Search Publications
Firmamento: A Multimessenger Astronomy Tool for Citizen and Professional Scientists
Giommi, Paolo; Doro, Michele; Pollock, A. M. T. +12 more
Firmamento (https://firmamento.hosting.nyu.edu) is a new-concept, web-based, and mobile-friendly data analysis tool dedicated to multifrequency/multimessenger emitters, as exemplified by blazars. Although initially intended to support a citizen researcher project at New York University–Abu Dhabi, Firmamento has evolved to be a valuable tool for pr…
Evolution of the Local Spiral Structure Revealed by OB-type Stars in Gaia DR3
Hao, C. J.; Hou, L. G.; Lin, Z. H. +5 more
The structure and evolution of the spiral arms of the Milky Way have long been an important yet controversial issue. The wide age range of OB-type stars, coupled with the large amount of high-precision astrometric data provided by Gaia DR3, presents us with an opportunity to explore this issue. After constructing overdensity maps and examining the…
UVIT Study of the MAgellanic Clouds (U-SMAC). II. A Far-UV Catalog of the Small Magellanic Cloud: Morphology and Kinematics of Young Stellar Population
Subramaniam, Annapurni; Subramanian, Smitha; Nayak, Prasanta K. +1 more
The Small Magellanic Cloud (SMC) is an irregular dwarf galaxy that has recently undergone an interaction with the Large Magellanic Cloud. The young massive stars in the SMC formed in the disturbed low-metallicity environment are important targets in astrophysics. We present a catalog of ∼76,800 far-ultraviolet (FUV) sources toward the SMC detected…
Circumstellar Disk Accretion Across the Lagoon Nebula: The Influence of Environment and Stellar Mass
Howell, Steve B.; Cody, Ann Marie; Beccari, Giacomo +9 more
Pre-main-sequence disk accretion is pivotal for determining the final stellar properties and the early conditions for close-in planets. We aim to establish the impact of internal (stellar mass) and external (radiation field) parameters on the disk evolution in the Lagoon Nebula massive star-forming region. We employ simultaneous u, g, r, i, Hα tim…
A Census of the β Pic Moving Group and Other Nearby Associations with Gaia
Luhman, K. L.
I have used the third data release of the Gaia mission to improve the reliability and completeness of membership samples in the β Pic moving group (BPMG) and other nearby associations with ages of 20–50 Myr (Sco Body, Carina, Columba, χ 1 For, Tuc-Hor, IC 2602, IC 2391, NGC 2547). I find that Carina, Columba, and χ 1 For are …
Shadowing in the Protoplanetary Disk of ZZ Tau IRS with HST
Dong, Ruobing; Liu, Hauyu Baobab; Hashimoto, Jun +2 more
An inner component misaligned from an outer component in a protoplanetary disk can result in the former casting shadows on the latter. We present a new instance of shadowing on the outer disk around a very-low-mass star, ZZ Tau IRS. Through the analysis of near-infrared (NIR) archival data at λ = 1.6 µm acquired with the Wide Field Camera 3 …
JWST/NIRCam Imaging of Young Stellar Objects. I. Constraints on Planets Exterior to the Spiral Disk Around MWC 758
Dong, Ruobing; Wolff, Schuyler G.; Johnstone, Doug +18 more
MWC 758 is a young star hosting a spiral protoplanetary disk. The spirals are likely companion-driven, and two previously identified candidate companions have been identified—one at the end the Southern spiral arm at ∼0.″6, and one interior to the gap at ∼0.″1. With JWST/NIRCam, we provide new images of the disk and constraints on planets exterior…
Chemical Homogeneity of Wide Binary Systems: An Approach from Near-Infrared Spectroscopy
Lee, Young-Wook; Koch-Hansen, Andreas J.; Hong, Seungsoo +2 more
Wide binaries, with separations between the two stars from a few au to more than several thousand au, are valuable objects for various research topics in Galactic astronomy. As the number of newly reported wide binaries continues to increase, studying the chemical abundances of their component stars becomes more important. We conducted high-resolu…
HATS-38 b and WASP-139 b Join a Growing Group of Hot Neptunes on Polar Orbits
Jordán, Andrés; Brahm, Rafael; Boyle, Gavin +9 more
We constrain the sky-projected obliquities of two low-density hot Neptune planets, HATS-38 b and WASP-139 b, orbiting nearby G and K stars using Rossiter–McLaughlin (RM) observations with VLT/ESPRESSO, yielding
A Data-driven Search For Mid-infrared Excesses Among Five Million Main-sequence FGK Stars
Hogg, David W.; Contardo, Gabriella
Stellar infrared excesses can indicate various phenomena of interest, from protoplanetary disks to debris disks, or (more speculatively) techno-signatures along the lines of Dyson spheres. In this paper, we conduct a large search for "extreme" infrared excesses, designed as a data-driven contextual anomaly detection pipeline. We focus our search o…