A detailed imaging analysis of the globular cluster (GC) system of the Sombrero galaxy (NGC 4594) has been accomplished using a six-image mosaic from the Hubble Space Telescope Advanced Camera for Surveys. The quality of the data is such that contamination by foreground stars and background galaxies is negligible for all but the faintest 5% of the
This section contains the publications database that collects IAC articles published in scientific journals. Please, click on the arrow to see full search filter and sort options: author, journal, year, etc..
It also provides access to IAC Preprints Repository here: https://research.iac.es/preprints/
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Hubble Space Telescope ACS Wide-Field Photometry of the Sombrero Galaxy Globular Cluster SystemSpitler, Lee R. et al.102006
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Hunting for binary central stars of planetary nebulae: exploiting archival data
The detection of new binary central stars of planetary nebulae is crucial to definitively determine the importance of binary interactions in the nebular morphology. In this context, we are working on a project that aims to increase the low number of binary central stars detected so far. For that, we are first analyzing public archival data in order
Aller, A. et al.Advertised on:
102017 -
Image Search Visualization in a Planetary VO
A multi-mission image search tool has been created through a collaboration between Google and NASA Ames Research Center, using Google Earth as a virtual observatory (VO) for accessing search results. Follow-on work will expand the utilization of the VO and refine the features based on user research.
Trimble, J. et al.Advertised on:
102011 -
Imaging the cool stars in the interacting binaries AE Aqr, BV Cen and V426 Oph
It is well known that magnetic activity in late-type stars increases with increasing rotation rate. Using inversion techniques akin to medical imaging, the rotationally broadened profiles from such stars can be used to reconstruct `Doppler images' of the distribution of cool, dark starspots on their stellar surfaces. Interacting binaries, however
Watson, C. A. et al.Advertised on:
102007 -
Imaging the elusive H-poor gas in planetary nebulae with large abundance discrepancy factors
The discrepancy between abundances computed using optical recombination lines (ORLs) and collisionally excited lines (CELs) is a major, unresolved problem with significant implications for the determination of chemical abundances throughout the Universe. In planetary nebulae (PNe), the most common explanation for the discrepancy is that two
García-Rojas, J. et al.Advertised on:
102017 -
Implications of Burst Oscillations from the Slowly Rotating Accreting Pulsar IGR J17480-2446 in the Globular Cluster Terzan 5
The recently discovered accreting X-ray pulsar IGR J17480-2446 spins at a frequency of ~11 Hz. We show that Type I X-ray bursts from this source display oscillations at the same frequency as the stellar spin. IGR J17480-2446 is the first secure case of a slowly rotating neutron star (NS) which shows Type I burst oscillations (BOs), all other
Cavecchi, Y. et al.Advertised on:
102011