Eric E. Mamajek

HPIC catalog and potential contaminants from Gaia

Noah W. Tuchow, Stark C.C, Eric E. Mamajek

us (code pays fourni par la source)

HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars for the Habitable Worlds Observatory

Tara Fetherolf, Arvind F. Gupta, Elisabeth Newton, A. P. Buccino et autres

Abstract A major goal of the Habitable Worlds Observatory (HWO) is to precisely characterize exoplanets and their atmospheres. However, magnetic activity from an exoplanet’s host star can complicate measurements of both the stellar and planetary properties, and stellar activity can be an …

us, gb, ar, es (code pays fourni par la source)

Direct Spectroscopic Confirmation of the Young Embedded Protoplanet WISPIT 2c

C. Lawlor, Richelle van Capelleveen, Guillaume Bourdarot, C. Ginski et autres

Abstract WISPIT 2 is a nearby young star with a multiringed disk that was recently confirmed to host a ∼4.9 M Jup gas giant planet embedded in a large (60 au) gap at a radial separation of 57 au from the host …

ie, nl, de, us, pt, gb, fr (code pays fourni par la source)

Toward a near-ultraviolet coronagraph instrument for the Habitable Worlds Observatory

Roser Juanola-Parramon, P Chen, Mario Damiano, Jessica Gersh-Range et autres

The near-ultraviolet (NUV) wavelength range contains a valuable ozone absorption feature for characterizing the atmospheric composition of Earth-like exoplanets. Both the LUVOIR and HabEx decadal mission concept studies baseline instrumentation for obtaining photometry of directly imaged exoplanets down to wavelengths of 200 …

us (code pays fourni par la source)

CoronaGraph Instrument Reference Stars for Exoplanets (CorGI-REx). I. Preliminary Vetting and Implications for the Roman Coronagraph and Habitable Worlds Observatory

Justin Hom, Schuyler Wolff, Catherine A. Clark, David R. Ciardi et autres

Abstract The upcoming Roman Coronagraph will be the first high-contrast instrument in space capable of high-order wave front sensing and control technologies, a critical technology demonstration for the proposed Habitable Worlds Observatory (HWO) that aims to directly image and characterize habitable exoEarths. …

Non-detection of J1407 b in ALMA Band 7 Observations

Pamela Klaassen, Matthew A. Kenworthy, Eric E. Mamajek, Nienke van der Marel et autres

Abstract We report on Atacama Large Millimeter/submillimeter Array (ALMA) Band 7 continuum observations toward the star 1SWASP J140747.93-394542.6 taken in mid 2024. These observations were a follow-up of a previous detection of an emission source in the J1407 field of view at …

gb, nl, us, cl (code pays fourni par la source)

Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone

Rachel B. Fernandes, Samson A. Johnson, Galen J. Bergsten, Sakhee Bhure et autres

Abstract Searching for life elsewhere in the universe is one of the most highly prioritized pursuits in astronomy today. However, the ability to observe evidence of Earth-like life through biosignatures is limited by the number of planets in the solar neighborhood with …

us, au, fr, ca, cl (code pays fourni par la source)

SPORES-HWO. II. Companion Mass Limits and Updated Planet Properties for 120 Future Exoplanet Imaging Targets from 35 yr of Precise Doppler Monitoring ∗

Caleb K. Harada, Courtney D. Dressing, Emma V. Turtelboom, Stephen R. Kane et autres

Abstract A goal of the future Habitable Worlds Observatory (HWO) is to directly image and spectroscopically characterize true Earth-analogs. However, if a large fraction of HWO target stars host unknown dynamically disruptive giant planets in their habitable zones (HZs), then additional targets …

CoronaGraph Instrument Reference stars for Exoplanets (CorGI-REx) I. Preliminary Vetting and Implications for the Roman Coronagraph and Habitable Worlds Observatory

Justin Hom, Schuyler Wolff, Catherine A. Clark, David R. Ciardi et autres

The upcoming Roman Coronagraph will be the first high-contrast instrument in space capable of high-order wavefront sensing and control technologies, a critical technology demonstration for the proposed Habitable Worlds Observatory (HWO) that aims to directly image and characterize habitable exoEarths. The nominal …

WIde Separation Planets In Time (WISPIT)

Richelle van Capelleveen, Matthew A. Kenworthy, C. Ginski, Eric E. Mamajek et autres

Context. Wide separation gas giant planets present a challenge to current planet formation theories, and the detection and characterisation of these systems enables us to constrain their formation pathways. Aims. The WIde Separation Planets In Time (WISPIT) survey aims to detect and …

nl, ie, us (code pays fourni par la source)

Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone

Rachel B. Fernandes, Samson A. Johnson, Galen J. Bergsten, Sakhee Bhure et autres

Searching for life elsewhere in the universe is one of the most highly prioritized pursuits in astronomy today. However, the ability to observe evidence of Earth-like life through biosignatures is limited by the number of planets in the solar neighborhood with conditions …

HWO Target Stars and Systems: A Survey of Archival UV and X-Ray Data

Sarah Peacock, David J. Wilson, Tyler Richey-Yowell, Noah W. Tuchow et autres

Abstract We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and interpreting planetary atmospheres. Using a sample of 98 nearby stars (HWO Tier 1 …