Search Publications
Missions
Journals
Publication Years
The first all-sky survey of star-forming galaxies with eROSITA: Scaling relations and a population of X-ray luminous starbursts
Haberl, F.; Ptak, A.; Zezas, A. +12 more
Context. In this work, we present the results from a study of X-ray normal galaxies, that is, galaxies not harbouring active galactic nuclei (AGN), using data from the first complete all-sky scan of the eROSITA X-ray survey (eRASS1) obtained with eROSITA on board the Spectrum-Roentgen-Gamma observatory. eRASS1 provides the first unbiased X-ray cen…
Uncovering the invisible: A study of Gaia18ajz, a candidate black hole revealed by microlensing
Mróz, P.; Gromadzki, M.; Rybicki, K. +30 more
Context. Identifying black holes is essential for our understanding of the development of stars and can reveal novel principles of physics. Gravitational microlensing provides an exceptional opportunity to examine an undetectable population of black holes in the Milky Way. In particular, long-lasting events are likely to be associated with massive…
Eppur si muove: Evidence of disc precession or a sub-milliparsec SMBH binary in the QPE-emitting galaxy GSN 069
Miniutti, G.; Giustini, M.; Arcodia, R. +8 more
X-ray quasi-periodic eruptions (QPEs) are intense soft X-ray bursts from the nuclei of nearby low-mass galaxies typically lasting about one hour and repeating every few hours. Their physical origin remains a matter of debate, although so-called impact models appear promising. These models posit a secondary orbiting body piercing through the accret…
Spectrophotometry and radial distribution of multiple stellar populations in globular clusters from Gaia XP spectra
Barbieri, M.; Milone, A. P.; Cordoni, G. +14 more
Understanding the formation of multiple populations in globular clusters (GCs) represents a challenge for stellar population studies. Nevertheless, the outermost cluster regions, likely to hold clues about the initial configuration of GC stars, remain underexplored. We use synthetic spectra reflecting the chemical compositions of first- and second…
Mixed Origins: Strong Natal Kicks for Some Black Holes and None for Others
El-Badry, Kareem; Nagarajan, Pranav
Using stellar kinematic data from Gaia DR3, we revisit constraints on black hole (BH) natal kicks from observed accreting and detached BH binaries. We compare the space velocities and Galactic orbits of a sample of 12 BHs in the Galactic disk with well-constrained distances to their local stellar populations, for which we obtain proper motions and…
GD-1 Stellar Stream and Cocoon in the DESI Early Data Release
Moustakas, J.; Brooks, D.; Doel, P. +51 more
We present ∼115 new spectroscopically identified members of the GD-1 tidal stream observed with the 5000-fiber Dark Energy Spectroscopic Instrument (DESI). We confirm the existence of a "cocoon," which is a broad (FWHM ∼ 2
The PANORAMIC Survey: Pure Parallel Wide Area Legacy Imaging with JWST/NIRCam
Maseda, Michael V.; Franx, Marijn; Labbé, Ivo +15 more
We present the PANORAMIC survey, a pure parallel extragalactic imaging program with JWST/NIRCam observed during Cycle 1. The survey obtained ∼530 square arcmin of NIRCam imaging from 1–5 µm, totaling ∼192 hr of science integration time. This represents the largest on-sky time investment of any Cycle 1 GO extragalactic NIRCam imaging program …
A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): Spectroscopically Complete Census of Obscured Cosmic Star Formation Rate Density at z = 4–6
Hennawi, Joseph F.; Shen, Yue; Fan, Xiaohui +25 more
We present a stringent measurement of the dust-obscured star formation rate density (SFRD) at z = 4–6 from the ASPIRE JWST Cycle-1 medium and ALMA Cycle-9 large program. We obtained JWST/NIRCam grism spectroscopy and ALMA 1.2 mm continuum map along 25 independent quasar sightlines, covering a total survey area of ∼35 arcmin2 where we se…
Detection of a Highly Ionized Outflow in the Quasiperiodically Erupting Source GSN 069
Pinto, C.; Miniutti, G.; Brenneman, L. +8 more
Quasiperiodic eruptions (QPEs) are high-amplitude, soft X-ray bursts recurring every few hours, associated with supermassive black holes. Many interpretations for QPEs were proposed since their recent discovery in 2019, including extreme mass ratio inspirals and accretion disk instabilities. But, as of today, their nature still remains debated. We…
Disentangling the Galaxy's Gordian knot: evidence from APOGEE-Gaia for a knotted and slower bar in the Milky Way
Peñarrubia, Jorge; Petersen, Michael S.; Horta Darrington, Danny
The inner