2001MNRAS.326..927P

Query : 2001MNRAS.326..927P

2001MNRAS.326..927P - Mon. Not. R. Astron. Soc., 326, 927-936 (2001/September-3)

Dense cores in the L1630 molecular cloud: discovering new protostars with SCUBA.

PHILLIPS R.R., GIBB A.G. and LITTLE L.T.

Abstract (from CDS):

Maps of the 450- and 850-µm dust continuum emission from three star-forming condensations within the Lynds 1630 molecular cloud, made with the SCUBA bolometer array, reveal the presence of four new submillimetre sources, each of a few solar masses (two of which are probably class I and two of which are class 0), as well as several sources the existence of which was previously known. The sources are located in filaments and appear elongated when observed at 450µm. They probably have dust temperatures in the range 10 to 20K, in good agreement with previous ammonia temperature estimates. Attempts to fit their structures with power-law and Gaussian density distributions suggest that the central distribution is flatter than expected for a simple singular isothermal sphere.

Although the statistics are poor, our results suggest that the ratio of `protostellar core' mass to total virial mass may be similar for both large and small condensations.


Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): stars: formation - ISM: clouds - ISM: individual: L1630 - ISM: individual: Orion B - radio continuum: ISM - submillimetre

Nomenclature: Table 1: [PGL2001] LBS NNA (Nos 17F, 17H, 18S).

CDS comments: LBS NN = LBS 2-NN.

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 555 0
2 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
3 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
4 LDN 1630 DNe 05 45.5 -00 59           ~ 392 0
5 2MASS J05460363-0014493 Y*O 05 46 03.63 -00 14 49.3           ~ 78 0
6 IRAS 05435-0015 Y*O 05 46 04.775 -00 14 16.51           ~ 79 0
7 HH 26A HH 05 46 05.0 -00 14 38           ~ 14 0
8 NAME HH 24-26 MoC 05 46 07.34 -00 13 31.3           ~ 36 0
9 HH 25A HH 05 46 07.4 -00 13 26           ~ 8 0
10 LBS 2-23 PoC 05 46 07.5 -00 10 24           ~ 14 0
11 NAME HH 25MMS Y*O 05 46 07.8 -00 13 41           ~ 59 0
12 2MASS J05460787-0010014 Y*O 05 46 07.873 -00 10 01.41           ~ 36 0
13 IRAS 05435-0011 Y*O 05 46 08.45544 -00 10 02.9568           ~ 91 0
14 HH 25C HH 05 46 08.5 -00 14 07           ~ 8 0
15 HH 25D HH 05 46 08.7 -00 14 33           ~ 9 0
16 HGBS J054608.3-001044 Y*O 05 46 08.8 -00 10 47           ~ 92 0
17 HH 26C HH 05 46 08.9 -00 14 27           ~ 15 0
18 HH 24 HH 05 46 09 -00 10.2           ~ 163 1
19 LBS 2-17 PoC 05 46 24.0 +00 00 05           ~ 15 0
20 HGBS J054627.9-000141 Y*? 05 46 28.1 -00 01 40           ~ 13 0
21 HGBS J054628.2+001927 Y*O 05 46 28.40 +00 19 27.1           ~ 23 1
22 2MASS J05463064-0002349 Y*O 05 46 30.645 -00 02 34.97           ~ 41 0
23 NAME HH 19-27 H2O Maser Mas 05 46 31.2 -00 02 35           ~ 7 0
24 LBS 2-13 PoC 05 46 38.2 +00 24 22           ~ 5 0
25 LBS 2-16 PoC 05 46 45.33 +00 02 40.0           ~ 6 0
26 LBS 2-7 PoC ~ ~           ~ 4 0
27 LBS 2-18 PoC ~ ~           ~ 6 0

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