2011ATel.3200....1R

Query : 2011ATel.3200....1R

2011ATel.3200....1R - The Astronomer's Telegram, 3200, 1 (2011/March-0)

New Swift observations of the SFXT IGR J11215-5952 in outburst.

ROMANO P., ESPOSITO P., VERCELLONE S., MANGANO V., BURROWS D.N., CUSUMANO G., FARINELLI R., KENNEA J.A., LA PAROLA V. and GEHRELS N.

Abstract (from CDS):

The supergiant fast X-ray transient (SFXT) IGR J11215-5952 (Lubinski et al. 2005, Atel #469) undergoes periodic outbursts separated by about 165 days (Sidoli et al. 2007, A&A 476, 1307), which most likely correspond to the orbital period of the binary system. Based on the ephemeris of Romano et al. (2009, ApJ, 696, 2068), that predicted the peak of the new outburst on 2011 March 1 at about 9.30 UT, we observed the source with Swift.

The Swift/XRT observations started on 2011 March 1 at 12:16:46 (effective exposure 2.4 ks). IGR J11215-5952 was detected with a mean count rate of (1.1±0.1)E-01 counts/s (1-10 keV). The average XRT/PC spectrum can be fit with an absorbed powerlaw model with a photon index of Gamma=1.0-0.5+0.6 and an absorbing column density of NH=(2.2-1.0+1.3)E+22 cm-2 (Cash statistics C-stat=542.6; 51% of 1E4 Monte Carlo realizations with statistic < C-stat). The mean observed (unabsorbed) 1-10 keV flux is 1.2E-11 erg/cm2/s (1.5E-11 erg/cm2/s), which translates into a luminosity of about 0.7E35 erg/s (assuming the optical counterpart HD 306414 at a distance of 6.2 kpc, Masetti et al. 2006 A&A, 449, 1139). These findings are consistent with those of previous outbursts (Romano et al. 2007, A&A, 469, L5; Sidoli et al 2007, A&A, 476, 1307; Romano et al. 2009, ApJ, 696, 2068; Atel #2257).

We thank the Swift Team for making these observations possible, in particular the duty scientists and the science planners.

SFXT Project web page: http://www.ifc.inaf.it/cgi-bin/pubIASF.cgi?href=activities/sfxt/index.html

Abstract Copyright: ∼

Journal keyword(s): Binary - Transient - Pulsar

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	HD 306414	HXB	11 21 46.8238550520	-59 51 47.970396396	10.12	10.69	10.23	10.00		B1Ia	162	0

Query : 2011ATel.3200....1R

Basic data :

HD 306414 -- High Mass X-ray Binary

* (1971PW&SO,HD,...), X (2022MNRAS,2SXPS,...), HXB (2023A&A), Psr (2012ApJ), s*b (1993ApJS), gam (IGR), NIR (2MASS)

11 21 46.8238550520 -59 51 47.970396396 (Optical) [ 0.0097 0.0107 90 ] A 2020yCat.1350....0G

11 19 32.6678838402 -59 35 20.324783702 [ 0.0097 0.0107 90 ]

291.8932286107707 +01.0729154939982 [ 0.0097 0.0107 90 ]

-5.147 2.727 [0.012 0.013 90] A 2020yCat.1350....0G

0.1233 [0.0123] A 2020yCat.1350....0G

B1Ia C 1993ApJS...89..293V

U 10.12 [~] D 2003AJ....125.2531R

B 10.69 [0.01] E 2012yCat.1322....0Z

V 10.23 [0.01] E 2012yCat.1322....0Z

R 10.00 [0.01] D 2012yCat.1322....0Z

G 9.770652 [0.002931] C 2020yCat.1350....0G

J 8.548 [0.030] C 2003yCat.2246....0C

H 8.340 [0.036] C 2003yCat.2246....0C

K 8.185 [0.023] C 2003yCat.2246....0C

g 10.77 [0.12] D 2012yCat.1322....0Z

r 10.12 [0.06] D 2012yCat.1322....0Z

i 9.47 [0.02] D 2012yCat.1322....0Z

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`HD 306414`	`IGR J11215-5952`	`TYC 8629-942-1`	`[KRL2007b] 96`
`ALS 2316`	`LLNS 4927`	`UCAC4 151-075107`	`Gaia DR2 5339047221168787712`
`CD-59 3698`	`LS 2316`	`USNO-B1.0 0301-00239906`	`Gaia DR3 5339047221168787712`
`CPD-59 3388`	`2MASS J11214682-5951479`	`uvby98 100306414`	`Gaia DR1 5339047216860375040`
`GEN# +1.00306414`	`2SXPS J112146.8-595148`	`4XMM J112146.8-595147`
`GSC 08629-00942`	`TIC 451004619`	`2XMMi J112146.7-595146`

References (162 between 1850 and 2026) (Total 162)
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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`HD 306414`	`ALS 2316`	`CD-59 3698`	`CPD-59 3388`	`GSC 08629-00942`
`LS 2316`	`2MASS J11214682-5951479`	`TYC 8629-942-1`	`UCAC4 151-075107`	`USNO-B1.0 0301-00239906`
`uvby98 100306414`	`Gaia DR2 5339047221168787712`	`Gaia DR3 5339047221168787712`	`Gaia DR1 5339047216860375040`

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