2005A&A...434..987A


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.08CEST11:40:24

2005A&A...434..987A - Astronomy and Astrophysics, volume 434, 987-1003 (2005/5-2)

Infrared portrait of the nearby massive star-forming region IRAS 09002-4732.

APAI D., LINZ H., HENNING T. and STECKLUM B.

Abstract (from CDS):

We present high-resolution near-infrared and mid-infrared imaging, mid-infrared spectroscopy and millimetre-wavelength continuum observations of the nearby massive star-forming complex IRAS 09002-4732. A rich cluster of young stars displaying near-infrared excess emission is detected. We identify the ionising source of the ultracompact H II region G268.42-0.85 and show that this star is the dominant heating and illuminating source of the region. Spectral type estimates based on different methods are consistent with a star of spectral type O9. The combination of the new observations with literature data allows us to set up the first structural model for the region. We argue that the ultracompact H II region is embedded in the rear side of the southern CS clump. Additionally, we detect several interesting objects. Among these objects are a network of dark dust filaments, an elongated, externally heated object with strong infrared excess inside the H II region and objects seen as silhouettes in the foreground of the large southern reflection nebulosity. The filamentary structures may play an important role in the star formation process.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: pre-main sequence - ISM: HII regions - ISM: individual objects: IRAS 09002-4732 - ISM: individual objects: G268.42-0.85 - infrared: ISM

VizieR on-line data: <Available at CDS (J/A+A/434/987): table5.dat>

Nomenclature: Fig.5, Table 2: [ALH2005] GNN (Nos G1-G15), [ALH2005] SN (Nos S1-S5), [ALH2005] ISN (Nos IS1 , IS2). Fig.12, Table 3: [ALH2005] A (Nos A-I). Table 5: [ALH2005] NNN (Nos 1-268).

Status at CDS:   could be processed

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1200 0
2 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1946 1
3 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1450 1
4 M 42 HII 05 35 17.3 -05 23 28           ~ 3695 0
5 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A1V+DA 1384 0
6 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 133 0
7 NAME Vela C Cld 08 57 -43.2           ~ 122 0
8 BRAN 222 ISM 09 01 51.6 -47 44 20           ~ 6 0
9 GAL 268.4-00.9 HII 09 01 54.3 -47 43 59           ~ 46 1
10 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 405 0
11 EGGR 70 WD* 10 33 42.7629684770 -11 41 38.339441758 11.851 12.847 13.012 13.138 13.278 DA1.9 104 0
12 * tet Cen PM* 14 06 40.94752 -36 22 11.8371 3.94 3.04 2.05 1.29 0.76 K0-IIIb 236 0
13 HD 129858 * 14 46 28.9933866510 -47 26 28.019036207 5.89 5.81 5.74     A1V 49 0
14 GSPC S875-C * 17 27 22.2592823859 -00 19 23.477732303           ~ 11 0
15 M 8 HII 18 03 37 -24 23.2           ~ 551 1
16 M 16 OpC 18 18 48 -13 48.4   6.58 6.0     ~ 930 2

    Equat.    Gal    SGal    Ecl

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2020.04.08-11:40:24

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