Search Results - "Ayani, Kazuya"
-
1
Spectroscopic observations of V455 Andromedae superoutburst in 2007: The most exotic spectral features in dwarf nova outbursts
Published in Publications of the Astronomical Society of Japan (04-04-2022)“…Abstract We present our spectroscopic observations of V455 Andromedae during the 2007 superoutburst. Our observations cover this superoutburst from around the…”
Get full text
Journal Article -
2
On the Rebrightenings of Classical Novae during the Early Phase
Published in Publications of the Astronomical Society of Japan (25-02-2011)“…We report on the spectral evolution of 6 classical novae (V1186 Sco, V2540 Oph, V4745 Sgr, V5113 Sgr, V458 Vul, and V378 Ser), based on low-resolution spectra…”
Get full text
Journal Article -
3
Spectral Evolution of the Unusual Slow Nova V5558 Sagittarii
Published in Publications of the Astronomical Society of Japan (25-08-2011)“…We report on the spectral evolution of the enigmatic, very slow nova V5558 Sgr, based on low-resolution spectra obtained at the Fujii-Bisei Observatory and the…”
Get full text
Journal Article -
4
Spiral Structure in WZ Sagittae around the 2001 Outburst Maximum
Published in Publications of the Astronomical Society of Japan (25-02-2002)“…Intermediate-resolution phase-resolved spectra of WZ Sge were obtained on five consecutive nights (July 23–27) covering the initial stage of the 2001…”
Get full text
Journal Article -
5
Superhump Evolution in the Ultrashort Period Dwarf Nova 1RXS J232953.9+062814
Published in Publications of the Astronomical Society of Japan (25-08-2002)“…We report on the evolution of superhumps and late superhumps in an ultrashort period dwarf nova, 1RXS J232953.9 $+$ 062814, during the superoutburst in 2001…”
Get full text
Journal Article -
6
Discovery of a Dwarf Nova Breaking the Standard Sequence of Compact Binary Evolution
Published in Publications of the Astronomical Society of Japan (25-04-2002)“…We revealed that the dwarf nova 1RXS J232953.9+062814 is an SU UMa-type system with a superhump period of $ 66.774\pm 0.010 \,\mathrm{min}$ . The short period…”
Get full text
Journal Article -
7
THE ERUPTION OF THE CANDIDATE YOUNG STAR ASASSN-15QI
Published in The Astrophysical journal (10-11-2016)“…Outbursts on young stars are usually interpreted as accretion bursts caused by instabilities in the disk or the star–disk connection. However, some…”
Get full text
Journal Article -
8
Discovery of a Compact X-Ray Source inside the Cygnus Loop
Published in Publications of the Astronomical Society of Japan (01-10-1998)“…We detected a compact X-ray source inside the Cygnus Loop during observations of the whole Cygnus Loop with the ASCA GIS. The source intensity is 0.11 c s−1…”
Get full text
Journal Article -
9
THE ERUPTION OF THE CANDIDATE YOUNG STAR ASASSN-15QI
Published in The Astrophysical journal (10-11-2016)“…ABSTRACT Outbursts on young stars are usually interpreted as accretion bursts caused by instabilities in the disk or the star-disk connection. However, some…”
Get full text
Journal Article -
10
Spectroscopic Observations of V455 Andromedae Superoutburst in 2007: the Most Exotic Spectral Features in Dwarf Nova Outbursts
Published 22-01-2022“…We present our spectroscopic observations of V455 Andromedae during the 2007 superoutburst. Our observations cover this superoutburst from around the optical…”
Get full text
Journal Article -
11
Moderate Dispersion Spectra of NH2 in Comet Hale-Bopp: Analysis of Population Distribution in $\widetilde X^{2} \textrm B_{1}(0,0,0)$ State of NH 2
Published in Publications of the Astronomical Society of Japan (01-10-2000)“…Abstract We carried out moderate-dispersion spectroscopic observations of comet Hale-Bopp (C/1995O1) on 1997 February 25, in order to study the fine structure…”
Get full text
Journal Article -
12
Spectroscopic Observation of Comet P/de Vico: Comparison with P/Halley and P/Brorsen-Metcalf
Published in Publications of the Astronomical Society of Japan (25-06-1998)“…A spectroscopic observation of Comet P/de Vico in the visible region was made at Bisei Astronomical Observatory on 1995 October 11. The obtained spectrum…”
Get full text
Journal Article -
13
On the Rebrightenings of Classical Novae during the Early Phase
Published 27-10-2010“…We report on the spectral evolution of 6 classical novae, V1186 Sco, V2540 Oph, V4745 Sgr, V5113 Sgr, V458 Vul, and V378 Ser, based on the low-resolution…”
Get full text
Journal Article -
14
The Eruption of the Candidate Young Star ASASSN-15qi
Published 15-08-2016“…Outbursts on young stars are usually interpreted as accretion bursts caused by instabilities in the disk or the star-disk connection. However, some…”
Get full text
Journal Article -
15
Spectral Evolution of the Unusual Slow Nova V5558 Sgr
Published 09-05-2011“…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…”
Get full text
Journal Article -
16
SDSS J102146.44+234926.3: New WZ Sge-type dwarf nova
Published 10-04-2007“…2007IBVS.5763...1G We report CCD photometry and spectroscopy during 2006 outburst of the dwarf nova SDSS J102146.44+234926.3 (SDSS J1021). The photographic…”
Get full text
Journal Article -
17
Spiral Structure in WZ Sagittae around the 2001 Outburst Maximum
Published 16-12-2001“…Intermediate resolution phase-resolved spectra of WZ Sge were obtained on five consecutive nights (July 23 -- 27) covering the initial stage of the 2001…”
Get full text
Journal Article