Search: WFRF:(Garcia Burillo S.) >
Gas phase Elemental...
Gas phase Elemental abundances in Molecular cloudS (GEMS) I. The prototypical dark cloud TMC 1
-
- Fuente, A. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Navarro, D. G. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Caselli, P. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
-
show more...
-
- Gerin, M. (author)
- Observatoire de Paris,Paris Observatory
-
- Kramer, C. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
-
- Roueff, E. (author)
- PSL University Paris
-
- Alonso-Albi, T. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Bachiller, R. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Cazaux, S. (author)
- Universiteit Leiden (UL),Leiden University (UL),Technische Universiteit Delft,Delft University of Technology (TU Delft)
-
- Commercon, B. (author)
- Université de Lyon
-
- Friesen, R. (author)
- National Radio Astronomy Observatory
-
- Garcia-Burillo, S. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Giuliano, B. M. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
-
- Goicoechea, J. R. (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
-
- Gratier, P. (author)
- Université de Bordeaux,University of Bordeaux
-
- Hacar, A. (author)
- Universiteit Leiden (UL),Leiden University (UL)
-
Jimenez-Serra, I (author)
-
- Kirk, J. (author)
- The University of Warwick
-
- Lattanzi, V (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
-
- Loison, J. C. (author)
- Université de Bordeaux,University of Bordeaux
-
- Malinen, J. (author)
- Helsingin Yliopisto,University of Helsinki,Universität zu Köln,University of Cologne
-
- Marcelino, N. (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
-
- Martin-Domenech, R. (author)
- Harvard-Smithsonian Center for Astrophysics
-
Munoz-Caro, G. (author)
-
- Pineda, J. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
-
- Tafalla, M. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Tercero, B. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Ward-Thompson, D. (author)
- University of Central Lancashire
-
- Treviño Morales, Sandra, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Riviere-Marichalar, P. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
-
- Roncero, O. (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
-
- Vidal, T. (author)
- Université de Bordeaux,University of Bordeaux
-
- Ballester, M. Y. (author)
- Universidade Federal de Juiz de Fora,Federal University of Juiz de Fora
-
show less...
-
Observatorio Astronómico Nacional (OAN) Max Planck Gesellschaft zur Förderung der Wissenschaften eV. (MPG) (creator_code:org_t)
- 2019-04-19
- 2019
- English.
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 624
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://www.aanda.or...
-
https://doi.org/10.1...
-
https://research.cha...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- GEMS is an IRAM 30 m Large Program whose aim is determining the elemental depletions and the ionization fraction in a set of prototypical star-forming regions. This paper presents the first results from the prototypical dark cloud Taurus molecular cloud (TMC) 1. Extensive millimeter observations have been carried out with the IRAM 30 m telescope (3 and 2mm) and the 40 m Yebes telescope (1.3 cm and 7 mm) to determine the fractional abundances of CO, HCO+, HCN, CS, SO, HCS+, and N2H+ in three cuts which intersect the dense filament at the well-known positions TMC 1-CP, TMC 1-NH3, and TMC 1-C, covering a visual extinction range from A(v) similar to 3 to similar to 20 mag. Two phases with differentiated chemistry can be distinguished: (i) the translucent envelope with molecular hydrogen densities of 1-5 x 10(3) cm(-3); and (ii) the dense phase, located at A(v) > 10 mag, with molecular hydrogen densities >10(4) cm(-3). Observations and modeling show that the gas phase abundances of C and O progressively decrease along the C+/C/CO transition zone (A(v) similar to 3 mag) where C/H similar to 8 x 10(-5) and C/O similar to 0.8-1, until the beginning of the dense phase at A(v) similar to 10 mag. This is consistent with the grain temperatures being below the CO evaporation temperature in this region. In the case of sulfur, a strong depletion should occur before the translucent phase where we estimate an S/H similar to (0.4-2.2) x 10(-6), an abundance similar to 7-40 times lower than the solar value. A second strong depletion must be present during the formation of the thick icy mantles to achieve the values of S/H measured in the dense cold cores (S/H similar to 8 x 10(-8)). Based on our chemical modeling, we constrain the value of zeta(H2) to similar to(0.5-1.8) x 10(-16) s(-1) in the translucent cloud.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Keyword
- ISM: abundances
- ISM: kinematics and dynamics
- stars: formation
- ISM: molecules
- astrochemistry
- stars: low-mass
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Fuente, A.
-
Navarro, D. G.
-
Caselli, P.
-
Gerin, M.
-
Kramer, C.
-
Roueff, E.
-
show more...
-
Alonso-Albi, T.
-
Bachiller, R.
-
Cazaux, S.
-
Commercon, B.
-
Friesen, R.
-
Garcia-Burillo, ...
-
Giuliano, B. M.
-
Goicoechea, J. R ...
-
Gratier, P.
-
Hacar, A.
-
Jimenez-Serra, I
-
Kirk, J.
-
Lattanzi, V
-
Loison, J. C.
-
Malinen, J.
-
Marcelino, N.
-
Martin-Domenech, ...
-
Munoz-Caro, G.
-
Pineda, J.
-
Tafalla, M.
-
Tercero, B.
-
Ward-Thompson, D ...
-
Treviño Morales, ...
-
Riviere-Marichal ...
-
Roncero, O.
-
Vidal, T.
-
Ballester, M. Y.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Meteorology and ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Geochemistry
- Articles in the publication
-
Astronomy and As ...
- By the university
-
Chalmers University of Technology