629 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Goddard Space Flight CenterUS56 papers
- University of PennsylvaniaUS48 papers
- Princeton UniversityUS46 papers
- Pontificia Universidad Católica de ChileCL38 papers
- University of California, BerkeleyUS38 papers
- University of KwaZulu-NatalZA37 papers
- University of PittsburghUS37 papers
- University of TorontoCA37 papers
- Rutgers, The State University of New JerseyUS36 papers
- University of British ColumbiaCA36 papers
- Canadian Institute for Theoretical AstrophysicsCA35 papers
- National Institute of Standards and TechnologyUS35 papers
15 papers · 1 filter
The Lagoon Nebula and its Vicinity
N. F. H. Tothill, Marc Gagné, B. Stecklum +1
The Lagoon Nebula is an HII region in the Sagittarius Arm, about 1.3 kpc away, associated with the young (1-3 Myr) open cluster NGC 6530, which contains several O stars and several…
High-Resolution Chandra X-ray Imaging and Spectroscopy of the Sigma Orionis Cluster
S. L. Skinner, K. R. Sokal, D. H. Cohen +3
We present results of a 90 ksec Chandra X-ray observation of the young sigma Orionis cluster (age ~3 Myr) obtained with the High Energy Transmission Grating Spectrometer. We use th…
V723 Cassiopeia still on in X-rays: A bright Super Soft Source 12 years after outburst
J. U-. Ness, G. Schwarz, S. Starrfield +5
We find that the classical nova V723 Cas (1995) is still an active X-ray source more than 12 years after outburst and analyze seven X-ray observations carried out with Swift betwee…
The Neon Abundance in the Ejecta of QU Vul From Late-Epoch IR Spectra
Robert D. Gehrz, Charles E. Woodward, L. Andrew Helton +10
We present ground-based SpectroCam-10 mid-infrared, MMT optical, and Spitzer Space Telescope IRS mid-infrared spectra taken 7.62, 18.75, and 19.38 years respectively after the outb…
The Early Spectrophotometric Evolution of V1186 Scorpii (Nova Scorpii 2004 #1)
G. J. Schwarz, C. E. Woodward, M. F. Bode +19
We report optical photometry and optical through mid-infrared spectroscopy of the classical nova V1186 Sco. This slowly developing nova had an complex light curve with multiple sec…
Swift X-ray Observations of Classical Novae
J. -U. Ness, G. J. Schwarz, A. Retter +5
The new gamma-ray burst mission Swift has obtained pointed observations of several classical novae in outburst. We analyzed all the observations of classical novae from the Swift a…
Chandra Observations of the Eagle Nebula. I. Embedded Young Stellar Objects near the Pillars of Creation
Jeffrey L. Linsky, Marc Gagne, Anna Mytyk +2
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…
Swift observations of the 2006 outburst of the recurrent nova RS Ophiuchi: I. Early X-ray emission from the shocked ejecta and red giant wind
M. F. Bode, T. J. O'Brien, J. P. Osborne +16
RS Ophiuchi began its latest outburst on 2006 February 12. Previous outbursts have indicated that high velocity ejecta interact with a pre-existing red giant wind, setting up shock…
Chandra HETGS Multi-Phase Spectroscopy of the Young Magnetic O Star theta^1 Orionis C
Marc Gagne, Mary E. Oksala, David H. Cohen +5
We report on four Chandra grating observations of the oblique magnetic rotator theta^1 Ori C (O5.5 V) covering a wide range of viewing angles with respect to the star's 1060 G dipo…
Evidence for Companion-Induced Secular Changes in the Turbulent Disk of a Be Star in the LMC MACHO Database
Mitchell F. Struble, Anthony Galatola, Lorenzo Faccioli +2
The light curve of a blue variable in the MACHO LMC database (FTS ID 78.5979.72) appeared nearly unvarying for ~4 years (quasi-flat segment) but then rapidly changed to become peri…
Simultaneous Chandra and VLA Observations of Young Stars and Protostars in rho Ophiuchus Cloud Core A
Marc Gagne, Stephen L. Skinner, Kathryne J. Daniel
A 96-ks Chandra X-ray observation of rho Ophiuchus cloud core A detected 87 sources, of which 60 were identified with counterparts at other wavelengths. The X-ray detections includ…
A Deep Chandra X-ray Observation of the Embedded Young Cluster in NGC 2024
S. Skinner, M. Gagne, E. Belzer
We present results of a sensitive 76 ksec Chandra observation of the young stellar cluster in NGC 2024 (d = 415 pc) in the Orion B giant molecular cloud. Previous infrared observat…
Chandra Observations of the Pleiades Open Cluster: X-ray Emission from Late-B to Early-F Type Binaries
Kathryne J. Daniel, Jeffrey L. Linsky, Marc Gagne
We present the analysis of a 38.4 ks and a 23.6 ks observation of the core of the Pleiades open cluster. The Advanced CCD Imaging Spectrometer on board the Chandra X-ray Observator…
Mass Loss and Magnetospheres: X-rays from Hot Stars and Young Stellar Objects
Marc Gagne, David Cohen, Stanley Owocki +1
High-resolution X-ray spectra of high-mass stars and low-mass T-Tauri stars obtained during the first year of the Chandra mission are providing important clues about the mechanisms…
Observations of the core of the Pleiades with the Chandra X-ray Observatory
Anita Krishnamurthi, Christopher S. Reynolds, Jeffrey L. Linsky +2
We present results from a 36-ksec observation of the core of the Pleiades open cluster using ACIS-I on the Chandra X-ray Observatory. We have detected 57 sources, most of which do…