1994A&A...285..209M

Query : 1994A&A...285..209M

1994A&A...285..209M - Astronomy and Astrophysics, volume 285209-212 (1994/5-1)

Soft X-ray observations of EXO 2030+375.

MAVROMATAKIS F.

Abstract (from CDS):

The X-ray transient pulsar EXO 2030+375 was observed by ROSAT in November 1990 during the All-Sky survey. The observation took place very close to periastron passage and the source was clearly visible over an interval of two days. The average flux level suggests an active companion star although the ROSAT flux is lower than the observed flux in most of the EXOSAT observations. The spectrum is heavily absorbed below 1 keV and the hardness ratio indicates a column density of 2-3 x 10²² cm^–2, consistent with previous measurements. The amount of pulsed flux in the soft X-ray band and the absence of a soft excess in EXOSAT archival data suggest that the soft X-rays originate from the immediate vicinity of the neutron star. Joint spectral fits of soft and hard X-ray EXOSAT data further show that the neutral column density, intrinsic to the source, is of the order of 10²² cm^–2.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: EXO 2030+375 - stars: neutron - X-rays: 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* V2246 Cyg	HXB	20 32 15.2749858128	+37 38 14.843024844		22.16	19.41	17.32	15.18	B0Ve	480	0

Query : 1994A&A...285..209M

Basic data :

V* V2246 Cyg -- High Mass X-ray Binary

X (2022MNRAS,EXO,...), HXB (2013ApJS), gam (INTEGRAL1,INTREF), Psr (2007ApJS), Be* (2007ApJS), C*? (2022yCat), LP? (2022yCat), V* (V*), * (Gaia), NIR (2MASS)

20 32 15.2749858128 +37 38 14.843024844 (Optical) [ 0.0614 0.0760 90 ] A 2020yCat.1350....0G

20 30 22.0777653201 +37 28 00.523764436 [ 0.0614 0.0760 90 ]

077.1518745097928 -01.2417986845839 [ 0.0614 0.0760 90 ]

-3.371 -5.400 [0.083 0.091 90] A 2020yCat.1350....0G

0.3418 [0.0846] A 2020yCat.1350....0G

B0Ve C 1987A&A...182L..55M

B 22.16 [~] D 2015A&A...574A..33R

V 19.41 [~] D 2015A&A...574A..33R

R 17.32 [~] D 2015A&A...574A..33R

G 16.916855 [0.003425] C 2020yCat.1350....0G

I 15.18 [~] D 2015A&A...574A..33R

J 12.050 [0.020] C 2003yCat.2246....0C

H 10.835 [0.018] C 2003yCat.2246....0C

K 10.074 [0.016] C 2003yCat.2246....0C

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`2MASS J20321527+3738148`	`INTREF 1029`	`SWIFT J2032.2+3738`	`4XMM J203215.2+373815`
`EXO 2030+375`	`PBC J2032.2+3738`	`2SXPS J203215.3+373814`	`[KRL2007b] 375`
`INTEGRAL1 117`	`1RXS J203215.8+373817`	`TIC 16948107`	`Gaia DR2 2063791369815322752`
`INTREF 1028`	`SRGA J203215.7+373813`	*`V V2246 Cyg`**	`Gaia DR3 2063791369815322752`

References (480 between 1850 and 2026) (Total 480)
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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External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* V2246 Cyg

Link by name to the catalogue in VizieR :

2MASS J20321527+3738148 1RXS J203215.8+373817 V* V2246 Cyg Gaia DR2 2063791369815322752 Gaia DR3 2063791369815322752

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