Spitzer Observations of L429: A Near-collapse or Collapsing Starless Core

Abstract

We present Spitzer infrared observations of the starless core L429. The IR images of this core show an absorption feature, caused by the dense core material, at wavelengths <= 70 micron. The core has a steep density profile, and reaches A_V > 35 mag near the center. We show that L429 is either collapsing or in a near-collapse state.

5 pages, 3 figures, emulateapj format, accepted for publication in ApJL

References in corpus (8)

• Cold Dark Clouds: The Initial Conditions for Star Formation
• Identifying the Low Luminosity Population of Embedded Protostars in the c2d Observations of Clouds and Cores
• The Nature of the Dense Core Population in the Pipe Nebula: Thermal Cores Under Pressure
• Optical polarimetry toward the Pipe nebula: Revealing the importance of the magnetic field
• Spitzer Observations of Bok Globule B335: Isolated Star Formation Efficiency and Cloud Structure
• Probing Inward Motions in Starless Cores Using The HCN J = 1-0 Hyperfine Transitions : A Pointing Survey Toward Central Regions
• The initial conditions of isolated star formation - VII. Spitzer mapping of pre-stellar cores
• Spitzer observations of a 24 micron shadow: Bok Globule CB190

Cited by in corpus (4)

• Observations of the Onset of Complex Organic Molecule Formation in Interstellar Ices
• Astrochemical models of interstellar ices: History matters
• Constraining the Dust Opacity Law in Three Small and Isolated Molecular Clouds
• Constraints on the non-thermal desorption of methanol in the cold core LDN 429-C