New observations of the only supernova remnant in the galaxy IC 1613

Lozinskaya, T. A.; Podorvanyuk, N. Yu.

doi:10.1134/s1063773709060024

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Earlier ( [4]) we found that diagnostic diagrams of the relative line intensities from our observations with Long-Slit spectrograph agree poorly with the photoionization models available for the gas metallicity Z = 0.2Z⊙ in IC10.…”

Section: Resultscontrasting

confidence: 57%

See 1 more Smart Citation

Ionized gas and sources of its ionization in the Irr galaxy IC 10

Egorov,

Arkhipova,

Lozinskaya

et al. 2010

Preprint

Self Cite

View full text Add to dashboard Cite

IC 10 is the nearest starburst irregular galaxy remarkable for its anomalously high number of WR stars. We report the results of an analysis of the emission spectra of HII-regions ionized by star clusters and WR stars based on observations made with the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences using MPFS field spectrograph and SCORPIO focal reducer operating in the slit spectrograph mode. We determine the masses and ages of ionizing star clusters in the violent star-forming region of the galaxy in terms of the new evolutionary models of emission-line spectra of HII-regions developed by [6]. We estimate the amount of stars needed to ionize the gas in the brightest HII-region HL 111 and report new determinations of oxygen abundance in HII regions.

show abstract

Section: Resultscontrasting

confidence: 57%

“…Figure 1 shows the locations of MPFS fields (named according to the corresponding central WR star) and those of long-slit spectrograms (named according to their position angle). Below we summarize the main results of these observations, which we reported in detail in our papers ( [1], [4]).…”

Section: Observationsmentioning

confidence: 77%

Ionized gas and sources of its ionization in the Irr galaxy IC 10

Egorov,

Arkhipova,

Lozinskaya

et al. 2010

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…W28 (G6.4−0.1) is an old‐age (>10 4 yr; Kaspi et al 1993), mixed morphology supernova remnant (SNR) spanning 50 × 45 arcmin with a distance estimated to be in the range of 1.8–3.3 kpc (e.g. Goudis 1976; Lozinskaya 1981). The SNR exhibits non‐thermal radio emission and thermal X‐rays (Dubner et al 2000; Rho & Borkowski 2002), and more recently, gamma‐ray sources at TeV (10 12 eV) (Aharonian et al 2008b) and GeV (10 9 eV) (Abdo et al 2010; Giuliani et al 2010) energies have been discovered by HESS, AGILE and Fermi ‐LAT telescopes, respectively, pointing to high‐energy particles in the region.…”

Section: Introductionmentioning

confidence: 99%

12 mm line survey of the dense molecular gas towards the W28 field TeV gamma-ray sources

Nicholas

Rowell

Burton

et al. 2010

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We present 12 mm Mopra observations of dense molecular gas towards the W28 supernova remnant (SNR) field. The focus is on the dense molecular gas towards the TeV gamma‐ray sources detected by the HESS telescopes, which likely trace the cosmic rays from W28 and possibly other sources in the region. Using the NH3 inversion transitions we reveal several dense cores inside the molecular clouds, the majority of which coincide with high‐mass star formation and H ii regions, including the energetic ultracompact H ii region G5.89−0.39. A key exception to this is the cloud north‐east of W28, which is well known to be disrupted as evidenced by clusters of 1720 MHz OH masers and broad CO line emission. Here we detect broad NH3, up to the (9,9) transition, with linewidths up to 16 km s−1. This broad NH3 emission spatially matches well with the TeV source HESS J1801−233 and CO emission, and its velocity dispersion distribution suggests external disruption from the W28 SNR direction. Other lines are detected, such as HC3N and HC5N, H2O masers, and many radio recombination lines, all of which are primarily found towards the southern high‐mass star formation regions. These observations provide a new view on to the internal structures and dynamics of the dense molecular gas towards the W28 SNR field and, in tandem with future higher‐resolution TeV gamma‐ray observations, will offer the chance to probe the transport of cosmic rays into molecular clouds.

show abstract

The X-Ray-resolved Supernova Remnant S8 in the Dwarf Irregular Galaxy IC 1613

Schlegel¹,

Pannuti²,

Lozinskaya³

et al. 2019

View full text Add to dashboard Cite

We conducted an observation of the nearby irregular galaxy IC 1613 with the Chandra X-ray Observatory using the S3 chip of the ACIS with an effective exposure time of 49.9 ksec. The observation primarily targeted the extensive bubble and star formation region in the northeast quadrant of the galaxy. The only known supernova remnant (SNR) in IC 1613, S8, is also the galaxy's most luminous X-ray source (L X (0.3-8 keV) ∼5 − 6×10 36 erg s −1 ). We resolve the SNR with Chandra and compare its nearly circular X-ray morphology with Hα and radio images. We assign an upper limit on the luminosity of any possible associated compact central object of ≈4×10 35 erg s −1 (0.3-8 keV band) and conclude that we would detect a Crab-like pulsar but not a Cas A-like object. We infer an age for S8 of ∼3400-5600 years and compare it to other SNRs in the Local Group. We suggest that S8 is a young composite SNR.

show abstract

New observations of the only supernova remnant in the galaxy IC 1613

Cited by 4 publications

References 9 publications

Ionized gas and sources of its ionization in the Irr galaxy IC 10

Ionized gas and sources of its ionization in the Irr galaxy IC 10

12 mm line survey of the dense molecular gas towards the W28 field TeV gamma-ray sources

The X-Ray-resolved Supernova Remnant S8 in the Dwarf Irregular Galaxy IC 1613

Contact Info

Product

Resources

About