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A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). XV. The Hα luminosity function of the Virgo cluster
Ferrarese, L.; Boquien, M.; Balogh, M. +17 more
We use a complete set of deep narrow-band imaging data for 384 galaxies gathered during the Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) to derive the first Hα luminosity function of the Virgo cluster within its virial radius. The data, which are sensitive to the emission of a single O-early B ionising star, allow us to cover …
The cosmic DANCe of Perseus. I. Membership, phase-space structure, mass, and energy distributions
Miret-Roig, N.; Bouy, H.; Sarro, L. M. +4 more
Context. Star-forming regions are excellent benchmarks for testing and validating theories of star formation and stellar evolution. The Perseus star-forming region, being one of the youngest (< 10 Myr), closest (280−320 pc), and most studied in the literature, is a fundamental benchmark.
Aims: We aim to study the membership, phase-space st…
Time-variable Jet Ejections from RW Aur A, RY Tau, and DG Tau
Ohyama, Youichi; Pyo, Tae-Soo; Liu, Chun-Fan +17 more
We present Gemini-NIFS, Very Large Telescope-SINFONI, and Keck-OSIRIS observations of near-IR [Fe II] emission that are associated with well-studied jets from three active T Tauri stars-RW Aur A, RY Tau, and DG Tau-taken from 2012 to 2021. We primarily cover the redshifted jet from RW Aur A and the blueshifted jets from RY Tau and DG Tau, in order…
Interstellar Polarization Survey. III. Relation between Optical Polarization and Reddening in the General Interstellar Medium
Magalhães, A. M.; Kawabata, Koji S.; Rodrigues, C. V. +4 more
Optical starlight can be partially polarized while propagating through the dusty, magnetized interstellar medium (ISM). The polarization efficiency describes the polarization intensity fraction per reddening unit, P V /E(B - V), related to the interstellar dust grains and magnetic field properties. The maximum value observed, [P …
The Radio Parallax of the Crab Pulsar: A First VLBI Measurement Calibrated with Giant Pulses
Deller, Adam T.; Kirsten, Franz; van Kerkwijk, Marten H. +2 more
We use four observations with the European very long baseline interferometry (VLBI) network to measure the first precise radio parallax of the Crab Pulsar. We found two in-beam extragalactic sources just outside the Crab Nebula, with one bright enough to use as a background reference source in our data. We use the Crab Pulsar's giant pulses to det…
Rapid Rotation of an Erupting Prominence and the Associated Coronal Mass Ejection on 13 May 2013
Zhang, Qingmin; Ji, Haisheng; Zhou, Yuhao
In this paper, we report the multiwavelength observations of an erupting prominence and the associated coronal mass ejection (CME) on 13 May 2013. The event occurs behind the western limb in the field of view of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) spacecraft. The prominence is supported by a highly …
Understanding the Deflection of the "Cartwheel CME": Data Analysis and Modeling
Vourlidas, Angelos; Balmaceda, Laura A.; Cécere, Mariana +1 more
We study the low corona evolution of the "Cartwheel" coronal mass ejection (CME; 2008 April 9) by reconstructing its three-dimensional path and modeling it with magnetohydrodynamic simulations. This event exhibited a double deflection that has been reported and analyzed in previous works but whose underlying cause remained unclear. The Cartwheel C…
Gaia Focused Product Release: Radial velocity time series of long-period variables
Prusti, T.; Mazeh, T.; Zucker, S. +403 more
Context. The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocity data planned with Data Release 4, this Focused Product Release (FPR) provides radial-velocity time series for a selection of LPV candidates with high-quality …
A New Sample of Transient Ultraluminous X-Ray Sources Serendipitously Discovered by Swift/XRT
Fürst, Felix; Middleton, Matthew J.; Walton, Dominic J. +11 more
Ultraluminous X-ray sources (ULXs) are our best laboratories for studying extreme super-Eddington accretion. Most studies of these objects are of relatively persistent sources; however, there is growing evidence to suggest a large fraction of these sources are transient. Here we present a sample of five newly reported transient ULXs in the galaxie…
CO multi-line imaging of nearby galaxies (COMING). XII. CO-to-H2 conversion factor and dust-to-gas ratio
Kobayashi, Masato I. N.; Kuno, Nario; Miyamoto, Yusuke +8 more
We simultaneously measured the spatially resolved CO-to-H2 conversion factor (αCO) and dust-to-gas ratio (DGR) in nearby galaxies on a kiloparsec scale. In this study, we used 12CO(J = 1-0) data obtained by the Nobeyama 45 m radio telescope with H I and dust mass surface densities. We obtained the values of global …