Results 111 to 120 of about 239,171 (281)

New Silhouette Disks with Reflection Nebulae and Outflows in the Orion Nebula and M43

, 2004
We report the detection of several new circumstellar disks seen in silhouette in the outskirts of the Orion nebula and M43, detected as part of our Halpha survey of Orion with the HST/ACS.
Bally, John, Licht, Daniel, Smith, Nathan, Walawender, Josh   +3 more
core   +1 more source

PPAK Integral Field Spectroscopy survey of the Orion Nebula: Data Release [PDF]

, 2006
We present a low-resolution spectroscopic survey of the Orion nebula which data we release for public use. In this article, we intend to show the possible applications of this dataset analyzing some of the main properties of the nebula.
Baldwin, Baldwin, Benjamin, Benjamin, Bohlin, Breger, Canto, Cardelli, Clegg, Cota, D. Martín-Gordón, Esteban, Esteban, Ferland, Hester, Hummer, J. Alves, J. M. Vilchez, Kaler, Kelz, Kennicutt, Lee, M. A. W. Verheijen, Mathis, Meaburn, N. Cardiel, O'Dell, O'Dell, Osterbrock, Osterbrock, Osterbrock, Pagel, Pagel, Peimbert, Peimbert, Pettini, Pilyugin, Pilyugin, Pogge, Roth, Rubin, S. F. Sánchez, Smits, Stacey, Sánchez, Sánchez, Thronson, van der Werf, Verheijen, Vilchez, Vitrichenko, Wen, Yusef-Zedeh   +52 more
core   +8 more sources

Membership of the Orion Nebula Population from the Chandra Orion Ultradeep Project [PDF]

, 2005
The Chandra Orion Ultradeep project (COUP) observation described in a companion paper by Getman et al. provides an exceptionally deep X-ray survey of the Orion Nebula Cluster and associated embedded young stellar objects.
Duquennoy A., Eric D. Feigelson, Giusi Micela, Gordon Garmire, Hambarian V. V., Konstantin V. Getman, Leisa Townsley, Mark J. McCaughrean, Nicolas Grosso, Patrick Broos   +9 more
core   +4 more sources

Extreme Radio Flares and Associated X-Ray Variability from Young Stellar Objects in the Orion Nebula Cluster [PDF]

, 2017
Young stellar objects are known to exhibit strong radio variability on timescales of weeks to months, and a few reports have documented extreme radio flares with at least an order of magnitude change in flux density on timescales of hours to days ...
J. Forbrich, M. Reid, K. Menten, V. Rivilla, S. Wolk, U. Rau, C. Chandler   +6 more
semanticscholar   +1 more source

Constraining Free–Free Emission and Photoevaporative Mass-loss Rates for Known Proplyds and New VLA–identified Candidate Proplyds in NGC 1977

The Astrophysical Journal
We present NSF's Karl G. Jansky Very Large Array observations covering the NGC 1977 region at 3.0, 6.4, and 15.0 GHz. We search for compact radio sources and detect continuum emission from 34 NGC 1977 cluster members and 37 background objects.
Ryan D. Boyden, Josh A. Eisner
doaj   +1 more source

On the Formation of Runaway Stars BN and x in the Orion Nebula Cluster [PDF]

, 2017
We explore scenarios for the dynamical ejection of stars BN and x from source I in the Kleinmann-Low nebula of the Orion Nebula Cluster (ONC), which is important for being the closest region of massive star formation.
J. Farias, Jonathan C. Tan Dept. of Space, Earth, Environment, C. Astronomy, U. Virginia   +5 more
semanticscholar   +1 more source

HST Survey of the Orion Nebula Cluster in ACS/Visible and WFC3/IR Bands. IV. A Bayesian Multiwavelength Study of Stellar Parameters in the Orion Nebula Cluster

The Astrophysical Journal
We have performed a comprehensive study of the Orion Nebula Cluster (ONC) combining the photometric data obtained by the two Hubble Space Telescope Treasury programs that targeted this region.
Giovanni M. Strampelli, Massimo Robberto, Laurent Pueyo, Mario Gennaro, Carlo F. Manara, Elena Sabbi, Antonio Aparicio   +6 more
doaj   +1 more source

Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster

, 2012
The aim of this work is to characterize the stellar population between Earth and the Orion A molecular cloud where the well known star formation benchmark Orion Nebula Cluster (ONC) is embedded.
Alves, J., Bouy, H.
core   +1 more source

JWST/NIRSpec Observations of Brown Dwarfs in the Orion Nebula Cluster

The Astrophysical Journal
We have used the multiobject mode of the Near-Infrared Spectrograph (NIRSpec) on board the James Webb Space Telescope (JWST) to obtain low-resolution 1–5 μ m spectra of 22 brown dwarf candidates in the Orion Nebula Cluster, which were selected with ...
K. L. Luhman, C. Alves de Oliveira, I. Baraffe, G. Chabrier, E. Manjavacas, R. J. Parker, P. Tremblin   +6 more
doaj   +1 more source

Chandra Orion Ultradeep Project: Observations and Source Lists [PDF]

, 2004
We present a description of the data reduction methods and the derived catalog of more than 1600 X-ray point sources from the exceptionally deep January 2003 Chandra X-ray Observatory observation of the Orion Nebula Cluster and embedded populations ...
A. A. Muench, C. J. Lada, den Boggende A. J. F., E. D. Feigelson, E. Flaccomio, F. Damiani, F. R. Harnden, Jr., G. Meeus, G. Micela, G. P. Garmire, Geier S., J. Bally, J. Kastner, J. Li, K. V. Getman, L. A. Hillenbrand, L. Townsley, M. J. McCaughrean, M. Tsujimoto, N. Grosso, P. S. Broos, S. S. Murray, S. Sciortino, S. Wolk, Siess L., T. Preibisch, W. Herbst, Yamauchi S.   +27 more
core   +4 more sources