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相关论文: The Dusty Aftermath of a Rapid Nova: V5579 Sgr

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In this work, optical observations of the nova V5584 Sgr are presented. These observations cover different phases including pre-maximum, early decline, and nebular. The spectra are dominated by hydrogen Balmer, Fe II, and O I lines with…

太阳与恒星天体物理 · 物理学 2024-12-06 Mohit Singh Bisht , A. Raj , F. M. Walter , D. Bisht , Gargi Shaw , K. Belwal , S. Biswas

We present near-infrared spectroscopic and photometric observations of the nova V5579 Sgr during the maximum and early decline phase. The spectra follow the evolution of the nova from peak brightness when the lines had strong P Cygni…

太阳与恒星天体物理 · 物理学 2015-05-28 Ashish Raj , N. M. Ashok , D. P. K. Banerjee

We present optical spectrophotometric and near-infrared (NIR) photometric observations of the nova V2676 Oph covering the period from 2012 March 29 through 2015 May 8. The optical spectra and photometry of the nova have been taken from…

太阳与恒星天体物理 · 物理学 2017-02-08 A. Raj , R. K. Das , F. M. Walter

We present near-infrared and optical observations of moderately fast FeII-class Nova Scuti 2009 (V496 Sct) covering various phases; pre-maximum, early decline and nebular, during the first 10 months after its discovery followed by limited…

太阳与恒星天体物理 · 物理学 2013-03-12 Ashish Raj , N. M. Ashok , D. P. K. Banerjee , U. Munari , P. Valisa , S. Dallaporta

We present near-infrared spectroscopic and photometric observations of nova V5584 Sgr taken during the first 12 days following its discovery on Oct. 26.439 UT 2009. The evolution of the spectra is shown from the initial P Cygni phase to an…

太阳与恒星天体物理 · 物理学 2014-12-25 Ashish Raj , D. P. K. Banerjee , N. M. Ashok , Sang Chul Kim

We present near-infrared and optical observations of the nova V496 Scuti 2009 covering various phases - pre-maximum, early decline and nebular - during the first 10 months of its discovery followed by limited observations in early part of…

太阳与恒星天体物理 · 物理学 2015-06-05 Ashish Raj , N. M. Ashok , D. P. K. Banerjee , U. Munari , P. Valisa , S. Dallaporta

We present results of near-infrared (near-IR) $JHK$ (1.07 - 2.5 $\mu$m) spectroscopic and photometric observations of Nova V476 Scuti (V476 Sct) which was discovered in outburst in 2005 September. The near-IR observations of the nova…

太阳与恒星天体物理 · 物理学 2013-10-17 R. K. Das , D. P. K. Banerjee , N. M. Ashok , Soumen Mondal

Using our previously reported observations, we derive some physical parameters of the moderately fast nova V2676 Ophiuchi 2012 # 1. The best-fit CLOUDY model of the nebular spectrum obtained on 2015 May 8 shows a hot white dwarf source with…

太阳与恒星天体物理 · 物理学 2019-04-10 Ashish Raj , M. Pavana , U. S. Kamath , G. C. Anupama , F. M. Walter

We present spectroscopic and photometric results of Nova V1280 Sco which was discovered in outburst in early 2007 February. The large number of spectra obtained of the object leads to one of the most extensive, near-infrared spectral…

天体物理学 · 物理学 2009-11-13 Ramkrishna Das , Dipankar Banerjee , Nagarhalli Ashok , Olivier Chesneau

We present near-infrared (NIR) observations of Nova V5668 Sgr, discovered in outburst on 2015 March 15.634 UT, between 2d to 107d after outburst. NIR spectral features are used to classify it as a FeII class of nova. The spectra follow the…

太阳与恒星天体物理 · 物理学 2015-10-19 D. P. K. Banerjee , Mudit K. Srivastava , N. M. Ashok , V. Venkataraman

We present near-infrared (1-2.5 micron) JHK photo-spectroscopic results of the unusually slow nova V5558 Sgr (2007). V5558 Sgr showed a slow climb to maximum that lasted for about 60 days and then underwent at least five strong secondary…

太阳与恒星天体物理 · 物理学 2015-06-23 Ramkrishna Das , Dipankar P. K. Banerjee , Arpita Nandi , N M Ashok , Soumen Mondal

We report on the spectral evolution of the enigmatic, very slow nova V5558 Sgr, based on the low-resolution spectra obtained at the Fujii-Bisei Observatory and the Bisei Astronomical Observatory, Japan during a period of 2007 April 6 to…

太阳与恒星天体物理 · 物理学 2015-05-28 Jumpei Tanaka , Daisaku Nogami , Mitsugu Fujii , Kazuya Ayani , Taichi Kato , Hiroyuki Maehara , Seiichiro Kiyota , Kazuhiro Nakajima

We present results obtained from extensive near-infrared spectroscopic and photometric observations of nova V574 Pup during its 2004 outburst. The observations were obtained over four months, starting from 2004 November 25 (four days after…

太阳与恒星天体物理 · 物理学 2010-03-04 Sachindra Naik , Dipankar P. K. Banerjee , N. M. Ashok , R. K. Das

We present results of our dense spectroscopic monitoring of Nova V5668 Sgr. Starting on March 19 in 2015, only a few days after discovery, we have obtained a series of spectra with the TIGRE telescope and its HEROS echelle spectrograph…

We present a detailed spectrophotometric study of nova LMCN 2009-05a, located in the Large Magellanic Cloud (LMC). Photometric observations reveal a dust dip in the optical light curve, classifying it as a D-class nova. Light curve analysis…

太阳与恒星天体物理 · 物理学 2025-08-20 Mohit Singh Bisht , A. Raj , F. M. Walter , Anatoly S. Miroshnichenko , D. Bisht , K. Belwal , Shraddha Biswas

A fraction of classical novae form dust during the early stages of their outbursts. The classical CO nova V5668 Sgr (Nova Sgr. 2015b) underwent a deep photometric minimum about 100 days after outburst that was covered across the spectrum. A…

太阳与恒星天体物理 · 物理学 2018-11-14 Steven N. Shore , N. Paul Kuin , Elena Mason , Ivan De Gennaro Aquino

We report spectroscopic and photometric follow-up of the peculiar nova V5852~Sgr (discovered as OGLE-2015-NOVA-01), which exhibits a combination of features from different nova classes. The photometry shows a flat-topped light curve with…

We present infrared spectroscopic and photometric observations of the nova V2468 Cyg covering the period from 2008 March 13 till 2008 November 11. The JHK spectra of the object have been taken from the Mount Abu Infrared Observatory using…

We present optical ($B$, $V$, $R_{\rm c}$, $I_{\rm c}$ and $y$) and near infrared ($J$, $H$ and $K_{\rm s}$) photometric and spectroscopic observations of a classical nova V1280 Scorpii for five years from 2007 to 2011. Our photometric…

太阳与恒星天体物理 · 物理学 2015-06-04 H. Naito , S. Mizoguchi , A. Arai , A. Tajitsu , S. Narusawa , M. Yamanaka , M. Fujii , T. Iijima , K. Kinugasa , M. Kurita , T. Nagayama , H. Yamaoka , K. Sadakane

Near Infrared (NIR) and optical photometry and spectroscopy are presented for the nova V1831 Aquilae, covering the early decline and dust forming phases during the first $\sim$90 days after its discovery. The nova is highly reddened due to…

太阳与恒星天体物理 · 物理学 2017-11-15 D. P. K. Banerjee , Mudit K. Srivastava , N. M. Ashok , U. Munari , F. -J. Hambsch , G. L. Righetti , A. Maitan
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