 12           ~ 244 0
14 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11004 0
15 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 493 1
16 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1851 1
17 [WWS2012] G018.76+00.26 cor 18 24 13.7074 -12 27 37.092           ~ 9 0
18 [SMC2009] G18.55+0.04 smm 18 24 37.85 -12 45 14.8           ~ 1 0
19 [WWS2012] G018.66+00.04 cor 18 24 52.0043 -12 39 12.630           ~ 10 0
20 [SMC2009] G18.70+0.00 smm 18 25 02.38 -12 38 12.6           ~ 1 0
21 NAME IRDC 18223-3 cor 18 25 08.4002 -12 45 15.466           ~ 58 0
22 SSTGLMC G018.6274-00.0705 cor 18 25 10.0328 -12 44 14.805           ~ 21 0
23 IRAS 18223-1243 Y*O 18 25 10.92912 -12 42 15.5196           ~ 54 1
24 [SMC2009] G18.93-0.01 smm 18 25 32.35 -12 26 41.4           ~ 2 0
25 [SMC2009] G18.99-0.04 smm 18 25 44.8406 -12 24 02.160           ~ 6 0
26 [WWS2012] G019.01-00.03 cor 18 25 44.9594 -12 22 41.685           ~ 12 1
27 [SMC2009] G18.98-0.07 smm 18 25 51.06 -12 25 42.5           ~ 1 0
28 [SMC2009] G19.47+0.17 smm 18 25 54.50 -11 52 34.4           ~ 2 0
29 [SMC2009] G18.98-0.09 smm 18 25 55.22 -12 25 50.3           ~ 2 0
30 [CCE98b] 019.30+0.07 Cld 18 25 56.78 -12 04 25.0           ~ 12 0
31 [SMC2009] G18.79-0.29 smm 18 26 15.53 -12 41 36.2           ~ 1 0
32 [SMC2009] G18.83-0.30 smm 18 26 23.70 -12 39 38.9           ~ 1 0
33 [ERG2015] 3345 cor 18 26 48.8415 -12 26 17.959           ~ 10 0
34 [SMC2009] G18.83-0.47 smm 18 26 59.34 -12 44 46.5           ~ 1 0
35 [SMC2009] G18.83-0.49 smm 18 27 03.57 -12 45 06.5           ~ 1 0
36 [SMC2009] G18.86-0.48 smm 18 27 06.20 -12 43 09.3           ~ 1 0
37 MMB G018.888-00.475 cor 18 27 07.85 -12 41 35.9           ~ 12 0
38 [SMC2009] G18.88-0.49 smm 18 27 09.21 -12 42 35.1           ~ 1 0
39 [SMC2009] G18.88-0.51 smm 18 27 15.13 -12 42 54.6           ~ 1 0
40 [SMC2009] G18.89-0.64 smm 18 27 43.46 -12 45 48.5           ~ 1 0
41 [SMC2009] G18.91-0.63 smm 18 27 43.55 -12 44 51.0           ~ 1 0
42 SNR G030.8-00.0 SNR 18 47 32 -01 56.5           ~ 423 0
43 W 49 SFR 19 10 20 +09 07.7           ~ 502 1
44 W 51 SNR 19 23 50 +14 06.0           ~ 1119 1
45 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 586 1
46 NAME Galactic Molecular Ring PoG ~ ~           ~ 38 0

    Equat.    Gal    SGal    Ecl

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2019.10.21-03:12:55

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