2008A&A...477L..45F

Query : 2008A&A...477L..45F

2008A&A...477L..45F - Astronomy and Astrophysics, volume 477, L45-48 (2008/1-3)

Highly deuterated pre-stellar cores in a high-mass star formation region.

FONTANI F., CASELLI P., BOURKE T.L., CESARONI R. and BRAND J.

Abstract (from CDS):

We have observed the deuterated gas in the high-mass star formation region IRAS 05345+3157 at high-angular resolution, in order to determine the morphology and the nature of this gas. We have mapped the N₂H⁺ (1-0) line with the Plateau de Bure Interferometer, and the N₂D⁺ (3-2) and N₂H⁺ (3-2) lines with the Submillimeter Array. We have detected two condensations in N₂D⁺, with masses of ∼2-3 and ∼9M_☉ and diameters of 0.05 and 0.09pc, respectively. The high deuterium fractionation (∼0.1) and the line parameters of the N₂D⁺ condensations indicate that they are probably low- to intermediate-mass pre-stellar cores, even though other scenarios are possible.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - radio lines: ISM - ISM: individual: IRAS 05345+3157 - ISM: molecules

Nomenclature: Figs 1, 2: [FCB2008] W (Nos N, S), [FCB2008] CN (Nos C1-C4).

Simbad objects: 14

Full paper

View the references in ADS

Number of rows : 14

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	3C 111	Sy1	04 18 21.2772425736	+38 01 35.801359968	19.75	18.05		~	930	1
2	QSO B0507+179	QSO	05 10 02.36912937	+18 00 41.5815635	20.0	19.0	19.09	~	406	1
3	QSO J0530+13	Bla	05 30 56.41674741	+13 31 55.1494688		20.00	19.35	~	941	1
4	NGC 1985	RNe	05 37 47.8	+31 59 24				~	134	2
5	[FCB2008] C4	cor	05 37 52.5	+31 59 45				~	4	0
6	[LLK2011] Core 4	cor	05 37 52.5	+32 00 04				~	5	0
7	[FCB2008] C2	cor	05 37 53.0	+31 59 59				~	5	0
8	[LLK2011] Core 1	cor	05 37 53.03	+31 59 34.9				~	4	0
9	[FCB2008] S	cor	05 37 53.2	+31 59 50				~	3	0
10	[FCB2008] N	cor	05 37 53.3	+32 00 14				~	3	0
11	7C 055201.39+394824.00	QSO	05 55 30.80561419	+39 48 49.1649683		18.30	17.5	~	498	2
12	3C 279	Bla	12 56 11.16657958	-05 47 21.5251510	18.01	17.75	15.87	~	2982	2
13	3C 345	QSO	16 42 58.80997043	+39 48 36.9939552	16.81	16.59	16.84	~	1681	2
14	EM* MWC 349	**	20 32 45.499080	+40 39 36.74124	15.88	13.15	12.13	Bep	779	0

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