Ice and Dust in the Prestellar Dark Cloud Lynds 183: Preplanetary Matter at the Lowest Temperatures

  title={Ice and Dust in the Prestellar Dark Cloud Lynds 183: Preplanetary Matter at the Lowest Temperatures},
  author={Douglas C. B. Whittet and Charles A. Poteet and J. E. Chiar and Laurent Pagani and Varun Bajaj and David J. Horne and Sachindev S. Shenoy and Andrew J. Adamson},
  journal={The Astrophysical Journal},
Dust grains are nucleation centers and catalysts for the growth of icy mantles in quiescent interstellar clouds, the products of which may accumulate into preplanetary matter when new stars and solar systems form within the clouds. In this paper, we present the first spectroscopic detections of silicate dust and the molecular ices H2O, CO, and CO2 in the vicinity of the prestellar core L183 (L134N). An infrared photometric survey of the cloud was used to identify reddened background stars, and… Expand
The first frost in the Pipe Nebula
Spectroscopic studies of ices in nearby star-forming regions indicate that ice mantles form on dust grains in two distinct steps, starting with polar ice formation (H2O rich) and switching to apolarExpand
Observations of the Icy Universe
Freeze-out of the gas-phase elements onto cold grains in dense interstellar and circumstellar media builds up ice mantles consisting of molecules that are mostly formed in situ (H2O, NH3, CO2, CO,Expand
We investigate the composition of interstellar grains along the line of sight toward ? Ophiuchi, a well-studied environment near the diffuse-dense cloud transition. A spectral decomposition analysisExpand
Dust emission and scattering in dense interstellar clouds
Abstract Dust has a crucial role in the physics of interstellar medium (ISM) and it is one of the main tracers used in studies of dense clouds. Its importance has been accentuated by the largeExpand
Water ice deposition and growth in molecular clouds
In interstellar clouds the deposition of water ice onto grains only occurs at visual extinctions above some threshold value A_th. At extinctions greater than A_th there is a (near-linear) correlationExpand
Galactic cold cores - V. Dust opacity
Context. The project Galactic Cold Cores has carried out Herschel photometric observations of interstellar clouds where the Planck satellite survey has located cold and compact clumps. The sourcesExpand
The efficiency of photodissociation for molecules in interstellar ices
Processing by interstellar photons affects the composition of the icy mantles on interstellar grains. The rate of photodissociation in solids differs from that of molecules in the gas phase. The aimExpand
Water in star-forming regions: physics and chemistry from clouds to disks as probed by Herschel spectroscopy
(abridged) Data and results from the WISH key program are summarized, designed to provide a legacy data set to address its physics and chemistry. WISH targeted ~80 sources along the two axes ofExpand
Dust evolution, a global view: III. Core/mantle grains, organic nano-globules, comets and surface chemistry
  • A. Jones
  • Medicine
  • Royal Society Open Science
  • 2016
The chemistry of cosmic dust is much more intimately related with that of the interstellar gas than has previously been considered and the current models for interstellar gas and dust chemistry will most likely need to be fundamentally modified to include these new grain surface processes. Expand
A common column density threshold for scattering at 3.6 μm and water-ice in molecular clouds
Context. Observations of scattered light in the 1 5 m range have revealed dust grains in molecular cores with sizes larger than commonly inferred for the di use interstellar medium. It is currentlyExpand


Observational Constraints on Methanol Production in Interstellar and Preplanetary Ices
Methanol (CH3OH) is thought to be an important link in the chain of chemical evolution that leads from simple diatomic interstellar molecules to complex organic species in protoplanetary disks thatExpand
Ice and Dust in the Quiescent Medium of Isolated Dense Cores
The relation between ices in the envelopes and disks surrounding young stellar objects (YSOs) and those in the quiescent interstellar medium (ISM) is investigated. For a sample of 31 stars behindExpand
Data from the Five College Radio Astronomy Observatory CO Mapping Survey of the Taurus molecular cloud are combined with extinction data for a sample of 292 background field stars to investigate theExpand
Ices in the Quiescent IC?5146 Dense Cloud
This paper presents spectra in the 2 to 20 μm range of quiescent cloud material located in the IC 5146 cloud complex. The spectra were obtained with NASA's Infrared Telescope Facility SpeX instrumentExpand
The Nature of Carbon Dioxide Bearing Ices in Quiescent Molecular Clouds
The properties of the ices that form in dense molecular clouds represent an important set of initial conditions in the evolution of interstellar and preplanetary matter in regions of active starExpand
Far-infrared and molecular line observations of Lynds 183 - Studies of cold gas and dust
We have mapped the dark cloud L183 in the far-infrared at 100 m and 200 m with the ISOPHOT photometer aboard the ISO satellite. The observations make it possible for the rst time to study theExpand
Detection of Abundant CO2 Ice in the Quiescent Dark Cloud Medium toward Elias 16
We report the first detection of solid carbon dioxide (CO2) in quiescent regions of a dark cloud in the solar neighborhood, a result that has important implications for models of ice formation andExpand
Interstellar Extinction and Polarization in the Taurus Dark Clouds: The Optical Properties of Dust near the Diffuse/Dense Cloud Interface
Observations of interstellar linear polarization in the spectral range 0.35-2.2??m are presented for several stars reddened by dust in the Taurus region. Combined with a previously published study byExpand
The Ubiquity of Micrometer-Sized Dust Grains in the Dense Interstellar Medium
The widespread detection of the core shine effect is reported as a direct sign of the existence of grown, micrometer-sized dust grains, implying that the coreshine effect can be used to constrain fundamental core properties such as the three-dimensional density structure and ages and also the grain characteristics themselves. Expand
The c2d Spitzer spectroscopic survey of ices around low-mass young stellar objects II: CO2
This paper presents Spitzer-IRS spectroscopy of the CO2 15.2 micron bending mode toward a sample of 50 embedded low-mass stars in nearby star-forming clouds, taken mostly from the ``Cores to DisksExpand