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We report the discovery of a new young stellar cluster in the outer Galaxy located at the position of an IRAS PSC source that has been previously mis-identified as an external galaxy. The cluster is seen in our near-infrared imaging towards…

Solar and Stellar Astrophysics · Physics 2015-08-06 J. L. Yun , D. Elia , A. A. Djupvik , J. M. Torrelles , S. Molinari

The mass accretion rates of young stellar objects (YSOs) are key to understanding how stars form, how their circumstellar disks evolve, and even how planets form. We develop a Bayesian framework to determine the accretion rates of a sample…

Solar and Stellar Astrophysics · Physics 2025-01-24 Lauren Halstead Willett , Joe P. Ninan , Suvrath Mahadevan , Gregory R. Zeimann , Steven Janowiecki , Gary J. Hill

We present the results from a survey, designed to investigate the accretion process of massive young stellar objects (MYSOs) through near infrared narrow band imaging using the H$_2$ $\nu$=1-0 S(1) transition filter. A sample of 353 Massive…

Solar and Stellar Astrophysics · Physics 2015-10-02 Felipe Navarete , Augusto Damineli , Cassio L. Barbosa , Robert D. Blum

We investigate the dust structure of gravitationally unstable disks undergoing mass accretion from the envelope envisioning the application to Class 0/I young stellar objects (YSOs) We find that the dust disk quickly settles into a steady…

Solar and Stellar Astrophysics · Physics 2017-06-16 Y. Tsukamoto , S. Okuzumi , A. Kataoka

In this paper we undertake a study of the 21 square degree SMOG field, a Spitzer cryogenic mission Legacy program to map a region of the outer Milky Way towards the Perseus and Outer spiral arms with the IRAC and MIPS instruments. We…

Astrophysics of Galaxies · Physics 2019-08-14 Elaine Winston , Joseph Hora , Robert Gutermuth , Volker Tolls

AIMS: To study the structure of nearby (< 500 pc) dense starless and star-forming cores with the particular goal to identify and understand evolutionary trends in core properties, and to explore the nature of Very Low Luminosity Objects (<…

Astrophysics · Physics 2009-11-13 Jens Kauffmann , Frank Bertoldi , Tyler L. Bourke , Neal J. Evans , Chang Won Lee

(Abridged) Protostellar systems evolve from prestellar cores, through the deeply embedded stage and then disk-dominated stage, before they end up on the main sequence. Knowing how much time a system spends in each stage is crucial for…

Solar and Stellar Astrophysics · Physics 2018-10-24 L. E. Kristensen , M. M. Dunham

We demonstrate the unique capabilities of Herschel to study very young luminous extragalactic young stellar objects (YSOs) by analyzing a central strip of the Large Magellanic Cloud obtained through the HERITAGE Science Demonstration…

We use the COMPLETE Survey's observations of the Perseus star-forming region to assess and intercompare three methods for measuring column density in molecular clouds: extinction mapping (NIR); thermal emission mapping (FIR); and mapping…

Astrophysics · Physics 2011-02-11 Alyssa A. Goodman , Jaime E. Pineda , Scott L. Schnee

This paper describes the first optical spectroscopic survey of class I sources (also known as embedded sources and protostars) in the Taurus-Auriga dark cloud. We detect 10 of the 24 known class I sources in the cloud at 5500-9000 A. All…

Astrophysics · Physics 2009-10-30 Scott J. Kenyon , David I. Brown , Chris Tout , Perry Berlind

We explore the relationship between young, embedded binaries and their parent cores, using observations within the Perseus Molecular Cloud. We combine recently published VLA observations of young stars with core properties obtained from…

Solar and Stellar Astrophysics · Physics 2017-06-28 Sarah I Sadavoy , Steven W. Stahler

We investigate the young stellar objects (YSOs) in the Lynds~1641 (L1641) cloud using multi-wavelength data including Spitzer, WISE, 2MASS, and XMM covering ~1390 YSOs across a range of evolutionary stages. In addition, we targeted a…

Solar and Stellar Astrophysics · Physics 2015-06-15 Min Fang , Jinyoung Serena Kim , Roy van Boekel , Aurora Sicilia-Aguilar , Thomas Henning , Kevin Flaherty

Cold ($\sim$10 K) and dense ($\sim$10$^{5}$ cm$^{-3}$) cores of gas and dust within molecular clouds, known as starless and dynamically evolved prestellar cores, are the birthplaces of low-mass ($M$ $\leq$ few M$_\odot$) stars. As…

Astrophysics of Galaxies · Physics 2024-08-22 Samantha Scibelli , Yancy Shirley , Andrés Megías , Izaskun Jiménez-Serra

We analyze Herschel Space Observatory observations of 104 young stellar objects with protoplanetary disks in the ~1.5 Myr star-forming region Lynds 1641 (L1641) within the Orion A Molecular Cloud. We present spectral energy distributions…

Near-infrared surveys of high-mass star-forming regions start to shed light onto their stellar content. A particular class of objects found in these regions, the so-called massive Young Stellar Objects (YSOs) are surrounded by dense…

Compact radio emission provides a reliable method for the detection of low luminosity young stellar objects (YSOs), and is particularly useful for detecting the earliest stages of protostellar evolution where the source itself may still be…

Astrophysics of Galaxies · Physics 2012-10-29 Anna M. M. Scaife

The sample of planet-forming disks observed by high-contrast imaging campaigns over the last decade is mature enough to enable the demographical analysis of individual star-forming regions. We present the full census of Taurus sources with…

Accurate measurements of statistical properties, such as the star formation rate and the lifetime of young stellar objects (YSOs) in different stages, is essential for constraining star formation theories. However, it is a difficult task to…

Solar and Stellar Astrophysics · Physics 2021-05-04 Yi-Lung Chiu , Chi-Ting Ho , Daw-Wei Wang , Shih-Ping Lai

The combination of mid-infrared data from the MSX satellite mission and ground-based near-infrared photometry is used to characterise the properties of the mid-infrared population of the Galactic plane. The colours of the youngest sources…

Astrophysics · Physics 2009-11-07 S. L. Lumsden , M. G. Hoare , R. D. Oudmaijer , D. Richards
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