Chandra Observations of the Eagle Nebula. I. Embedded Young Stellar Objects near the Pillars of Creation

Abstract

We present and analyze the first high-resolution X-ray images ever obtained of the Eagle Nebula star-forming region. On 2001 July 30 the Chandra X-ray Observatory obtained a 78 ks image of the Eagle Nebula (M 16) that includes the core of the young galactic cluster NGC 6611 and the dark columns of dust and cold molecular gas in M 16 known as the Pillars of Creation. We find a total of 1101 X-ray sources in the 17'x17' ACIS-I field of view. Most of the X-ray sources are low mass pre-main-sequence or high-mass main-sequence stars in this young cluster. A handful of hard X-ray sources in the pillars are spatially coincident with deeply embedded young stellar objects seen in high-resolution near-infrared images recently obtained with the VLT (McCaughrean & Andersen 2002). In this paper, we focus on the 40 X-ray sources in and around Pillars 1-4 at the heart of the Eagle Nebula. None of the X-ray sources are associated with the evaporating gaseous globules (EGGs) first observed by Hester et al. (1996) in HST WFPC2 images of M 16, implying that either the EGGs do not contain protostars or that the protostars have not yet become X-ray active. Eight X-ray counts are coincident with the Herbig-Haro object HH216, implying log L_X~30.0.

35 pages, 7 color figures, accepted by ApJ

References in corpus (24)

• Embedded Clusters in Molecular Clouds
• Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
• Physical Conditions in Regions of Star Formation
• Chandra Orion Ultradeep Project: Observations and Source Lists
• X-ray emitting young stars in the Orion Nebula
• The evolution of X-ray emission in young stars
• Determination of the gas-to-dust ratio in nearby dense clouds using X-ray absorption measurements
• Global X-ray properties of the Orion Nebula region
• The VLT-FLAMES Survey of Massive Stars: Observations in the Galactic Clusters NGC 3293, NGC 4755 and NGC 6611
• Membership of the Orion Nebula Population from the Chandra Orion Ultradeep Project
• Chandra Discovers a Very High Density X-ray Plasma on the O-Star Zeta Orionis
• A Chandra/ACIS Study of 30 Doradus II. X-ray Point Sources in the Massive Star Cluster R136 and Beyond
• A Simple Scaling Analysis of X-ray Emission and Absorption in Hot-Star Winds
• The discovery of X-ray emission from the protostellar jet L1551 IRS5 (HH 154)
• Simultaneous Chandra and VLA Observations of Young Stars and Protostars in rho Ophiuchus Cloud Core A
• X-ray Modeling of Very Young Early Type Stars in the Orion Trapezium: Signatures of Magnetically Confined Plasmas and Evolutionary Implications
• X-ray emission from young brown dwarfs in the Orion Nebula Cluster
• The discovery of an expanding X-ray source in the HH 154 protostellar jet
• The Eagle's EGGs: fertile or sterile?
• Chandra X-ray observations of Young Clusters I. NGC2264 Data
• A Deep Chandra X-ray Observation of the Embedded Young Cluster in NGC 2024
• An X-ray census of young stars in the Chamaeleon I North cloud
• X-rays from HH 80, HH 81, and the Central Region
• Embedded Star Formation in the Eagle Nebula

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• The Pillars of Creation revisited with MUSE: gas kinematics and high-mass stellar feedback traced by optical spectroscopy
• The M16 molecular complex under the influence of NGC6611. Herschel's perspective of the heating effect on the Eagle Nebula
• Correlation between the spatial distribution of circumstellar disks and massive stars in the young open cluster NGC 6611. II: Cluster members selected with Spitzer/IRAC
• Pillars and globules at the edges of H ii regions, Confronting Herschel observations and numerical simulations
• Origins Space Telescope Mission Concept Study Report
• Chronology of star formation and disk evolution in the Eagle Nebula
• An X-ray Imaging Study of the Stellar Population in RCW49
• Tracing the Energetics and Evolution of Dust with Spitzer: a Chapter in the History of the Eagle Nebula
• Photometric determination of the mass accretion rates of pre-main sequence stars. III. Results in the Large Magellanic Cloud
• A Chandra Study of the Rosette Star-Forming Complex. III. The NGC 2237 Cluster and the Region's Star Formation History
• The VISTA Orion mini-survey: star formation in the Lynds 1630 North cloud
• Generation of radiative knots in a randomly pulsed protostellar jet II. X-ray emission
• Bird's eye view of molecular clouds in the Milky Way: I. Column density and star formation from sub-pc to kpc scales
• Star formation history of CMa R1: I. Wide-field X-ray study of the young stellar population
• An Infrared Census of Star Formation in the Horsehead Nebula
• Chandra/ACIS-I study of the X-ray properties of the NGC 6611 and M16 stellar population
• The low-mass pre-main-sequence population of Sco OB1
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• SOFIA FEEDBACK Survey: The Pillars of Creation in [C II] and Molecular Lines
• Young Stellar Populations in MYStIX Star Forming Regions: Candidate Protostars
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• X-ray emission from stellar jets by collision against high-density molecular clouds: an application to HH 248
• Wide field-of-view study of the Eagle Nebula with the Fourier transform imaging spectrograph SITELLE at CFHT
• Pre main sequence: Accretion & Outflows
• Evidence of triggered star formation in the Pillars of Creation from JWST observations
• The Sejong Open Cluster Survey (SOS). VII. A Photometric Study of the Young Open Cluster IC 1590