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Deep Near-Infrared Survey of the Pipe Nebula II: Data, Methods, and Dust Extinction Maps
Carlos Gerardo Román-Zúñiga, João F. Alves, Charles J. Lada +1
We present a new set of high resolution dust extinction maps of the nearby and essentially starless Pipe Nebula molecular cloud. The maps were constructed from a concerted deep nea…
On the Star Formation Rates in Molecular Clouds
Charles J. Lada, Marco Lombardi, João F. Alves
In this paper we investigate the level of star formation activity within nearby molecular clouds. We employ a uniform set of infrared extinction maps to provide accurate assessment…
Larson's third law and the universality of molecular cloud structure
Marco Lombardi, Joao Alves, Charles J. Lada
Larson (1981) first noted a scaling relation between masses and sizes in molecular clouds that implies that these objects have approximately constant column densities. This origina…
The Age, Stellar Content and Star Formation Timescale of the B59 Dense Core
Kevin R. Covey, Charles J. Lada, Carlos Roman-Zuniga +3
We have used moderate resolution, near-infrared spectra from the SpeX spectrograph on the NASA Infrared Telescope facility to characterize the stellar content of Barnard 59 (B59),…
Nothing to hide: An X-ray survey for young stellar objects in the Pipe Nebula
Jan Forbrich, Bettina Posselt, Kevin R. Covey +1
We have previously analyzed sensitive mid-infrared observations to establish that the Pipe Nebula has a very low star-formation efficiency. That study focused on YSOs with excess i…
Disentangling protostellar evolutionary stages in clustered environments using Spitzer-IRS spectra and comprehensive SED modeling
Jan Forbrich, Achim Tappe, Thomas Robitaille +5
When studying the evolutionary stages of protostars that form in clusters, the role of any intracluster medium cannot be neglected. High foreground extinction can lead to situation…