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Abridged. The bright-rimmed cloud IC1396N hosts CO, H$_2$, and Herbig-Haro outflows powered by millimetre compact sources. We aim to characterise the kinematics and physical conditions of the H$_2$ emission features spread over IC1396N,…

星系天体物理 · 物理学 2022-08-10 Fabrizio Massi , Rosario López , Maria T. Beltrán , Robert Estalella , Josep M. Girart

We present in this paper a comprehensive study of the H II region IC 1396 and its star formation activity, in which multi-wavelength data ranging from the optical to the near- and far-infrared were employed. The surface density distribution…

太阳与恒星天体物理 · 物理学 2015-06-12 Ya Fang Huang , Jin Zeng Li

We have mapped in the 2.7 mm continuum and 12CO with the PdBI the IR-dark "tail" that crosses the IC 1396N globule from south to north, and is the most extincted part of this cloud. These observations have allowed us to distinguish all…

星系天体物理 · 物理学 2015-06-05 M. T. Beltran , F. Massi , F. Fontani , C. Codella , R. Lopez

The bright-rimmed cloud IC 1396N is believed to host one of the few known cases where two bipolar CO outflows driven by young stellar objects actually collide. The CO outflows are traced by chains of knots of H_2 emission, with enhanced…

太阳与恒星天体物理 · 物理学 2022-05-25 Rosario López , Robert Estalella , María T. Beltrán , Fabricio Massi , José A. Acosta-Pulido , Josep M. Girart

We investigate the dynamical and physical structures of bright-rimmed clouds (BRCs) in a nearby HII region. We focused on carbon- and oxygen-bearing species that trace photon-dominated regions (PDRs) and warm molecular cloud surfaces in…

We present centimeter and millimeter observations of gas and dust around IRAS 21391+5802, an intermediate-mass source embedded in the core of IC 1396N. Continuum observations from 3.6 cm to 1.2 mm are used to study the embedded objects and…

天体物理学 · 物理学 2009-11-07 Maria T. Beltran , Jose M. Girart , Robert Estalella , Paul T. P. Ho , Aina Palau

We have discovered 12 new molecular hydrogen emission-line objects (MHOs) in the vicinity of the candidate massive young stellar object Mol 121, in addition to five that were previously known. H2 2.12-micron/H2 2.25-micron flux ratios…

星系天体物理 · 物理学 2015-06-12 G. Wolf-Chase , K. Arvidsson , M. Smutko , R. Sherman

This paper presents and examines new near-infrared integral field observations of the three so-called 'embedded star clusters' located in the nuclear region of NGC1365. Adaptive-optics- corrected K-band data cubes were obtained with the…

星系天体物理 · 物理学 2015-06-05 Emmanuel Galliano , Markus Kissler-Patig , Danielle Alloin , Eduardo Telles

We have observed the IC1396W globule in a narrow band filter centred on the 1-0 S(1) line of molecular hydrogen and in the J, H, K' broad-band filters. Three molecular hydrogen outflows could be identified by means of H2 emission. The…

天体物理学 · 物理学 2009-11-07 D. Froebrich , A. Scholz

We report H$_2$O maser line observations of the bright-rimmed globule IC 1396 N using a ground-space interferometer with the 10-m RadioAstron radio telescope as the space-based element. The source was not detected on projected baselines…

星系天体物理 · 物理学 2017-06-21 O. S. Bayandina , I. E. Val'tts , S. E. Kurtz , G. M. Rudnitskij , A. V. Alakoz

The process of massive star formation is tightly connected with the appearance of molecular outflows, which interact with surrounding interstellar medium and can be used as a proxy to study the accretion process of material onto forming…

At present there are many studies concerning jets towards low-mass young stellar objects, while equivalent studies towards massive or intermediate-mass young stellar objects are scarce. In a previous study, we found highly misaligned…

星系天体物理 · 物理学 2016-10-05 S. Paron , C. Fariña , M. E. Ortega

We present the results of the first detailed millimeter and submillimeter molecular line survey of bright rimmed clouds, observed at FCRAO in the CO (J=1-0), C18O (J=1-0), HCO+ (J=1-0), H13CO+ (J=1-0), and N2H+ (J=1-0) transitions, and at…

天体物理学 · 物理学 2009-11-07 Christopher H. De Vries , Gopal Narayanan , Ronald L. Snell

To characterize a bright-rimmed cloud embedded in the HII region Sh2-48 searching for evidence of triggered star formation. We carried out observations towards a region of 2'x2' centered at RA=18h 22m 11.39s, dec.=-14deg 35m 24.81s (J2000)…

星系天体物理 · 物理学 2015-06-16 M. E. Ortega , S. Paron , E. Giacani , M. Rubio , G. Dubner

We present a wide-field survey of the young open cluster IC348 for molecular H2 outflows. Outflow activity is only found at its south-western limit, where a new subcluster of embedded sources is in an early phase of its formation. If the…

天体物理学 · 物理学 2009-11-07 J. Eislöffel , D. Froebrich , T. Stanke , M. J. McCaughrean

The luminous Young Stellar Object (YSO) IRAS 07422-2001 is studied in the infrared. We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from…

太阳与恒星天体物理 · 物理学 2015-06-04 Watson P. Varricatt

We have observed the central region of the IR-dark cloud filament associated with IRAS 18507+0121 at millimeter wavelengths in CO(1-0), 13CO(1-0), and C18O(1-0) line emission and with the Spitzer Space Telescope at mid-IR wavelengths. Five…

Massive stars form deeply embedded in their parental clouds, making it challenging to directly observe these stars and their immediate environments. It is known that accretion and ejection processes are intrinsically related, thus observing…

太阳与恒星天体物理 · 物理学 2022-07-20 A. R. Costa Silva , R. Fedriani , J. C. Tan , A. Caratti o Garatti , S. Ramsay , V. Rosero , G. Cosentino , P. Gorai , S. Leurini

We studied a small comet-shape reflection nebula, located in the dark cloud SL 4 in the Vela Molecular Ridge cloud C, known as BBWo 192E (GM 1-23), and a young infrared cluster embedded into the nebula, for the evidences of recent star…

太阳与恒星天体物理 · 物理学 2020-10-07 T. Yu. Magakian , T. A. Movsessian , H. R. Andreasyan , J. Bally , A. S. Rastorguev

We present Spitzer Space Telescope IRAC and MIPS observations toward a sample of nine high-mass star forming regions at a distance of around 2 kpc. Based on IRAC and MIPS 24 $\mu$m photometric results and 2MASS JHKs data, we carry out a…

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