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OLIMPO: a Balloon-Borne SZE Imager to Probe ICM Dynamics and the WHIM Jack Sayers, Camille Avestruz, Ritoban Basu Thakur, Elia Stefano Battistelli, Esra Bulbul, Federico Caccioti, Fabio Columbro, Alessandro Coppolecchia, Scott Cray, Giuseppe D’Alessandro, Paolo de Bernardis, Marco de Petris, Shaul Hanany, Luca Lamagna, Erwin Lau, Silvia Masi, Allesandro Paiella, Giorgio Pettinari, Francesco Piacentini, Eitan Rapaport, Larry Rudnick, Irina Zhuravleva, John ZuHuone arXiv:2404.04414v1 Announce Type: new Abstract: OLIMPO is a proposed Antarctic balloon-borne Sunyaev-Zel’dovich effect (SZE) imager to study gas dynamics associated with structure formation along with the properties of the warm-hot intergalactic medium (WHIM) residing in the connective filaments. During a 25 day flightRead More →

Long-term variability in debris transiting white dwarfs Amornrat Aungwerojwit, Boris T. Gaensicke, Vikram S. Dhillon, Andrew Drake, Keith Inight, Thomas G. Kaye, T. R. Marsh, Ed Mullen, Ingrid Pelisoli, Andrew Swan arXiv:2404.04422v1 Announce Type: new Abstract: Combining archival photometric observations from multiple large-area surveys spanning the past 17 years, we detect long-term variability in the light curves of ZTFJ032833.52-121945.27 (ZTFJ0328-1219), ZTFJ092311.41+423634.16 (ZTFJ0923+4236) and WD1145+017, all known to exhibit transits from planetary debris. ZTFJ0328-1219 showed an overall fading in brightness from 2011 through to 2015, with a maximum dimming of ~0.3 mag, and still remains ~0.1 mag fainter compared to 2006. We complement the analysis ofRead More →

The Stellar Content of the Young Open Cluster Berkeley 50 (IC 1310) Meghan Speckert, Philip Massey, Brian A. Skiff arXiv:2404.04435v1 Announce Type: new Abstract: We observed the Galactic open cluster Berkeley 50 in order to determine its stellar content, distance, and age. We obtained UBV photometry of 1145 stars in a 12.3′ $times$ 12.3′ field, and used Gaia proper motions and parallaxes to identify 64 members, of which we obtained spectra of the 17 brightest members. The majority of the observed population we classified as B dwarfs, with the exception of a newly identified red supergiant star, which our spectroscopy shows has a B-type companion.Read More →

Constraining free-free emission and photoevaporative mass loss rates for known proplyds and new VLA-identified candidate proplyds in NGC 1977 Ryan D. Boyden, Josh A. Eisner arXiv:2404.04437v1 Announce Type: new Abstract: We present Karl G. Jansky Very Large Array observations covering the NGC 1977 region at 3.0, 6.4, and 15.0 GHz. We search for compact radio sources and detect continuum emission from 34 NGC 1977 cluster members and 37 background objects. Of the 34 radio-detected cluster members, 3 are associated with known proplyds in NGC 1977, 22 are associated with additional young stellar objects in NGC 1977, and 9 are newly-identified cluster members. We examine theRead More →

Automated Detection of Galactic Rings from SDSS Images Linn Abraham, Sheelu Abraham, Ajit K. Kembhavi, N. S. Philip, A. K. Aniyan, Sudhanshu Barway, Harish Kumar arXiv:2404.04484v1 Announce Type: new Abstract: Morphological features in galaxies, like spiral arms, bars, rings, tidal tails etc. carry information about their structure, origin and evolution. It is therefore important to catalogue and study such features and to correlate them with other basic galaxy properties the environment in which the galaxies are located and their interactions with other galaxies. Surveys such as SDSS, Pan-STARRS, HSC-SSP have made available very large samples of galaxies for gainful morphological studies. The availability of galaxyRead More →

Galaxy 3D Shape Recovery using Mixture Density Network Suk Yee Yong, K. E. Harborne, Caroline Foster, Robert Bassett, Gregory B. Poole, Mitchell Cavanagh arXiv:2404.04491v1 Announce Type: new Abstract: Since the turn of the century, astronomers have been exploiting the rich information afforded by combining stellar kinematic maps and imaging in an attempt to recover the intrinsic, three-dimensional (3D) shape of a galaxy. A common intrinsic shape recovery method relies on an expected monotonic relationship between the intrinsic misalignment of the kinematic and morphological axes and the triaxiality parameter. Recent studies have, however, cast doubt about underlying assumptions relating shape and intrinsic kinematic misalignment. In thisRead More →

Tracing the evolving X-ray reverberation lags within an individual AGN light curve N. Nakhonthong, P. Chainakun, W. Luangtip, A. J. Young arXiv:2404.04493v1 Announce Type: new Abstract: We present the Granger causality (GC) test for the X-ray reverberation analysis of Active Galactic Nuclei (AGN). If the light curves in the continuum-dominated band help predict (Granger cause) those dominated by reflection, the Granger lags that associate to the intrinsic reverberation lags can be inferred. We focus on six AGN observed by XMM-Newton, including the sources well-known to exhibit clear X-ray reverberation lags (IRAS 13224-3809 and 1H 0707-495) and those in which reverberation signatures are not well confirmedRead More →

On Innermost Stable Spherical Orbits near a rotating black hole: A numerical study of the particle motion near the plunging region Ondv{r}ej Kop’av{c}ek, Vladim’ir Karas arXiv:2404.04501v1 Announce Type: new Abstract: According to General Relativity, astrophysical black holes are described by a small number of parameters. Apart from the mass of the black hole ($M$), among the most interesting characteristics is the spin ($a$), which determines the degree of rotation, i.e., the angular momentum of the black hole. The latter is observationally constrained by the spectral and timing properties of the radiation signal emerging from an accretion disk of matter orbiting near the event horizon. InRead More →

First ALMA observations of the HD 105211 debris disc: A warm dust component close to a gigayear-old star Qiancheng Yang, Qiong Liu, Grant M. Kennedy, Mark C. Wyatt, Sarah Dodson-Robinson, Rachel Akeson, Nenghui Liao arXiv:2404.04508v1 Announce Type: new Abstract: Most debris discs consist of a gas-poor, cold dust belt located tens to hundreds of astronomical units away from the host star. Many cold dust belts exhibit distinct structures attributed to the dynamic interaction of planetary systems. Moreover, in a few systems, additional warm components can be found closer to the central star, resembling the asteroid belt or zodiacal dust in our Solar System. In thisRead More →

Cloud-Scale Molecular Gas Properties of the Antennae Merger: A Comparative Study with PHANGS-ALMA Galaxies and NGC 3256 Nathan Brunetti, Christine D. Wilson, Hao He, Jiayi Sun, Adam K. Leroy, Erik Rosolowsky, Ashley Bemis, Frank Bigiel, Brent Groves, Toshiki Saito, Eva Schinnerer arXiv:2404.04555v1 Announce Type: new Abstract: We present observations of the central 9 kpc of the Antennae merger (NGC 4038/9) at 55 pc resolution in the CO 2-1 line obtained with the Atacama Large Millimeter/submillimeter Array (ALMA). We use a pixel-based analysis to compare the gas properties in the Antennae to those in 70 nearby spiral galaxies from the PHANGS-ALMA survey, as well as theRead More →

DUVET: Resolved direct metallicity measurements in the outflow of starburst galaxy NGC 1569 Magdalena J. Hamel-Bravo, Deanne B. Fisher, Danielle Berg, Bjarki Bj"orgvinsson, Alberto D. Bolatto, Alex J. Cameron, John Chisholm, Drummond B. Fielding, Rodrigo Herrera-Camus, Glenn G. Kacprzak, Miao Li, Barbara Mazzilli Ciraulo, Anna F. McLeod, Daniel K. McPherson, Nikole M. Nielsen, Bronwyn Reichardt Chu, Ryan J. Rickards Vaught, Karin Sandstrom arXiv:2404.04600v1 Announce Type: new Abstract: We present the results of direct-method metallicity measurements in the disk and outflow of the low-metallicity starburst galaxy NGC 1569. We use Keck Cosmic Web Imager observations to map the galaxy across 54$arcsec$ (800 pc) along the majorRead More →

The particle acceleration study in blazar jet Hubing Xiao, Wenxin Yang, Yutao Zhang, Shaohua Zhang, Junhui Fan, Liping Fu, Jianghe Yang arXiv:2404.04609v1 Announce Type: new Abstract: The particle acceleration of blazar jets is crucial to high-energy astrophysics, yet the acceleration mechanism division in blazar subclasses and the underlying nature of these mechanisms remain elusive. In this work, we utilized the synchrotron spectral information (synchrotron peak frequency, $log nu_{rm sy}$, and corresponding curvature, $b_{rm sy}$) of 2705 blazars from the literature and studied the subject of particle acceleration in blazar jets by analysing the correlation between $log nu_{rm sy}$ and $1/b_{rm sy}$. Our results suggested thatRead More →

Deciphering Radio Emissions from Accretion Disk Winds in Radio-Quiet Active Galactic Nuclei Tomoya Yamada, Nobuyuki Sakai, Yoshiyuki Inoue, Tomonari Michiyama arXiv:2404.04632v1 Announce Type: new Abstract: Unraveling the origins of radio emissions from radio-quiet active galactic nuclei (RQ AGNs) remains a pivotal challenge in astrophysics. One potential source of this radiation is the shock interaction between AGN disk winds and the interstellar medium (ISM). To understand this phenomenon, we construct a spherical, one-zone, and self-similar expansion model of shock structure between ultra-fast outflows (UFOs) and the ISM. We then calculate the energy density distribution of non-thermal electrons by solving the transport equation, considering diffusive shock accelerationRead More →

Main-belt and Trojan Asteroid Phase Curves from the ATLAS Survey James E. Robinson, Alan Fitzsimmons, David R. Young, Michele Bannister, Larry Denneau, Nicolas Erasmus, Amanda Lawrence, Robert J. Siverd, John Tonry arXiv:2404.04657v1 Announce Type: new Abstract: Sparse and serendipitous asteroid photometry obtained by wide field surveys such as the Asteroid Terrestrial-impact Last Alert System (ATLAS) is a valuable resource for studying the properties of large numbers of small Solar System bodies. We have gathered a large database of ATLAS photometry in wideband optical cyan and orange filters, consisting of 9.6e{7} observations of 4.5e{5} main belt asteroids and Jupiter Trojans. We conduct a phase curve analysisRead More →

Extrapolation of Type Ia Supernova Spectra into the Near-Infrared Using PCA Anthony Burrow, E. Baron, Christopher R. Burns, Eric Y. Hsiao, Jing Lu, Chris Ashall, Peter J. Brown, James M. DerKacy, G. Folatelli, Llu’is Galbany, P. Hoeflich, Kevin Krisciunas, N. Morrell, M. M. Phillips, Benjamin J. Shappee, Maximilian D. Stritzinger, Nicholas B. Suntzeff arXiv:2404.04724v1 Announce Type: new Abstract: We present a method of extrapolating the spectroscopic behavior of Type Ia supernovae (SNe Ia) in the near-infrared (NIR) wavelength regime up to 2.30 $mu$m using optical spectroscopy. Such a process is useful for accurately estimating K-corrections and other photometric quantities of SNe Ia in the NIR.Read More →

Exploring the MMRD Relation for Novae in M31 J. Grace Clark, Kamil Hornoch, Allen W. Shafter, Hana Kuv{c}’akov’a, Jan Vrav{s}til, Peter Kuv{s}nir’ak, Marek Wolf arXiv:2404.04733v1 Announce Type: new Abstract: The results of a two decade long $R$-band photometric survey of novae in M31 are presented. From these data, $R$-band light curves have been determined for 180 novae with data sufficient for estimating peak brightness and subsequent rate of decline. The data show a weak correlation of peak brightness with fade rate consistent with the well-known Maximum Magnitude versus Rate of Decline (MMRD) relation. As generally appreciated for Galactic novae, the large scatter in the MMRDRead More →

Technical Noise, Data Quality, and Calibration Requirements for Next-Generation Gravitational-Wave Science Elenna Capote, Louis Dartez, Derek Davis arXiv:2404.04761v1 Announce Type: new Abstract: The next generation of ground-based gravitational-wave interferometers is expected to generate a bounty of new astrophysical discoveries, with sensitivities and bandwidths greatly improved compared to current-generation detectors. These detectors will allow us to make exceptional advancements in our understanding of fundamental physics, the dynamics of dense matter, and the cosmic history of compact objects. The fundamental design aspects of these planned interferometers will enable these new discoveries; however, challenges in technical noise, data quality, and calibration have the potential to limit the scientificRead More →

WFC3 Infrared Spectroscopic Parallel (WISP) Survey: Photometric and Emission Line Data Release A. J. Battisti, M. B. Bagley, M. Rafelski, I. Baronchelli, Y. S. Dai, A. L. Henry, H. Atek, J. Colbert, M. A. Malkan, P. J. McCarthy, C. Scarlata, B. Siana, H. I. Teplitz, A. Alavi, K. Boyett, A. J. Bunker, J. P. Gardner, N. P. Hathi, D. Masters, V. Mehta, M. Rutkowski, K. Shahinyan, B. Sunnquist, X. Wang arXiv:2404.04762v1 Announce Type: new Abstract: We present reduced images and catalogues of photometric and emission line data ($sim$230,000 and $sim$8,000 sources, respectively) for the WFC3 Infrared Spectroscopic Parallel (WISP) Survey. These data are made publiclyRead More →

Thermal X-ray Emission in the Western Half of the LMC Superbubble 30 Dor C Yi-Heng Chi, Han-XIao Chen, Yang Chen, Yi-Fan Meng, Ping Zhou, Lei Sun, Wei Sun arXiv:2404.04778v1 Announce Type: new Abstract: While 30 Dor C is a unique superbubble in the Large Magellanic Cloud for its luminous non-thermal X-ray emission, the thermal X-ray emission it emanates has not yet been thoroughly investigated and well constrained. Based on the separate ~1 Ms deep XMM-Newton and Chandra observations, we report the discovery of the thermally-emitting plasma in some portions of the western half of 30 Dor C. The thermal emission can be reproduced by aRead More →

Radio AGN Activity in Low Redshift Galaxies is Not Directly Related to Star Formation Rates Arjun Suresh, Michael R. Blanton arXiv:2404.04780v1 Announce Type: new Abstract: We examine the demographics of radio-emitting active galactic nuclei (AGN) in the local universe as a function of host galaxy properties, most notably both stellar mass and star formation rate. Radio AGN activity is theoretically implicated in helping reduce star formation rates of galaxies, and therefore it is natural to investigate the relationship between these two galaxy properties. We use a sample of around 10, 000 galaxies from the Mapping Nearby Galaxies at APO (MaNGA) survey, part of the SloanRead More →