2012MNRAS.419.1465M

Query : 2012MNRAS.419.1465M

2012MNRAS.419.1465M - Mon. Not. R. Astron. Soc., 419, 1465-1471 (2012/January-2)

The helium abundance in the ejecta of U Scorpii.

MAXWELL M.P., RUSHTON M.T., DARNLEY M.J., WORTERS H.L., BODE M.F., EVANS A., EYRES S.P.S., KOUWENHOVEN M.B.N., WALTER F.M. and HASSALL B.J.M.

Abstract (from CDS):

U Scorpii (U Sco) is a recurrent nova which has been observed in outburst on 10 occasions, most recently in 2010. We present near-infrared (near-IR) and optical spectroscopy of the 2010 outburst of U Sco. The reddening of U Sco is found to be E(B - V) = 0.14±0.12, consistent with previous determinations, from simultaneous optical and near-IR observations. The spectra show the evolution of the linewidths and profiles to be consistent with previous outbursts. Velocities are found to be up to 14 000 km/s in broad components and up to 1800 km/s in narrow-line components, which become visible around day 8 due to changes in the optical depth. From the spectra we derive a helium abundance of N(He)/N(H) = 0.073 ± 0.031 from the most reliable lines available; this is lower than most other estimates and indicates that the secondary is not helium-rich, as previous studies have suggested. Carbon deficiencies in the primaries of some classical Algols

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): stars: individual: U Sco - novae, cataclysmic variables - infrared: stars

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* U Sco	CV*	16 22 30.7791646104	-17 52 43.166822628						F8+K2	592	0

Query : 2012MNRAS.419.1465M

Basic data :

V* U Sco -- Cataclysmic Binary

CV* (2012A&A), V* (V*,AAVSO), * (BD,Gaia), MIR (WISEA,WISE), EB* (2012MNRAS), NIR (2MASS)

16 22 30.7791646104 -17 52 43.166822628 (Optical) [ 0.1317 0.0647 90 ] A 2020yCat.1350....0G

16 19 37.4939031699 -17 45 43.406660709 [ 0.1317 0.0647 90 ]

357.6685423446552 +21.8687006597922 [ 0.1317 0.0647 90 ]

-0.380 -7.591 [0.202 0.144 90] A 2020yCat.1350....0G

F8+K2 D 2011A&A...526A..83K

G 18.1704 [0.0156] C 2018yCat.1345....0G

J 16.792 [0.134] D 2003yCat.2246....0C

H 16.387 [0.189] D 2003yCat.2246....0C

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`BD-17 4554`	`NOVA Sco 1987`	`NOVA Sco 1999`	`WISE J162230.78-175243.0`
`2MASS J16223079-1752431`	`NOVA Sco 1969`	`TIC 413482626`	`AAVSO 1616-17`
`NOVA Sco 1863`	`NOVA Sco 1936`	*`V U Sco`**	`Gaia DR3 6246188565119443072`
`NOVA Sco 1979`	`NOVA Sco 1945`	`WISEA J162230.80-175243.2`	`Gaia DR2 6246188565119443072`

References (592 between 1850 and 2026) (Total 592)
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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`BD-17 4554`	`2MASS J16223079-1752431`	*`V U Sco`**	`WISEA J162230.80-175243.2`	`WISE J162230.78-175243.0`
`Gaia DR3 6246188565119443072`	`Gaia DR2 6246188565119443072`

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