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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 results obtained from near-infrared JHK spectroscopic observations of novae V2491 Cyg and V597 Pup in the early declining phases of their 2007 and 2008 outbursts respectively. In both objects, the spectra displayed emission lines…

Astrophysics · Physics 2009-04-21 Sachindra Naik , D. P. K. Banerjee , N. M. Ashok

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…

Solar and Stellar Astrophysics · Physics 2013-10-17 R. K. Das , D. P. K. Banerjee , N. M. Ashok , Soumen Mondal

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…

Solar and Stellar Astrophysics · Physics 2014-12-25 Ashish Raj , D. P. K. Banerjee , N. M. Ashok , Sang Chul Kim

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…

Solar and Stellar Astrophysics · Physics 2015-06-23 Ramkrishna Das , Dipankar P. K. Banerjee , Arpita Nandi , N M Ashok , Soumen Mondal

V5579 Sgr was a fast nova discovered in 2008 April 18.784 UT. We present the optical spectroscopic observations of the nova observed from the Castanet Tolosan, SMARTS and CTIO observatories spanning over 2008 April 23 to 2015 May 11. The…

Solar and Stellar Astrophysics · Physics 2024-08-08 A. Raj , M. S. Bisht , F. M. Walter , R. Pandey , C. E. Woodward , D. E. Harker , D. Bisht , H. P. Singh , A. Agarwal , J. C. Pandey , A. Joshi , K. Belwal , Christian Buil

JHK spectroscopic and photometric observations are reported for the enigmatic, nova-like, variable V445 Puppis which erupted at the end of 2000. The near-IR spectra are hydrogen-deficient and unusually rich in CI lines. The important CI…

Astrophysics · Physics 2009-11-10 N. M. Ashok , D. P. K. Banerjee

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…

Solar and Stellar Astrophysics · Physics 2024-12-06 Mohit Singh Bisht , A. Raj , F. M. Walter , D. Bisht , Gargi Shaw , K. Belwal , S. Biswas

Nova Puppis 2000 (V445 Pup) has been proposed as the first example of a helium nova. Recent optical spectroscopy of V445 Pup at V=19.91 mag obtained with IMACS on the 6.5-m Magellan telescope, shows that the spectrum consists of HeI, [OI],…

Astrophysics · Physics 2007-05-23 Patrick A. Woudt , Danny Steeghs

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…

Solar and Stellar Astrophysics · Physics 2015-06-05 Ashish Raj , N. M. Ashok , D. P. K. Banerjee , U. Munari , P. Valisa , S. Dallaporta

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…

Astrophysics · Physics 2009-11-13 Ramkrishna Das , Dipankar Banerjee , Nagarhalli Ashok , Olivier Chesneau

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…

Solar and Stellar Astrophysics · Physics 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…

Solar and Stellar Astrophysics · Physics 2017-02-08 A. Raj , R. K. Das , F. M. Walter

We present near-infrared spectroscopic and photometric observations of the nova KT Eridani taken during the first 100 days following its discovery in 2009 November. The JHK spectra of the object have been taken from the Mount Abu Infrared…

Solar and Stellar Astrophysics · Physics 2015-06-16 Ashish Raj , D. P. K. Banerjee , N. M. Ashok

We present near-IR observations of the 2010 outburst of U Sco. JHK photometry is presented on ten consecutive days starting from 0.59 days after outburst. Such photometry can gainfully be integrated into a larger database of other…

Solar and Stellar Astrophysics · Physics 2015-05-19 D. P. K. Banerjee , R. K. Das , N. M. Ashok , M. T. Rushton , S. P. S. Eyres , M. P. Maxwell , H. L. Worters , A. Evans , B. E. Schaefer

We present optical and near-infrared spectral evolution of the Galactic nova V5114 Sgr (2004) during few months after the outburst. We use multi-band photometry and line intensities derived from spectroscopy to put constrains on the…

Near infrared (NIR) 0.9--2.5$\mu$m spectra of the remarkable recurrent nova M31N 2008-12a were obtained on days 6.3 and 10.3 after discovery of its 2024 outburst, and are the first NIR spectra of this object. The only prominent line seen in…

Solar and Stellar Astrophysics · Physics 2025-05-16 D. P. K. Banerjee , T. R. Geballe , A. Evans , C. E. Woodward , K. L. Page , S. Starrfield

We present near-infrared (1 - 2.5 micron) spectroscopic and photometric results of Nova V2615 Ophiuchi which was discovered in outburst in 2007 March. Our observations span a period of ~ 80 days starting from 2007 March 28 when the nova was…

Solar and Stellar Astrophysics · Physics 2015-05-13 Ramkrishna Das , Dipankar P. K. Banerjee , N. M. Ashok

Optical and near-infrared spectroscopic observations of the fast nova V1494 Aquilae 1999 #2 covering various phases -- early decline, transition and nebular -- during the first eighteen months of its post-outburst evolution are presented in…

Astrophysics · Physics 2009-11-13 U. S. Kamath , G. C. Anupama , N. M. Ashok , Y. D. Mayya , D. K. Sahu

We present near-IR photo-spectroscopy in the H and K bands of the 2006 outburst of the recurrent nova RS Ophiuchi (RS Oph). The observations cover the period between 1 to 94 days after the eruption. The near IR light curve and an extensive…

Solar and Stellar Astrophysics · Physics 2015-05-13 Dipankar Banerjee , Ramkrishna Das , N. M. Ashok
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