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uvby-{beta} photometry of A and F southern stars
Photometric color excesses and distances plus heliocentric coordinates are calculated for 3762 southern A and early-F stars. The present results, combined with those previously... -
4 A-type stars abundances and spectra
We present chemical composition and fundamental parameters (the effective temperature, surface gravity and radius) for four sharp-lined A-type stars gamma Gem (HD 41705),... -
Stellar parameters study with SED fit algo
Accurately measuring stellar parameters is a key goal to increase our understanding of the observable Universe. However, current methods are limited by many factors, in... -
Catalogue of outflows in E+A galaxies
E+A galaxies are believed to be a short phase connecting major merger ultraluminous infrared galaxies (ULIRGs) with red and dead elliptical galaxies. Their optical spectrum... -
SI abundances of 8 A-B stars
A comprehensive model atom was developed for Si I-II-III using the most up-to-date atomic data available so far. Based on non-local thermodynamic equilibrium (NLTE) line... -
Rotation and spots in normal A and Am/Fm stars
Frequency analysis of long-term ultraprecise photometry can lead to precise values of rotation frequencies of rotating stars with 'hump and spike' features in their... -
{delta} Scuti and {gamma} Doradus stars in TESS
We present the first asteroseismic results for {delta} Scuti and {gamma} Doradus stars observed in Sectors 1 and 2 of the TESS mission. We utilize the 2-min cadence TESS data... -
Rotational frequencies in A and B stars
It has long been thought that starspots are not present in the A and B stars because magnetic fields cannot be generated in stars with radiative envelopes. Space observations... -
Rotationally variable A stars from TESS
Recently, high-precision optical 2-min cadence light curves obtained with TESS for targets located in the mission's defined first four sectors have been released. The majority... -
Properties of Galactic Be Supergiants. VI.
We report the results of long-term spectroscopic monitoring of the A-type supergiant with the B[e] phenomenon 3Pup=HD62623. We confirm earlier findings that it is a binary... -
Early-type stars in Taurus-Auriga
We describe the results of a search for early-type stars associated with the Taurus-Auriga molecular cloud complex, a diffuse nearby star-forming region noted as lacking young... -
Young intermediate-mass stars in W5
We present the results of a survey of young intermediate-mass stars (age<5Myr, 1.5M_{sun}<M*<=15M{sun}) in the W5 massive star-forming region. We use combined optical,... -
Line identifications for {alpha} Sex
The analysis of the available Transiting Exoplanet Survey Satellite (TESS) light curves of {alpha}Sex (HD87887) reveals low-frequency pulsations with a period of about 9.1hr in... -
Spectroscopic study of Ba and CEMP-s stars
We have performed detailed high-resolution spectroscopic analysis on seven metal-poor stars (BD+75348, BD+093019, HD238020, HE0319-0215, HE0507-1653, HE0930-0018, HE1023-1504)... -
Chemical abundances in open cluster Stock 2
The recently rediscovered open cluster Stock2, located roughly 375pc away and about 400Myr old, has the potential to be an exciting new testbed for our understanding of stellar... -
The Scorpion Planet Survey; A-stars IR spectroscopy
The first directly imaged exoplanets indicated that wide-orbit giant planets could be more common around A-type stars. However, the relatively small number of nearby A-stars has... -
Near-IR spectrum of HIP 109427 with SCExAO/CHARIS
We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO)... -
HST/STIS near-UV spectrum of {eta} Telescopii
We present far- and near-ultraviolet absorption spectroscopy of the ~23Myr edge-on debris disk surrounding the A0V star {eta}Telescopii, obtained with the Hubble Space Telescope... -
X-ray properties of A,B-types, T-Tauri stars & YSOs
We use X-ray and infrared observations to study the properties of three classes of young stars in the Carina Nebula: intermediate-mass (2-5M{sun}) pre-main-sequence stars (IMPS;... -
10 years radial-velocity monitoring of Vega with TRES
We present an analysis of 1524 spectra of Vega spanning 10yr, in which we search for periodic radial-velocity variations. A signal with a periodicity of 0.676day and a...
