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Related papers: Microlensing in the Small Magellanic Cloud: Lesson…

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Studies of gravitational microlensing effects require the estimation of their detection efficiency as soon as one wants to quantify the massive compact objects along the line of sight of source targets. This is particularly important for…

Astrophysics of Galaxies · Physics 2023-10-11 Tristan Blaineau , Marc Moniez

We present previously unpublished photometry of three Large Magellanic Cloud (LMC) microlensing events and show that the new photometry confirms the microlensing interpretation of these events. These events were discovered by the MACHO…

Astrophysics · Physics 2009-11-10 David P. Bennett , Andrew C. Becker , Austin Tomaney

We present the results from an analysis of Hubble Space Telescope High Resolution Camera data for the Large Magellanic Cloud microlensing event MACHO-LMC-5. By determining the parallax and proper motion of this object we find that the lens…

Astrophysics · Physics 2009-11-10 A. J. Drake , K. H. Cook , S. C. Keller

We present a detailed investigation of the Large Magellanic Cloud (LMC) disk using classical Cepheids. Our analysis is based on optical (I,V; OGLE-IV), near-infrared (NIR: J,H,Ks) and mid-infrared (MIR: w1; WISE) mean magnitudes. By…

Astrophysics of Galaxies · Physics 2016-12-07 L. Inno , G. Bono , N. Matsunaga , G. Fiorentino , M. Marconi , B. Lemasle , R. da Silva , I. Soszyński , A. Udalski , M. Romaniello , H. -W. Rix

We present measurements of the microlensing optical depth and event rate toward the Galactic bulge using the dataset from the 2006--2014 MOA-II survey, which covers 22 bulge fields spanning ~42 deg^2 between -5 deg < l < 10 deg and -7 deg <…

VISTA observed the Small Magellanic Cloud (SMC), as part of the VISTA survey of the Magellanic Clouds system (VMC), for six years (2010-2016). The acquired multi-epoch YJKs images have allowed us to probe the stellar populations to an…

Astrophysics of Galaxies · Physics 2020-01-08 Maria-Rosa L. Cioni , Florian Niederhofer , Stefano Rubele , Ning-Chen Sun

We present the observations of the binary lensing event MACHO-98-SMC-1 conducted at the Mt.~Stromlo 74" telescope by the Microlensing Planet Search (MPS) collaboration. The MPS data constrain the first caustic crossing to have occurred…

We present an analysis of dust grain emission in the diffuse interstellar medium of the Small Magellanic Cloud (SMC). This study is motivated by the availability of 170 microns ISOPHOT data covering a large part of the SMC, with a…

Astrophysics · Physics 2009-11-10 C. Bot , F. Boulanger , G. Lagache , L. Cambresy , D. Egret

We evaluate the consistency between lensing and clustering probes of large-scale structure based on measurements of projected galaxy clustering from BOSS combined with overlapping galaxy-galaxy lensing from three surveys: DES Y3, HSC Y1,…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-26 A. Amon , N. C. Robertson , H. Miyatake , C. Heymans , M. White , J. DeRose , S. Yuan , R. H. Wechsler , T. N. Varga , S. Bocquet , A. Dvornik , S. More , A. J. Ross , H. Hoekstra , A. Alarcon , M. Asgari , J. Blazek , A. Campos , R. Chen , A. Choi , M. Crocce , H. T. Diehl , C. Doux , K. Eckert , J. Elvin-Poole , S. Everett , A. Ferté , M. Gatti , G. Giannini , D. Gruen , R. A. Gruendl , W. G. Hartley , K. Herner , H. Hildebrandt , S. Huang , E. M. Huff , B. Joachimi , S. Lee , N. MacCrann , J. Myles , A. Navarro- Alsina , T. Nishimichi , J. Prat , L. F. Secco , I. Sevilla-Noarbe , E. Sheldon , T. Shin , T. Trster , M. A. Troxel , I. Tutusaus , A. H. Wright , B. Yin , M. Aguena , S. Allam , J. Annis , D. Bacon , M. Bilicki , D. Brooks , D. L. Burke , A. Carnero Rosell , J. Carretero , F. J. Castander , R. Cawthon , M. Costanzi , L. N. da Costa , M. E. S. Pereira , J. de Jong , J. De Vicente , S. Desai , J. P. Dietrich , P. Doel , I. Ferrero , J. Frieman , J. García-Bellido , D. W. Gerdes , J. Gschwend , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , A. Kannawadi , K. Kuehn , N. Kuropatkin , O. Lahav , M. Lima , M. A. G. Maia , J. L. Marshall , F. Menanteau , R. Miquel , J. J. Mohr , R. Morgan , J. Muir , F. Paz-Chinchon , A. Pieres , A. A. Plazas Malagón , A. Porredon , M. Rodriguez-Monroy , A. Roodman , E. Sanchez , S. Serrano , H. Shan , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , C. To , Y. Zhang

We obtain models for a triaxial Milky Way spheroid based on data by Newberg and Yanny. The best fits to the data occur for a spheroid center that is shifted by 3kpc from the Galactic Center. We investigate effects of the triaxiality on the…

Astrophysics · Physics 2009-11-13 Christopher Savage , Heidi Jo Newberg , Katherine Freese , Paolo Gondolo

Doppler lensing, a relativistic effect resulting from the peculiar velocities of galaxies along the line of sight, provides insight into the large-scale structure of the Universe. Relativistic simulations are essential for modeling Doppler…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-23 Mubtasim Fuad , Sonia Akter Ema , Md Rasel Hossen

The Small Magellanic Cloud (SMC) has been tidally shaped by the interaction with the Large Magellanic Cloud (LMC). The scope of such an interaction has recently been studied from different astrophysical properties of its star cluster…

Astrophysics of Galaxies · Physics 2025-10-15 A. E. Piatti , D. M. F. Illesca , M. Chiarpotti , R. Butrón

Galaxy interactions distort the distribution of baryonic matter and can affect star formation. The nearby Magellanic Clouds are a prime example of an ongoing galaxy interaction process. Here we use the intermediate-age ($\sim1$-$10$ Gyr)…

Using eight dark matter haloes extracted from fully-self consistent cosmological N-body simulations, we perform microlensing experiments. A hypothetical observer is placed at a distance of 8.5 kpc from the centre of the halo measuring…

Astrophysics · Physics 2009-11-11 Janne Holopainen , Chris Flynn , Alexander Knebe , Stuart P. Gill , Brad K. Gibson

Using 7 years of MACHO survey data, we present a new determination of the optical depth to microlensing towards the Galactic bulge. We select the sample of 62 microlensing events (60 unique) on clump giant sources and perform a detailed…

We compute a microlensing map for the Galactic bar. The predicted event rate and event duration distribution are consistent with the $55$ events recently reported by the MACHO and OGLE collaborations. Most of the events are due to lensing…

Astrophysics · Physics 2015-06-24 HongSheng Zhao , R. M. Rich , D. N. Spergel

We have derived high spatial resolution metallicity maps covering $\sim$42 deg$^2$ across the Small Magellanic Cloud (SMC) in an attempt to understand its metallicity distribution and gradients up to a radius of $\sim$ 4$^{\circ}$. Using…

Young, OB-type candidates are identified in a ~7900 sq-deg. region encompassing the Large and Small Magellanic Clouds (LMC/SMC) periphery, the Bridge, part of the Magellanic Stream (MS) and Leading Arm (LA). Selection is based on UV,…

Astrophysics of Galaxies · Physics 2015-06-05 Dana I. Casetti-Dinescu , Katherine Vieira , Terrence M. Girard , William F. van Altena

We present a map of the total intrinsic reddening across ~34 deg$^{2}$ of the Small Magellanic Cloud (SMC) derived using optical ($ugriz$) and near-infrared (IR; $YJK_{\mathrm{s}}$) spectral energy distributions (SEDs) of background…

We present the results of targeted observations and a survey of 1612-, 1665-, and 1667-MHz circumstellar OH maser emission from asymptotic giant branch (AGB) stars and red supergiants (RSGs) in the Small Magellanic Cloud (SMC), using the…