We present an atlas of position-velocity (PV) diagrams of ionized gas in the inner regions of 23 disk galaxies. The gas kinematics have been obtained from ground-based long-slit spectra along the major axis. We discuss the variety of shapes of the emission lines in the PV diagrams that we find for the sample galaxies. To discuss the different
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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An Atlas of Position-Velocity Diagrams in the Inner Regions of Disk GalaxiesFunes, J. G. et al.122001
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An eclipsing double-line spectroscopic binary at the stellar/substellar boundary in the Upper Scorpius OB association
Aims: We aim at constraining evolutionary models at low mass and young ages by identifying interesting transiting system members of the nearest OB association to the Sun, Upper Scorpius (USco), which has been targeted by the Kepler mission. Methods: We produced light curves for M-dwarf members of the USco region that has been surveyed during the
Lodieu, N. et al.Advertised on:
122015 -
An elevation of 0.1 light-seconds for the optical jet base in an accreting Galactic black hole system
Relativistic plasma jets are observed in many systems that host accreting black holes. According to theory, coiled magnetic fields close to the black hole accelerate and collimate the plasma, leading to a jet being launched1-3. Isolating emission from this acceleration and collimation zone is key to measuring its size and understanding jet
Gandhi, P. et al.Advertised on:
122017 -
An Ellipsoidal Study of Centaurus-X-4
We present the first infrared ellipsoidal study of a low-mass X-ray binary system, and hence measure the mass of the neutron star. Photometry of Cen X-4 obtained during 1990-91 allows us to determine the quiescent light curve. By fitting this light curve with an ellipsoidal model we revise the ephemeris, obtain solutions in the mass ratio
Shahbaz, T. et al.Advertised on:
121993 -
An Empirical Criterion to Classify T Tauri Stars and Substellar Analogs Using Low-Resolution Optical Spectroscopy
We have compiled and studied photometric and spectroscopic data published in the literature of several star-forming regions and young open clusters (Orion, Taurus, IC 348, Sco-Cen complex, Chamaeleon I, TW Hydrae association, σ Orionis cluster, IC 2391, α Persei cluster, and the Pleiades). Our goal was to seek the definition of a simple empirical
Martín, E. L. et al.Advertised on:
122003 -
An extensive search for planetary nebulae in M33
The importance of the study of Planetary Nebulae (PNe) in our Galaxy and in external galaxies is outlined, with the aim of highlighting how the combined study of galactic and extragalactic PNe can bring a substantial contribution to our understanding of the late stages of stellar evolution and of related astrophysical topics. We then illustrate the
Perinotto, M. et al.Advertised on:
122000