Detection of Triply Deuterated Ammonia in the Barnard 1 Cloud

By D. Lis, È. Roueff, M. Gerin, T. Phillips, L. Coudert, F. V. D. Tak, Peter Schilke. 2002

146 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/00a22cc21f9a43f1aea258dc9814de6f1641759b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. E. Herbst
2. P. Caselli
3. Cecilia Ceccarelli
4. E. Bergin
5. E. Dishoeck
6. M. Tafalla
7. H. Roberts
8. R. Garrod

In Spectroscopy

1. Cecilia Ceccarelli
2. P. Caselli
3. E. Herbst
4. E. Bergin
5. E. Dishoeck
6. J. Jørgensen
7. M. Tafalla
8. A. Tielens

Citations in the corpus

• CO Depletion and Deuterium Fractionation in Prestellar Cores (2003, background): “On the one hand, large quantities of gaseous atomic oxygen have been observed in several cold, CO depleted, molecular clouds (Caux et al. 1999; Vastel et al. 2000; Lis et al. 2002b).”
• Cold Dark Clouds: The Initial Conditions for Star Formation (2007, background): “Pure gas-phase models without freeze-out cannot produce significant quantities of doubly (NHD2; Roueff et al. 2000) and triply deuterated ammonia (ND3; Lis et al. 2002) as observed in starless cores.”
• Enhanced Deuterium Fractionation in Dense Interstellar Cores Resulting from Multiply Deuterated H3+ (2003, background): “…16293 E (Roueff et al. 2000; Loinard et al. 2001), ND3/NH3 is ∼10 3 in the Class 0 protostar NGC 1333 IRAS4A and the cold dense Barnard 1 cloud (Lis et al. 2002; van der Tak et al. 2002), while D2CO/ H2CO is between 0.01 and 0.4 in a range of low-mass protostars and prestellar cores (Loinard…”
• Molecular inventories and chemical evolution of low-mass protostellar envelopes (2003, background): “…& Millar (2000a) and Roberts et al. (2003) show that a high degree of depletion may be required in order to produce formation of the doubly and triply deuterated species observed in protostellar environments (Ceccarelli et al. 1998; Lis et al. 2002; Parise et al. 2002; van der Tak et al. 2002).”
• The chemistry of multiply deuterated species in cold, dense interstellar cores (2004, background): “…to data are 0.33 (in HH211; Hatchell 2003), 0.03 (in 16293 E; Loinard et al. 2001) and 0.001 (in NGC 1333 and Barnard 1; van der Tak et al. 2002; Lis et al. 2002), respectively, which are remarkable, given the low underlying abundance of deuterium, but for NHD2 and ND3 our predicted ratios in…”
• First detection of triply-deuterated methanol (2003, background): “…formaldehyde, doubly deuterated hydrogen sulfide and multiply deuterated ammonia have been observed in other protostars and dark clouds from where protostars form (Roueff et al. 2000, Loinard et al. 2001, Ceccarelli et al. 2002, van der Tak et al. 2002, Lis et al. 2002, Vastel et al. 2003).”
• Chemical modeling of L183 (= L134N) : an estimate of the ortho/para H2 ratio (2008, background): “However this may not be exceptional when compared to the detection of triply deuterated species, like ND3 (Lis et al. 2002, van der Tak et al. 2002) and CD3OH (Parise et al. 2004) or to the fact that most reported fractionations are line-of-sight averages and are not derived from detailed profiles.”
• Molecular Evolution in Collapsing Prestellar Cores. III. Contraction of a Bonnor-Ebert Sphere (2004, background): “…multi-deuterated species have been detected in prestellar and protostellar cores, and their relative abundances to normal isotopomers, known as D/H ratios, found to be very high (10−3 − 10−1) (van der Tak et al. 2002; Lis et al. 2002; Parise et al. 2002; Bacmann et al. 2003; Parise et al. 2004).”