HEAO A-2 soft X-ray source catalog

Nugent, J. J.; Jensen, K. A.; Nousek, J. A.; Garmire, G. P.; Mason, K. O.; Walter, F. M.; Bowyer, C. Stuart; Stern, Robert; Riegler, G. R.

doi:10.1086/190838

Cited by 38 publications

(19 citation statements)

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“…The next comprehensive ones were published based on the HEAO1 data between 1977 and 1979: A1 catalog in 1-20 keV (842 sources, Wood et al 1984), A2 catalog in 0.2-2.8 keV (114 sources, Nugent et al 1983), and A3 catalog in 13-180 keV (40 sources, Levine et al 1984). All of these catalogs were based on the data taken with non-focusing optics.…”

Section: Introductionmentioning

confidence: 99%

The first MAXI/SSC catalog of X-ray sources in 0.7–7.0 keV

Tomida¹,

Uchida²,

Tsunemi³

et al. 2016

Publications of the Astronomical Society of Japan

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We present the first source catalog of the Solid-state Slit Camera (SSC) of the Monitor of All-sky X-ray Image (MAXI) mission on the International Space Station, using the 45-month data from 2010 August to 2014 April in 0.7-7.0 keV bands. Sources are searched for in two energy bands, 0.7-1.85 keV (soft) and 1.85-7.0 keV (hard), the limiting sensitivity of 3 and 4 mCrab are achieved and 140 and 138 sources are detected in the soft and hard energy bands, respectively. Combining the two energy bands, 170 sources are listed in the MAXI/SSC catalog. All but 2 sources are identified with 22 galaxies including AGNs, 29 cluster of galaxies, 21 supernova remnants, 75 X-ray binaries, 8 stars, 5 isolated pulsars, and 9 non-categorized objects. Comparing the soft-band fluxes at the brightest end in our catalog with the ROSAT survey, which was performed about 20 years ago, 10% of the cataloged sources are found to have changed the flux since the ROSAT era.

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Section: Introductionmentioning

confidence: 99%

The first MAXI/SSC catalog of X-ray sources in 0.7–7.0 keV

Tomida¹,

Uchida²,

Tsunemi³

et al. 2016

Publications of the Astronomical Society of Japan

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“…H 1504+65 is a faint blue star that has been identified as the counterpart of a bright soft X-ray source (Nousek et al 1986) discovered by an early X-ray survey (Nugent et al 1983). Spectroscopically, the star is a member of the PG1159 class which comprises hot hydrogen-deficient (pre-) white dwarf stars (T eff = 75 000 K-180 000 K, log g = 5.5−8 [cgs]; Werner 2001).…”

Section: Introductionmentioning

confidence: 99%

Chandra and FUSE spectroscopy of the hot bare stellar core H 1504+65

Werner

Rauch

Barstow

et al. 2004

A&A

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Abstract. H 1504+65 is an extremely hot hydrogen-deficient white dwarf with an effective temperature close to 200 000 K. We present new FUV and soft X-ray spectra obtained with FUSE and Chandra, which confirm that H 1504+65 has an atmosphere primarily composed of carbon and oxygen. The Chandra LETG spectrum (60-160 Å) shows a wealth of photospheric absorption lines from highly ionized oxygen, neon, and -for the first time identified in this star -magnesium and suggests relatively high Ne and Mg abundances. This corroborates an earlier suggestion that H 1504+65 represents a naked C/O stellar core or even the C/O envelope of an O-Ne-Mg white dwarf.

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“…QQ Vul was discovered with the HEAO-1 low energy detectors in the 0.15 − 0.5 keV band and catalogued by Nugent (1983). Spectroscopic, photometric, and polarimetric observations by Nousek et al (1984) immediately following its detection led to the classification of this object as an AM Her type cataclysmic variable (or 'polar') with an orbital period of 222.5 min.…”

Section: Introductionmentioning

confidence: 99%

Multi-epoch Doppler tomography and polarimetry of QQ Vul

Schwope

Catalán

Beuermann

et al. 2000

Monthly Notices of the Royal Astronomical Society

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(abridged abstract) We present multi-epoch high-resolution spectroscopy and photoelectric polarimetry of the long-period polar (AM Herculis star) QQ Vul. The blue emission lines show several distinct components, the sharpest of which can unequivocally be assigned to the illuminated hemisphere of the secondary star and used to trace its orbital motion. This narrow emission line can be used in combination with NaI-absorption lines from the photosphere of the companion to build a stable long-term ephemeris for the star: inferior conjunction of the companion occurs at HJD = 2448446.4710(5) + E 0.15452011(11).Comment: MNRAS, in press (15 pages), see also http://www.aip.de/~preprint/preprints/1999/1999_049.html and http://www.aip.de/~preprint/preprints/1999/1999_048.htm

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HEAO A-2 soft X-ray source catalog

Cited by 38 publications

References 0 publications

The first MAXI/SSC catalog of X-ray sources in 0.7–7.0 keV

The first MAXI/SSC catalog of X-ray sources in 0.7–7.0 keV

Chandra and FUSE spectroscopy of the hot bare stellar core H 1504+65

Multi-epoch Doppler tomography and polarimetry of QQ Vul

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