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相关论文: A possible sequential star formation in the giant …

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We perform a multiwavelength study toward the SNR G18.1-0.1 and nearby several HII regions (infrared dust bubbles N21 and N22, and the HII regions G018.149-00.283 and G18.197-00.181). Our goal is to provide observational evidence supporting…

星系天体物理 · 物理学 2015-06-15 S. Paron , W. Weidmann , M. E. Ortega , J. F. Albacete Colombo , A. Pichel

We investigate the star formation activity in the molecular complex associated with the Galactic HII region Sh2-90, using radio-continuum maps obtained at 1280 MHz and 610 MHz, Herschel Hi-GAL observations at 70 -- 500 microns, and deep…

太阳与恒星天体物理 · 物理学 2015-06-19 M. R. Samal , A. Zavagno , L. Deharveng , S. Molinari , D. K. Ojha , D. Paradis , J. Tigé , A. K. Pandey , D. Russeil

Clouds more massive than about $10^5$ M$_\odot$ are potential sites of massive cluster formation. Studying the properties of such clouds in the early stages of their evolution offers an opportunity to test various cluster formation…

星系天体物理 · 物理学 2023-03-10 Vineet Rawat , M. R. Samal , D. L. Walker , A. Zavagno , A. Tej , G. Marton , D. K. Ojha , Davide Elia , W. P. Chen , J. Jose , C Eswaraiah

A large number of intermediate-age (~1-2-Gyr old) globular clusters (GCs) in the Large and the Small Magellanic Cloud (MC) exhibit either bimodal or extended main-sequence (MS) turn off and dual red clump. Moreover, recent papers have shown…

太阳与恒星天体物理 · 物理学 2015-11-04 A. P. Milone

We report the first high-resolution (sub-arcminute) large-scale mapping $^{12}$CO and $^{13}$CO observations of the molecular clouds associated with the giant outer Galaxy HII region CTB~102 (KR 1). These observations were made using a…

星系天体物理 · 物理学 2019-05-08 Brandon Marshall , Sung-ju Kang , C. R. Kerton , Youngsik Kim , Minho Choi , Miju Kang

We present a multi-wavelength study of the Planck cold clump G181.84+0.31, which is located at the northern end of the extended filamentary structure S242. We have extracted 9 compact dense cores from the SCUBA-2 850 um map, and we have…

太阳与恒星天体物理 · 物理学 2019-05-30 Lixia Yuan , Ming Zhu , Tie Liu , Jinghua Yuan , Yuefang Wu , Kee-Tae Kim , Ke Wang , Chenlin Zhou , Ken'ichi Tatematsu , Nario Kuno

Globular clusters show abundance variations for light elements that are not yet well understood. The preferred explanation involves a self-enrichment scenario, with two subsequent generations of stars. Observations of main sequence stars…

星系天体物理 · 物理学 2015-05-19 E. Pancino , M. Rejkuba , M. Zoccali , R. Carrera

We present millimetre-line imaging of the Galactic HII region Sh 104. We show that it is surrounded by a ring of molecular gas and dust. Four large molecular condensations are regularly spaced around the ring. These condensations are…

天体物理学 · 物理学 2009-11-10 L. Deharveng , B. Lefloch , A. Zavagno , J. Caplan , A. P. Whitworth , D. Nadeau , S. Martin

We present a detailed near-infrared study of an embedded cluster located in the hub of the giant molecular cloud G148.24+00.41 of mass $\sim$10$^5$ $M_\odot$, with the TANSPEC instrument mounted on the 3.6 m Devasthal Optical Telescope. The…

星系天体物理 · 物理学 2024-08-26 Vineet Rawat , M. R. Samal , D. K. Ojha , Brajesh Kumar , Saurabh Sharma , J. Jose , Ram Sagar , R. K. Yadav

A high number of embedded clusters is found in the Galaxy. Depending on the formation scenario, most of them can evolve to unbounded groups that are dissolved within a few tens of Myr. A systematic study of young stellar clusters showing…

星系天体物理 · 物理学 2015-06-11 T. Santos-Silva , J. Gregorio-Hetem

We investigate star formation at very early evolutionary phases in five massive clouds in the inner 500 pc of the Galaxy, the Central Molecular Zone. Using interferometer observations of H$_2$O masers and ultra-compact H II regions, we find…

We present a multi-wavelength study of the Sh2-138, a Galactic compact H II region. The data comprise of optical and near-infrared (NIR) photometric and spectroscopic observations from the 2-m Himalayan Chandra Telescope, radio observations…

太阳与恒星天体物理 · 物理学 2015-11-04 T. Baug , D. K. Ojha , L. K. Dewangan , J. P. Ninan , B. C. Bhatt , S. K. Ghosh , K. K. Mallick

We investigate the star formation occurring in the Planck Galactic cold clump PGCC 120.69+2.66. Near-infrared JHKs images and K-band spectroscopy obtained with NOTCam at the Nordic Optical Telescope complemented with archive data are used…

星系天体物理 · 物理学 2024-11-08 Anlaug Amanda Djupvik , João L. Yun , Fernando Comerón

We investigate the young (proto)stellar population in NGC 2023 and the L 1630 molecular cloud bordering the HII region IC 434, using Spitzer IRAC and MIPS archive data, JCMT SCUBA imaging and spectroscopy as well as targeted BIMA…

星系天体物理 · 物理学 2015-05-14 B. Mookerjea , G. Sandell , T. H. Jarrett , J. P. McMullin

We analyze the embedded stellar content in the vicinity of the W3/W4/W5 HII regions using the FCRAO Outer Galaxy 12CO(J=1-0) Survey, the IRAS Point Source Catalog, published radio continuum surveys, and new near-infrared and molecular line…

天体物理学 · 物理学 2009-10-31 John M. Carpenter , Mark H. Heyer , Ronald L. Snell

A multi-wavelength analysis of the large Galactic infrared bubble N 24 is has been presented in this paper in order to investigate the molecular and star formation environment around expanding HII regions. Using archival data from Herschel…

We present deep, wide-field J, H and Ks images taken with IRIS2 on the Anglo Australian Telescope, towards the massive star formation region G305.2+0.2. Combined with 3.6, 4.5, 5.8 and 8.0 micron data from the GLIMPSE survey on the Spitzer…

天体物理学 · 物理学 2008-11-26 S. N. Longmore , M. Maercker , S. Ramstedt , M. G. Burton

We present near-infrared spectroscopy and 1 mm line and continuum observations of a recently identified site of high mass star formation likely to be located in the Central Molecular Zone near Sgr C. Located on the outskirts of the massive…

We report the properties of a new young double stellar cluster in the region towards IRAS 07141-0920 contained in the HII region Sh2-294. High-resolution optical UBVRI and Halpha images, near-infrared JHKs and H2 filter images were used to…

天体物理学 · 物理学 2009-11-13 Joao L. Yun , Anlaug Amanda Djupvik , Antonio J. Delgado , Emilio J. Alfaro

Using the PMO-13.7 m millimeter telescope at Delingha in China, we have conducted a large-scale simultaneous survey of $^{12}$CO, $^{13}$CO, and C$^{18}$O $J=1-0$ emission toward the sky region centered at $l$=$209.7^\circ$,…

星系天体物理 · 物理学 2020-09-15 Chong Li , Hongchi Wang , Miaomiao Zhang , Yuehui Ma , Lianghao Lin