Work

ChandraX-Ray Observations of Young Clusters. II. Orion Flanking Fields Data

Year: 2004

Type: article

Abstract: We present results of Chandra observations of two flanking fields (FFs) in Orion, outside the Orion Nebula Cluster (ONC). The observations were taken with the ACIS-I camera with an exposure time of about 48 ks each field. We present a catalog of 417 sources, which includes X-ray luminosity, optical and infrared photometry, and X-ray variability information. We have found 91 variable sources, 33 of which have a flarelike light curve and 11 of which have a pattern of a steady increase or decrease over a 10 hr period. The optical and infrared photometry for the stars identified as X-ray sources are consistent with most of these objects being pre–main-sequence stars with ages younger than 10 Myr. We present evidence for an age difference among the X-ray–selected samples of NGC 2264, Orion FFs, and ONC, with NGC 2264 being the oldest and ONC being the youngest.

Source: The Astronomical Journal

DOI: 10.1086/422349

Authors: Solange V. Ramírez, Luisa Rebull, John Stauffer, Stephen Strom, Lynne Hillenbrand, Thomas Hearty, Eugene L. Kopan, Steven Pravdo, Russell Makidon, Burton Jones

Institutions: California Institute of Technology, Kitt Peak National Observatory, Jet Propulsion Laboratory, Infrared Processing and Analysis Center, Space Telescope Science Institute, University of California, Santa Cruz

Language: English

Topic: Astrophysics and Star Formation Studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Aeronautics and Space Administration, California Institute of Technology, Jet Propulsion Laboratory

OpenAlex ID: W2109633744

FWCI: 1.058

Cites: 65

Cited by: 28

Related to: 10