2011A&A...529L...7F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST23:16:31

2011A&A...529L...7F - Astronomy and Astrophysics, volume 529, L7-7 (2011/5-1)

Deuteration as an evolutionary tracer in massive-star formation.

FONTANI F., PALAU A., CASELLI P., SANCHEZ-MONGE A., BUTLER M.J., TAN J.C., JIMENEZ-SERRA I., BUSQUET G., LEURINI S. and AUDARD M.

Abstract (from CDS):

Theory predicts, and observations confirm, that the column density ratio of a molecule containing D to its counterpart containing H can be used as an evolutionary tracer in the low-mass star formation process. Since it remains unclear if the high-mass star formation process is a scaled-up version of the low-mass one, we investigated whether the relation between deuteration and evolution can be applied to the high-mass regime. With the IRAM-30m telescope, we observed rotational transitions of N2D+ and N2H+ and derived the deuterated fraction in 27 cores within massive star-forming regions understood to represent different evolutionary stages of the massive-star formation process. The abundance of N2D+ is higher at the pre-stellar/cluster stage, then drops during the formation of the protostellar object(s) as in the low-mass regime, remaining relatively constant during the ultra-compact HII region phase. The objects with the highest fractional abundance of N2D+ are starless cores with properties very similar to typical pre-stellar cores of lower mass. The abundance of N2D+ is lower in objects with higher gas temperatures as in the low-mass case but does not seem to depend on gas turbulence. Our results indicate that the N2D+-to-N2H+ column density ratio can be used as an evolutionary indicator in both low- and high-mass star formation, and that the physical conditions influencing the abundance of deuterated species likely evolve similarly during the processes that lead to the formation of both low- and high-mass stars.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: clouds - ISM: molecules - radio lines: ISM

Nomenclature: Table A.1: [FPC2011] I22134-A (Nos B, G), [FPC2011] I22134-VLA1 N=1.

Errata: + corrigendum vol. 562, p. C1 (2014)

Simbad objects: 37

goto Full paper

goto View the reference in ADS

Number of rows : 37

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 [PSB2010] MM2 mm 00 14 26.3 +64 28 27           ~ 11 0
2 [PSB2010] MM1 mm 00 14 27.0 +64 28 45           ~ 10 1
3 IRAS 04579+4703 Y*O 05 01 39.661 +47 07 21.92           ~ 42 0
4 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 680 0
5 NAME [BM89] L1544 cor 05 04 22.5 +25 11 36           ~ 434 1
6 [BEZ2011] J053048.01+334754.1 cor 05 30 48.0 +33 47 54           ~ 9 0
7 [PFG2013] A5142-MM2 mm 05 30 48.024 +33 47 53.67           ~ 13 0
8 [ZHB2007] CM-1B mm 05 30 48.025 +33 47 54.41           ~ 2 0
9 [BEZ2011] EC cor 05 30 48.7 +33 47 53           ~ 10 0
10 NGC 1985 RNe 05 37 47.8 +31 59 24           ~ 130 2
11 [BSG2002] mm3 mm 05 39 12.49 +35 45 55.2           ~ 13 0
12 [BSG2002] mm1 mm 05 39 13.08 +35 45 50.5           ~ 9 0
13 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
14 GPSR5 5.885-0.392 Rad 18 00 30.44 -24 04 00.6           ~ 2 0
15 GRS G012.89 +00.49 HII 18 11 51.3 -17 31 29           ~ 144 0
16 [BT2009] C1 mm 18 42 46.7 -04 04 08           ~ 37 0
17 [RJS2006] MSXDC G034.43+00.24 MM8 mm 18 53 16.4 +01 26 20           ~ 30 0
18 [RJS2006] MSXDC G034.43+00.24 MM7 mm 18 53 18.3 +01 27 13           ~ 29 0
19 IRAS 18517+0437 SFR 18 54 13.8 +04 41 32           ~ 56 0
20 [BT2009] G2 mm 18 56 50.3 +01 23 16           ~ 22 0
21 NAME I19035-VLA1 HII 19 06 01.5 +06 46 35           ~ 9 1
22 [LM99] L694-2 cor 19 41 04.6 +10 57 02           ~ 59 0
23 MSX6C G059.7831+00.0648 Y*O 19 43 11.21664 +23 44 03.9696           ~ 130 0
24 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 140 0
25 [KCW94] 069.540-00.975 HII 20 10 09.0 +31 31 35           ~ 166 1
26 IRAS 20081+3122 Y*O 20 10 09.036 +31 31 34.14           ~ 170 0
27 Onsala 1 Mas 20 10 09.2036 +31 31 36.090           ~ 178 0
28 [HC96] G75.78-0.34 1 Mas 20 21 44.0 +37 26 38           ~ 8 1
29 [PEG2007] WCloud Cld 20 31 10.71 +40 03 30.3           ~ 10 0
30 [BSG2004] IRAS 20293+3952 mm 1 mm 20 31 12.88 +40 03 22.8           ~ 11 0
31 IRAS 21307+5049 Y*O 21 32 30.59280 +51 02 16.0368           ~ 37 0
32 [FPC2011] I22134-B cor 22 15 05.8 +58 48 59           ~ 7 0
33 [FPC2011] I22134-VLA1 cor 22 15 09.2 +58 49 08           ~ 8 0
34 [FPC2011] I22134-G cor 22 15 10.5 +58 48 59           ~ 7 0
35 IRAS 23033+5951 Y*O 23 05 25.16112 +60 08 15.4428           ~ 78 0
36 IRAS 23118+6110 Y*O 23 14 01.63 +61 27 20.2           ~ 341 0
37 Mol 160 Rad 23 40 54.5 +61 10 28           ~ 88 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2011A&A...529L...7F and select 'bookmark this link' or equivalent in the popup menu


2020.07.03-23:16:31

© Université de Strasbourg/CNRS

    • Contact