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Browsing by Subject "Star formation"

Browsing by Subject "Star formation"

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  • Balloon-borne far-infrared mapping of galactic star forming regions 
    Das, B; Ghosh, S. K; Rengarajan, T. N; Verma, R. P; Iyengar, K. V. K; Tandon, S. N (Astronomical Society of India, 1993)
    Large angular areas (greater than 500 sq arcmin each) covering the three Galactic star forming regions (NGC 2024, OMC-1/OMC-2, and IRAS 06058 + 2138 and its neighborhood) have been mapped in two FIR bands (58 and 150 ...
  • CCD observations of the H-alpha line in late G and K supergiants and their interpretation 
    Mallik, S. G. V (American Astronomical Society, 1993-01-01)
    CCD echelle spectra of the H-alpha line at 6563 A have been obtained for a sample of 30 G and K supergiants with a spectral resolution of about 0.24 A. The data clearly indicate that the observed H-alpha profile is a deep ...
  • Cloud–Cloud Collision and Cluster Formation in the W5-NW Complex 
    Issac, Namitha; Saha, Anindya; Choudhary, Saanika; Chaudhary, Aakash; Tej, Anandmayee; Liu, Hong-Li; Liu, Tie; Maheswar, G (American Astronomical Society, 2024-04-01)
    We present a detailed structural and gas kinematic study of the star-forming complex W5-NW. A cloud–cloud collision scenario unravels with evidence of collision-induced star and cluster formation. Various signatures of ...
  • A comparison of the UV and HI properties of the extended UV (XUV) disk galaxies NGC 2541, NGC 5832 and ESO406-042 
    Mousumi Das; Yadav, J; Patra, N; Dwarakanath, K. S; McGaugh, S. S; Schombert, J; Rahna, P. T; Murthy, J (Indian Academy of Sciences, 2021-10)
    We present a UV study of 3 extended UV (XUV) galaxies that we have observed with the UVIT and the GMRT. XUV galaxies show filamentary or diffuse star formation well beyond their optical disks, in regions where the disk ...
  • A Comprehensive Study of the Young Cluster IRAS 05100+3723: Properties, Surrounding Interstellar Matter, and Associated Star Formation 
    Yadav, R. K; Samal, M. R; Semenko, E; Zavagno, A; Vaddi, S; Prajapati, P; Ojha, D. K; Pandey, A. K; Ridsdill-Smith, M; Jose, J; Patra, S; Dutta, S; Irawati, P; Sharma, S; Sahu, D. K; Panwar, N (American Astronomical Society, 2022-02-10)
    We present a comprehensive multiwavelength investigation of a likely massive young cluster "IRAS 05100+3723" and its environment with the aim to understand its formation history and feedback effects. We find that IRAS ...
  • Effects of dark matter on the upper bound mass of neutron stars 
    Kumar, S. S; Kenath, A; Sivaram, C (Elsevier B.V, 2020-05)
    Observations have indicated that we do not see neutron stars (NS) of mass near the theoretical upper limit as predicted. Here we invoke the role of dark matter (DM) particles in star formation, and their role in lowering ...
  • Enhanced star formation in the cometary globules of the GUM nebula 
    Bhatt, H. C (Royal Astronomical Society, 1993-06-01)
    Evidence for an enhanced rate of star formation in the cometary globules of the Gum nebula is presented. The IRAS Point Source Catalog has been searched for sources with spectral energy distributions characteristic of young ...
  • Exploring Neutral Hydrogen in Radio MOlecular Hydrogen Emission Galaxies (MOHEGs) and Prospects with the SKA 
    Wagh, Sai; Pandey-Pommier, Mamta; Roy, Nirupam; Rashid, Md; Marcowith, Alexandre; Muthumariappan, C; Ramya, S; Roy, Subhashis; Guiderdoni, Bruno (American Astronomical Society, 2024-03-10)
    Empirical studies of cold gas content are essential for comprehending the star formation activities and evolution in galaxies. However, it is not straightforward to understand these processes because they depend on various ...
  • Infrared spectral energy distribution of four star forming regions 
    Karnik, A. D; Ghosh, S. K; Rengarajan, T. N; Tandon, S. N; Verma, R. P (Astronomical Society of India, 1999)
    Star forming regions associated with IRAS 19181+1349, 20255+3712, 20178+4046 and 10049+5657 have been mapped simultaneously in two far infrared bands (λeff ~ 130 and 210 µm), using TIFR 1m balloon borne telescope with ...
  • Intracluster extinction in young open star clusters 
    Sagar, R; Qian, Z. Y (Astronomical Society of India, 1993)
    An analysis of near-infrared data in combination with optical observations, indicates a normal interstellar extinction law around hot O and B stars at wavelengths greater than or = 0.9 micrometers. At shorter wavelengths, ...
  • The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2 
    Hwang, Jihye; Kim, Jongsoo; Pattle, Kate; Lee, Chang Won; Koch, Patrick M; Johnstone, Doug; Tomisaka, Kohji; Whitworth, Anthony; Furuya, Ray S; Kang, Ji-hyun; Lyo, A-Ran; Duan, Yan; Gu, Qilao; Law, Chi-Yan; Kobayashi, Masato I. N; Li, Dalei; Li, Di; Li, Guangxing; Li, Hua-bai; Liu, Tie; Lu, Xing; Chrysostomou, Antonio; Qian, Lei; Wang, Hongchi; Wu, Jintai; Xie, Jinjin; Nagata, Tetsuya; Yuan, Jinghua; Zhang, Chuan-Peng; Zhang, Guoyin; Zhang, Yapeng; Zhou, Jianjun; Debattista, Victor; Zhu, Lei; Berry, David; Friberg, Per; Graves, Sarah; Liu, Junhao; Nakamura, Fumitaka; Mairs, Steve; Parsons, Harriet; Rawlings, Mark; Doi, Yasuo; Eden, David; Hayashi, Saeko; Hull, Charles L. H; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Iwasaki, Kazunari; Kataoka, Akimasa; Nakanishi, Hiroyuki; Pyo, Tae-Soo; Saito, Hiro; Seta, Masumichi; Park, Geumsook; Shimajiri, Yoshito; Chung, Eun Jung; Shinnaga, Hiroko; Tsukamoto, Yusuke; Zenko, Tetsuya; Chen, Huei-Ru Vivien; Duan, Hao-Yuan; Fanciullo, Lapo; Kemper, Francisca; Lee, Chin-Fei; Eyres, Stewart; Lin, Sheng-Jun; Liu, Sheng-Yuan; Arzoumanian, Doris; Ohashi, Nagayoshi; Rao, Ramprasad; Tang, Ya-Wen; Wang, Jia-Wei; Yang, Meng-Zhe; Yen, Hsi-Wei; Bourke, Tyler L; Falle, Sam; Fuller, Gary; Gledhill, Tim; Greaves, Jane; Griffin, Matt; Choi, Minho; Hatchell, Jennifer; Karoly, Janik; Kirk, Jason; Konyves, Vera; Kwon, Woojin; Longmore, Steven; van Loo, Sven; de Looze, Ilse; Peretto, Nicolas; Priestley, Felix; Choi, Youngwoo; Rawlings, Jonathan; Retter, Brendan; Richer, John; Rigby, Andrew; Savini, Giorgio; Kim, Shinyoung; Scaife, Anna; Viti, Serena; Diep, Pham Ngoc; Ngoc, Nguyen Bich; Choi, Yunhee; Tram, Le Ngoc; Andre, Philippe; Coude, Simon; Dowell, C. Darren; Friesen, Rachel; Robitaille, Jean-Francois; Tamura, Motohide; Kwon, Jungmi; Archana, Soam; Han, Ilseung; Jeong, Il-Gyo; Hoang, Thiem; Kim, Kyoung Hee; Onaka, Takashi; Eswaraiah, Chakali; Ward-Thompson, Derek; Liu, Hong-Li; Tang, Xindi; Chen, Wen Ping; Matsumura, Masafumi; Hoang, Thuong Duc; Kang, Miju; Chen, Zhiwei; Le Gouellec, Valentin J. M; Kirchschlager, Florian; Poidevin, Frederick; Bastien, Pierre; Qiu, Keping; Hasegawa, Tetsuo; Lai, Shih-Ping; Byun, Do-Young; Cho, Jungyeon; Kim, Hyosung; Kim, Kee-Tae; Lee, Jeong-Eun; Lee, Sang-Sung; Lee, Yong-Hee; Kawabata, Koji; Lee, Hyeseung; Kim, Mi-Ryang; Yoo, Hyunju; Yun, Hyeong-Sik; Chen, Mike; Di Francesco, James; Fiege, Jason; Fissel, Laura M; Franzmann, Erica; Houde, Martin; Kim, Gwanjeong; Lacaille, Kevin; Matthews, Brenda; Sadavoy, Sarah; Moriarty-Schieven, Gerald; Tahani, Mehrnoosh; Ching, Tao-Chung; Dai, Y. Sophia (American Astronomical Society, 2022-12-10)
    We present and analyze observations of polarized dust emission at 850 μm toward the central 1 × 1 pc hubfilament structure of Monoceros R2 (Mon R2). The data are obtained with SCUBA-2/POL-2 on the James Clerk Maxwell ...
  • The Local Stellar Population of Slow Nova Regions in the SMC 
    Subramaniam, A; Anupama, G. C (Astronomical Society of India, 2003)
  • The Magnetic Field in the Milky Way Filamentary Bone G47 
    Stephens, Ian W; Myers, Philip C; Zucker, Catherine; Jackson, James M; Andersson, B.-G; Smith, Rowan; Archana Soam; Battersby, Cara; Sanhueza, Patricio; Hogge, Taylor; Smith, Howard A; Novak, Giles; Sadavoy, Sarah; Pillai, Thushara G.S; Li, Zhi-Yun; Looney, Leslie W; Sugitani, Koji; Coude, Simon; Guzman, Andres; Goodman, Alyssa; Kusune, Takayoshi; Santos, Fabio P; Zuckerman, Leah; Encalada, Frankie (IOP Publishing, 2022-02-10)
    Star formation primarily occurs in filaments where magnetic fields are expected to be dynamically important. The largest and densest filaments trace the spiral structure within galaxies. Over a dozen of these dense (∼104 ...
  • The most distant radio galaxies 
    Kapahi, V. K (Astronomical Society of India, 1992)
    The techniques and samples being employed to find radio galaxies at high redshifts are outlined. Results obtained from the study of high-redshift galaxies, as well as attempts to elucidate this phenomenon are discussed. ...
  • NGC 7419: a young open cluster with a number of very young intermediate mass pre-MS stars 
    Subramaniam, A; Mathew, B; Bhatt, B. C; Ramya, S (Blackwell Publishing, 2006-06)
    We present a photometric and spectroscopic study of the young open cluster NGC 7419, which is known to host a large number of classical Be stars for reasons not well understood. Based on CCD photometric observations of 327 ...
  • On the propensity of the formation of massive clumps via fragmentation of driven shells 
    Anathpindika, S (Elsevier B.V., 2011-08)
    Early type massive stars drive thin, dense shells whose edges often show evidence of star-formation. The possibility of fragmentation of these shells, leading to the formation of putative star-forming clumps is examined ...
  • On the Scarcity of Dense Cores (n>105 cm−3 ) in High-latitude Planck Galactic Cold Clumps 
    Xu, Fengwei; Wang, Ke; Liu, Tie; Eden, David; Liu, Xunchuan; Juvela, Mika; He, Jinhua; Johnstone, Doug; Goldsmith, Paul; Garay, Guido; Wu, Yuefang; Archana Soam; Traficante, Alessio; Ristorcelli, Isabelle; Falgarone, Edith; Chen, Huei-Ru Vivien; Hirano, Naomi; Doi, Yasuo; Kwon, Woojin; White, Glenn J; Whitworth, Anthony; Sanhueza, Patricio; Rawlings, Mark G; Alina, Dana; Ren, Zhiyuan; Lee, Chang Won; Tatematsu, Kenichi; Zhang, Chuan-Peng; Zhou, Jianjun; Lai, Shih-Ping; Ward-Thompson, Derek; Liu, Sheng-Yuan; Gu, Qilao; Chakali, Eswaraiah; Zhu, Lei; Mardones, Diego; Toth, L. Viktor (American Astronomical Society, 2024-03-01)
    High-latitude (|b| > 30°) molecular clouds have virial parameters that exceed 1, but whether these clouds can form stars has not been studied systematically. Using JCMT SCUBA-2 archival data, we surveyed 70 fields that ...
  • Open Star Clusters: Star Formation and Structure 
    Pandey, A. K (Astronomical Society of India, 2003)
    Observational evidences indicate that the formation of open star clusters has been efficient throughout the life of our Galaxy. As a consequence, we find open clusters with ages ranging from a few Myr to few Gyr. This makes ...
  • Planet formation in sun-like systems 
    Bhatt, H. C (Astronomical Society of India, 1999)
    Recent discoveries of substellar and planetary-mass objects in orbit around other stars represent the most remarkable progress achieved in the search for extrasolar planetary systems. The evidence for their existence is ...
  • The Role of Filamentary Structures in the Formation of Two Dense Cores, L1544 and L694-2 
    Kim, Shinyoung; Lee, Chang Won; Tafalla, Mario; Maheswar, G; Caselli, Paola; Myers, Philip C; Chung, Eun Jung; Li, Shanghuo (American Astronomical Society, 2022-12-01)
    We present mapping results of two prestellar cores, L1544 and L694-2, embedded in filamentary clouds in C18O (3–2), 13CO (3–2), 12CO (3–2), HCO+ (4–3), and H13CO+ (4–3) lines with the James Clerk Maxwell Telescope to examine ...

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