Search Publications
The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). VIII. Diffuse dust in the Virgo intra-cluster space
Andreani, P.; Bianchi, S.; Boselli, A. +5 more
Aims: We present the first detection of diffuse dust in the intra-cluster medium of the Virgo cluster out to ∼0.4 virial radii, and study the radial variation of its properties on a radial scale of the virial radius.
Methods: Analysing near-UV - i colours for a sample of ∼12 000 background galaxies with redshifts 0.02 < z < 0.8, we…
The Gaia-ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia-ESO. The K2 Galactic Caps Project
Gilmore, G.; Bayo, A.; Lardo, C. +33 more
Context. The extensive stellar spectroscopic datasets that are available for studies in Galactic Archeaology thanks to, for example, the Gaia-ESO Survey, now benefit from having a significant number of targets that overlap with asteroseismology projects such as Kepler, K2, and CoRoT. Combining the measurements from spectroscopy and asteroseismolog…
The giant outburst of 4U 0115+634 in 2011 with Suzaku and RXTE. Minimizing cyclotron line biases
Rothschild, Richard E.; Fürst, Felix; Grinberg, Victoria +19 more
We present an analysis of X-ray spectra of the high-mass X-ray binary 4U 0115+634 as observed with Suzaku and RXTE in 2011 July, during the fading phase of a giant X-ray outburst. We used a continuum model consisting of an absorbed cutoff power law and an ad hoc Gaussian emission feature centered around 8.5 keV, which we attribute to cyclotron emi…
KELT-17: a chemically peculiar Am star and a hot-Jupiter planet
González, J. F.; Jofré, E.; Jaque Arancibia, M. +6 more
Context. There is very little information to be found in the literature regarding the detection of planets orbiting chemically peculiar stars.
Aims: Our aim is to determine the detailed chemical composition of the remarkable planet host star KELT-17. This object hosts a hot-Jupiter planet with 1.31 MJup detected by transits, and it…
Neglected X-ray discovered polars. II. The peculiar eclipsing binary HY Eridani
Burwitz, V.; Beuermann, K.; Schwope, A. +2 more
We report on the X-ray observations of the eclipsing polar HY Eri (RX J0501-0359), along with its photometric, spectrophotometric, and spectropolarimetric optical variations, collected over 30 years. With an orbital period of 2.855 h,
APEX CO observations towards the photodissociation region of RCW 120
Zavagno, A.; Russeil, D.; Schuller, F. +3 more
Context. The edges of ionized (H II) regions are important sites for the formation of (high-mass) stars. Indeed, at least 30% of the Galactic high-mass-star formation is observed there. The radiative and compressive impact of the H II region could induce star formation at the border following different mechanisms such as the collect and collapse o…
A high redshift population of galaxies at the North Ecliptic Pole. Unveiling the main sequence of dusty galaxies
Valtchanov, I.; White, G. J.; Małek, K. +16 more
Context. Dusty high-z galaxies are extreme objects with high star formation rates (SFRs) and luminosities. Characterising the properties of this population and analysing their evolution over cosmic time is key to understanding galaxy evolution in the early Universe.
Aims: We select a sample of high-z dusty star-forming galaxies (DSFGs) and ev…
The molecular mass function of the local Universe
Andreani, P.; Boselli, A.; Vio, R. +4 more
Aims: We construct the molecular mass function using the bivariate K-band-mass function (BMF) of the Herschel Reference Survey (HRS), which is a volume-limited sample that has already been widely studied at the entire electromagnetic spectrum.
Methods: The molecular mass function was derived from the K-band and the gas mass cumulative di…
Doppler shift oscillations of a sunspot detected by CYRA and IRIS
Li, D.; Su, J. T.; Cao, W. +4 more
Context. The carbon monoxide (CO) molecular line at around 46655 Å in solar infrared spectra is often used to investigate the dynamic behavior of the cold heart of the solar atmosphere, i.e., sunspot oscillation, especially at the sunspot umbra.
Aims: We investigated sunspot oscillation at Doppler velocities of the CO 7-6 R67 and 3-2 R14 line…
NuSTAR observation of the supergiant fast X-ray transient IGR J11215-5952 during its 2017 outburst
Tiengo, A.; Sidoli, L.; Esposito, P. +4 more
We report on the results of a NuSTAR observation of the supergiant fast X-ray transient pulsar IGR J11215-5952 during the peak of its outburst in June 2017. IGR J11215-5952 is the only SFXT undergoing strictly periodic outbursts (every 165 days). NuSTAR caught several X-ray flares, spanning a dynamic range of 100, and detected X-ray pulsations at …