263 citations · 1.1k across the 74 of their papers we have counts for
12 papers · 1 filter
The World Space Observatory (WSO-UV) - Current status
Michela Uslenghi, Isabella Pagano, Cristian Pontoni +2
This paper reports on the current status of the World Space Observatory WSO-UV, a space mission for UV astronomy, planned for launch at the beginning of next decade. It is based on…
The focal-plane instruments on board WSO-UV
I. Pagano, M. Sachkov, A. I. Gomez de Castro +6
Dedicated to spectroscopic and imaging observations of the ultraviolet sky, the World Space Observatory for Ultraviolet Project is a Russia led international collaboration presentl…
Stellar winds from massive stars - What are the REAL mass-loss rates?
J. Puls, N. Markova, S. Scuderi
We discuss recent evidence that currently accepted mass-loss rates may need to be revised downwards, as a consequence of previously neglected ``clumping'' of the wind. New results…
The superimposed photospheric and stellar wind variability of the O-type supergiant alpha Cam
R. K. Prinja, N. Markova, S. Scuderi +1
(Abridged) We provide empirical constraints on the different physical components that can act to yield temporal variability in predominantly or partially wind-formed optical lines…
Bright OB stars in the Galaxy - III. Constraints on the radial stratification of the clumping factor in hot star winds from a combined Halpha, IR and radio analysis
J. Puls, N. Markova, S. Scuderi +4
Recent results strongly challenge the canonical picture of massive star winds: various evidence indicates that currently accepted mass-loss rates, Mdot, may need to be revised down…
Low Mass Pre-Main Sequence stars in the Large Magellanic Cloud - II: HST-WFPC2 observations of two fields in the 30 Doradus region
Martino Romaniello, Salvatore Scuderi, Nino Panagia +2
As a part of an ongoing effort to characterise the young stellar populations in the Large Magellanic Cloud, we present HST-WFPC2 broad and narrow band imaging of two fields with re…
Bright OB stars in the Galaxy.II. Wind variability in O supergiants as traced by H-alpha
N. Markova, J. Puls, S. Scuderi +1
We investigate the line-profile variability (lpv) of H-alpha for a large sample of O-type supergiants. We used the Temporal Variance Spectrum (TVS) analysis, developed by Fullerton…
Ongoing massive star formation in the bulge of M51
H. J. G. L. M. Lamers, N. Panagia, S. Scuderi +4
We studied the HST-WFPC2 observations of the inner kpc of the interacting galaxy M51 in six bands from 2550 to 8140 Angstrom. The images show an oval shaped area ("bulge") of 11x16…
Accurate Stellar Population Studies from Multiband Photometric Observations
Martino Romaniello, Nino Panagia, Salvatore Scuderi +1
We present a new technique based on multi-band near ultraviolet and optical photometry to measure both the stellar intrinsic properties, ie luminosity and effective temperature, an…
TTauri Stars in the Large Magellanic Cloud: a combined HST and VLT effort
Martino Romaniello, Nino Panagia, Salvatore Scuderi +4
The combination of the unprecedented spatial resolution attainable with WFPC2 on board HST and of the large collecting area of the VLT makes it possible to study in detail the low…
Young Stellar Populations Around SN1987A
Nino Panagia, Martino Romaniello, Salvatore Scuderi +1
We present the results of a study of the stellar population in a region of 30 pc radius around SN1987A, based on an analysis of multi-band HST-WFPC2 images. The effective temperatu…
HST study of the Stellar Populations within 30 pc of SN 1987A
Martino Romaniello, Nino Panagia, Salvatore Scuderi
We have studied the stellar populations in a region of 30 pc around SN 1987A in the Large Magellanic Cloud using multi-band HST-WFPC2 images. The effective temperature, luminosity…