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Chandra obs. of the Trifid region & ARCoIRIS sp.
The dynamical states of molecular clouds may affect the properties of the stars they form. In the vicinity of the Trifid Nebula (d=1180+/-25pc), the main star cluster (Trifid... -
UV and optical LCs of the TDE AT2021ehb
We present X-ray, UV, optical, and radio observations of the nearby (~78Mpc) tidal disruption event AT2021ehb/ZTF21aanxhjv during its first 430 days of evolution. AT2021ehb... -
Tuc-Hor members with TESS LCs & Gaia data
The Tucana-Horologium association (Tuc-Hor) is a 40Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light... -
Multiwavelength follow-up obs. of GRB 221009A
GRB 221009A (z=0.151) is one of the closest known long {gamma}-ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented... -
AGN STORM 2. III. A NICER view of Mrk 817
The AGN STORM 2 Collaboration targeted the Seyfert 1 galaxy Mrk 817 for a year-long multiwavelength, coordinated reverberation mapping campaign including Hubble Space Telescope,... -
BASS. XXXV. Stellar vel. dispersion of type 1 AGNs
We present two independent measurements of stellar velocity dispersions ({sigma}) from the CaII H+K {lambda}3969,3934 and MgIb{lambda}5183,5172,5167 region (3880-5550{AA}) and... -
KX redshift survey
In this paper we present preliminary spectroscopic results from a small-area faint K-excess (KX) survey, and compare KX selection against UVX selection. The aim of the KX method... -
X-ray luminosities of early-type galaxies
We present a catalogue of X-ray luminosities for 401 early-type galaxies, of which 136 are based on newly analysed ROSAT PSPC pointed observations (Cat. ). The remaining... -
MAXI J1659-152 2010 outburst analysis
We present a comprehensive spectral-timing study of the black hole candidate MAXI J1659-152 during its 2010 outburst. We analysed 65 Rossi X-ray timing explorer (RXTE)... -
2XMM ultraluminous X-ray source candidates
Ultraluminous X-ray sources (ULXs) are some of the most enigmatic X-ray bright sources known to date. It is generally accepted that they cannot host black holes as large as... -
SPIRE (f250um>17.4mJy) GOODS-N galaxies
For the first time, we investigate the X-ray/infrared (IR) correlation for star-forming galaxies (SFGs) at z~1, using SPIRE submm data from the recently launched Herschel Space... -
Analysis of {gamma}-ray bursts
To find out the astrophysical processes responsible for gamma-ray burst (GRB), it is crucial to discover and understand the relations between their observational properties.... -
ECDFS sources with radio counterparts
In order to trace the instantaneous star formation rate (SFR) at high redshift, and thus help in understanding the relation between the different emission mechanisms related to... -
X-ray-age relation and exoplanet evaporation
We study the relationship between coronal X-ray emission and stellar age for late-type stars, and the variation of this relationship with spectral type. We select 717 stars from... -
Galactic Bulge Survey X-ray sources NIR ctp
We report on the near-infrared matches, drawn from three surveys, to the 1640 unique X-ray sources detected by Chandra in the Galactic Bulge Survey (GBS). This survey targets... -
Galaxy clusters at z=0.23 and 0.45 X-ray emission
The thermal, chemical, and kinematic properties of the potentially multiphase circum/intergalactic medium at the virial radii of galaxy clusters remain largely uncertain. We... -
X-ray luminosities of SDSS DR7 clusters from RASS
We use ROSAT All Sky Survey broad-band X-ray images and the optical clusters identified from Sloan Digital Sky Survey Data Release 7 to estimate the X-ray luminosities around... -
X-ray survey of the 2Jy sample. I.
We carry out a systematic study of the X-ray emission from the active nuclei of the 0.02<z<0.7 2Jy sample, using Chandra and XMM-Newton observations. We combine our... -
C-COSMOS & ChaMP X-ray-selected z>3 AGNs
We present results from an analysis of the largest high-redshift (z>3) X-ray-selected active galactic nucleus (AGN) sample to date, combining the Chandra Cosmological... -
X-ray bright AGN in massive galaxy clusters
We present the results of a new analysis of the X-ray selected active galactic nuclei (AGN) population residing in and behind 135 of the most massive galaxy clusters in the...
