2021MNRAS.503.5534H

Query : 2021MNRAS.503.5534H

2021MNRAS.503.5534H - Mon. Not. R. Astron. Soc., 503, 5534-5544 (2021/June-1)

An improved model for the spectra of discs of nova-like variables.

HUBENY I. and LONG K.S.

Abstract (from CDS):

The spectra arising from the discs of nova-like variables show many of the features seen in stellar atmospheres. They are typically modelled either from an appropriated weighted set of stellar atmospheres or a disc atmosphere with energy is dissipated near the disc plane, with the effective temperature distribution expected from a steady-state accretion disc. However, these models generally overpredict the depth of the Balmer jump and the slope of the spectrum in the ultraviolet. The problem is likely due to energy dissipation in the disc atmosphere, which produces a flatter vertical temperature profile than is observed in stars. Here, we provide validation for this hypothesis in the form of spectra generated using the stellar atmosphere code TLUSTY using a parametric prescription for energy dissipation as a function of depth and closely match the spectrum of the nova-like IX Vel over the wavelength range 1150-6000 Å.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - methods: numerical - stars: novae, cataclysmic variables

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* IX Vel CV* 08 15 18.9688659456 -49 13 20.671780368 8.64 10.04 10.10 9.84 9.347 sdOBe 253 0

Query : 2021MNRAS.503.5534H

Basic data :
V* IX Vel -- Cataclysmic Binary
Other object types: otypes_help 		* (CD,ALS,...), UV (2012ApJS,2EUVE,...), X (1eRASS,RE,...), CV* (2012A&A), V* (ASAS,V*,...), PM* (2018yCat,PM), blu (2019A&A), HS* (1984AJ), SB* (SBC9), HS? (2019A&A), NIR (2MASS)
ICRS coord. (ep=J2000) : 		08 15 18.9688659456 -49 13 20.671780368 (Optical) [ 0.0155 0.0169 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		08 13 49.7061357865 -49 04 00.574128055 [ 0.0155 0.0169 90 ]
Gal coord. (ep=J2000) : 		264.9293326387179 -07.8900613138365 [ 0.0155 0.0169 90 ]
Proper motions mas/yr : 		-29.002 -95.261 [0.021 0.021 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -6.00 [7] / z(~) -0.000020 [0.000023] / cz -6.00 [7.00]
   D 2004A&A...424..727P
Parallaxes (mas): 		11.0674 [0.0182] A 2020yCat.1350....0G
Spectral type: 		sdOBe D 1984AJ.....89..389E
Fluxes (12) :
U 8.64 [~] D 2003AJ....125.2531R
B 10.04 [0.01] D 2012yCat.1322....0Z
V 10.10 [0.07] D 2012yCat.1322....0Z
R 9.84 [0.01] D 2012yCat.1322....0Z
G 9.304382 [0.004971] C 2020yCat.1350....0G
I 9.347 [0.143] D 2012AcA....62...67K
J 9.12 [~] D 2007NewA...12..446A
H 8.98 [~] D 2007NewA...12..446A
K 8.83 [~] D 2007NewA...12..446A
g 10.52 [0.06] D 2012yCat.1322....0Z
r 10.03 [0.11] D 2012yCat.1322....0Z
i 9.75 [0.02] D 2012yCat.1322....0Z
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Identifiers (37) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CD-48 3636 Hbg 155 RE J081515-491337 WEB 7878
ALS 1024 HIC 40430 1RXS J081519.0-491317 3XMM J081518.9-491320
ASAS J081519-4913.2 HIP 40430 SAO 219684 [SPB96] 1377
CPC 0 5645 LS 1024 SBC9 509 AAVSO 0812-48
CPD-48 1577 2MASS J08151897-4913206 TIC 286156790 Gaia DR3 5515820034889610112
1eRASS J081518.7-491324 PM J08153-4913 TYC 8157-627-1 Gaia DR1 5515820030594942336
2EUVE J0815-49.2 PPM 312830 UBV M 6374 Gaia DR2 5515820034889610112
EUVE J0815-49.2 2RE J081518-491354 UCAC4 204-019470
GEN# -0.04803636 2RE J0815-491 uvby98 -004803636
GSC 08157-00627 RE J0815-491 V* IX Vel

References (253 between 1850 and 2026) (Total 253)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 2    Distance : 3    Var : 2    Plx : 5    PM : 4    SpT : 2   

   

Observing logs
IUE : 59    XMM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Link by name to the catalogue in VizieR :

CD-48 3636 ALS 1024 CPD-48 1577 EUVE J0815-49.2 GSC 08157-00627
HIC 40430 HIP 40430 LS 1024 2MASS J08151897-4913206 PPM 312830
2RE J081518-491354 2RE J0815-491 1RXS J081519.0-491317 SAO 219684 TYC 8157-627-1
UCAC4 204-019470 uvby98 -004803636 V* IX Vel Gaia DR3 5515820034889610112 Gaia DR1 5515820030594942336
Gaia DR2 5515820034889610112

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