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Using the infrared photometry data extracted from the 2MASS, IRAS and MSX databases, 50 suspected young stellar objects (YSOs) are selected from about 37500 infrared objects in the 3x3 deg area with the center at Galactic longitude 142.5…

Astrophysics · Physics 2009-06-25 V. Straizys , V. Laugalys

We present far-infrared, submillimetre, and millimetre observations of bright IRAS sources and outflows that are associated with massive CS clumps in the Monoceros OB1 Dark Cloud. Individual star-forming cores are identified within each…

Astrophysics · Physics 2009-11-07 G. Wolf-Chase , G. Moriarty-Schieven , M. Fich , M. Barsony

Orion Source I (`SrcI') is the protostar at the center of the Kleinmann-Low Nebula. ALMA observations of SrcI with 0.2" angular resolution were made at 350 and 660 GHz to search for the H26alpha and H21alpha hydrogen recombination lines and…

Astrophysics of Galaxies · Physics 2016-12-28 R. L. Plambeck , M. C. H. Wright

The region surrounding the well-known reflection nebula, NGC 7023, illuminated by a Herbig Be star, HD 200775, located in the dark cloud L1174 is studied in this work. Based on the distances and proper motion values from Gaia DR2 of 20…

Solar and Stellar Astrophysics · Physics 2020-05-04 Piyali Saha , Maheswar G. , Kamath U. S. , Lee C. W , Manoj P. , Blesson Mathew , Ekta Sharma

We report Radio Recombination Line (RRL) and continuum observations toward the IRAS point source 16362--4845, embedded within the Bright-Rimmed Cloud (BRC) SFO 79, a small molecular cloud lying at the edge of the HII region RCW 108. High…

Astrophysics · Physics 2009-11-10 J. S. Urquhart , M. A. Thompson , L. K. Morgan , Glenn J. White

We report the detection of a new radio recombination line (RRL) maser object toward the IRS2 source in the MonR2 ultracompact HII region. The continuum emission at 1.3mm and 0.85mm and the H30a and H26a lines were observed with the…

Solar and Stellar Astrophysics · Physics 2015-06-12 I. Jimenez-Serra , A. Baez-Rubio , V. M. Rivilla , J. Martin-Pintado , Q. Zhang , M. Dierickx , N. Patel

In this paper we present the results of a mid infrared study of G49.5-0.4, or W51A, part of the massive starbirth complex W51. Combining public data from the $Spitzer$ IRAC camera, and Gemini mid infrared camera T-ReCS at 7.73, 9.69, 12.33…

Astrophysics of Galaxies · Physics 2016-07-06 Cassio L. Barbosa , Robert D. Blum , Augusto Damineli , Peter S. Conti , Danilo M. Gusmão

As nearby neighbors to the Milky Way, the Large and Small Magellanic Clouds (LMC and SMC) provide a unique opportunity to study star formation in the context of their galactic ecosystems. Thousands of young stellar objects (YSOs) have been…

Astrophysics of Galaxies · Physics 2019-01-16 Megan Reiter , Omnarayani Nayak , Margaret Meixner , Olivia Jones

Episodic accretion plays an important role in the evolution of young stars. Although it has been under investigation for a long time, the origin of such episodic accretion events is not yet understood. We investigate the dust and gas…

Solar and Stellar Astrophysics · Physics 2019-10-16 Andreas Postel , Marc Audard , Eduard Vorobyov , Odysseas Dionatos , Christian Rab , Manuel Güdel

We have combined new I, J, H, and Ks imaging of portions of the Chamaeleon II, Lupus I, and Ophiuchus star-forming clouds with 3.6 to 24 micron imaging from the Spitzer Legacy Program, "From Molecular Clouds to Planet Forming Disks", to…

Astrophysics · Physics 2009-11-11 K. N. Allers , J. E. Kessler-Silacci , L. A. Cieza , D. T. Jaffe

We report 5-43 GHz radio observations of the CRL 2136 region at 0.6-6 arcsec resolution. We detect weak (mJy intensity) radio emission from the deeply embedded high-mass protostar IRS 1, which has an optically thick spectrum up to…

Astrophysics · Physics 2009-11-10 K. M. Menten , F. F. S. van der Tak

Searching for variability, we have observed a sample of hot post-AGB stars and young Planetary Nebulae candidates with the Very Large Array at 4.8, 8.4, and 22.4 GHz. The sources had been previously detected in the radio continuum, which is…

Solar and Stellar Astrophysics · Physics 2015-05-20 L. Cerrigone , C. Trigilio , G. Umana , C. S. Buemi , P. Leto

Aim: We observed the center of the supernova remnant Vela Jr in radio continuum in order to search for a counterpart to the compact central X-ray source CXOU J085201.4-461753, possibly a neutron star candidate which could be the remnant of…

Astrophysics · Physics 2009-11-11 E. M. Reynoso , G. Dubner , E. Giacani , S. Johnston , A. J. Green

We present [Fe II] 1.64 {\mu}m imaging observations for jets and outflows from young stellar objects (YSOs) over the northern part (~ 24'x45') of the Carina Nebula, a massive star forming region. The observations were performed with IRIS2…

Using infrared photometric data extracted from the 2MASS, IRAS and MSX databases, 142 suspected young stellar objects (YSOs) are selected from about 2 million stars in the Camelopardalis segment of the Milky Way limited by Galactic…

Astrophysics · Physics 2009-06-25 V. Straizys , V. Laugalys

IRAS 22134+5834 was observed in the centimeter with (E)VLA, 3~mm with CARMA, 2~mm with PdBI, and 1.3~mm with SMA, to study the continuum emission as well as the molecular lines, that trace different physical conditions of the gas to study…

We present a study of the structure and dynamics of the star forming region B1-IRS (IRAS 03301+3057) using the properties of different molecules at high angular resolution (~4''). We have used VLA observations of NH3, CCS, and H2O masers at…

We present ultraviolet, optical, near-infrared, Spitzer mid-infrared, and radio images of 14 radio-selected objects in M 33. These objects are thought to represent the youngest phase of star cluster formation. We have detected the majority…

We present high spatial resolution Submillimeter Array observations and supplementary single-dish photometry of the molecular gas and dust around IRAS 04158+2805, a young source with spectral type M5-M6 in the Taurus star-forming region. A…

Astrophysics · Physics 2009-11-13 Sean M. Andrews , Michael C. Liu , Jonathan P. Williams , K. N. Allers

We present VLA radio continuum observations at 3.6 and 6 cm of a ~0.65 sq.deg. field in the galactic plane at l=+45deg . These observations are meant to be used in a comparison with ISO observations at 7 and 15 um of the same region. In…

Astrophysics · Physics 2009-10-31 Leonardo Testi , Marcello Felli , Gregory B. Taylor