20 citations · 66 across the 15 of their papers we have counts for
16 papers
From Light to Sound: Spectroscopic Evolution & Sonification of the flaring Nova V612 Scuti
Pragati Acharya, Elias Aydi, Kirill V. Sokolovsky +17
We present photometric and spectroscopic observations of the 2017 Galactic nova V612 Sct, whose optical evolution was marked by multiple unusually large maxima. The eruption includ…
Symbiotic binaries in the Gaia data. II. Symbiotic candidates from general variability classification in DR3
Jaroslav Merc, Lionel Mulato, Joanna Mikołajewska +7
We investigate the reliability of the symbiotic star class in the general variability classification of Gaia DR3 and search for new genuine symbiotic systems among the objects assi…
Analysis of the Gaia DR3 planetary nebula candidates and the possible symbiotic stars among them
Lionel Mulato, Jaroslav Merc, Stéphane Charbonnel +3
The Gaia DR3, released in June 2022, included low-resolution BP/RP (XP) spectra that have been exploited for the classification of various types of emission-line objects using mach…
What determines the -ray luminosities of classical novae?
Peter Craig, Elias Aydi, Laura Chomiuk +25
Classical novae in the Milky Way have now been well-established as high-energy GeV -ray sources. In novae with main-sequence companions, this emission is believed to result from…
V4141 Sgr: Outflows and repeated outbursts
Jaroslav Merc, Joanna Mikołajewska, Thomas Petit +6
In this work, we analyze the ongoing brightening of the poorly studied symbiotic star V4141 Sgr and examine its long-term variability. We present new low-resolution spectroscopic o…
Spectral evolution of the narrow emission line components in optical during the 2022 nova eruption of U Scorpii
Katsuki Muraoka, Naoto Kojiguchi, Junpei Ito +20
There remains debate over whether the accretion disk survives or is entirely disrupted after the nova eruption. In our previous paper, Muraoka et al. (2024, PASJ, 76, 293) have pho…
Search for new Galactic Wolf-Rayet stars using Gaia DR3. I. Candidate selection and the follow-up of the bright sample
Lionel Mulato, Jaroslav Merc, Stéphane Charbonnel +3
Gaia DR3, released in June 2022, included low-resolution XP spectra that have been used for the classification of various types of emission-line objects through machine-learning te…
Revisiting the Classics: On the Optical Colours of Novae as Standard Crayons
Peter Craig, Elias Aydi, Laura Chomiuk +9
We present a systematic study of the colours of novae over the course of their eruptions. Where possible, interstellar reddening was measured using the equivalent widths of…
Gaia23ckh: Symbiotic outburst of the assumed Mira variable V390 Sco
Jaroslav Merc, Peter Velez, Stéphane Charbonnel +5
The poorly studied variable star V390 Sco, previously classified as a Mira pulsator, was detected in a brightening event by the ESA Gaia satellite in September 2023. This work pres…
A planetary collision afterglow and transit of the resultant debris cloud
Matthew Kenworthy, Simon Lock, Grant Kennedy +19
Planets grow in rotating disks of dust and gas around forming stars, some of which can subsequently collide in giant impacts after the gas component is removed from the disk. Monit…
Intensity Interferometry observations of the H envelope of Cas with MéO and a portable telescope
Nolan Matthews, Jean-Pierre Rivet, David Vernet +9
We report on observations of the extended environment of the bright Be star -Cas performed using intensity interferometry measurements within its H emission line. These obser…
WHTZ 1: A high excitation Planetary Nebula not a gaseous cocoon from runaway star HD 185806
Quentin A. Parker, Pascal Le Dû, Andreas Ritter +6
We present evidence that the nebular cocoon and bow-shock emission nebula putatively and recently reported as deriving from the 9th magnitude "runaway" star HD 185806 is the previo…
DeGaPe 35: Amateur discovery of a new southern symbiotic star
Thomas Petit, Jaroslav Merc, Rudolf Gális +6
In this work, we present the discovery and characterization of a new southern S-type symbiotic star, DeGaPe 35. We have obtained the low-resolution spectroscopic observations and s…
Combined spectroscopy and intensity interferometry to determine the distances of the blue supergiants P Cygni and Rigel
E. S. G. de Almeida, Mathilde Hugbart, Armando Domiciano de Souza +10
In this paper we report on spatial intensity interferometry measurements within the H line on two stars: the Luminous Blue Variable supergiant \PCygni\,and the late-type B super…
Outbursts and stellar properties of the classical Be star HD 6226
Noel D. Richardson, Olivier Thizy, Jon E. Bjorkman +58
The bright and understudied classical Be star HD 6226 has exhibited multiple outbursts in the last several years during which the star grew a viscous decretion disk. We analyze 659…
Four newly discovered HII galaxies
O. Garde, P. Le Dû, M. Koenig +3
We present the results of spectroscopy campaigns for planetary nebula candidates, where we have identified four objects as Seyfert galaxies. All observations have been carried out…