2008CBET.1354....1A

Query : 2008CBET.1354....1A

2008CBET.1354....1A - Central Bureau Electronic Telegrams, 1354, 1 (2008/April-0)

V2491 Cygni.

ASHOK N.M., BANERJEE D.P.K., JOSHI V., NAIK S., FORNE E. and SANTANGELO M.M.M.

Abstract (from CDS):

N. M. Ashok, D. P. K. Banerjee, V. Joshi, and S. Naik, Physical Research Laboratory, Ahmedabad, report near-infrared JHK spectroscopy with the Mt. Abu 1.2-m telescope (+ PRL Near-Infrared NICMOS3 Imaging Spectrometer) of the nova V2491 Cyg (cf. IAUC 8934, 8935, 8938; CBET 1334) that has been reported to be a pre-nova x-ray source (http://www.astronomerstelegram.org/?read=1473, and/?read=1478). Spectra taken on Apr. 18 and 20 are rather similar and show broad H I emission lines of Paschen_beta and Paschen_gamma (blended with He I 1.0830-microns) in the J band, Brackett_gamma in the K band, and other Brackett series lines in the H band. The O I lines at 1.1288 and 1.3166 microns and He I at 2.0585 microns are prominent; weak emission in the N I lines at 1.1762 and 1.2462 microns is also possibly seen. The FWHM of the strongest H I lines seen (Paschen_beta and Brackett_gamma) are in the range 3900-4300 km/s, and the profiles of the emission lines show a complex structure. CCD magnitudes for V2491 Cyg: Apr. 19.113 UT, B = 9.97 ± 0.06 (E. Forne, L'Ampolla de Mar, Tarragona, Spain); 19.099, V = 9.79 ± 0.09 (Forne); 19.090, R = 8.96 ± 0.08 (Forne); 19.130, I = 9.00 ± 0.16 (Forne); 20.014, V = 9.87 ± 0.02, B-V = +0.09 ± 0.03 (M. M. M. Santangelo, Capannori, Italy, 0.30-m telescope + SSP-5A photometer; comparison star HDE 331152).

Abstract Copyright: ∼

Journal keyword(s):

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* V2491 Cyg	CV*	19 43 01.9771342416	+32 19 13.549047276	18.27	18.72	18.03	17.72	17.41	~	174	0

Query : 2008CBET.1354....1A

Basic data :

V* V2491 Cyg -- Cataclysmic Binary

X (2RXP,1RXS,...), CV* (2012ApJ), * (GSC2,USNO,...), No* (2008IAUC,NOVA), V* (V*)

19 43 01.9771342416 +32 19 13.549047276 (Optical) [ 0.0624 0.0709 90 ] A 2020yCat.1350....0G

19 41 06.2664355252 +32 12 02.113782770 [ 0.0624 0.0709 90 ]

067.2287120218660 +04.3530594746874 [ 0.0624 0.0709 90 ]

-3.170 -5.625 [0.086 0.092 90] A 2020yCat.1350....0G

0.0643 [0.0837] A 2020yCat.1350....0G

U 18.27 [0.07] C 2018MNRAS.480.4489Z

B 18.72 [0.08] C 2018MNRAS.480.4489Z

V 18.03 [0.03] C 2018MNRAS.480.4489Z

R 17.72 [0.03] C 2018MNRAS.480.4489Z

G 17.959959 [0.006874] C 2020yCat.1350....0G

I 17.41 [0.02] C 2018MNRAS.480.4489Z

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`GSC2 N030133067091`	`SWIFT J1943.0+3219`	*`V V2491 Cyg`**	`Gaia DR2 2033300327537067264`
`NOVA Cyg 2008 b`	`SWIFT J1942.8+3220`	`2XMM J194301.7+321912`	`Gaia DR3 2033300327537067264`
`2RXP J194302.0+321912`	`SWIFT J194302.1+321913`	`2XMMi J194301.7+321912`
`1RXS J194259.9+321940`	`USNO-B1.0 1223-00482965`	`XMMSL1 J194301.9+321911`

References (174 between 1850 and 2026) (Total 174)
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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* V2491 Cyg

Link by name to the catalogue in VizieR :

1RXS J194259.9+321940 USNO-B1.0 1223-00482965 V* V2491 Cyg Gaia DR2 2033300327537067264 Gaia DR3 2033300327537067264

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