adsabs/AstroCLIMB huggingface dataset:
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20180924B.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190102C.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20180916B.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20181112A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20200906A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190608B.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190714A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20191001A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190711A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190520B.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20190611B.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20200430A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20201124A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20220105A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20211203C.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20211212A.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20210320C.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20210410D.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20210807D.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20211127I.
Paper: The Demographics, Stellar Populations, and Star Formation Histories of Fast Radio Burst Host Galaxies: Implications for the Progenitors
Authors: Alexa C. Gordon, Wen-fai Fong, Charles D. Kilpatrick, Tarraneh Eftekhari, Joel Leja, J. Xavier Prochaska, Anya E. Nugent, Shivani Bhandari, Peter K. Blanchard, Manisha Caleb, Cherie K. Day, Adam T. Deller, Yuxin Dong, 雨欣 董, Marcin Glowacki, Kelly Gourdji, Alexandra G. Mannings, Elizabeth K. Mahoney, Lachlan Marnoch, Adam A. Miller, Kerry Paterson, Jillian C. Rastinejad, Stuart D. Ryder, Elaine M. Sadler, Danica R. Scott, Huei Sears, Ryan M. Shannon, Sunil Simha, Benjamin W. Stappers, Nicolas Tejos
Figure caption: SED of FRB 20210117A.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: Median and quartile S/N curves for known pulsars with X-ray and V-band fluxes (blue) and a subsample of known redback/black widow millisecond pulsars (green). With a 10 ks exposure with Swift-XRT, half of pulsars and a quarter of redback/black widows exceed an S/N = 4 detection threshold.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: Swift-XRT fields the six 4FGL targets (95% uncertainty ellipses in blue) with TRPAUM source position (red) and XRT source regions (green, r = 20″). For J1803.1−6708, we also include in magenta the secondary X-ray source outside the 4FGL ellipse.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: The gamma-ray fluxes of 4FGL J1823.8−3544 from the 4FGL catalog and the binned X-ray spectrum and UVOT V-band magnitude for the possible X-ray counterpart in the southern region of the uncertainty ellipse.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: By comparing the Swift-XRT spectra for the two X-ray sources in the error ellipse of 4FGL J1858.4−5242 with the Fermi-LAT emission (red dots), we find that the TRAPUM detection (green/cyan points) and the Swift alternative (yellow/purple points) are two possible counterparts.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: The gamma-ray fluxes of 4FGL J1906.4−1757 from the 4FGL catalogs and the binned X-ray spectrum for the detected X-ray source in the uncertainty ellipse.
Paper: Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
Authors: Stephen Kerby, Abraham D. Falcone, Paul S. Ray
Figure caption: Comparing F  X /F  γ  and F Γ for the 4FGL training pulsars (black crosses), the detected Swift-XRT counterparts (blue dots), and the TRAPUM nondetections (red triangles). Diagonal hashes show lines of constant F  X  in erg s−1 cm−2.
Paper: Eta Carinae: The Dissipating Occulter Is an Extended Structure
Authors: Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Figure caption: HST image of the Homunculus and the central source recorded with the WFC3/UVIS instrument and the F280N filter on 2020 February 12 (Φ = 13.997). The 3.″2 long portion of the 52″ × 0.″1 aperture is indicated by the long, black rectangle (used for the spectro-images displayed in Figures 3, 4, 5, A.1, and A.2). The shorter white and cyan rectangles (see enlargement) indicate the positions of the 0.″3 × 0.″2 aperture used with the HST/STIS echelle spectrograph for the spectro-images displayed in Figure 5, top and bottom. The positions of Weigelt C and D are indicated in the 1.″6 × 1.″6 inset image. The projected edge of the foreground lobe is located ≈1.″3 NNW of η Car. (Image is from the HST archive.)
Paper: Eta Carinae: The Dissipating Occulter Is an Extended Structure
Authors: Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Figure caption: Long-term, ∼18 yr interval, changes of spatially varying absorption by foreground ejecta between the high-ionization states of cycles 10 and 13. Left: sketch of the absorption structures and how they change over the long term. Middle: strong changes occur in the resonant Mn II λ2577 line between (a) the high-ionization state at ϕ = 10.404 and (b) the high-ionization state at ϕ = 13.641. Right: similar changes occur in the Fe II λ2757 line, which originates above the ground state (1 eV) for (c) ϕ = 10.404 and (d) ϕ = 13.641. The dashed line represents 0 km s−1, which is present from an interstellar cloud in Mn II but not in Fe II. The sketch includes labeling of the projected Homunculus edge, located ≈1.″3 NNW of η Car and the ridge of backscattered starlight, which is discussed in Section 5.2. Broad absorptions from multiple shells in the Homunculus, centered on −500 km s−1, and the Little Homunculus, centered on −150 km s−1, are readily apparent in the high-ionization state (ϕ = 10.404) but weaken and narrow by three cycles later (ϕ = 13.641). Multiple spectro-images recorded across cycle 10 at these same PAs showed few changes in structure across the long high-ionization state. While both observations were accomplished at the same PA of 332°, the ensuing 18 years between exposures led to a sixfold increase in stellar flux that further contributed an artificial flux from charge transfer effects in the extended region below −0.″7 at ϕ = 13.641 for (b) and (d).
Paper: Eta Carinae: The Dissipating Occulter Is an Extended Structure
Authors: Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Figure caption: Phase-dependent changes from the high- to low-ionization states of spatially varying absorption by foreground ejecta. Left: sketch of the absorption structures between the two states. Velocities are referenced to the ISM (≈0 km s−1). Middle: changes occurring in the Mn II λ2577 line, which originates from the ground state, 0.0 eV, in the short term between (a) the high-ionization state at ϕ = 10.404 and (b) the low-ionization state at ϕ = 11.037. Right: changes occurring in the Fe II λ2757 line, which originates from a level 1.0 eV above the ground state for (c) ϕ = 10.404 and (d) ϕ = 11.037. The dashed line in each spectro-image represents 0 km s−1. The sketch includes labeling of the projected Homunculus edge, located ≈1.″3 NNW of η Car and the ridge of backscattered starlight which is discussed in Section 5.2. The spectro-images at ϕ = 11.037, recorded at PA = 152°, are mirror-imaged in this figure for comparison with the spectro-images at ϕ = 10.404, recorded at PA = 332°.
Paper: Eta Carinae: The Dissipating Occulter Is an Extended Structure
Authors: Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Figure caption: Phase-dependent changes from the low- to high-ionization states recorded in echelle spectro-images of Fe II λ2728 absorption structures. Top: η Car was centered in the 0.″3 × 0.″2 aperture deep in the low-ionization state (ϕ = 11.037). Broad, high-velocity absorption from the interacting winds shifts from ≈−450 km s−1 SSE (−0.″15) to −550 km s−1 centered upon η Car and back to −450 km s−1 NNW (+0.″15), indicating that the Fe+ wind structure is resolved and extends at least a few hundred astronomical units beyond the continuum core. A narrow absorption, centered at −146 km s−1 on the star broadens in the NNW as a continuous, shallow absorption extending to −35 km s−1 terminated by an emission feature originating from Weigelt B. Bottom: a spectro-image recorded at ϕ = 11.119, when η Car had returned to the high-ionization state. η Car was positioned at the edge of the aperture in an effort to map structures of Weigelt B and D and the intervening winds. The broad, shallow absorption extends NNW in front of Weigelt D.
Paper: Eta Carinae: The Dissipating Occulter Is an Extended Structure
Authors: Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Figure caption: Velocity profiles of three absorption lines that originate from significantly different energy levels during the low-ionization state, ϕ = 11.037 (left column) and the early high-ionization state, ϕ = 11.119 (right column). The Mg I λ2853 line (0.0 eV; top row) traces changes in multiple shells where neutral gas existed. The Fe II λ2757 line (1.0 eV; middle row) is saturated at most shell velocities as singly ionized metals dominate across the multiple shells. The Cr II λ2844 line (1.5 eV; bottom row) is dominated by a P Cygni wind profile with strong absorption by shells with velocities between −120 and −190 km s−1, but with only a few high-velocity shells absorbing in the high-ionization state. The velocity profiles are (1) η Car, on the star, (2) NNW, which includes portions of the emission structure, Weigelt D, plus modified scattered starlight to the NNW, and (3) SSE, which is modified scattered starlight. No nebular spectrum SSE of η Car was recorded in the echelle spectro-image recorded at ϕ = 11.119. Note: the vertical scales on the left and right plots are different—during periastron passage the NUV flux decreases, most likely a consequence of increased line blanketing by the primary wind.