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We present a multi-wavelength observational study of a low-mass star-forming region, L1251-C, with observational results at wavelengths from the near-infrared to the millimeter. Spitzer Space Telescope observations confirmed that IRAS…

We present 325 MHz (90 cm wavelength) radio observations of ultracool dwarfs TVLM 513-46546 and 2MASS J0036+1821104 using the Very Large Array (VLA) in June 2007. Ultracool dwarfs are expected to be undetectable at radio frequencies, yet…

太阳与恒星天体物理 · 物理学 2012-01-31 T. R. Jaeger , R. A. Osten , T. J. Lazio , N. Kassim , R. L. Mutel

Context. This study is part of a large project to study the physics of accretion and molecular outflows towards a selected sample of high-mass star-forming regions that show evidence of infall and rotation from previous studies. Aims. We…

星系天体物理 · 物理学 2015-05-28 M. T. Beltran , R. Cesaroni , Q. Zhang , R. Galvan-Madrid , H. Beuther , C. Fallscheer , R. Neri , C. Codella

We present radio continuum observations at 7 mm made using the Very Large Array towards three massive star forming regions thought to be in very early stages of evolution selected from the sample of Sridharan et al. (2002). Emission was…

天体物理学 · 物理学 2009-06-23 Guido Garay , Luis F. Rodriguez , Itziar de Gregorio-Monsalvo

Jets and outflows are ubiquitous phenomena in astrophysics, found in our Galaxy in diverse environments, from the formation of stars to late-type stellar objects. We present observations conducted with the 305m Arecibo Telescope of the…

太阳与恒星天体物理 · 物理学 2019-06-20 A. Strack , E. D. Araya , M. E. Lebrón , R. F. Minchin , H. G. Arce , T. Ghosh , P. Hofner , S. Kurtz , L. Olmi , Y. Pihlström , C. J. Salter

We report sensitive VLA 3.6 cm radio observations toward the head of the Cone nebula in NGC 2264, made in 2006. The purpose of these observations was to study a non-thermal radio jet recently discovered, that appears to emanate from the…

天体物理学 · 物理学 2009-11-13 A. Trejo , Luis F. Rodriguez

We present sensitive, large-scale maps of the CO J=1-0 emission of the L1448 dark cloud. These maps were acquired using the On-The-Fly capability of the NRAO 12-meter telescope. CO outflow activity is seen in L1448 on parsec-scales for the…

天体物理学 · 物理学 2009-10-31 G. A. Wolf-Chase , M. Barsony , J. O'Linger

The link between the circum-galactic medium (CGM) and the stellar growth of massive galaxies at high-$z$ depends on the properties of the widespread cold molecular gas. As part of the SUPERCOLD-CGM survey (Survey of Protocluster ELANe…

We have observed 99 mid-infrared-bright, massive young stellar objects and compact HII regions drawn from the Red MSX source (RMS) survey in the J=3$-$2 transition of $^{12}$CO and $^{13}$CO, using the James Clerk Maxwell Telescope. 89…

太阳与恒星天体物理 · 物理学 2015-09-02 L. T. Maud , T. J. T. Moore , S. L. Lumsden , J. C. Mottram , J. S. Urquhart , M. G. Hoare

This paper reports on the detection of a likely explosive outflow in the high-mass star-forming complex G34.26+0.15, adding to the small number (six) of explosive outflows detected so far. ALMA CO(2-1) and SiO(5-4) archival observations…

太阳与恒星天体物理 · 物理学 2025-04-23 Namitha Issac , Xing Lu , Tie Liu , Luis A Zapata , Hong-Li Liu , Anandmayee Tej , Yan-Kun Zhang , Wenyu Jiao , Suinan Zhang

Observations of young stellar objects (YSOs) in centimeter bands can probe the continuum emission from growing dust grains, ionized winds, and magnetospheric activity, which are intimately connected to the evolution of protoplanetary disks…

This paper presents a large spectral line and continuum survey of 8 deeply embedded, low-mass protostellar cores using the Submillimeter Array. Each source was observed in high excitation lines of some of the most common molecular species,…

We present 1.4 and 5 GHz observations taken with the Very Large Array (VLA), and observations at 250 GHz obtained with the Max-Planck millimeter bolometer (MAMBO) at the IRAM 30~m telescope, of ten optically selected Quasi-stellar Objects…

We report the detection of outflowing molecular gas in the center of the nearby (z=0.014) massive radio galaxy NGC6328. The radio core of the galaxy, PKS B1718-649, is identified as a Gigahertz Peaked Spectrum source with a compact (2 pc)…

We present Very Large Array (VLA) high resolution observations of the NH3(1,1) and NH3(2,2) molecular transitions towards the high mass star forming region AFGL 437. Our aim was to investigate if the poorly collimated CO molecular outflow…

星系天体物理 · 物理学 2015-06-03 G. Manjarrez , J. F. Gomez , I. de Gregorio-Monsalvo

We have performed a deep [SII]6717/6731 wide field Herbig-Haro (HH) object survey toward the Vela C molecular cloud with a sky coverage of about 2 deg2. In total, 18 new HH objects, HH 1090-1107, are discovered and the two previously known…

太阳与恒星天体物理 · 物理学 2015-06-19 Miaomiao Zhang , Hongchi Wang , Thomas Henning

We present Submillimter Array 1.3 mm waveband continuum and molecular line observations of the HH 80-81 high-mass star-forming region. The dust continuum emission reveals two dominant peaks MM1 and MM2, and line emission from high-density…

星系天体物理 · 物理学 2015-05-13 Keping Qiu , Qizhou Zhang

Presented here are high angular resolution MERLIN 5 GHz (6 cm) continuum observations of the binary proplyd system, LV 1 in the Orion nebula, which consists of proplyd 168--326SE and its binary proplyd companion 168--326NW (separation 0.4…

天体物理学 · 物理学 2016-08-30 M. F. Graham , J. Meaburn , S. T. Garrington , T. J. O'Brien , W. J. Henney , C. R. O'Dell

We present sensitive, multifrequency Very Long Baseline Array (VLBA) images of the nuclear radio sources of NGC 1068. At 5 GHz and 8.4 GHz, the radio continuum source S1, argued to mark the location of the hidden active nucleus, resolves…

天体物理学 · 物理学 2009-11-10 Jack F. Gallimore , Stefi A. Baum , Christopher P. O'Dea

We present observations of ionized gas outflows in eleven z$ =1.39-2.59$ radio-loud quasar host galaxies. Data was taken with the integral field spectrograph (IFS) OSIRIS and the adaptive optics system at the W.M. Keck Observatory targeting…