822 citations
- Space Telescope Science InstituteUS68 papers
- European Southern ObservatoryCL58 papers
- Centre National de la Recherche ScientifiqueFR57 papers
- Gemini North ObservatoryUS49 papers
- University of ArizonaUS48 papers
- Herzberg Institute of AstrophysicsCA43 papers
- California Institute of TechnologyUS42 papers
- University of California, BerkeleyUS42 papers
- Ames Research CenterUS40 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS37 papers
- Lawrence Livermore National LaboratoryUS37 papers
- Johns Hopkins UniversityUS35 papers
25 papers · 1 filter
Fading AGN Candidates: AGN Histories and Outflow Signatures
William C. Keel, Chris J. Lintott, W. Peter Maksym +12
We consider energy budgets and radiative history of 8 fading AGN, identified from mismatch between the ionizion of very extended (>10 kpc) ionized clouds and the luminosity of the…
Chandra Reveals Heavy Obscuration and Circumnuclear Star Formation in Seyfert 2 Galaxy NGC 4968
Stephanie M. LaMassa, Tahir Yaqoob, N. A. Levenson +6
We present the Chandra imaging and spectral analysis of NGC 4968, a nearby (z = 0.00986) Seyfert 2 galaxy. We discover extended (1 kpc) X-ray emission in the soft band (0.5 -…
Binary Central Stars of Planetary Nebulae Discovered Through Photometric Variability V: The Central Stars of HaTr 7 and ESO 330-9
Todd C. Hillwig, David J. Frew, Nicole Reindl +3
We find the central stars of the planetary nebulae (PNe) HaTr 7 and ESO 330-9 to be close binary systems. Both have orbital periods of less than half a day and contain an irradiate…
A Profile Analysis of Raman-scattered O VI Bands at 6825 Å and 7082 Å in Sanduleak's Star
Jeong-Eun Heo, Rodolfo Angeloni, Francesco Di Mille +2
We present a detailed modeling of the two broad bands observed at 6825 Å and 7082 Å in Sanduleak's star, a controversial object in the Large Magellanic Cloud. These bands are known…
The overlooked role of stellar variability in the extended main sequence of LMC intermediate-age clusters
Ricardo Salinas, Michael A. Pajkos, Jay Strader +2
Intermediate-age star clusters in the Large Magellanic Cloud show extended main sequence turn offs (MSTOs), which are not consistent with a canonical single stellar population. The…
A machine learned classifier for RR Lyrae in the VVV survey
Felipe Elorrieta, Susana Eyheramendy, Andrés Jordán +10
Variable stars of RR Lyrae type are a prime tool to obtain distances to old stellar populations in the Milky Way, and one of the main aims of the Vista Variables in the Via Lactea…