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Article
Using GALEX-SDSS-PanSTARRS-HST-Gaia to understand post-AGB evolution
Hot WDs in binary systems with a less evolved star are particularly invaluable astrophysical probes, the unevolved companion enabling better derivation of distance and age than is usually possible for post-AGB...
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Article
Open AccessUltraviolet imaging of planetary nebulae with \(\mathit{GALEX}\)
Over four hundred Galactic Planetary Nebulae (PNe) have been imaged by GALEX ...
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Article
Open AccessNew UV-source catalogs, UV spectral database, UV variables and science tools from the GALEX surveys
We present a new, expanded and improved catalog of Ultraviolet (UV) sources from the GALEX All-Sky Imaging survey: GUVcat_AIS (Bianchi et al. in Astrophys. J. Suppl. Ser. 230:24, 2017). The catalog includes 83 mi...
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Chapter
Extragalactic Astronomy: From Pioneers to Big Science
At the beginning of the nineteenth century one of the scientific issues driving the research of astronomers, like the Herschels, was to test if all the nebulæ can be resolved into stars. ...
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Chapter
The Impact of Surveys
Since the most ancient times astronomers felt the need to collect and list in atlases and catalogs all the visible objects in the sky. The first stellar catalog known in the western world being the one of Hipp.....
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Chapter
The New Boundaries of the Galaxy Concept
“…Bertoldo demonstrated that even when he was tearing out marble to get rid of what he did not want he must work with rhythmical strokes so that he achieved circular lines around the block. He was never to com...
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Chapter
New Eyes for Galaxies Investigation
The observational data for the extragalactic research are evolved across this century. While the first studies on galaxies were essentially based on images and spectra taken in the optical waveband...
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Chapter and Conference Paper
The Panchromatic Hubble Andromeda Treasury. Progression of Large-Scale Star Formation Across Space and Time in M 31
We investigate the clustering of early-type stars younger than 300 Myr on galactic scales in M 31. Based on the stellar photometric catalogs of the Panchromatic Hubble Andromeda Treasury program that also prov...
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Article
The Galaxy Evolution Explorer (GALEX). Its legacy of UV surveys, and science highlights
The Galaxy Evolution Explorer (GALEX) imaged the sky in the Ultraviolet (UV) for almost a decade, delivering the first sky surveys at these wavelengths. Its database contains far-UV (FUV, λ eff∼15...
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Article
GALEX and star formation
Wide-field far-UV (FUV, 1344–1786 Å) and near-UV (NUV, 1771–2831 Å) imaging from GALEX provides a deep, comprehensive view of the young stellar populations in hundreds of nearby galaxies, shedding new light on th...
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Article
The Ultraviolet sky surveys: filling the gap in our view of the Universe
The GALEX mission is performing imaging and spectroscopic surveys of the sky at Ultraviolet wavelengths, and providing unprecedented sky maps in two UV bands, far-UV and near-UV, and catalogs of UV sources. I ...
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Article
Massive star formation within the Leo ‘primordial’ ring
A massive ring of neutral hydrogen (H i) was detected during radio observations in the 1980s, orbiting the M105 and NGC 3384 galaxies in the constellation Leo. Called the Leo ring, it remains a mysterious structu...
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Chapter and Conference Paper
The Impact of Encounters on the Members of Local Group Analogs. A View from GALEX
The bright galaxy population of the Local Group Analog (LGA) LGG 225 has been imaged with the Galaxy Evolution Explorer (GALEX) through its Far- and Near-UV wavebands. A significant fraction of the group members ...
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Article
Suppression of star formation in early-type galaxies by feedback from supermassive black holes
Observations in the near-ultraviolet from the the GALEX satellite provide new data on the link between the formation of young stars in massive elliptical galaxies and the supermassive black holes thought to re...
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Article
The Need for Ultraviolet to Understand the Chemical Evolution of the Universe and Cosmology.
We identify an important set of key areas where an advanced observational Ultraviolet capability would have major impact on studies of cosmology and Galaxy formation in the young Universe. Most of these are as...
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Chapter
The Need for Ultraviolet to Understand the Chemical Evolution of the Universe, and Cosmology
We identify an important set of key areas where an advanced observational Ultraviolet capability would have major impact on studies of cosmology and Galaxy formation in the young Universe. Most of these are as...
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Chapter and Conference Paper
The Galaxy Evolution Explorer (GALEX)
The Galaxy Evolution Explorer (GALEX) is a Space Ultraviolet Imaging and Spectroscopic Survey Small Explorer mission that will map the star formation history of the universe over 0 < z < 2, a key to our understan...
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Chapter
Stellar Winds of Massive Stars in M31
We have obtained the first UV high resolution spectra of hot luminous stars in M31 with the FOS on Hubble Space Telescope. The spectra, combined with optical spectroscopic and photometric observations, enable us ...
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Article
Stellar winds of massive stars in M31
We have obtained the first UV high resolution spectra of hot luminous stars in M31 with the FOS onHubble Space Telescope. The spectra, combined with optical spectroscopic and photometric observations, enable us t...
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Chapter and Conference Paper
The winds of hot stars in M31 and M33
Optical ground based (MMT, KFHT, KPNO) and UV IUE observations of bright blue stars in M31 and M33 have been collected over the past years. The spectral types, Teff and bolometric luminosities are derived from UV...
