A spatially resolved 'inside-out' outburst of IP Pegasi

N. A. Webb; T. Naylor; Z. Ioannou; W. J. Worraker; J. Stull; A. Allan; R. Fried; N. D. James; D. Strange

doi:10.1046/j.1365-8711.1999.03002.x

A spatially resolved 'inside-out' outburst of IP Pegasi

N. A. Webb^*, T. Naylor, Z. Ioannou, W. J. Worraker, J. Stull, A. Allan, R. Fried, N. D. James, D. Strange

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We present a comprehensive photometric data set taken over the entire outburst of the eclipsing dwarf nova IP Peg in 1997 September/October. Analysis of the light curves taken over the long rise to the peak-of-outburst shows conclusively that the outburst started near the centre of the disc and moved outwards. This is the first data set that spatially resolves such an outburst. The data set is consistent with the idea that long rise times are indicative of such 'inside-out' outbursts. We show how the thickness and the radius of the disc, along with the mass transfer rate, change over the whole outburst. In addition, we show evidence of the secondary and the irradiation thereof. We discuss the possibility of spiral shocks in the disc; however, we find no conclusive evidence of their existence in this data set.

Original language	English
Pages (from-to)	407-413
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	310
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.1999.03002.x
Publication status	Published - Dec 1 1999
Externally published	Yes

Keywords

Accretion, accretion discs
Binaries: eclipsing
Infrared: stars
Novae, cataclysmic variables
Stars: individual: IP Peg
White dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1046/j.1365-8711.1999.03002.x

Cite this

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title = "A spatially resolved 'inside-out' outburst of IP Pegasi",

abstract = "We present a comprehensive photometric data set taken over the entire outburst of the eclipsing dwarf nova IP Peg in 1997 September/October. Analysis of the light curves taken over the long rise to the peak-of-outburst shows conclusively that the outburst started near the centre of the disc and moved outwards. This is the first data set that spatially resolves such an outburst. The data set is consistent with the idea that long rise times are indicative of such 'inside-out' outbursts. We show how the thickness and the radius of the disc, along with the mass transfer rate, change over the whole outburst. In addition, we show evidence of the secondary and the irradiation thereof. We discuss the possibility of spiral shocks in the disc; however, we find no conclusive evidence of their existence in this data set.",

keywords = "Accretion, accretion discs, Binaries: eclipsing, Infrared: stars, Novae, cataclysmic variables, Stars: individual: IP Peg, White dwarfs",

author = "Webb, {N. A.} and T. Naylor and Z. Ioannou and Worraker, {W. J.} and J. Stull and A. Allan and R. Fried and James, {N. D.} and D. Strange",

year = "1999",

month = dec,

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doi = "10.1046/j.1365-8711.1999.03002.x",

language = "English",

volume = "310",

pages = "407--413",

journal = "Monthly Notices of the Royal Astronomical Society",

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TY - JOUR

T1 - A spatially resolved 'inside-out' outburst of IP Pegasi

AU - Webb, N. A.

AU - Naylor, T.

AU - Ioannou, Z.

AU - Worraker, W. J.

AU - Stull, J.

AU - Allan, A.

AU - Fried, R.

AU - James, N. D.

AU - Strange, D.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - We present a comprehensive photometric data set taken over the entire outburst of the eclipsing dwarf nova IP Peg in 1997 September/October. Analysis of the light curves taken over the long rise to the peak-of-outburst shows conclusively that the outburst started near the centre of the disc and moved outwards. This is the first data set that spatially resolves such an outburst. The data set is consistent with the idea that long rise times are indicative of such 'inside-out' outbursts. We show how the thickness and the radius of the disc, along with the mass transfer rate, change over the whole outburst. In addition, we show evidence of the secondary and the irradiation thereof. We discuss the possibility of spiral shocks in the disc; however, we find no conclusive evidence of their existence in this data set.

AB - We present a comprehensive photometric data set taken over the entire outburst of the eclipsing dwarf nova IP Peg in 1997 September/October. Analysis of the light curves taken over the long rise to the peak-of-outburst shows conclusively that the outburst started near the centre of the disc and moved outwards. This is the first data set that spatially resolves such an outburst. The data set is consistent with the idea that long rise times are indicative of such 'inside-out' outbursts. We show how the thickness and the radius of the disc, along with the mass transfer rate, change over the whole outburst. In addition, we show evidence of the secondary and the irradiation thereof. We discuss the possibility of spiral shocks in the disc; however, we find no conclusive evidence of their existence in this data set.

KW - Accretion, accretion discs

KW - Binaries: eclipsing

KW - Infrared: stars

KW - Novae, cataclysmic variables

KW - Stars: individual: IP Peg

KW - White dwarfs

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U2 - 10.1046/j.1365-8711.1999.03002.x

DO - 10.1046/j.1365-8711.1999.03002.x

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SN - 0035-8711

VL - 310

SP - 407

EP - 413

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

A spatially resolved 'inside-out' outburst of IP Pegasi

Abstract

Keywords

ASJC Scopus subject areas

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